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16 

 

Section 3 

 

Maintenance 

 

WARNING 

THESE SERVICE INSTRUCTIONS ARE FOR USE BY QUALIFIED PERSONNEL ONLY.  TO 

AVOID ELECTRIC SHOCK, DO NOT PERFORM ANY SERVICING OTHER THAN THAT 

CONTAINED IN THE OPERATING INSTRUCTIONS UNLESS YOU ARE QUALIFIED TO DO 

SO. 

 

Introduction 

 

This  section  of  the  manual  contains  maintenance  information  for  the  Model  GF-30AC-T  High  Current 
Ground Tester.  This maintenance information  is divided into service information, general maintenance, 
a performance test, and a calibration procedure.  The performance test is recommended as an acceptance 
test  when  the  instrument  is  first  received,  and  later  as  a preventative maintenance tool to verify proper 
instrument operation.  A 1-year calibration cycle is recommended to maintain the specifications given in 
Section 1.  The Test equipment required for both the performance test and calibration is a DMM able to 
read true rms 0-3 VAC   1%.   

 

Service Information 

 

The GF-30AC-T is warranted to the original purchaser for a period of 1 year .  This 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  manufacturer  is  also  available  for  calibration  and  /  or  repair  of  instruments  that  are  beyond  their 
warranty period.  Contact the manufacturer for a cost quotation.  Ship the instrument and your remittance 
according to the instructions given by the manufacturer. 

 

General Maintenance 

 

Interior Access 

 

NOTE 

To avoid contaminating the PWB with oil from your fingers, handle it by the edges or wear gloves.  If the 
PWB becomes contaminated, refer to the cleaning procedures given later in this section. 

 

Summary of Contents for GF-30AC-T

Page 1: ...GF 30AC T Ground Circuit Tester Instruction Manual...

Page 2: ...represents the latest in high current production line 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 s...

Page 3: ...3...

Page 4: ...Duration Adjustment 12 Operating Techniques 12 Setting the Test Time Duration 12 Testing the EUT 12 Test results 13 Green Light 13 Red Light 13 Red Light and Buzzer Sound 13 Simultaneous Red and Gree...

Page 5: ...etermined amount of time after the Test Button has been released The instrument advises the operator of any internal malfunction affecting the output A one time setup procedure allows the instrument t...

Page 6: ...est Duration Timer 0 25 sec approx Duty cycle 100 ENVIRONMENTAL Operating Temperature 15 35 C Relative Humidity Range 0 90 non condensing GENERAL Input power requirements See rear panel for input volt...

Page 7: ...rotection is provided to prevent damage during shipment We recommend that the instrument be surrounded by at least one inch of shock absorbing material on all sides of the container Remove the Tester...

Page 8: ...Red Fail Indicator Lamp Incandescent lamp When lit indicates that equipment under test has more than 100 milliohms in grounding path or is incorrectly connected to tester Replace with 6 3V type 86 la...

Page 9: ...section of this manual for procedure 5 Appliance Inlet Fuseholder Power Switch Use 18 AWG cordset to connect tester to appropriate source of supply Replace line fuse Turn tester ON OFF 6 Fuse replacem...

Page 10: ...ductive surface Push the Test button The GF 30AC T should indicate a Fail by lighting the red light and sounding the internal buzzer If your Tester yielded the proper results it is working properly If...

Page 11: ...safety agency inspection personnel Adjusting the Pass Fail Point for products with non removable power cords Use this adjustment procedure if the equipment under test uses a non detachable power cord...

Page 12: ...t will continue for the amount of time set during this Procedure after the Test Button is released Therefore we recommend that the Test Duration control be adjusted to its minimum position when a manu...

Page 13: ...the ground system of the EUT has less than 100 milliohm resistance For most categories of equipment this result is acceptable Red Light A red light indicates the ground system of the EUT has more than...

Page 14: ...er operation by following steps 1 3 in Adjusting the Pass Fail Point using the supplied Test Cordset Press the Test Button and measure the voltage across the calibration resistor If the unit is workin...

Page 15: ...st USA is available Phone 800 748 6224 Hours 8 00 AM 4 00 PM Pacific Time Also available on our web site at www compwest com Contact Compliance West USA 650 Gateway Center Way Suite D San Diego CA 921...

Page 16: ...The Test equipment required for both the performance test and calibration is a DMM able to read true rms 0 3 VAC 1 Service Information The GF 30AC T is warranted to the original purchaser for a perio...

Page 17: ...iagram for high voltage areas Cleaning CAUTION Do not use aromatic hydrocarbons or chlorinated solvents for cleaning These solutions will react with the plastic materials used in the instrument Clean...

Page 18: ...el calibration resistor using the alligator clip wire assembly 3 Connect the DMM across the calibration resistor 4 Push and hold the Test Button on the front panel For a 25 amp output the DMM should r...

Page 19: ...libration resistor is 2 5 Vrms Using Ohms law this corresponds to an output current of 25 Amps Other output current levels can be set in the same manner Adjust Buzzer 5 With the calibration resistor s...

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