Chauvin Arnoux N93 Notice De Fonctionnement page 40

Except for the batteries, the instrument contains no parts that can be
replaced by personnel who have not been specially trained and accredited.
Any unauthorized repair or replacement of a part by an "equivalent" may
gravely impair safety.
4.1. CLEANING
Disconnect the current sensor completely.
Use a soft cloth, dampened with soapy water. Rinse with a damp cloth and dry
rapidly with a dry cloth or forced air. Do not use alcohol, solvents, or hydrocarbons.
Keep the air gaps of the clamps perfectly clean.
See to it that no foreign body interferes with the operation of the snap lock device
of the sensor.
4.2. REPLACING THE BATTERY OF THE PAC93
„ Disconnect the PAC93 completely and turn the rotary switch to OFF.
„ Turn the PAC93 over.
„ Use a screwdriver to unscrew the screws and remove the battery compartment
cover.
„ Withdraw the battery from its compartment without pulling on the wires.
„ Disconnect the old battery without pulling on the wires and connect the new one
in its place, observing the polarity.
Spent batteries must not be treated as ordinary household waste. Take them
to the appropriate recycling collection point.
„ Put the battery into its compartment.
„ Put the cover back in place and screw the screws back in.
4. MAINTENANCE
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