308297a precisionmix solenoid enclosure€¦ · 3. conductors must travel from the non-hazardous...

16
1902 INSTRUCTIONS–P ARTS LIST 308–297 Rev. A PrecisionMixt Solenoid Enclosure For use with the PRECISIONMIX Plural Component Mixing System 100 psi ( 7 bar) Maximum Air Inlet Pressure Part No. 948–819, Series A Solenoid Enclosure GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441 ECOPYRIGHT 1993, GRACO INC. This manual contains important warnings and information. READ AND RETAIN FOR REFERENCE

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Page 1: 308297A PrecisionMix Solenoid Enclosure€¦ · 3. Conductors must travel from the non-hazardous area to the hazardous area by the shortest, most direct route. 4. Ground the cable

1902

INSTRUCTIONS–PARTS LIST 308–297Rev. A

PrecisionMix ��Solenoid EnclosureFor use with the PRECISIONMIX Plural Component Mixing System

100 psi ( 7 bar) Maximum Air Inlet Pressure

Part No. 948–819, Series ASolenoid Enclosure

GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441�COPYRIGHT 1993, GRACO INC.

This manual contains important warnings and information. READ AND RETAIN FOR REFERENCE

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WARNINGSElectrical equipment shall only be installed, operated, and serviced

by trained, qualified personnel who shall be fully conversant with the requirements stated within this instruction manual.

Serious bodily injury , explosion, fire, or electric shock can occur if theprecautions below are not followed. Read and understand all instruction

manuals and warning labels before operating the equipment.

FIRE, EXPLOSION OR ELECTRIC SHOCK HAZARDStatic electricity can be generated by the flow of fluidthrough your system’s pump, hose, and dispensingdevice. Sparks can ignite fumes from solvents and thefluid being sprayed, dust particles and other flammablesubstances and can cause a fire or explosion and seri-ous injury and property damage.

Static electricity is dissipated through proper ground-ing. To reduce the risk of fire, explosion, or electricshock, which may result from electrical discharge, it isessential that:

� All parts of the system are properly grounded.� All personnel in or close to the spray area are prop-

erly grounded.� All electrically conductive objects or devices in the

spray area, including paint containers, wash cansand tools, are properly grounded.

If you experience any static sparking or feel even aslight shock while using the system, stop operatingthe system immediately . Check for proper groundingof the entire system. Do not use the system again untilthe cause of the problem is identified and corrected.

Do not install or service this equipment unless you aretrained and qualified. All wiring and electrical trouble-shooting must be done by a qualified electrician.

Grounding the SystemBe sure your system is connected to a true earthground. Check your local electrical code and otherequipment manuals for further grounding instructions.

Grounding the Solenoid EnclosureTo prevent static charge buildup on the solenoidenclosure, always ground the enclosure as instructedon page 5.

Complying to CodesBe sure your installation complies with national stateand local codes for the installation of electrical appara-tus in a Class �, Group D, Division 1 Hazardous Loca-tion, including all of the local safety fire codes, NFPA33, NEC 504 and 516, and OSHA 1910.107.

Non-Hazardous Location Wiring1. Connections and wiring in the non-hazardous loca-

tion must be prevented from contacting any haz-ardous location wires or terminations.

2. At least 2 in. (50 mm) of clearance distance mustbe maintained between the intrinsically safe andnon-intrinsically safe wiring. Use tie wraps.

3. Intrinsically safe and non-intrinsically safe wiringmust be kept separate with a raceway, wire lacing,wire ties or equal.

4. Non-hazardous location equipment must not havea potential that exceeds 250 volts DC or 250 voltsAC RMS.

Hazardous Location W iring1. A barrier module must be used if the solenoid

enclosure is used in a hazardous location. ConsultGraco application engineering for the proper barri-er.

2. Conductors on the hazardous side, must not beconnected through plugs, cables, terminal blocks,or other devices that contain non-intrinsically safewiring.

3. Conductors must travel from the non-hazardousarea to the hazardous area by the shortest, mostdirect route.

4. Ground the cable shield on one end only.

5. The maximum allowable cable length to the sole-noid enclosure is 1000 ft (305 m).

Flushing and Cleaning SafetyBe sure all electrical power is off before cleaning thesolenoid enclosure.

To clean the exterior of the solenoid enclosure, alwaysuse solvents with a flash-point of higher than 100� F(38� C).

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EQUIPMENT MISUSE HAZARDGeneral SafetyAny misuse of the solenoid enclosure such asexceeding the maximum air inlet pressure, modifyingparts, or using worn or damaged parts, can causeparts to fail, and can result in serious bodily injury,electric shock, fire, explosion, or property damage.

Always relieve all air pressure to the solenoid enclo-sure before servicing the solenoid enclosure or spraygun.

Never alter or modify any electrical components or cir-cuits as this could cause a fire or explosion.

Repair or replace worn or damaged parts immediately.Use only genuine Graco replacement parts.

Always disconnect the electric power before removingor connecting the solenoid enclosure.

When using the solenoid enclosure in a hazardousarea, equipment that will come in contact with theintrinsically safe terminals absolutely must be rated forIntrinsic Safety. This includes such things as a DC volt-age meter or ohmmeter used in troubleshooting,cables, and connections.

System PressureThe solenoid enclosure has a Maximum Air Inlet Pres-sure of 100 psi (7 bar). Never exceed the maximum airpressure of the solenoid enclosure or any other com-ponent or accessory used in the system.

IMPORTANTUnited States Government safety standards have been adopted under the Occupational Safety and Health Act. These

standards––particularly the General Standards, Part 1910 and any other appropriate regulations––should be consulted inconnection with the installation, operation, and maintenance of electrostatic spray equipment.

Table of ContentsWarnings 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installation 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Wiring and Cable Connections 6. . . . . . . . . . . . . . . . . . .

Air Line Connections 7. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operation 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Troubleshooting 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parts 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Dimensions 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Technical Data 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Accessories 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Graco Phone Number Back Cover. . . . . . . . . . . . . . . . . .

Warranty Back Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installation

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02089

HAZARDOUSAREA

NON–HAZARDOUSAREA

HAZARDOUSAREA

* IMPORTANT: Electrical connectionsmust comply with all national, state, andlocal codes.

*S

*T

*Z*W

A

X X AL

*Y

AP

AA*

AB*AD

B

LF

B

C

U P

V

R

Q

ANANANAE AF AM

X ADX ADX AD

AH*

C

D

N

M

D

AC*

*AG

AK

AJ

KEYA Air Supply LineB Fluid Filter (100 mesh minimum) and

fluid component inlet to PrecisionMixC Check ValveD Flow MeterE Component A (Resin) ValveF Air Purge ValveJ Component B (Catalyst) Supply LineK Component B (Catalyst) ValveL Solvent Purge ValveM IntegratorN Static MixerP Fluid Supply Line to GunQ Component A (Resin) Supply Line

R Air HoseS Main Power SwitchT 115V 60 Hz Electrical SupplyU Fluid Pressure Regulator & GaugeV Spray GunW PendantX Bleed-Type Air Valve (required)Y Ground Wire & Clamp 222–011

(Required)Z PrecisionMix Controller

(in NEMA enclosure)AA Prewired CableAB Operator Switch

AC Solenoid EnclosureAD Air Regulator & GaugeAE Supply Tank, Component A (Resin)AF Supply Tank, Component B (Catalyst)AG Meter CableAH Earth GroundAJ Solenoid Air LinesAK Air Flow SwitchAL Air Line Filter (10 micron or better)AM Supply Tank, SolventAN Fluid Shut-off ValveAP Air Solenoid ValvesAQ Solvent Supply Line

J

AQ

E K

Fig 1

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InstallationHow the Solenoid Enclosure OperatesThe solenoid enclosure receives an electric signal fromthe PrecisionMix controller. An appropriate signal isgiven to open and close the solenoid valves. Thesevalves activate the PrecisionMix functions whichinclude catalyst, resin, air purge, and solvent purge.

Installing the SystemThe typical installation shown in Fig 1 is only a guidefor selecting and installing the system. The particulartype and size system for your application must be cus-tom designed for your needs. For assistance indesigning a system, contact your Graco representa-tive.

WARNINGInstalling, troubleshooting, and servicing this equip-ment requires access to parts which may causeelectric shock or other serious bodily injury if workis not performed properly. Do not install or serv -ice this equipment unless you are trained andqualified. All wiring and electrical trouble -shooting must be done by a qualified electri-cian.

Check and follow all local safety and fire codes,NFPA 33, NEC 504 and 516, and OSHA standard1910.107.

If the solenoid enclosure is used in a hazardousarea, be sure your installation complies withNational, State and Local codes for the installationof electrical apparatus in a Class �, Group D, Divi-sion 1 Hazardous Location.

Mount the Solenoid EnclosureMount the solenoid enclosure within 6 ft (1.83 m) of thePrecisionMix dispense valves to reduce solenoid re-sponse delays. Longer tube lengths will cause ratiotolerance problems.

Ground the Solenoid EnclosureConnect a 12 gauge grounding wire (part no. 222–011)from the solenoid enclosure mounting surface to a trueearth ground. See Fig 2. See Accessories to orderthe ground wire.

Check the Solenoid Enclosure ElectricalGrounding

WARNINGProper electrical grounding of your system isessential. For your safety, read the warningsection, Fire, Explosion, Or Electric Shock Haz -ard , on page 2.

Have a qualified electrician check the electricalgrounding continuity between the purge air outlet fitting(A) and a true earth ground (D) as shown in Fig 2. Ifthe resistance is greater than 25 ohms, check ground-ing connections and the grounding wire (B) for dam-age. Reconnect or replace the grounding wire. Do notoperate the system until the problem is corrected.

Fig 2 1902

KEYA Purge Air Outlet FittingB Ground Wire to Mounting SurfaceC Grounded Mounting SurfaceD True Earth GroundE Digital Voltage Meter

A

BC

DE

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Wiring and Cable ConnectionsWARNING

To reduce the risk of fire, explosion, or electricshock, all electrical equipment must only beinstalled by a qualified electrician.

For your safety, be sure to read and understandthe Non-Hazardous Location W iring W arnings ,on page 2, and follow the instructions there.

Connect the Intrinsically Safe Low Voltage Cable to theSolenoid Enclosure’s 14-pin connector (F). See Fig 3.See Accessories to order the cable.

Fig 3 ����

F

CAUTIONThe solenoids are polarized. They will not functionproperly if they are not connected properly. See Fig4 for proper connection.

Hazardous (classified) Location Wiring of Intrinsically Safe Circuits

If this solenoid enclosure is being used in a haz-ardous location a barrier module must be used.Contact Graco application engineering for the properbarrier module and cable assemblies.

WARNINGThe transmitting of flammable atmosphere fromone area to another through a multi-conductorcable can cause fire or explosion and result inserious injury and property damage. Follow theinstructions below and refer also to NEC Article504 and 4.3 of ANSI standards ISA-RP12.6-1987.

In installations where intrinsically safe circuits are con-tained in a multi-conductor cable capable of transmit-ting flammable mixtures through the cable core, thecable core must be either sealed or vented. See theAccessories section to order Graco Cable Seal, partno. 110–458.

The purpose of such sealing or venting is to preventthe cable from transmitting the flammable atmospherefrom one area of a hazardous location to another orfrom a hazardous location to a non-hazardous locationat a rate of more than 198 cm3 of air per hour (h) at apressure of 1493 Pa (0.007 ft3/h of air at a pressure of6 in. of water), with both ends of the cable at atmo-spheric pressure.

Fig 4

Electrical Schematic

Cable Connector Plug Side V iew

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Air Line Connections1. Connect the main air line to the solenoid enclosure

fitting labeled AA IN, using 1/2 in. (12.7 mm) O.D.tubing. See Figs 5 and 6.

2. Using 1/8 in. (3.2 mm) O.D. tubing, connect theresin [R], solvent purge [S], air purge [A], and cat-alyst [C] on and off air line between the solenoidenclosure and the corresponding valve. See Figs5, 6, and 7.

3. Connect 1/4 in. (6.35 mm) O.D. air line tubingbetween the P-AIR connector and the air purgeinlet of the air purge valve.

4. If your system has a dump valve, connect 5/32 in.(4.0 mm) O.D. air line tubing between the dumpvalve air signal and dump valve.

5. Connect 1/2 in. (12.7 mm) O.D. tubing betweenthe AA-OUT connector and the gun’s atomizing airline.

Fig 5�����

Dump ValveOption

Atomizing Air to Gun

PrecisionMix Air Purge

Main Air Supply Inlet

Catalyst [C], Resin[R], Solvent Purge[S], and Air Purge [A] Air Connectors

Fig 6������

Catalyst [C]

Solenoid EnclosurePneumatic Diagram

ONOFF

Air Purge [A]

ONOFF

Resin [R]

ONOFF

Solvent Purge [S]

ONOFF

Dump Valve Option

ON

Air Flow Switch

Main Air In

S

Spare Solenoid Port

Atomizing Air to Gun

Air Purge Valve Supply

02469

� 2 3 4 5 6

Catalyst [C]

Resin [R]

Solvent Purge [S]

Air Flow Switch

SpareDump

Air Purge [A]

Main Air In

Air Purge Valve Supply

Atomizing Air to Gun

Top View of Solenoids

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Air Line Connections

R1

R2

A1

A2

KEYA1 Air Purge OFF Air Pilot LineA2 Air Purge ON Air Pilot LineC1 Catalyst OFF Air Pilot Line

C2 Catalyst ON Air Pilot LineR1 Resin OFF Air Pilot LineR2 Resin ON Air Pilot Line

S1 Solvent Purge OFF Air Pilot LineS2 Solvent Purge ON Air Pilot LineY Grounding Clamp and Wire

C1

C2

S1S2

01910

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DISPENSE VALVE PURGE VALVE

OFF

ON

OFF

ON

R1 or C1

R2 or C2

A2 or S2

A1 or S1

Fig 7

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OperationOperating ChecklistCheck the following list daily, before starting to oper-ate the system, to help ensure you of safe, efficientoperation.

1. Be sure all operators are properly trained andqualified to safely operate your system.

2. Be sure all operators are trained how to prop-erly and completely relieve system pressure.

3. Be sure the system is thoroughly grounded.See FIRE, EXPLOSION, OR ELECTRICSHOCK HAZARD , page 2, and Check Sole -noid Enclosure Electrical Grounding , page5.

4. Be sure the operator and all persons enteringthe installation site are properly grounded bywearing shoes with conductive soles or per-sonal grounding straps.

5. Be sure all conductive objects in the sprayarea, including the workpieces, are electricallygrounded and the floor of the spray area iselectrically conductive and grounded.

6. Be sure all flammable liquids in the spray boothare in approved grounded containers.

Set the Air Supply PressuresSet the air inlet pressure at 60 (minimum) to 80 psi(4.2 to 6 bar) to ensure proper actuation of all airvalves and dispense and purge valve functions. Mostapplications require around 80 psi (6 bar) air pressure.

CAUTIONDo not exceed 100 psi (7 bar) Maximum Air InletPressure to the solenoid enclosure. Air pressuregreater than 100 psi (7 bar) will cause solenoid fail-ure.

NOTES:

� The air supply must be filtered to 10 micron or bet-ter or the air solenoids will clog frequently.

� To avoid contaminating your paint products, be surethe air supply is free of oil and water.

Air Flow Switch AdjustmentNOTE: See Accessories to order a Low Flow AirSwitch Kit to use with guns that operate at air flowsless than 8 scfm.

MIN, on the air flow switch (G), is the setting for theminimum amount of air flow for electric switch actua-tion. MAX is the setting for the maximum amount of airflow for electric switch actuation. Refer to Fig 8.

NOTE: Since the air flow switch can be turned 360degrees, the slot on the air flow switch must pointdirectly at MIN to obtain the highest switch sensitivityand must point directly at MAX to obtain the lowestswitch sensitivity.

Fig 8

G

01906

Operating the SystemSee the PrecisionMix Controller manual 308–192 andthe Manifold manual 308–288 for detailed operatinginstructions.

Electrical FailureIf there is an electrical failure, push the solenoid manu-al button (H) on the solvent purge valve while trigger-ing the gun to reset the system. See Fig 9.

Fig 9

H

01906

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TroubleshootingThe troubleshooting chart below will help you locateand solve a problem with the solenoid enclosure. Forother types of problems with the PrecisionMix system,refer to the manuals listed below.

Manual No. Product Description

308–192 PrecisionMix Proportioning Controller Model 224–939

308–243 Precision Pulse Flow MeterModels PPM 3050, 3100, 3550,3050H, 3100H, and 3550H

308–287 PRO Pulse Electronic Flow MeterModels 235–402 and 235–403

308–288 PrecisionMix ManifoldModel 223–859

WARNINGTo reduce the risk of serious injury, including elec-tric shock and splashing fluid in the eyes or on theskin, always relieve all air pressure to the solenoidenclosure before servicing it.

WARNINGInstalling, troubleshooting, and servicing this equip-ment requires access to parts that may cause elec-tric shock or other serious injury if the work is notperformed properly. Do not install, troubleshoot, orservice this equipment unless you are trained andqualified. All wiring and electrical troubleshootingmust be done by a qualified electrician.

To avoid electrical shock, disconnect the powersource before servicing the solenoid enclosure.

CAUTIONTo avoid contaminating, losing, or damaging parts,always remove the equipment from the worksite forservice or repair. The service or repair area mustbe kept clean.

PROBLEM CHECK CAUSE SOLUTION

Catalyst, Resin, Solvent,and/or Purge Air Valve(s)are not turning on or offcorrectly.

Visually inspect air andelectrical lines for kinks,abrasions, severed lines,or loose connections. TheI/O board LED and thecorresponding solenoidLED should come onwhen the solenoid is actu-ated (refer to Fig 10).

Air or electrical lines dam-aged or connections areloose.

Correct the air or electricalline problem.

Check the voltage level tothe solenoid. Pull the sole-noid connector and checkthe voltage between thepins (refer to Fig 11). If thevoltage is correct, the so-lenoid is damaged. If thereis no voltage, check thecable connections.

Damaged solenoid orcable is damaged or notproperly connected.

Replace the solenoid orcorrect the electrical lineproblem.

Fig 10

LED

����Fig 11

Connector Pins

01905

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Troubleshooting

PROBLEM CHECK CAUSE SOLUTION

Catalyst, Resin, Solvent,and/or Purge Air Valve(s)are not turning on or offcorrectly.–Continued–

Visually inspect air regula-tor gauges for properpressure setting.

Air regulator pressure settoo high or too low.

Adjust the air regulator.60 psi (4.2 bar) is the mini-mum setting, 80 psi (6 bar) is commonly used.Do not exceed 100 psi (7 bar).

Remove the air hose fromthe solenoid enclosure ou-put for the non-functioningvalve. Air should be com-ing out the solenoid enclo-sure fitting when that valveis actuated.

Solenoid failed to shift. Make sure there is suffic-ent air being supplied tothe solenoid enclosure.

Check that air pressure tosolenoids does not exceed100 psi (7 bar).

Solenoid is clogged; besure to filter the air supplywith a 10 micron filter.

Solenoid is damaged;replace it.

System shuts down. Check the air flow switchadjustment.

Air flow switch not properlyset.

Adjust air flow switch.

Check the air flow switchadjustment: Trigger thegun; the I/O board LED #6should come on and theshut off when the trigger isreleased.

Air flow switch not properlyset.

If the I/O #6 LED does notcome on, turn the air flowswitch towards MIN settinguntil the LED turns onwhen the gun is triggered.If the LED stays on afterthe trigger is released, turnthe switch towards MAXuntil the LED turns offwhen the trigger isreleased.

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Parts

01904ASSEMBLED VIEW

�����

193

4

20

5

89

7

6

See the Manifold Assemblydrawing on page 13

12

24. 25

22, 23

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PartsWARNING

When servicing, use only genuine Graco replace-ment parts. Use of other parts or any alteration ormodification of this equipment could cause it tomalfunction, which could result in serious injury,fire, explosion, or property damage.

Part No. 948–819, Series ASolenoid Enclosure

Ref.No. Part No. Description Qty.

1 597–151 ELBOW; 1/8 npt(m) x 1/4” O.D. tube 1

2 111–200 FITTING, male 93 513–820 REDUCER; 1/2” x 1/4” O.D. tube 24 599–248 TUBE TEE; 1/2” O.D. tube x

1/2” O.D. tube x 1/2 npt(m) 25 598–529 BULKHEAD, union; 1/2” O.D. tube 26 513–818 BULKHEAD; 1/8” x 1/8” O.D. tube 87 513–052 FLOW SWITCH, piston type 18 513–914 REDUCER 1/8” x 5/32” O.D. tube 1

Ref.No. Part No. Description Qty.

9 598–251 BULKHEAD; 5/32” O.D. tube 110 108–666 MANIFOLD, 6 station 112 513–884 SOCKET, 14-pin 113 111–160 PLATE, blanking 114 111–165 FITTING, male, 1/4” O.D. tube 315 108–667 GASKET, solenoid 216** 111–172 VALVE, spool, solenoid 517 108–668 SCREW, mach, sltd

M3 x 0.5 x 40 1018 100–699 SCREW, mach, pnh; 4-40 x 1” 219** 590–332 TUBE, polyethylene; 1/4” O.D. *20** 590–570 TUBE, polyethylene; 1/2” O.D. *21** 513–063 TUBE, nylon; 1/8” O.D. *22 105–834 HOUSING, connector 123 105–837 SOCKET 224 513–829 CAP, connector 125 513–830 CONTACT, pin 2

* Order tube length needed.

** Keep these spare parts on hand to reduce down time.

MANIFOLD ASSEMBLY �����

171 16

15

13

18

214

21

10

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Dimensions

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Technical DataMaximum Air Inlet Pressure 100 psi (7 bar). . . . . . . . . .

Minimum Air Inlet Pressure 60–80 psi (4.2–6 bar). . . . (dependant on system variations)

Maximum Input Voltage +24 VDC (+10% –15%). . . . . .

Power Usage 0.5 watts. . . . . . . . . . . . . . . . . . . . . . . . . . .

Solenoid Specification for Intrinsically Safe Installation

Intrinsically Safe Apparatus for Class �� Division 1,Group C and D Hazardous Location when installedwith the correct barrier module. Contact GracoApplication Engineering for the proper barrier.

Entity Parameters

Vmax 30 VDCImax 200 mACi � 0 �FLi � 0 mH

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AccessoriesUse Only Genuine Graco Parts and Accessories

Air Filter 727–476

250 psi (17.5 bar) MAXIMUM WORKING PRESSUREFor cleaning the air supply to the solenoids. 10 micron element, 1/2 npt(f) inlet and outlet.

24 VDC Solenoid Enclosure Cable

For connecting solenoid enclosure to the PrecisionMixcontroller. Copper, multi-strand conductors. Assemblyincludes connector and strain relief.

PART NO. LENGTH948–910 6 ft (1.8 m)948–911 15 ft (5 m)948–912 25 ft (8 m)948–913 36 ft (11 m)948–914 50 ft (15 m)948–915 75 ft (23 m)948–916 100 ft (23 m)948–917 125 ft (30.5 m)948–918 150 ft (30.5 m)948–919 200 ft (30.5 m)

Intrinsically Safe Low V oltage Cable

Contact your Graco representative to order.

Cable Seal 110–458

For intrinsically safe electrical cable. Provides a sealedpassageway for the cable from the Hazardous to theNon-Hazardous Locations.

Grounding Clamp and W ire 222–011

12 ga, 25 ft (7.6 m) wire

0189

Low Flow Air Switch Kit 948–978

For use with guns that operate at air flows less than8 scfm.

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The Graco Warranty and DisclaimersWARRANTY

Graco warrants all equipment manufactured by it and bearing its name to be free from defects in material and workmanship onthe date of sale by an authorized Graco distributor to the original purchaser for use. As purchaser’s sole remedy for breach of thiswarranty, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment proven defec-tive. This warranty applies only when the equipment is installed, operated and maintained in accordance with Graco’s written rec-ommendations.

This warranty does not cover, and Graco shall not be liable for, any malfunction, damage or wear caused by faulty installation,misapplication, abrasion, corrosion, inadequate or improper maintenance, negligence, accident, tampering, or substitution ofnon–Graco component parts. Nor shall Graco be liable for malfunction, damage or wear caused by the incompatibility with Gracoequipment of structures, accessories, equipment or materials not supplied by Graco, or the improper design, manufacture, instal-lation, operation or maintenance of structures, accessories, equipment or materials not supplied by Graco.

This warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an authorized Graco distributorfor verification of the claim. If the claimed defect is verified, Graco will repair or replace free of charge any defective parts. Theequipment will be returned to the original purchaser transportation prepaid. If inspection of the equipment does not disclose anydefect in material or workmanship, repairs will be made at a reasonable charge, which charges may include the costs of parts,labor and transportation.

DISCLAIMERS AND LIMITATIONS

The terms of this warranty constitute purchaser’s sole and exclusive remedy and are in lieu of any other warranties (express orimplied), including warranty of merchantability or warranty of fitness for a particular purpose , and of any non–contractualliabilities, including product liabilities, based on negligence or strict liability. Every form of liability for direct, special or consequen-tial damages or loss is expressly excluded and denied. In no case shall Graco’s liability exceed the amount of the purchase price.Any action for breach of warranty must be brought within two (2) years of the date of sale.

EQUIPMENT NOT COVERED BY GRACO WARRANTY

Graco makes no warranty, and disclaims all implied warranties of merchantability and fitness for a particular purpose , withrespect to accessories, equipment, materials, or components sold but not manufactured by Graco. These items sold, but notmanufactured by Graco (such as electric motor, switches, hose, etc.) are subject to the warranty, if any, of their manufacturer.Graco will provide purchaser with reasonable assistance in making any claim for breach of these warranties.

Graco Phone NumbersTo place a PrecisionMix equipment order, contact your Graco distributor or call Graco, Chicago.

For PrecisionMix technical assistance, call Graco, Chicago.Phone No. 708–678–7200

Sales Offices: Atlanta, Chicago, Dallas, Detroit, Los Angeles, Mt. Arlington (N.J.)Foreign Offices: Canada; England; Korea; Switzerland; France; Germany; Hong Kong; Japan

GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441PRINTED IN U.S.A. 308–297 9/93