OPERATING MANUAL MMR-630 Revision 1.6
26
5
Power supply
5.1
Monitoring of the power supply voltage
The level of the charge of the batteries or accumulators is currently indicated by the symbol in the
right upper corner of the display:
Notes:
Bear in mind:
The
BAT
message displayed in the right upper corner of the screen (instead of the battery sym-
bol) means insufficient power supply voltage and the need to charge the accumulators,
Measurements realised with an insufficient meter power supply voltage are distorted with addi-
tional errors which are impossible to ascertain by the user and thus they cannot constitute a basis
for a conclusion of correctness of the tested resistance values.
5.2 Replacement of accumulators
The MMR-630 meter is equipped with a package of NiMH accumulators and a charger. Those ac-
cumulators have a series of advantages, such as lack of harmful substances, no memory effect,
higher capacity as compared to NiCd accumulators at the same size.
The package of accumulators is placed in a compartment. The charger is installed inside the me-
ter casing and it may be used solely to charge the original accumulators.
WARNING:
If the test leads are left in the sockets during replacement of the accumulators,
there is a risk of electric shock with a dangerous voltage.
In order to replace the package of accumulators it is necessary to do the following:
Remove all the leads from the terminals and turn the meter off,
Remove the four screws of the accumulators/batteries compartment (in the lower part of the cas-
ing),
Remove the package of accumulators and the package connection,
Remove the package connection plug,
Connect the power supply plug of the new package of accumulators,
Place the connection in the bend of the rubber profile,
Insert the package in the accumulator compartment,
Place and screw the cover of the compartment.
Summary of Contents for MMR-630
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