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Refrigerators, Refrigerator-Freezers and Freezers

Explosion-Proof Flammable Material Storage Cool-Lab, General Purpose3551 3551-10 3750 3761-1

3551-1 3551-11 3750KP 37623552 3552-10 3750KGP 3762-1

3552-1 3552-11 3750-1 37633555 3556 3750-2 3763-1

3555-1 3556KG 3751 3763-1K3557 3556-4 3751-1 3764

3557-2 3556-4KG 3752 3764-13557-4 3556-6 3752KP 37663559 3559-10 3752-1 3766-1

3559-1 3559-11 3753 37673560 3560-10 3754 3767BR27

3560-1 3560-11 3755 3767-13566 3566-10 3756 3770

3566-1 3566-11 3756P 37713757 37723761 3772P

057-196-00 • 9/23/05

Safety Information ........................................................................................................................................................................................................3Alert Signals..........................................................................................................................................................................................................3

Explosion-Proof Refrigerators and Freezers ................................................................................................................................................................4Overview ..............................................................................................................................................................................................................4Model 3551, 3551-1..............................................................................................................................................................................................5Model 3552, 3552-1..............................................................................................................................................................................................6Model 3555, 3555-1..............................................................................................................................................................................................7Model 3557, 3557-2, 3557-4 ................................................................................................................................................................................8Model 3559, 3559-1..............................................................................................................................................................................................9Model 3560, 3560-1............................................................................................................................................................................................10Model 3566, 3566-1 ............................................................................................................................................................................................11

Flammable Materials Storage Refrigerators and Freezers ........................................................................................................................................12Overview ............................................................................................................................................................................................................12Model 3551-10, 3551-11 ....................................................................................................................................................................................13Model 3552-10, 3552-11 ....................................................................................................................................................................................14Model 3556 ........................................................................................................................................................................................................15Model 3556-4 ......................................................................................................................................................................................................15Model 3556-6 ......................................................................................................................................................................................................15Model 3559-10, 3559-11 ....................................................................................................................................................................................16Model 3560-10, 3560-11 ....................................................................................................................................................................................17Model 3566-10, 3566-11 ....................................................................................................................................................................................18

Cool Lab, General Purpose Laboratory Refrigerators and Freezers ..........................................................................................................................19Overview ............................................................................................................................................................................................................19Model 3570, 3570-1, 3570-2, 3750KP................................................................................................................................................................19Model 3751, 3751-1............................................................................................................................................................................................19Model 3752, 3752-1, 3752KP ............................................................................................................................................................................21Model 3753 ........................................................................................................................................................................................................21Model 3754 ........................................................................................................................................................................................................22Model 3755 ........................................................................................................................................................................................................22Model 3756, 3756P ............................................................................................................................................................................................23Model 3757 ........................................................................................................................................................................................................23Model 3761, 3761-1............................................................................................................................................................................................24Model 3762, 3762-1............................................................................................................................................................................................24Model 3755 ........................................................................................................................................................................................................22Model 3763, 3763-1, 3763-1K ............................................................................................................................................................................25Model 3764, 3764-1............................................................................................................................................................................................25Model 3766, 3766-1............................................................................................................................................................................................26Model 3767, 3767-1............................................................................................................................................................................................26Model 3767BR27 ................................................................................................................................................................................................26Model 3767, 3767-1............................................................................................................................................................................................26Model 3770 ........................................................................................................................................................................................................26Model 3771 ........................................................................................................................................................................................................27Model 3772, 3772P ............................................................................................................................................................................................27

Unpacking and Installation ..........................................................................................................................................................................................28Shipping Carton ..................................................................................................................................................................................................28Unpacking ..........................................................................................................................................................................................................28Location ..............................................................................................................................................................................................................28Clearance............................................................................................................................................................................................................28Electrical ............................................................................................................................................................................................................29Be Advised..........................................................................................................................................................................................................29Sealing Killark Box Conduit to Help Protect Against Explosions ........................................................................................................................30

Operation ....................................................................................................................................................................................................................33Environmental Operating Conditions ..................................................................................................................................................................33Start-Up Procedure ............................................................................................................................................................................................33Restart Procedure ..............................................................................................................................................................................................33Control Panel Lights (Model 3753) ....................................................................................................................................................................34How to Save Energy ..........................................................................................................................................................................................35Safety Tips ..........................................................................................................................................................................................................35

Optional Equipment ....................................................................................................................................................................................................36Optional Buzzer Alarm ........................................................................................................................................................................................36Optional Recorder ..............................................................................................................................................................................................37

Troubleshooting ..........................................................................................................................................................................................................39Maintenance ................................................................................................................................................................................................................40

Cleaning of Units ................................................................................................................................................................................................40Interior/Exterior and Door Gaskets ............................................................................................................................................................40Condenser..................................................................................................................................................................................................40

Manual Defrost Procedure (Models 3556-4, 3556-6, 3557-2, 3557-4, 3750, 3750-1, 3752 and 3752-1)..........................................................41Manual Defrost Procedure (Model 3772 only)....................................................................................................................................................42Reversing the Front Door (Model 3551) ............................................................................................................................................................43Reversing the Front Door (Models 3556, 3557 and 3751) ................................................................................................................................44Reversing the Front Door (Models 3772) ..........................................................................................................................................................45

Replacement Parts ......................................................................................................................................................................................................47Ordering Procedures ..................................................................................................................................................................................................48Warranty ......................................................................................................................................................................................................................52

2

Table of Contents

Thank you for selecting Barnstead|Lab-Line instrumentsfor your equipment needs. These instructions containimportant operating and safety information. The user mustcarefully read and understand these instructions beforeusing the unit. Your unit has been designed to optimizefunction, reliability, safety and ease of use. It is the user’sresponsibility to install the bath in conformance with localelectrical codes.

Safety Information

3

WarningWarnings alert you to a possibility ofpersonal injury.

CautionCautions alert you to a possibility ofdamage to the equipment.

NoteNotes alert you to pertinent facts andconditions.

Hot SurfaceHot surfaces alert you to a possibility ofpersonal injury if you come in contactwith a surface during use or for a periodof time after use.

Alert Signals

4

OverviewConventional refrigerators and freezers are not only unsuit-able for storing flammable materials; they can create poten-tial hazards in a facility. Such units have several compo-nents in their electrical and refrigeration systems that cantrigger explosions of flammable air-vapor mixtures inside theunit or from the immediate surrounding area.

Motors and thermostats are designed to prevent the arcingthat can ignite a flammable air-vapor mixture. In addition,each unit has wiring, splices, thermostats, relays and com-pressor motors safely housed within an explosion-proofenclosure, the construction being suitable for use in Class I,Groups C and D. This means that things like the surfacetemperature of compressors will remain below the flashpoint of any flammable material likely to be found in Class I,Groups C and D locations.

All models have heavy-gauge, rigid, braced-steel construc-tion with a durable enamel finish. Interiors have epoxyenamel or ABS plastic construction. Each unit is insulatedthroughout for energy-efficient operation.

These Lab-Line units will prevent potentially destructiveexplosions in any facility by meeting the standards estab-lished by Underwriters’ Laboratory, Inc., OSHA and NationalFire Protection Association for storage of hazardous materi-als.

Lab-Line Explosion-Proof Refrigerators and Freezers are100% explosion-proof. They also meet National FireProtection Standards as found in Articles 500-501 and pro-vide total protection while storing reagents at or below ambi-ent temperatures.

Explosion-Proof Refrigerators and Freezers

5

MODEL 3551, 3551-123-1/2” Wide, Two-door Refrigerator/Freezer

Features:• Overall 11 cu. ft.• Three adjustable shelves• Four door shelves • Hydraulic thermostat• Adjustable natural air-flow vent• Manual defrost• ABS plastic interior• White color

EXPLOSION-PROOF UNITS

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NOTE: Amps listed are at normal run mode, starting amps may be higher.

MODEL 3552, 3552-132” Wide, One-door upright freezer

Features:• Overall 20 cu. ft.• Built-in, even-cooling shelves• Four permanently positioned wire shelves• Locking door• Manual defrost• White color


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7

MODEL 3555, 3555-162” Wide, Chest freezer

Features:• Overall 18 cu. ft. • Key lock• Storage basket• Keylock lid• Manual defrost• White color



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MODEL 355723.5” Wide, Under counter refrigerator

Features:• Cold-wall design• Ample door storage• Adjustable thermostat• Rear rollers• Front legs level-adjust• Magnetic gasket• Sturdy metal hinges• Seamless one-piece

polypropylene liner• White color• One glass shelf


MODEL 3557-221.25” Wide, Under-counter freezer

Features:• Adjustable thermostat• Magnetic gasket• Hermetically-sealed compressor• Off-cycle defrost• White color

MODEL 3557-421.25” Wide, Under-counter refrigerator/freezer

Features:• One-piece seamless interior• Two rustproof, slide-out shelves• Adjustable foot• Drip tray• Manual defrost• White color

Note (3557)THIS UNIT IS DESIGNED FOR FREESTANDING INSTALLATION ONLY. ITMAY BE INSTALLED UNDER ACOUNTER ONLY IF SUFFICIENTSPACE FOR AIR FLOW IS PROVID-ED. IT IS SUGGESTED THE UNITBE RECESSED ONLY 21” TO PER-MIT EASY ACCESS TO THE LOCK.

Note (3557-4)THIS UNIT IS DESIGNED FORFREE STANDING INSTALLATIONONLY. IT MAY BE ENCLOSEDONLY IF SUFFICIENT SPACE ISPROVIDED FOR PROPER VENTI-LATION. 1” ON THE SIDES, TOPAND REAR, ARE RECOMMENDED.



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NOTE: Amps listed are at normal run mode, starting amps may be higher.8

9

MODEL 3559, 3559-123” Wide, Single-door refrigerator/freezer

Features:• Three adjustable shelves • Four door shelves• Adjustable thermostat• Manual defrost• White color





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MODEL 3560, 3560-132” Wide, One-door refrigerator

Features:• Aluminum or epoxy coated refrigeration components • Overall 20 cu. ft.• Five adjustable shelves (on 1” centers)• Manual defrost• Porcelain enamel interior• Stainless steel door liner over ABS plastic or

enameled steel• Key lock• White color

10



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11

MODEL 3566, 3566-132” Wide, One-door refrigerator

Features:• Copper evaporator coil refrigeration components• Overall 20 cu. ft.• Five adjustable shelves



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12

OverviewThese Lab-Line units will prevent potentially destructiveexplosions in any facility by meeting the standards estab-lished by Underwriters’ Laboratory, Inc., OSHA andNational Fire Protection Association for storage of haz-ardous materials. They also are designed to comply withNational Fire Protection Association Standards Nos. 45and 99, as well as OSHA Article No. CFR1910.308. Lab-Line Flammable Materials Storage Refrigerators/Freezersare manufactured for safe, cold storage of volatile materi-als.

Flammable Material Storage (FMS)Refrigerators/Freezers will prevent an explosion fromoccurring inside the unit. These units have no internalelectrical components that could trigger an explosion ofhazardous materials inside the unit. They are NOTdesigned for use in Class I, Groups C and D environ-ments. For these locations use a Lab-Line Explosion-Proof Refrigerator. However, FMS units are not suitablefor use in Class I, Group C and D environments.

These units are ideal for storing cyclopropane, ethyl ether,ethylene, acetone, alcohol, benzene, butane, gasoline,hexane, lacquer solvent vapors, naphtha, natural gas orpropane along with many other potentially hazardousmaterials. All cabinets have heavy-gauge steel construc-tion with a durable exterior finish of epoxy enamel. A wellinsulated cabinet and tight sealing magnetic door preventair leaks along with helping to lower operating costs. Theinterior is made of porcelain-enameled steel or ABS plas-tic.

Flammable Materials StorageRefrigerators and Freezers

13

MODEL 3551-10, 3551-1123.5” Wide, Two-door refrigerator/freezer

Features:• Overall 11 cu. ft. • Adjustable thermostat• ABS plastic interior• Manual defrost• White color

FLAMMABLE MATERIALS STORAGE UNITS

NoteIn order for freezer to reach -20°C, vent on inside upper rear of refrigeratormust be closed.



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14

MODEL 3552-10, 3552-1132” Wide one-door upright freezer

Features:• Overall 20 cu. ft. • Four permanent wire shelves• Six door shelves• Enameled steel interior with ABS plastic• Locking door• Manual defrost• White color



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15

MODEL 355623.5” Wide, no-frostunder-counter all refrigeratorwith key lock

Features:• Cold-wall design• Ample door storage• Adjustable thermostat• Rear rollers• Front legs level-adjust• Magnetic gasket• Sturdy metal hinges• Seamless one-piece

polypropylene liner• White color• One glass shelf


MODEL 3556-421.25” WideFront-opening freezer

Features:• Adjustable thermostat• Magnetic gasket• Hermetically-sealed

compressor• Off cycle defrost• White color

MODEL 3556-621.25” Wide Refrigerator/freezer

Features:• One-piece seamless interior• Two rustproof, slide-out shelves• Three in-door racks• Adjustable foot• Drip tray• Manual defrost• White color

NOTE (3556): THESE UNITSARE DESIGNED FOR FREESTANDING INSTALLATIONONLY. THEY MAY BEINSTALLED UNDER ACOUNTER ONLY IF SUFFI-CIENT SPACE FOR AIRFLOWIS PROVIDED. 1” ON THESIDES, TOP AND REAR ARERECOMMENDED.

NOTE (3556-6): THIS UNIT ISDESIGNED FOR FREE STANDINGINSTALLATION ONLY. IT MAY BEENCLOSED ONLY IF SUFFICIENTSPACE IS PROVIDED FOR PROP-ER VENTILATION. 1” ON THESIDES, TOP AND REAR ARE REC-OMMENDED.



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MODEL 3559-10, 3559-1123” Wide,Single-door refrigerator/freezer

Features:• Three adjustable shelves• Four door shelves• Adjustable thermostat• Manual defrost• ABS plastic interior• White color



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16

17

MODEL 3560-10, 3560-1132” Wide,One-door refrigerator

Features:• Aluminum or epoxy coated refrigeration components• Overall 20 cu. ft.• Five adjustable shelves (on 1” centers)• Manual defrost• Porcelain enamel interior• Stainless steel door liner over ABS plastic or

enameled steel• Key lock• White color



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MODEL 3566-10, 3566-1132” Wide,One-door refrigerator

Features:• Aluminum evaporation coil refrigeration components• Overall 20 cu. ft.• Five adjustable shelves (on 1” centers)



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18

19

OverviewThese are general-purpose units available in all refrigera-tor, all freezer and combination refrigerator/freezer mod-els.

Cool Lab, General-PurposeLaboratory Refrigerators/Freezers

MODEL 3750, 3750-1, 3750-2, 3750KP21.25” Wide,Refrigerator/freezer

Features:• One-piece seamless interior• Two rustproof, slide-out shelves• Three in-door shelves• Adjustable foot• Drip tray• Manual defrost• White color• Key lock (3750KP)• 1” port (3750KP)

MODEL 3751, 3751-123.33” Wide,Under-counter freezer

Features:• ABS plastic interior• Four adjustable shelves• Adjustable thermostat• Magnetic door gasket• White color• Key lock• One glass shelf

NOTE (3750 and 3751): THESE UNITS AREDESIGNED FOR FREE STANDING INSTAL-LATION ONLY. IT MAY BE INSTALLEDUNDER A COUNTER ONLY IF SUFFICIENTSPACE FOR AIRFLOW IS PROVIDED.

COOL LAB GENERAL-PURPOSE LABORATORY REFRIGERATORS/FREEZERS



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A/N )4.54(001 )5.45(021


20

21




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2573PK2573

6.1,002,06/021 A/N °51-ot°62-)°5ot°51-(

)4.54(001 )5.45(021

1-2573 8.0,002,05/042 A/N °51-ot°62-)°5ot°51-(

)4.54(001 )5.45(021

3573 2.1,441,05/042 A/N °02-ot°53-)°4-ot°13-(

)4.54(001 )5.45(021


MODEL 3752, 3752-1, 3752KP21.25” Wide,Under-counter freezer

Features:• Adjustable thermostat• Magnetic gasket• Hermetically-sealed compressor• Manual defrost• White color• Key lock (3752KP)• 1” port (3752KP)

MODEL 375324” Wide,Under-counter freezer

Features:• Exterior thermostat• High temperature alarm• Reversible door• 3 slide out drawers• Key lock• White color



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2573PK2573

A/N "51x"81x"5.72)mc83x64x07(

6.5 "62x"52.12x"5.33)mc66x45x58(

1-2573 A/N "51x"81x"5.72)mc83x64x07(

6.5 "62x"52.12x"5.33)mc66x45x58(

3573 A/N "61x"5.71x"32)mc14x44x85(

0.4 "42x"42x"43)mc16x06x68(


22


MODEL 375424” Wide,Front Venting Refrigerator0 Clearance Front and Sides

Features:• Automatic cycle defrost• 3 shelves• Built-in or freestanding• Interior light

MODEL 375524” Wide,Front Venting Freezer0 Clearance Front and Sides

Features:• Manual defrost• 3 shelves• Reversible door• Built-in or freestanding




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.tWpihS)gk(.sbL

4573 4.2,092,06/021 °21ot°01-)°35ot°41(

A/N )4.54(001 )5.45(021

5573 5.2,003,06/021 A/N °02-ot°5-)°4-ot°32(

)4.54(001 )5.45(021



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4573 "57.71x"57.02x"72)mc54x35x96(

A/N 0.6 "5.32x"42x"31.53)mc06x16x98(

5573 A/N "57.71x"57.02x"72)mc54x35x96(

0.6 "5.32x"42x"31.53)mc06x16x98(


23


MODEL 3756, 3756P20” Wide,Cube Size RefrigeratorReversible Door Swing

Features:• Adjustable thermostat• Automatic defrost• Front-mounted lock• 1 Interior shelf• 100% CFC Free

MODEL 375720” Wide,Cube Size FreezerReversible Door Swing

Features:• Adjustable thermostat• Manual defrost• Front-mounted lock• 100% CFC Free




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6573P6573

2.1,38,06/511 °7ot°1)°54ot°43(

A/N )02(74 )43(57

7573 2.1,38,06/511 A/N °01-ot°02-)°41ot°4-(

)22(94 )92(56



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6573P6573

"21x"5.51x"57.51)mc5.03x04x04(

A/N 8.1 "12x"02x"02)mc35x15x15(

7573 A/N "5.31x"41x"5.51)mc43x63x93(

6.1 "12x"02x"02)mc35x15x15(


24


MODEL 3761, 3761-131.5” Wide,Top Opening Chest Freezer

Features:• Key locking cover• Storage basket• Keylock lid• Manual defrost• White color

MODEL 3762, 3762-161.25” Wide,Top Opening Chest Freezer

Features:• Key locking cover• Storage basket• Keylock lid• Manual defrost• White color




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.tWpihS)gk(.sbL

1673 5.1,672,06/021 A/N °4-ot°12-)°42ot°5-(

)2.34(59 )8.65(521

1-1673 9.0,672,05/042 A/N °4-ot°12-)°42ot°5-(

)2.34(59 )8.65(521

2673 3.4,615,06/021 A/N °81-ot°82-)°0ot°81-(

)1.48(581 )9.09(002

1-2673 1.2,615,05/042 A/N °81-ot°82-)°0ot°81-(

)1.48(581 )9.09(002



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1673 A/N "5.61x"52.62x"82)mc24x76x17(

0.7 "52.42x"5.13x"53)mc76x08x98(

1-1673 A/N "5.61x"52.62x"82)mc24x76x17(

0.7 "52.42x"5.13x"53)mc76x08x98(

2673 A/N "52.22x"52.05x"82)mc75x821x17(

7.91 "5.92x"52.16x"53)mc57x651x98(

1-2673 A/N "52.22x"52.05x"82)mc75x821x17(

7.91 "5.92x"52.16x"53)mc57x651x98(


25


MODEL 3763, 3763-1, 3763-1K28” Wide,2-Door Refrigerator/Freezer

Features:• 2 door shelves• Adjustable thermostat• Magnetic door gasket• Automatic defrost• White color• 3763-1K with key lock

MODEL 3764, 3764-123” Wide,Single-Door Refrigerator/Freezer

Features:• 3 adjustable shelves• Manual defrost• White color




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.tWpihS)gk(.sbL

3673 5.3,024,06/021 °01ot°0)°05ot°23(

°0ot°02-)°23ot°4-(

)3.77(071 )4.68(091

1-3673 7.1,024,05/042 °01ot°0)°05ot°23(

°0ot°02-)°23ot°4-(

)3.77(071 )4.68(091

4673 0.3,063,06/021 °01ot°1)°05ot°43(

°6-ot°71-)°12ot°1-(

)5.45(021 )42.86(051

1-4673 5.1,063,05/042 °01ot°1)°05ot°43(

°6-ot°71-)°12ot°1-(

)5.45(021 )42.86(051



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3673 "5.51x"52x"5.63)mc93x46x39(

"61x"42x"52.51)mc14x16x93(

6.41 "92x"82x"5.16)mc47x17x651(

1-3673 "5.51x"52x"5.63)mc93x46x39(

"61x"42x"52.51)mc14x16x93(

6.41 "92x"82x"5.16)mc47x17x651(

4673 "52.71x"57.91x"23)mc54x05x18(

"21x"52.71x"8)mc13x44x02(

0.01 "52x"32x"85)mc46x85x741(

1-4673 "52.71x"57.91x"23)mc54x05x18(

"21x"52.71x"8)mc13x44x02(

0.01 "52x"32x"85)mc46x85x741(



MODEL 3766, 3766-132” Wide,1-Door Refrigerator

Features:• Manual defrost• 5 adjustable shelves on 1” centers• 1 storage basket• Adjustable thermostat• White color

MODEL 3767, 3767-132” Wide,Upright Freezer

Features:• Overall 20 cu. ft.• 6 door shelves• Enameled steel interior• Key lock• Manual defrost• White color

MODEL 3767BR27Has same features as model 3767 except a buzzer alarmand single pen recorder are included

MODEL 377019” Wide,Benchtop Refrigerator/Freezer

Features:• Overall 1.9 cu. ft.• Removable shelf• Manual defrost• White color




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.tWpihS)gk(.sbL

6673 0.4,084,06/021 °9ot°5-)°95ot°32(

A/N )5.901(142 )5.921(582

1-6673 0.2,084,05/042 °9ot°5-)°95ot°32(

A/N )5.901(142 )5.921(582

7673 3.4,615,06/021 A/N °5-ot°32-)°32ot°9-(

)3.201(522 )1.901(042

1-7673 1.2,615,05/042 A/N °5-ot°32-)°32ot°9-(

)3.201(522 )1.901(042

0773 1.1,231,06/021 °7ot°0)°54ot°23(

°0ot°5-)°23ot°32(

)9.02(54 )6.32(25



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6673 "57.71x"72x"75)mc54x96x541(

A/N 0.02 "5.92x"23x"17)mc57x18x081(

1-6673 "57.71x"72x"75)mc54x96x541(

A/N 0.02 "5.92x"23x"17)mc57x18x081(

7673 A/N "81x"72x"75)mc64x96x541(

0.02 "5.92x"23x"17)mc57x18x081(

1-7673 A/N "81x"72x"75)mc64x96x541(

0.02 "5.92x"23x"17)mc57x18x081(

0773 "11x"52.61x"52.51)mc82x14x93(

"52.8x"52.6x"6)mc12x61x51(

7.1 "5.91x"91x"91)mc05x74x74(


NoteModel 3770, allow the followingclearance: Top - 12”, Back - 5”,Sides - 1/2”

26

27


MODEL 377124” Wide,Combination Refrigerator/Freezer

Features:• 4 adjustable refrigerator shelves• 2 adjustable freezer shelves• Automatic defrost• Reversible doors• Key lock• Front mount thermostat• Designed to fit under overhead counters• White color

MODEL 3772, 3772P23.5” Wide,Combination Refrigerator/Freezer

Features:• 4 adjustable refrigerator shelves• 3 fixed freezer shelves• Automatic defrost refrigerator• Manual defrost freezer• Reversible doors• 2 independent adjustable thermostat• 2 independent compressors• White color• Model 3772P includes two 2” (5 cm) ports




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.tWpihS)gk(.sbL

1773 0.1,021,06/021 °7ot°6-)°54ot°12(

°8-ot°02-)°81ot°4-(

)37(061

2773P2773

4.5,846,06/021 °7ot°2)°54ot°53(

°61-ot°82-)°3ot°81-(

)78(291 )29(202



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1773 "41x"5.81x"5.53)mc63x74x09(

"52.01x"5.81x"31)mc72x74x33(

8.8 "32x"42x"16)mc925x16x551(

2773P2773

"61x"91x"53)mc14x84x98(

"61x"71x"82)mc14x34x17(

8.11 "52x"5.32x"5.87)mc36x06x991(


Shipping CartonThis should be inspected upon delivery. When received,carefully examine for any shipping damage beforeunpacking. If damage is discovered, the delivering carriershould both specify and sign for the damage on your copyof the delivery receipt.

Open the carton carefully making certain that all parts areaccounted for before packaging materials are discarded.After unpacking, if damage is found, promptly report it tothe carrier and request a damage inspection promptly.

IMPORTANT: Failure to request an inspection of damagewithin a few days after receipt of shipment absolves thecarrier from any liability for damage. You must call for adamage inspection promptly.

UnpackingUse the list below when unpacking to verify that the com-plete unit has been received. Do not discard packingmaterials until all is accounted for.

The following items are included in the shipment:Refrigerator/FreezerOperation Manual 057-196-00Volt Warning Tag - 240V 528-609-00Registration Card 528-022-00Inspection Tag 528-028-00

LocationLocate your unit in the most convenient place and near agrounded electric outlet. If units are placed on a counter-top, the front should be 3" or more back from the edge toavoid accidental tipping of the unit.

If possible, locate your unit out of direct sunlight and awayfrom heat sources such as a radiator, stove or heat duct.

ClearancePosition the unit so that there is at least 12” clearance onthe top, 3” at the back, and 2” on each side. It is recom-mended that even more space be left at the back of theunit in case maintenance is required.

Unpacking and Installation

28

ElectricalUnits must be connected to a grounded outlet matchingthe nameplate and/or the information furnished in thismanual.

If you are not sure about the outlet, you should contact aqualified electrician for assistance.

The unit should always be connected to its own individualoutlet.

Be AdvisedWARNING: UNLESS UNIT IS SPECIFICALLYDESIGNED FOR COMBUSTIBLE OR FLAMMABLEATMOSPHERES DO NOT USE IN THE PRESENCE OFFLAMMABLE OR COMBUSTIBLE MATERIALS OREXPLOSIVE GASES. DO NOT USE IN THE PRES-ENCE OF PRESSURIZED OR SEALED CONTAINERS—FIRE OR EXPLOSION MAY RESULT CAUSING DEATH.

CAUTION: BEFORE CONNECTING THE FINAL POWERSUPPLY, CHECK THE ELECTRICAL CHARACTERIS-TICS OF THE UNIT NAMEPLATE TO SEE THAT IT IS INAGREEMENT WITH THE POWER SUPPLIED. IN ADDI-TION, POWER SHOULD BE WIRED TO THE UNITACCORDING TO THE ELECTRICAL SCHEMATIC ANDALL APPLICABLE CODES. ONLY QUALIFIED ELECTRI-CIANS SHOULD WORK ON THE ELECTRICAL POR-TION OF ANY UNIT INSTALLATION.

CAUTION: STORAGE BY USER OF ANY MATERIALSIN THE PRODUCT THAT MAY CAUSE A DETERIORA-TION OF THE PRODUCT SHALL BE DEEMED TO CON-STITUTE ABNORMAL AND IMPROPER USAGE OF THEPRODUCT FOR PURPOSES OF LAB-LINE’S WARRAN-TY.

WARNING: RISK OF CHILD ENTRAPMENT! Before youdiscard your old refrigerator or freezer:

• Remove door(s),

• Leave the shelves in place so that children maynot easily climb inside.

29

INSTALLATION

CautionDO NOT REMOVE, under any cir-cumstance, the grounding prongsfrom the 3-prong power cord sup-plied with all units.

CautionDO NOT USE electrical extensioncords that may result in voltage lossand possible hazardous operation.

CautionRisk of electric shock. (For unitswith B, R27 and R30 options.) THisequipment has two power supplycords. Unplug all cords before mov-ing or servicing this equipment.

WarningExplosion-proof units do not comewith line cords. They require rigidconduit to be run directly in order toseal off the fitting on thermostathousing. This should be done by alicensed electrician and follow alllocal and electrician and follow alllocal electrical codes. If any ques-tions pertaining to electrical safetyarises, please refer to article 501 ofthe National Electrical Code.

How to Seal Killark® Box Conduit with Fiber andSealing Compound to Help Protect AgainstExplosions (Explosion-Proof Units Only):

The purpose of the procedure that follows is to build fiberrope dams on the left and right hubs of the horizontal conduit.The fiber rope damns will surround conduit wiring that ishoused inside the horizontal conduit.

When both the left and right fiber rope dams have beenpressed into place, sealing compound is poured between thetwo and forms into an airtight plug.

All of this is done in order to prevent the very real threat ofgas entering the Killark box and a resulting serious explosion.

After the unit wires have been pulled through the horizontalconduit the following procedure is required:

• Turn power off at the circuit breaker before proceed-ing.

• Place a small amount of sealing compound gran-ules, enclosed, into a clean mixing vessel. Addsmall amounts of water while stirring until a thickpaste is formed, then carefully continue addingsmaller amounts of water until a thick gravy consis-tency is achieved—NOT WATERY. Discard anymaterial that becomes too stiff to use. Neverattempt to restore workability by stirring in morewater.

• Locate silver Killark box, back/top-center of unit.

• Unscrew conduit domed-cover.

INSTALLATION

Unscrew and Remove Cover

Left Hub

Conduit Domed-Cover

Conduit Opening

Horizontal Conduit

Right Hub

Figure 1: Sealing the Killark Box30

• Insert fiber rope material down into horizontal conduit opening. Pressing down firmly, work the material intothe left hub and—most importantly—being sure the material COMPLETELY SURROUNDS THE WIRING,from the top to the bottom, completely blocking this end of the horizontal conduit.

31

INSTALLATION

Left Hub Right Hub

Wiring

Figure 2: Horizontal Conduit, Cutaway

• Insert fiber rope material down into horizontal conduit opening. Pressing down firmly, work the material intothe right hub and—most importantly—being sure the material COMPLETELY SURROUNDS THE WIRING,from the top to the bottom, completely blocking this end of the horizontal conduit.

32

INSTALLATION

• Pour sealing compound down in between the two fiber rope dams filling the remaining space. Pour slowly,being careful not to trap air bubbles. Immediately wipe off any spilled sealing compound.

• Screw conduit domed-cover back onto conduit opening.

NOTE: INITIAL SETUP OF SEALING COMPOUND WILL OCCUR IN APPROXIMATELY 30 MINUTES HOW-EVER, THE SEALING COMPOUND REQUIRES A MINIMUM OF 8 HOURS ABOVE 32ºF TO DEVELOPSUFFICIENT STRENGTH TO WITHSTAND EXPLOSIONS.

33

Environmental Operating ConditionsPOLLUTION DEGREE*: 2INSTALLATION CATEGORY*: IIALTITUDE: 2000 Meters MSL (Mean Sea Level)HUMIDITY: 80% maximum, non-condensingELECTRICAL SUPPLY: 120VAC or 240VACVOLTAGE TOLERANCE: ±10% of normal rated lineTEMPERATURE: 15ºC to 40ºCPRODUCT USAGE: This product is intended for use indoors only

Operation

Start-Up ProcedureRotate the control knob clockwise to lower the tempera-ture and counterclockwise raise it.

To check chamber temperature, place a dial thermometeron a shelf in the center of the chamber. Initially, rotate thetemperature control knob to an arbitrary setting. Allowapproximately 2 hours for the temperature to initially stabi-lize. Check the temperature and compare with the dialsetting.

Adjust dial further to reach the desired operating tempera-ture. After chamber initially stabilizes, allow 1/2 to 1 hourfor the chamber temperature to stabilize after subsequenttemperature adjustments.

Because the markings on the dial do not indicate specifictemperatures, use them AS REFERENCE POINTS ONLYfor any future setting of the temperature.

If the room thermostat is turned below 60ºF at night, con-sider setting the temperature control one step colder. Itshould be left at this setting for the nighttime period;return temperature control to original setting when theroom thermostat is returned to its normal setting.

Restart ProcedureIf unit is unplugged or turned off, allow 3 minutes beforerestarting or plugging it back in.

*Refer to IEC 664-1

Control Panel Lights(Model 3753)

• Warning Lamp, Top, Red: This light works onlyfor the freezer compartment. It illuminates whenthe temperature decreases from the set pointthen turns off when the freezer has achieved setpoint again. This lamp will also light when theunit is turned on and is still at room temperatureand will turn off when the unit begins to cool.

• Deep Freezing, Bottom, Yellow: This light willglow when the thermostat is rotated fully clock-wise to “super.” This position keeps the com-pressor fully on until the normal cycle for thefreezer is turned on. It will get to the low-endtemperature faster until you want to regulate thetemperature. The deep freeze (super) modecan be kept on at all times if desired.

1. WARNING LAMP

2. POWER INDICATOR (GREEN)

3. BUTTON FOR DEEP-FREEZING

4. THERMOMETER FOR THE FREEZING SEC-TION

5. LAMP FOR THE REFRIGERATOR SECTION

6. THERMOSTAT FOR THE FREEZER SECTION

7. THERMOSTAT FOR THE REFRIGERATORSECTION

8. INDICATOR LAMP FOR DEEP-FREEZING(YELLOW)

34

OPERATION

2 1 3

8

4 5 6 7

3772 Control Panel

35

How to Save Energy• Be sure to follow location suggestions as men-

tioned in the previous INSTALLATION section.

• Wipe moisture from glassware or other materialsbefore placing them in a unit.

• Don't overcrowd the unit. Too many items canincrease electrical energy demand in order tokeep everything cool.

• Close the door as soon as possible in hot,humid weather.

• Make certain that the door is closed tightly.

• As soon as frost has accumulated to 1/4”,defrost.

• Keep containers covered, when possible, toreduce moisture buildup.

• Set operating temperature no colder than neces-sary for the items being refrigerated.

Safety Tips• After a unit is in operation, do not touch the cold

surfaces, particularly when hands are damp.Skin may adhere to the extremely cold surfaces.

• Never disconnect your unit by pulling on thepower cord. Always grip the plug securely andpull straight out from the outlet.

• Do not use a power cord that shows cracks orabrasions. Have a qualified electrician repair orreplace damaged cords immediately.

OPERATION

36

Optional Equipment

16

7

8

9

2

3

54

POWER

ADJUST

HIGHALARM

DISPLAY

ALARMDELAY

ALARMSTATUS LAMP

ADJUST

LOWALARM

DISPLAY

10 10

TEMPERATURE DISPLAY (4): Digital devices generally do not round off a reading. In thecase of this temperature monitor, when the displayreports, say a value of 10 degrees, that “10” can repre-sent any temperature from 10.0 to 10.9 degrees.Therefore, a very small change (0.1 degree or less), or aminor electronic disturbance many cause the displayedtemperature to change one digit. Only when the displayedtemperature is changing within a period of 20 seconds orgreater can the change be related to real thermal changesin the space of time being monitored.

READING AND ADJUSTING ALARM POINTS:To read or set alarm points press the Display button (10)under the HIGH (3) or LOW ALARM DISPLAY (9) andwhile keeping it depressed, turn the adjustment screw(s)located under ADJUST (2, 8) slowly to set the desiredalarm setpoint. (On dual alarm points, only ONE settingcan be adjusted at a time.)

NoteThe alarm status lamp (6) will flashrapidly and the audio will sound inshort pulses during an adjustment.

Optional Buzzer Alarm

37

OPTIONAL EQUIPMENT

ALARM CONDITIONS:• HIGH SETPOINT ALARM: If the probe tempera-

ture exceeds the HIGH setpoint (or falls belowthe LOW setpoint on dual setpoint models), theaudio alarm will sound the red ALARM statuslamp (6) will flash.

The unit’s audio alarm can temporarily besilenced by depressing the DELAY button (7).The alarm is shipped set with a 30-minute delay.During the delay period, the alarm will chirpabout every 30 seconds and the alarm statuslamp (6) to flash during the delay period.

If the alarm condition is still present at the endof the preset 30-minute delay period, the audioalarm will turn on with full intensity.

• LOW TEMPERATURE ALARM (9): This alarm istriggered by the temperature falling below thedesired setpoint. It is important that this lowalarm point be set at a lower temperature thanthe high alarm.

RELAY OUTPUT:The relay output consists of a SPDT relay that changesstate with a loss of line power OR the presence of analarm condition. The contacts are rated at 30V/1Amp.

Optional RecorderThe recorder is mounted, wired and ready for operation.You have only to install chart, set correct time and applypower to begin recording.

• Note handle on the right side of the recorder.Grasp handle and pull out to release door lock-ing mechanism.

• A chart will be in place and indicate that factorycalibration and testing of the recorder has beenperformed.

• Note that the tip of the pen has a sleeveinstalled to protect the tip during shipment.Carefully lift pen arm and remove the sleeve.

• Unscrew knurled nut holding the chart arm untilit can move away freely. While holding the penarm away from the chart, remove the existingchart and replace with a new chart (furnished).

• While still holding the pen arm up, use the timeindex arrow on the chart plate as a referencepoint to adjust the new chart to the correct dayof the week and time of day.

• Place the pen carefully in position on the dayand time line selected and then tighten theknurled nut to secure the chart firmly in place.Close and secure the door of the recorder.

• The recorder in this instance has its own powercord that now must be connected to powersource.

• Connect cord from the main unit to correctpower source.

• Recording will now begin. Note that chart isdesigned for 7-day recording. If necessary,recording may be interrupted prior to the com-pletion of 7-day cycle. To interrupt, disconnectpower to the recorder and remove chart, if sodesired.

• An additional pen tip is contained in a plasticcontainer just inside the door. When replace-ment of the pen is required, remove power fromthe recorder. Carefully pick up the end of thepen and push out from the penholder. To installnew pen, slide pen into holder and gently pushdown until it locks into place.

• As a safety precaution, disconnect recorder frompower source prior to performing procedures,such as interruption of recording, chart replace-ment, chart adjustment, pen adjustment and penreplacement.

• Only qualified electrical personnel should bepermitted access to operating mechanism andwiring for inspection, maintenance or repair.

38

OPTIONAL EQUIPMENT

39

Troubleshooting

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In the event that your unit is not operating properly, check the following before calling for service assistance—this may save you the cost of unnecessary service calls.

40

Cleaning of Units• Disconnect power cord from its outlet.

• Set the temperature control to the OFF position.

• The unit designs permit easy and rapid cleaningand should not take more than a few minutes.Remember to wear protective gloves to preventfrost bite, especially when removing items fromfreezer units.

• Do not use abrasive scouring powders, waxes,solvents, furniture polish, undiluted detergents orcleansers containing petroleum products on thesurfaces of units.

Interior/Exterior and Door GasketsA solution of mild soap and water can be used for clean-ing the interior, exterior and door gaskets with a soft,clean cloth. Rinse with clean water and dry thoroughlybefore reconnecting and turning on the unit.

CondenserWith forced-fan vented units, remove the screws thatmount the grill to the unit. Pull temperature control knobsstraight out. This will expose condenser for cleaning.

Maintenance

WarningDisconnect plug from electrical outletbefore attempting any maintenanceor repair of this unit.

Any internal adjustments or repairsmust be performed by a qualifiedservice representative.

NoteMake no attempt to service or repaira Barnstead|Lab-Line product underwarranty before consulting yourBarnstead|Lab-Line Dealer. After thewarranty period, such consultation isstill advised, especially when therepair may be technically sophisticat-ed or difficult.

If assistance is needed beyond whatthe distributor can provide, pleasecall Barnstead|Lab-Line CustomerService Department: 1-800-553-0039.

No merchandise, however, should bereturned directly to Barnstead|Lab-Line without prior written approvalfrom Barnstead|Lab-Line.

41

Manual Defrost Procedure(Models 3556-4, 3556-6, 3557-2, 3557-4, 3750,3750-1, 3752 and 3752-1)

Use the following procedure to defrost manually:• Rotate the temperature control knob to the OFF

setting.

• Disconnect the power cord from its outlet.

• Remove contents of unit. If practical, wrap con-tents in paper and then in a heavy blanket tomaintain temperature of items, especially thoseremoved from a freezer. Wear protective glovesto prevent frostbite when handling cold items.

• Open door and allow free circulation of ambientair.

• To speed the process, place pan of warm waterinside the chamber.

• Wipe out the interior.

• Replace contents.

• Reconnect power cord to outlet and set temper-ature control to desired operating temperature.

MAINTENANCE

CautionDo not use any sharp instrument,blade or scraper to remove ice andfrost on refrigerator surfacesbecause of the very real danger ofpuncturing the cooling coil.

CautionDo not use any electrical device todefrost the unit.

When frost accumulates to 1/4" ormore, the operating efficiency of theunit will be affected.

Manual Defrost Procedure(Model 3772 Only)

Use the following procedure to defrost manually:1. Turn the temperature control knob to the 0 set-

ting.

2. Disconnect the power cord from its outlet.

3. Remove contents of unit. If practical, wrap con-tents in paper and then in a heavy blanket tomaintain temperature of items, especially thoseremoved from a freezer. Wear protective glovesto prevent frostbite when handling cold items.

4. Open door and allow free circulation of ambientair.

5. Fold out the draining spout, mount the enclosedextension and place a bowl under it.

6. To speed the process, place a pan of warmwater inside the chamber.

7. Wipe out the interior when all frozen condensatehas thawed.

8. Replace contents.

9. Reconnect power cord to outlet and set temper-ature control to desired setting.

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MAINTENANCE

CautionDo not use any sharp instrument,blade or scraper to remove ice andfrost on refrigerator surfacesbecause of the very real danger ofpuncturing the cooling coil.

CautionDo not use any electrical device todefrost the unit.

When frost accumulates to 1/4" ormore, the operating efficiency of theunit will be affected.

Model 3772 Illustrating drip pan position

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MAINTENANCE

Reversing the Front Door (Model 3551)

1. Switch off at the socket outlet and pull out the mainsplug.

2. Remove all food from the appliance.

3. Using a cross-headed screwdriver, remove the tophinge screws.

4. Remove the top hinge while holding the door.

5. Lift the door carefully from the lower hinge.

6. Remove the lower hinge.

7. Reposition the upper hinge.

8. Remove the lower hinge plugs. Remove plugs withtip of small a screwdriver.

9. Reposition the door hinge bushing and plugs on theopposite side.

10. Reposition the lower hinge on the opposite side andfit the hinge washer.

11. Refit the door.

12. Locate the top hinge in the door and loosely attachto the cabinet.

13. Align the door and then tighten screws firmly on thetop hinge. Check that the door open and closeseasily. Make sure there are no gaps that wouldallow air into the cabinet, adjust the top hinge if nec-essary.

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Reversing the Front Door (Model 3556, 3557 and 3751)

1. Remove bolts and plugs using a screwdriver.

2. Unscrew the bolts connecting the upper hinges tothe upper platform. Remove the upper platform byfirst pulling it forward and then lifting it upwards.

3. Remove the door by unscrewing the bolts in theupper hinges.

4. Remove the buffer by unscrewing the bolts on bothof its sides.

5. Break off the part behind the buffer through whichthe lower hinges pass using a knife or your hands.

6. Remove the lower hinge and mount it on the otherside tightening its bolts.

7. Remove the hole plugs of the door handle with aknife.

8. Fit the hole plugs of the door handle to the otherside.

9. Fit the buffer to its place.

10. Mount the door to its place.

11. Fit the upper hinges into their places—do not tightenthe bolts, but leave then loose.

12. Adjust the vertical and parallel position of the doorby eyesight then tighten the bolts of the upperhinges.

13. Fit the upper platform into its place.

14. Fit the bolts connecting the upper hinges and theupper platform but, do not tighten them.

15. Adjust the upper platform until it is level, then tightenthe bolts in operations

16. Fit the plugs of the upper platform.

MAINTENANCE

Reversing the Front Door (Model 3772)

1. Turn thermostats to 0 and disconnect power cords

2. Remove all items from inside the appliance

3. Using the proper hex screwdriver, remove the tophinge screws

4. Remove the top hinge while holding the door

5. Lift the door carefully from the middle hinge

6. Remove the middle hinge and lift the lower door offof pivot

7. Remove the kick panel. Unscrew nuts and pivot,remount on the opposite side of the angle iron.

MAINTENANCE

45

46

8. Remove plastic caps on the new middle hinge side.Remove screw and mount lower door and fastenmiddle hinge

9. Remove the door handle by removing mountingscrews and remount on opposite side

10. Mount the upper door on pivot and fasten the upperhinge on opposite side then tighten screws

11. For adjustment of doors, loosen screws and reposi-tion door into place and tighten screws

12. Move handle to opposite side of door

MAINTENANCE

To obtain replacement parts information and pricing,please call the Barnstead International Customer ServiceDepartment at 1-800-553-0039 and have the unit’s model,serial and code numbers available. This information islocated on data plates on the rear of the unit.

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Replacement Parts

48

Ordering Procedures

Please refer to the Specification Plate for the completemodel number, serial number, and series number whenrequesting service, replacement parts or in any corre-spondence concerning this unit.

All parts listed herein may be ordered from theBarnstead International dealer from whom you pur-chased this unit or can be obtained promptly from thefactory. When service or replacement parts are neededwe ask that you check first with your dealer. If the dealercannot handle your request, then contact our CustomerService Department at 563-556-2241 or 800-553-0039.

Prior to returning any materials to BarnsteadInternational, please contact our Customer ServiceDepartment for a “Return Goods Authorization” number(RGA). Material Returned without an RGA number willbe returned.

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Barnstead International (“BARNSTEAD”) warrants that a product manufactured by Barnstead shall be free ofdefects in materials and workmanship for one (1) year from the first to occur of (i) the date the product is sold byBARNSTEAD or (ii) the date the product is purchased by the original retail customer (the “CommencementDate”). Except as expressly stated above, BARNSTEAD MAKES NO OTHER WARRANTY, EXPRESSED ORIMPLIED, WITH RESPECT TO THE PRODUCTS AND EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES,INCLUDING BUT NOT LIMITED TO, WARRANTIES OF DESIGN, MERCHANT ABILITY AND FITNESS FOR APARTICULAR PURPOSE.

An authorized representative of BARNSTEAD must perform all warranty inspections. In the event of a defectcovered by BARNSTEAD’s warranty, BARNSTEAD shall, as its sole obligation and exclusive remedy, provide freereplacement parts to remedy the defective product. In addition, for products sold by BARNSTEAD within the continental United States or Canada, BARNSTEAD shall provide provide free labor to repair the products with thereplacement parts, but only for a period of ninety (90) days from the Commencement Date.

BARNSTEAD’s warranty provided hereunder shall be null and void and without further force or effect if there isany (i) repair made to the product by a party other than BARNSTEAD or its duly authorized service representa-tive, (ii) misuse (including use inconsistent with written operating instructions for the product), mishandling, contamination, overheating, modification or alteration of the product by any customer or third party or (iii) use ofreplacement parts that are obtained from a party who is not an authorized dealer of BARNSTEAD.

Heating elements, because of their susceptibility to overheating and contamination, must be returned to theBARNSTEAD factory and if, upon inspection, it is concluded that failure is due to factors other than excessivehigh temperature or contamination, BARNSTEAD will provide warranty replacement. As a condition to the returnof any product, or any constituent part thereof, to BARNSTEAD’s factory, it shall be sent prepaid and a prior written authorization from BARNSTEAD assigning a Return Materials Number to the product or part shall beobtained.

IN NO EVENT SHALL BARNSTEAD BE LIABLE TO ANY PARTY FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, OR FOR ANY DAMAGES RESULTING FROM LOSS OF USEOR PROFITS, ANTICIPATED OR OTHERWISE, ARISING OUT OF OR IN CONNECTION WITH THE SALE,USE OR PERFORMANCE OF ANY PRODUCTS, WHETHER SUCH CLAIM IS BASED ON CONTRACT, TORT(INCLUDING NEGLIGENCE), ANY THEORY OF STRICT LIABILITY OR REGULATORY ACTION.

The name of the authorized Barnstead International dealer nearest you may be obtained by calling 1-800-446-6060 (563-556-2241) or writing to:

One Year Limited Warranty

2555 Kerper BoulevardDubuque, Iowa 52001-9918 Phone: 563-556-2241 or 800-553-0039 Fax: 563-589-0516E-mail: [email protected]

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