Compliance West GFM-40ac Instruction Manual Download Page 1 | Manualshive

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GFM-40ac

Ground Circuit Tester

Instruction Manual

COMPLIANCE

WEST

USA

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Summary of Contents for GFM-40ac

Page 1: ...GFM 40ac Ground Circuit Tester Instruction Manual COMPLIANCE WESTUSA ...

Page 2: ...nts the latest in high current laboratory and development testing To fully appreciate all the features of your new meter we suggest that you take a few moments to review this manual Compliance West USA stands by your instrument with a full one year warranty and a loaner instrument policy If the need arises please don t hesitate to call on us Thank you for your trust and confidence Rev 1 1 October ...

Page 3: ...power cords 5 Operating Techniques 6 Testing the EUT Laboratory Use 6 Test results Laboratory Use 8 Using the GFM 40ac for Production Line Testing 8 Setting the Current Level 8 Production Line Testing 8 Test results Production Line Use 9 Maintenance 11 Introduction 11 Service Information 11 General Information 11 Interior Access 11 Calibration Access 11 Cleaning 12 Performance Test 12 Operation Me...

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Page 5: ... ouput is adjustable by a front panel control from 10 to 40 amps ac A one time setup procedure allows the instrument to dynamically compensate for lead resistance throughout its current range allowing a true measurement of the grounding circuit of the equipment under test The GFM 40ac may be used in a manual mode for production line tests See Operating Techniques for further information Your teste...

Page 6: ...40 C Relative Humidity Range 0 90 non condensing GENERAL Input power requirements 108 127 or 216 254 volts 50 60 Hz Weight 11 lbs Table 1 1 GFM 40ac Specifications Non Detachable Cordset AWG Non Detachable Cordset Maximum Length 18 6 feet 16 10 feet 14 14 feet 12 20 feet Table 1 2 Non Detachable Cordset Maximum Length Custom configurations available for longer non detachable cords Contact factory ...

Page 7: ...n is provided to prevent damage during shipment We recommend that the instrument be surrounded by at least three inches of shock absorbing material on all sides of the container Remove the Tester from its container and place it on a test bench AC Line Voltage Requirements AC line voltage requirements for your Tester are noted on the rear panel of the instrument Do not connect the instrument to a d...

Page 8: ...ent lamp When lamp lit indicates tester power is on and ready to test When button is pushed test current is applied to the equipment under test Test continues until button is released 4 Current adjustment knob Adjusts current output of tester 5 Device Receptacle NEMA 5 15R receptacle For connection of the Equipment Under Test with a non removable power cord or with 10 AWG test cord provided 6 Chas...

Page 9: ...all Compliance West USA for assistance Voltage Zero Adjustment Setting Voltage Zero using the supplied IEC Test Cordset 1 Connect your GFM 40ac Tester to a correctly rated source of supply and turn the power switch to the I or ON position The tester will perform a self diagnostic test If the Volts Amps switch is set to Volts the meter will briefly swing and return to zero 2 Plug the split end plug...

Page 10: ...he plastic calibration screwdriver into the potentiometer behind the upper hole in the rear panel marked Voltage Zero 7 Push and hold the Test Button Holding the test button will continue the test until the button is released 8 With the Test Button pressed adjust the CAL knob on the front panel Simultaneously adjust the rear panel potentiometer until the meter output remains steady while the CAL k...

Page 11: ...DURATION VOLTAGE ZERO 1 0 CALIBRATION RESISTOR 3 1 2 Figure 2 2 Controls Indicators Connectors Model GFM 40ac Rear Panel ITEM NO NAME FUNCTION 1 Voltage Zero Used to adjust meter See Calibrating the GFM 40ac Tester section of this manual for procedure 2 Test Duration Setting Used to set test duration Set to test durations between 1 and 120 seconds 3 Appliance Inlet Fuseholder Power Switch Uses 18 ...

Page 12: ...h or gauge test lead or Cord is used and every time the instrument is returned to production line use following an annual calibration or laboratory testing In the following section EUT means equipment under test CAUTION High current Risk of burns Remove any conductive jewelry before using the Tester NOTE If the EUT uses a detachable power cord use the supplied 10 AWG Test Power Cord not the EUT po...

Page 13: ...as the test button is pressed A test time of 5 seconds is recommended 8 The voltage drop of the grounding circuit alone not counting the resistance of the test leads will be shown on the front panel meter 9 To test for longer times we recommend the method above be used first to validate test setup After the test setup is reliable set the Duration control on the rear panel to the desired test durat...

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Page 15: ...M able to read true rms 0 4VAC 1 Service Information The GFM 40ac is warranted to the original purchaser for a period of 1 year The warranty does not cover problems due to misuse or neglect Malfunctions which occur within the limits of the warranty will be corrected at no charge Mail the instrument post paid to the manufacturer Dated proof of purchase is required for all in warranty repairs The ma...

Page 16: ...t to stabilize and perform the test at an ambient temperature of 23 C 5 C 73 F 9 F Operation Meter Function Test 1 Connect the GFM 40ac to a proper source of supply using the included 18 AWG power supply cord 2 Disconnect all other leads and turn the GFM 40ac on 3 Verify the blue lamp is lit 4 Using a test lead short the ground of the front panel test power receptacle to the return lead receptacle...

Page 17: ...back panel or other 0 1 ohm resistor using the alligator clip wire assembly 3 Connect the DMM across the 0 1 ohm resistor 4 Switch the Volts Amps switch on the front panel of the GFM 40ac to Volts 5 Adjust the CAL knob on the front panel of the GFM 40ac until the DMM reads 2 5Vdc 6 Push the Test Button on the front panel and adjust the resistor marked R26 until the front panel meter of the GFM 40a...

Page 18: ...fuse F1 If unit works correctly check pilot light and replace if necessary with a 14V type 73 bulb Meter will not fully deflect on Amps scale Check for full voltage deflection If meter fully deflects go to next paragraph If not service is required Perform voltage zero adjustment with supplied IEC cordset If meter fully deflects during this adjustment the resistance in your test setup is too high C...

Page 19: ...ne 800 748 6224 Technical Assistance is available from Compliance West USA between the hours of 8 30 AM and 4 00 PM Pacific Time Compliance West USA 2120 Jimmy Durante Blvd Suite 124 Del Mar CA 92014 Phone 858 481 6454 FAX 858 481 8527 info compwest com ...

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