Maintenance; Cleaning; Battery Test & Replacement - AEMC 721 User Manual

WARNING
• To avoid electrical shock, do not attempt to perform any servicing unless
you are qualified to do so.
• To avoid electrical shock and/or damage to the probe, do not get water or
other foreign agents into the case. Turn the Model 721 OFF and discon-
nect the meter from all circuits and inputs before opening the case.
6.1

Cleaning

• Wipe the case and jaw covers with a damp cloth and mild detergent.
• Do not use abrasives or solvents.
• If rusted, sand with very fine sandpaper, then lightly oil. Wipe off
excess oil to prevent it from dripping into the case.
6.2 Battery Test & Replacement
To determine useful battery life, a self-test may be initiated by holding
down any push button while turning the rotary selector from the OFF posi-
tion to Amps or Volts.
All indicators will light up. The Battery
symbol, as well as battery segment indi-
cator, will blink indicating useful battery
life remaining.
A full bargraph display represents 60
hours of useful battery life. Each bar
segment represents approximately two
hours of battery life.
It is considered good practice to replace any battery with only a few hours
of life remaining.
Power Source: 9V Alkaline battery (NEDA 1604, 6LF22, 6LR61)
Source Life: 50 hr continuous use approx
Harmonic Meter Model 721
C
HAPTER
M
AINTENANCE
6
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