Securing The Instrument; Battery Replacement - Benning ST 710 Bedienungsanleitung

Only the voltage potentials between the individual connections L, N and PE are
measured. The measurement does not provide any information on the proper
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installation of the shock-proof socket. There will be no warning in case of a
dangerous contact voltage of the PE conductor!
See figure 6: Voltage measurement on external shock-proof socket
9. Maintenance
Before opening the BENNING ST 710, make sure that it is free of voltage!
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Electrical danger!
Work on the opened BENNING ST 710 under voltage must be carried out by skilled electri-
cians with special precautions for the prevention of accidents only.
Make sure that the BENNING ST 710 is free of voltage as described below before opening the
instrument:
- Switch the tester off.
- Remove all connecting cables from the object.

9.1 Securing the instrument

Under certain circumstances safe operation of the BENNING ST 710 is no longer ensured, for
example in the case of:
- Visible damage of the casing.
- Incorrect measurement results.
- Recognisable consequences of prolonged storage under improper conditions.
- Recognisable consequences of extraordinary transportation stress.
In such cases the BENNING ST 710 must be switched off immediately, disconnected from the
measuring points and secured to prevent further utilisation.
9.2 Cleaning
Clean the exterior of the housing with a clean dry cloth (exception: special cleaning wipers).
Avoid using solvents and/ or scouring agents for cleaning the instrument. It is important to make
sure that the battery compartment and battery contacts are not contaminated by leaking elec-
trolyte.
If electrolyte contamination or white deposits occur in the area of the batteries or battery com-
partment, clean them too with a dry cloth.

9.3 Battery replacement

Before opening the BENNING ST 710, make sure that it is free of voltage!
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Electrical danger!
The BENNING ST 710 is supplied by means of six 1.5 V batteries/ type AA (IEC LR6).
A battery replacement (see Figure 7) is required, if the battery symbol appears on the display
unit 5 .
Proceed as follows to replace the batteries:
- Switch the BENNING ST 710 off.
- Put the BENNING ST 710 face down and unscrew the screw of the battery compartment
cover.
- Lift off the battery compartment cover (in the area of the housing slots) from the bottom part
of the battery compartment.
- Remove the discharged batteries from the battery compartment.
- Then, insert the new batteries into the battery compartment at the provided places (please
observe correct polarity of the batteries).
- Lock the battery compartment cover into place on the bottom part and tighten the screw.
See figure 7: Battery replacement
02/ 2011
or
BENNING ST 710
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