23
MAINTENANCE
WARNING :
TO AVOID ELECTRICAL SHOCK REMOVE TEST LEADS BEFORE OPENING THE COVER.
4-1 General Maintenance
To keep the instrument clean, wipe the case with a damp cloth and detergent, do not use abrasives or solvents.
Any adjustment, maintenance and repair of the opened instrument with voltage present shall be avoided as far as
possible and, if inevitable, shall be carried out by a skilled person who is aware of the hazard involved.
Whenever it is likely that the protection has been impaired, the instrument shall be made inoperative and be secured
against any unintended operation.
The protection is likely to be impaired if, for example, the apparatus:
— shows visible damage,
— fails to perform the intended measurements,
— has been subjected to prolonged storage under unfavorable conditions,
— has been subjected to severe transport stresses.
