USER MANUAL M80
16
10.
Cleaning and storage
Tester does not need any special maintenance if used according to user manual.
Remove tester from all test points before cleaning.
Use a lightly damp cloth with neutral detergent for cleaning the instrument. Do not use
abrasives or solvents.
Do not expose the instrument to direct sun light, high temperature and humidity or dewfall.
Remove batteries when the instrument will not be in use for a long period.
11 .Safety advices
•
Depending on the internal impedance of the voltage detector there will be a different
capability of indicating the presence or absence of operating voltage in case of the
presence of interference voltage.
•
A voltage detector of relatively low internal impedance, compared to the reference
value of 100 kΩ, will not indicate all interference voltages having an original voltage
value above the ELV level. When in contact with the parts to be tested, the voltage
detector may discharge temporarily the interference voltage to a level below the
ELV, but it will be back to the original value when the voltage detector is removed.
•
When the indication “voltage present” does not appear, it is highly recommended
installing earthing equipment before work.
•
A voltage detector of relatively high internal impedance, compared to the reference
value of 100 kΩ, may not permit to clearly indicate the absence of operating voltage
in case of presence of interference voltage.
•
When the indication “voltage present” appears on a part that is expected to be
disconnected of the installation, it is highly recommended confirming by another
means (e.g. use of an adequate voltage detector, visual check of the disconnecting
point of the electric circuit, etc.) that there is no operating voltage on the part to be
tested and to conclude that the voltage indicated by the voltage detector is an
interference voltage.
•
A voltage detector declaring two values of internal impedance has passed a
performance test of managing interference voltages and is (within technical limits)
able to distinguish operating voltage from interference voltage and has a means to
directly or indirectly indicate which type of voltage is present.