Maintenance - Chauvin Arnoux C.A 1725 Notice D'utilisation

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The tachometer requires no special maintenance other than changing the battery and cleaning the
housing.
- Adjustments
The device has no internal adjustments. Measurement accuracy is ensured by a highly stable crystal
oscillator.
- Cleaning the housing
Clean with a cloth moistened with soapy water, then plain water.
A dirty sighting window can severely impair the sighting characteristics, making any measurement
impossible or unstable.
- Cleaning the mechanical kit
Clean with a cloth moistened with soapy water, then plain water.
The use of alcohol or of another solvent might irreversibly damage the mechanical adapter by degrading
its lubrication.
- Replacement of the battery
When the battery symbol appears on the display unit, the battery must be replaced.
Set the switch to "OFF".
- Open the battery compartment, located on the back of the device. Unscrew the screw using a tool
(coin, etc.)
- Remove the battery and insert a new one in its place, taking care with the polarity. Use a 6LF22 or
similar alkaline battery.
- Close the cover of the compartment and tighten the screw moderately.
- Storage
For extended periods of non-use, we recommend removing the battery from the device and storing it
separately.
- Metrological check
Like all measuring or testing devices, the instrument must be checked regularly.
This instrument should be checked at least once a year. For checks and calibrations, contact one of our
accredited metrology laboratories (information and contact details available on request), at our Chauvin
Arnoux subsidiary or the branch in your country.

5. MAINTENANCE

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