M4000 Insulation Analyzer User Guide
72A-1230 Rev. F 4-5
July 22, 2005
• Do not drop the instrument.
• Do not bend or coil the High Voltage Test Cable too tightly, no smaller
than a 12-inch diameter coil.
• Do not use test leads for hoisting.
• Do not drag the High Voltage Test Cable or other leads across the
ground, particularly if the ground surface is crushed stone.
• Do not yank at a Low Voltage Test Lead to disconnect its outboard
clip, and do not yank any lead from its instrument connection.
Preventive
Maintenance
The following preventive maintenance actions are suggested:
• Periodically check all screw connections for tightness.
• Examine the High Voltage Test Cable periodically and check for
corrosion, loose screws, gouges or cuts in the outer protective jacket,
and for signs of tracking on the inboard and outboard potheads.
• Examine the inboard connectors of the various leads and accessories
periodically.
• Periodically examine the connectors on the instrument case.
• Visually examine the safety switches periodically for worn
connections.
• Periodically check that the HV Pothead receptacle on the instrument
case is clean and dry.
• Periodically run the Calibration Verification Test (page 4-26) to check
for proper system operation.
Detailed Troubleshooting Of The M4100 Instrument
This section provides information that is useful in:
• Troubleshooting problems related to M4100 performance
• Performing specific external and internal checks to isolate the cause of
M4100 malfunctions
• Accessing and replacing M4100 components which have failed
• Installing upgrades to certain M4100 components
NOTE To address M4000 test set performance problems, it is important to follow
the guidelines in the previous section before making the assumption that
the M4100 is at fault.
The major parts of this section and their purposes are summarized below:
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