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    HIPOTnOiltq$THE MEASURE OF A LEADEBUSER"S GUIDE

    MODIXT 860 PL

    PARTW DS111-016

    DAITGEft

    HIGH VOLTAGtr

    WARNING This publication describes a poftrct engineered and designed tonrcasure or operate wift HIGII VOUIAGES. Accodi*gly, nraximumsafeguards have been built into fte equipnrent and the best satety techniquespossible ale described in the rmit's opelating inshuctions. These insfouctionscaution the mer to exelcise great care when using certain contols at alpropriatepoinb in fte opelating procedtres. In addition to following frrese writtenwamings, tre opentor of this equipnrent is stongly advised to rmintain safetyconsciorsness. The following nrles arc pardiculady rclevant and must befollowed at all tirnes.

    BEFORE CONNECIING INPUT PO\A/E& GROUND TFIE CASE.

    BEF'ORE UN.GROLINDING TI{E CASE, DISCONNECT POTVER

    NEVER APPROACFI OR TOUCFI A POTENTTALLY LWE HIGH VOLTAGECIRCUIT WITHOUT SOLIDLY CONNECTING ANI APPROPRIATEGROUND CONDUCTOR FIRST.

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    Table of Contents

    Recalibratingthe Voltmeter. ........15Diagnosing Problems.. ...;.....---17

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    About the lJser's Guide

    This user's guide describes the HIPOTRONICS 800PL Series of portable dc insulationtest sets. It is intended to provide a simplified reference for users of this equipment,

    allowing the quick, safe, and efficient use of the unit's features.

    Instructions for the following models and their associated part numbers are included inthis user's guide:

    815 PL 860 PL 880 PL 8120-5 PL 8170-5 PLDS 1 1 1-008 DS111-016 DS 1 1 1-007 DSl11-021 DSl11-011

    Before You Begin

    It is assumed that the user has a basic understanding of electrical equipment and the majorfunctions to be performed by the specific unit discussed in this manual.

    Argantzation of this User's Guide

    This user's guide is divided into four major sections, including:

    . General Information, which discusses the features and specifications of theHIPOTRONICS 800PL series and provides a description of the functions performedby each of the controls and indicators on the front panel.

    . Setting Up the Equipment, which provides instructions for preparing the unit for testoperations.

    . Operating the Equipment, which provides instructions for performing test opera-tions.

    . Performing Special Operations, which provides procedures for recalibrating the unitand diagnosing common problems.

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    General Information

    This section acquaints the user with the major f,eatures and specifications of theHIPOTRONICS 800PL series of portable dc insulation testers and the functions

    performed by each of the controlsand indicators on the front panel.

    Features and Specifications

    The HIPOTRONICS 800PL series of portable dc insulation testers consists of equipmentparticularly suited for use in the utility and wire and cable industries. These units areused to test insulated cables, capacitors, and other one-sided, grounded samples.

    Models 815PL, 860PL, and 8B0PL operate from an input of 120 volts ac, 50/60 Hz,5amps. Models 8120-5PL and 8170-5PL operate from an input of 120 volts ac,50160 Hz,

    10 amps.

    Models 815PL, 860PL, and 880PL are housed in a Formica cabinet containing an oil-fi|led, hermetically sealed steel container. The storage section at the rear of the cabinetcontains two insulated return leads, an auxiliary power plug, a three-pronged input powercord, and a shielded HV output cable with a battery clamp.

    Models 8120-5PL and 8i70-5PL contain an oil-filled, air-sealed steel tank. The controlsection houses two insulated return leads, an auxiliary power plug, and a three-prongedinput power cord.

    Standard features of the 800PL series of portable dc insulation testers include:

    . Triple range kV meter

    . Four range current meter

    . Adjustable voltage control

    . "Zeto start" interlock

    . Insulated refurn and guard circuits

    . FfV shorting solenoid with a discharging resistor

    . Provision for an external interlock or "deadman" switch. Input and backup overload fuses

    . Pilot light indicators for ac input and high voltage output.

    . Rated

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    ou$o

    RIX1 i : ; l.

    }I:.:.:.:.:

    :iilDIGIIT i:i.:''::'.,:'SEEi'i:::i.:::i:i::::i.r::::::i;

    815PL 0-15 kvNegativePolarity

    1.3 yo

    @SAHz15 % 44 lbs

    (20 ke)ll3/o" H (298 mm)163/o" W (425 mm)IztA" D (3 18 mm)

    86OPL 0-60 kvNegativePolarity

    1.6 aA

    @s}Hz15 % 57 lbs

    (26 kg)IL3/4" H (298 mm)163/4" W (425 mm)lzLA" D (3 18 mm)

    88OPL 0-80 kvNegativePolarity

    2.5 0

    @s}Hzrs% Tllbs

    (32.3 kg)lL3/4" H (298 mm)163/o" W (425 mm)12Y2" D (3 18 mm)

    8120-5PL(Controls)

    27 lbs(r2.3 ke)

    12" H (305 mm)163/4" W (425 mm)123/s" D (3 14 mm)

    8120-5PL(Tank)

    0-120 kvNegativePolarity

    2.5 Yo

    @SAHlz

    15 % 84 lbs(3 8 ke)

    22" H (559 mm)12" W (305 mm)10" D (229 mm)

    8170-sPL(Controls)

    21 lbs(12.3 ks)

    12" H (305 mm)163/o" W (425 mm)123/8" D (3 14 mm)

    B 170-5PL(Tank)

    0-170 kvNegativePolarity

    r.6 %@s0 Hz

    T5% 140 lbs(64 ke)

    30" H (762 mm)12" W (305 mm)9" D (229 mm)

    Figure I Portable B00PL Series Specifications

    All 800 PL Series units are rated for 15 minute duty at 5 milliamperes.

    Environment

    Storage Temperature: -10o to 45o C

    Operating Temperature: 10o to 40'C

    Humidity: Less than 95 percent non-condensing

    Altitude: Less than 1000 meters

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    Controls and Indicators

    A diagram of the front panel for the HIPOTRONICS 800PL Series is displayed in Figure2. Refer to this diagram, as well as to the actual front panel, when reading the descriptionof the contols and indicatorc. Note that thefront panel displayed in Figure 2 may dffirslightly from that of the model purehased

    OUTPUT VOLTAGE

    e

    VOLTAGE RANGEMED I

    LOWI *HGH I

    INTLK &AUX POWER

    OI.JIPUT CURRENT

    GUARD O

    30sll

    20@It

    l0@

    60t&I

    tg 70Is80t

    fqotACPOWER- HIGH VOLTAGE

    ON

    &DC INSULAIION TESTER MODEL BOOPL SERIES

    Voltmeter and Range Selector

    The kilovoltmeter is located at the top left of the front panel and is labeled DC kV on the

    scale. Directly below the meter is a triple-range selector switch, with each rangecorresponding to a different set of numbers on the scale. The LOW range corresponds tothe bottom row of numbers, the MED range to the middle row, and the HIGH range tothe top row. The voltmeter indicator should be at 0 when then unit is OFF. Minoradjustments may be made via the adjusting screw below the meter window. To makethese adjustments, the high voltage must be OFF.

    FI

    ffisafffi*

    ffij/

    s,*ON

    ffi

    OFF@i\fi{ \1\r

    ji\GF'l

    ...or-$1t\tr\rr\tt

    tttlilt' rlt rr'rl'''',, 3

    RETURN O ffi*fuf 1it$Fiifil-E+.1fi'ifloil

    I I lLlt:Itr::f::::::: -::t-a-lr;:{i:::l:t;:l:i:::tI I \iiiga,;li#tg+,iI I Xlili*;-"-'ti'szcRouND o

    -

    RAISE VOLTAGE50

    lo*.s

    ,roolsSTAI?T

    ,irl.rnrr*r

    r\r r t t t \ t t t t tl t t t t t l t il / / /// E

    Figure 2 DC Insulation Tester Front Panel

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    Current Meter and Range Selector

    The current meter is located at the top right of the front panel and is labeled DC pA onthe scale. Directly below the meter is a four-range selector switch. To obtain proper dcreadings, muttiply the scale reading by the factor at which the range selector ispositioned. The factors associated with the various range settings are as follows:

    Setting Value Setting Value

    xl 1x10 10

    For example, when performitng a dc insulation test, thethe dc pA scale and the CURRENT RANGE setting is1000, or 4,000 pA.

    The current meter indicator should be at 0 whenmay be made via the adjusting screw belowadjustments, the high voltage must be OF'F.

    AC Power Controls

    current meter indication is 4 onXlK. The colrect reading is 4 x

    then unit is OFF. Minor adjustmentsthe meter window. To make these

    xl00XlK

    1001,000

    The AC POWER section contains an ON/OFF toggle switch, a pilot light to indicatethat AC power is on, and a current limiting fuse. The current limiting fuse protects theunit and may be removed for replacement by pressing the black cap down while turning itcounterclockwise,

    Guard/GroundlReturn Connections

    There are tlree connection posts on the front panel labeled GUARD, GROUND, anoRTN. GUARD or RTN must always be connected to GROIJND by a jumper whentesting. Figures 3 and 4 illustrate these connections'

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    Jumper Link Connected Between GROIIND and GUARD Posts

    The sole function of this mode of operation is to separate the paths of leakage currents.These leakage currents are leakage to ground and leakage across the test specimen. Theleakage currents to GROUND are bypassed around the current meter, measuring only thespecimen leakage current. The low side (RETURN) connection of the specimen must be"floated" (isolated from GROTIND).

    This is typically used for discrete components or when leakage to GROIJND is to bedisregarded. For example, when testing a transformer for leakage (or resistance) betweenthe secondary and the primary, the guarded retum mode allows leakage to the core orframe to bypass the meter, thus reading only leakage between the two coils.

    It is not possible to test installed cables in this mode of operation, as the cable shields arealways grounded, making it impossible to see the leakage cunent.

    OUTPUT

    RETURNLEAD

    RETURN

    GROUNDJUMPER LINK CONNECTED BETWEEN

    GUARD AND GROU'VD POSTWhen GUARD and GROUND posfs areconnected, all GROUND leakage cunents are

    bypassed around the current meter and onlyspecimen load cunent being retumed on theRETURN posf will be monitored. Ihis mode ofoperation is used only when extremely sensitiveme asu remenfs are desi red.

    METERGUARD

    Figure 3 Jumper Link Connected Between Ground and Guard Post

    H.VPOWERSUPPLY

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    OUTPUT

    RETURNLEAD

    RETURN

    GROUNDJUMPER LINK CONNECTED BETWEEN

    GROUND AND RETUR,V POSTWhen GROUND and RETURN posfs are connected,all current ,s presented to the current meter. Thismode of operation should be used only whenextremely sensitive measuremenfs are unnecessa4f orvvhen a fesf specimen must be grounded. Nofe that noconnection is made to the GUARD posf in this mode.

    METERGUARD

    High Voltage Controls

    The HIGH VOLTAGE controls consist of ON and OFF pushbuttons, a lightedindicator, and a RAISE VOLTAGE control. High voltage can be energized by tur;ringthe RAISE VOLTAGE control to zero (zero start interlock) and pressing the IMNpushbutton. The indicator lights when the high voltage is on. If the IMFF pushbuttonis pressed or if the test is terminated by another means, for example, if an overload circuittrips, the indicator light goes out and the high voltage is de-energized.

    The RAISE VOLTAGE controlregulates output voltage. The markings on the control

    . knob indicate the pereent of output. Keep the RAISE VOLTAGE control set to zerowhen not in use, and set the control to zero immediately upon completion of a test.

    Interlock and Auxiliary Power Socket

    The INTLK AND AUX POWER socket provides for an external interlock or "deadman"switch, which must be connected to the interlock and the auxiliary power plug provided

    with the unit. Whether or not this feature is used, the power plug must be plugged intothe socket in order for the unit to operate.

    GROUNDED

    Figure 4 Jumper Link Connected Between Ground and Return Post

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    I{VFuse

    The IfV FUSE is located beneath the INTLK AND AUX POWER socket and functionsas a backup overload fuse. For models 815PL, 860PL, 880PL and 8120-5PL, this is a 5amp fuse. For Model 8170-5PL, this is a 10 amp fuse. This fuse is accessed in the samemanner as the AC POWER fuse described in this section, and serves both as currentsurge protection and the overload tripping facility for the unit.

    8

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    Setting tlp the Equipment

    1. Select a location for the unit that places the meters at a level to allow maximumaccuracy when reading.

    2. Set the RAISE VOLTAGE control to zero and check to ensure that the AC POWERswitch is oFF.

    Ground the unit before connecting tnpat power. The GROIIND post on the frontpanel may be used for this purpose. Connect the jumper link between the GROUNDand RETURN posts for most cable tests.

    Insert the S-pronged shorting plug provided with the unit into the INTLK AND AIIXPOWER socket on the front panel. (This plug may also be used as a connector to the

    extemal interlockor capacitor discharge unit. See the schematic for pin connections.)

    Connect the insulated return leads supplied with the unit as illustrated in Figures 3and 4.

    6. For Models 8120-5PL and 8170-5PL, connect a25-foot interconnect lead between theHV tank and the controls. Ensure that the HV tank is grounded to a reliableground

    3.

    4.

    5,

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    Op.t"tttg tn. nqtlpment

    This section provides step-by-step instructions for performing dc insulation testing ofone-side grounded and ungrounded samples. In addition, it provides a section with

    instructions fortesting high voltage cable, and a section containing special safety

    instructions.

    Before beginning any test procedures, ensure that the equipment has been properlyinstalled according to the steps in the section of this user's guide titled Selting Up theEquipment.

    Set the CURRENT RANGE control to the XlK range setting.

    Set the VOLTAGE RANGE control to the desired setting for voltmeter reading.

    Connect the HV output lead to the test sarnple.

    Plug the line cord of the unit into a 120 volt, 50/60 Hz outlet. If a 2-prong adapter isused, De sure to ground the third wire.

    Turn the AC POWER toggle switch ON. Ensure that the test area is cleur of allpersonnel not directly involved with testing procedures,

    1.

    2.

    FlJ.

    4.

    5.

    6"

    7.

    Press the HIGH VOLTAGE ON pushbutton. The indicator will light.

    Increase the output voltage to the desired level with the RAISE VOLTAGE control.Note that the current meter readings increase along with the voltage.

    Maintain the output voltage at the desired level for the required amount of test time.Reduce the CURRENT RANGE until the needle deflects 10 percent or more for themost accurate leakage reading. Steady voltage must be maintained in order to readleakage rather than charging current.

    When the test is complete, slowly lower the RAISE VOLTAGE control to zero.When the voltmeter reading is zero, press the HIGH VOLTAGE OFF pushbutton.

    Ensure that the CURRENT RANGE control is positioned at the highest range (X1K)when reducing voltage to prolong the life of the meter.

    If the test sample fails, the overload circuit trips HIGH VOLTAGE OFF and theinternal shorting soienoid will bleed offthe remaining charge in the sample.

    B.

    9.

    10.

    10

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    Testing High Voltage Cables

    Ensure that ail insulators, pot heads, and stress cones are clean and free of dust ormoisture.

    1.

    2. Ensure that the shields of all three cables are grounded andend of the cable.

    3. Isolate the far end of the cable conductors under test fromground points. They must also be free of all other potentialas sharp points.

    tied together at the near

    each other and from allsources of leakv3e, such

    4.

    5.

    6.

    When testing each of three conductors separately, two must be grounded to protectagainst dangerous charge build up, as must other de-energized cables in the test area.

    Increase voltage slowly, following the test specifications outlined by the cablemanufacturer or any other relevant standards. Charging current depends on the rate ofrise of the voltage.

    In an average test of a 3-conductor, 3-phase circuit, the current meter readings shouldbe approximately the same on all three conductors. Higher than expected readings orflashover are indicative of a faulty cable, a poor splice, a dirty pot head or insulator,or cable end leakage.

    7. Upon completion of the test, foliow the Turn OffProcedure onPage 14.

    1l

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    Iufigthffi:iifieg|iluf:mU:i:cab1e:iffiefiii.esti:::::.Re :::bffijial$oirbeiatreeled::|b'yi|affii::*effii

    INNER INSULATION

    TAPE ENDS ON CONDUCTOR ONLY,AI{DFAN OUT APPROX, 2 FT, FROMEACH OTHER AND TO GROUND POINT,

    GND=--

    :GNDNOTE: GROUNDED RETURN CN HV TESTSET WLL READ ALL CHARGING ANDLEAKAGE CURI?ENI WHEN USINGGUARD POSI THIS WILL BYPASS ALLCURRENT TO METER.

    CABLES

    CCLIP

    Y'/

    TEST

    END

    Figure 5 Test Example

    SHTELD (TYP)

    AT STRESS CONES

    t2

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    CABLE TEST RECORD

    ixA{,t+

    trrJ.-xnt

    LAxtf;

    1234TIME IN MINUTES

    DATE I TESTER

    .l000V/sec.

    rise50 uo

    .l00uo

    150 uo

    I00 uo

    150 uo

    100 uo

    1432l0

    CABLE IDENT.

    13

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    Special Safety Instructions

    Follow these safety procedures upon completion of testing.

    Turn Off Procedure

    llarning Never press theIJIG}f, VOLTAGE OFF pushbutton or turn off the mainpower switch immediately upon completion of a high voltuge test. I{hen stored energ)is greater than I kilojoule, allow the energt to bleed down until the voltmeter reading iszero,

    1 slowiy turn the RAISE VOLTAGE control to zero. Ensure that CURRENTRANGE is set to X1K.

    2. Allow the charged cable to bleed down to approximately a 10 kV on the voltrneter orproceed to Step 3.

    3. Completely discharge the cable through a resistive grounding (shorting) stick.

    4. Attach a solid ground connection before touohing the sample.

    Completing Tests of Large Capacitive Loads

    When cornpleting a dc insulation test of large capacitive loads, the following steps arerecommended for the protection of both the user and the equipment.

    1. Secure a tested, hand-held, resistive grounding (shorting) stick.

    2. Using the hand-held grounding stick, bleed down the charged cable or othercapacitive load. This eliminates the unnecessary discharge of a high capacitive cableback into the high voltage section of the 800PL unit when the HIGH VOLTAGEOFF pushbutton is Pressed.

    3. Place a solid earth connection before touching the sample.

    T4

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    tt.f"ryng Sp".t"lThe first part of this section describes the step-by-step procedures required to performmeter recalibration. The second part of this section provides suggestions for problem di-agnosis and maintenance of the equipment.

    Meter Recalibration

    HIPOTRONICS meters have been calibrated with standards traceable to national stan-dards maintained by the National Institute of Standards and Technology (I{IST) in Wash-ington, DC and are certified accurate to within 2 percent when shipped. Perform meterrecalibration as often as necessary to meet the requirements of each particular installation,as dictated by use and by standards for accuracy. Three factors influence the frequency ofmeter calibration: the amount of physical handling, time lapse, ffid extent of usage.Intervals between meter recalibration can vary from one month to one year.

    The voltmeter potentiometer is accessed through the front panel. The current meter isfactory calibrated and need not be adjusted.

    Recalibrating the Voltmeter

    1. Ensgre that the voltmeter is set to zero. Adjust the zero setting screw if necessary.

    2. Select a location for the unit that places the voltmeter at a level to allow maximumaccuracy for calibration.

    3. Set the RAISE VOLTAGE control to zero and check to ensure that theAC POWERtoggle switch is OFF.

    4. Groand the case before connecting the input power. The GROI"IND post on thefront panel may be used for this pulpose.

    5. Ensure that the 5-pronged shorting plug provided with the unit is plugged into theINTLK AND AUX POWER socket on the front panel

    6. Set VOLTAGE RAI\GE to LOW.7. Connect the RETURN post to the GROUND post on the front panel with the jumper

    link.

    8. Select a calibrated extemal voltmeter with a meter range appropriate for the unit to becalibrated (HIPOTRONICS'Model KVM 100 or similar).

    15

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    9. Connect the low side (ground) of the external voltmeter to the RETIJRN post of thefront panel using the insulated return lead supplied with the unit.

    10. Connect the output of the unit to the high side of the external voltmeter using theshielded high voltago lead supplied with the unit.

    11. Unscrew the front panel from the cabinet, tipping the panel vertically and locating thekV calibration potentiometer (pot) in the corner of the circuit board attached to theback of the voltmeter.

    12. Secure the front panel in a vertical position, allowing ease of access to the kVcalibration potentiometer and accurate meter readings.

    13. Turn VOLTAGE RANGEto LOW and energize the high voltage. Raise the voltageto approximately 70 percent of the full scale on the unit's kilovoltmeter. Note thatcalibrating the LOW range automatically calibrates the MED and HIGH ranges, butit is recommended that each range be checked individually.

    14. Calibrate the unifs meter with the external meter using the calibration potentiometer(2 percent accuracy is recommended).

    15. Return the RAISE VOLTAGE control to zero and turn the high voltage OFF.

    16

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    Diagnosing Problem

    All products shipped by HIPOTRONICS are thoroughly tested against a rigid set of stan-dards by the firm's Quality Control Department. If a unit does not function properlyupon delivery, refer to the section trtled Returned Materiai at the end of the user's guide.

    This section is intended to help the user locate the source of a problem when the unit isnot functioning or is functioning improperly. The procedures described should be per-formed by a trained repair technician and are not reeommended for individuals trainedonly to operate the equipment. It is not recommended that repairs be performed while theequipment is under Warranty, as some of the recofirmended steps may void the Warranty.Contact HIPOTRONICS' Service Deparlment for further information.

    Figure 6 lists the most frequently encountered problems, with possible causes and correc-tive actions. If a more complex problem arises, the enclosed schematics should providethe experienced technician with additionat information. See the enclosed Parts List to ob-tain part numbers for ali components listed.

    Figure 6 Diagnosing Problerns

    t7

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    POTFOilICS'THE I'EASURE OF A I.EADERuru&nU HI

    of any new merchandise that the merchandise t::1*: compliance with the following warranry claim proceduredefects in materials and workmanship under normal use :--and service for a period of one (1) year U",n *r ii" "i

    is a condition precedent to the obligation of Hipotronics'

    shipment. The obligation of Hipotronics, Inc.liril rht; Inc' under this warranty'warranty is limited, in its exclusive option- to reoair-replace or issue credit for parts or materials ti,friil^'ffi (a) Purchaser must notify Hipotronics' Inc' in writingto be defective, and is subject to Purchaser's complianc" by certified or registered mail' of the defect claimedwittr the Hipotronics, Inc. wananty claim Procedure as within twelve (12) months after the date of originalset forth below. The happening of any one or more of the shipment' Said notice shall describe in detail thefollowing events will serve to void this wananty and any defect' the defective part and the alleged

    cause of

    defect or damage resulting therefrom is specifically ex- the defect'cluded from wananty coverage: (b) At the exclusive option of Hipotonics, Inc., Pur-(a) defects due to accident, negligence, alteration, chaser shall dismantle or disassemble at Purchaser's

    modification, faulty installation, abuse or misuse by cost and expense and shall ship the defective parl orpurchaser or purchaser's agents or employees aterial' prepaid' to Hipotronics' Inc'' Brewster'New York 10509, for inspection, or permit an

    (b) attempted or actual dismantling, disassembling, authorized service representative of Hipotronics'service or repair by any person' firm or corporation Inc' to inspect the defective part or material at thenot specifically authorized in writing by Hipohon- Purchaser's premises' Purchaser shall provide fa-ics,Inc.

    .uurvrravu ur vYrrlsr';it*hi:'.HtJffi:'Y':;;:J;:T1-ff:::

    (c) defects caused by or due to handling bv carrier or :10111"^t::'j:::,* or material whether or notincurred during shipment, transshipment or other same is a componnt of or installed in' a devicemove.

    'l ''P'reu ' rrqtrJr'vurw' other than that manufactured or supplied byHipotronics, Inc. If disclosure shows that the defect

    This warranty covers only those parts and/or materials is not one for which Hipohonics' Inc' is liable' thedeemed by Hipotronics, Inc. to be defective within the Purchaser agrees to reimburse Hipotronics' lnc' for

    meaning of this warranty. Theliability of

    Hipotronics,all expense incurred'

    Inc. shall be limited to the repair, replacement or issuance /^\of credir for parts deemed deiective within d ;"*d; (c) Upon receipt of the defective part or material' orthis Warranty. Costs incurred by purchaser for labor or afler access to same' Hipotronics' lnc' shall inspectother expenses incidental to the inspection, repair, the part or material to determine the validity of Pur-replacement or issuance of credit for such parts and/or chaser's claim'materials shall be the sole responsibility :-t,J":"^T:ti: The validity of any warranty claim, purchaser's compli-This wananty shall not apply to any accessorieE^tff,:t ance with i{ipotronics, Inc. wananty claim procedure,materials not manufactured or supplied bt jT,::"}]tj' ilu obligation to either repair, replace or issue credit, orInc. and if, in the sole discretion of HipotTlt:^1"-: il""t tl" purchaser to deal directly with a manufacturerPurchaser's claim relates to any materials of _1":.11:t:I J, .oppti"r. are to be determined solely and exclusively bypart, or of the manufacturer of a device ":li:l-.tT iliporonics, Inc. any determination so made shall be finaldefective part is a component, Hipotronics, Inc. reserves ^^the right to disclaim liability under this w"t*ty *a t" and binding'direct that the Purchaser deal directly with such supplieror manufacturer. Hipotronics, Inc. agrees to assist thepurchaser in processing or settling any such claim withoutprejudicing its position as to liability

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    HTPOTROHfCS'

    -

    THE I'EASUBE OF A I.EAIIEB

    I4rurr&nty

    If it should become necessary to return the equipment described in this publication to the factory, theService Department of HIPOTRONICS, INC. must be contacted at (914) 279-8091. If tha retum of theunit is appropriate, a Return Authorization Number will be issued and you will be instructed as to themethod of return. If return of the unit is not advisable, other inspection alrangements will be made.

    Please have the following information available to help our seryice personnel identiff the unit and deter-mine the necessity for retum.

    MODEL:

    SERIAL NIJMBER:

    TYPE, (Part Number):

    (The MODEL, SERIAL NUMBER und TYPE are indicated on the bluck and silver tag affixed to the unil)

    REASOhI F'ORRETTJRN:

    DEF'ECT:

    Replacement PsrtsTo order replacement parts for this unit, please refer to the Parts List provided with this publication.Provide the number of the specific component along with the type (Part Number) of the unit, which isindicated on the Parts List and on the black and silver tag affixed to the unit.