AEG Protect C.1000, Руководство по эксплуатации, Страница: 117 / 128

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If large quantities of dust have accumulated, the unit should, as a
precaution, be cleaned with dry compressed air, in order to ensure
adequate heat dissipation.
The intervals at which visual checks should be performed are largely
determined by the site conditions.
10.2.2 CHECKING THE BATTERY
Progressive ageing of the battery system can be detected by regular
capacity checks. Every 6 months, perform measurements to compare
the achievable standby times, e.g. by simulating a mains failure. In this
case, the load should always have approximately the same capacity
demand. Please contact our hotline if the time drops drastically
compared to the previous measurement (refer page 69).
10.2.3 FAN CHECKING
Regularly check the fans for dust build-up and noticeably untypical noise
development. Clean the intake openings if they are blocked. Contact our
hotline if a fan is running unusually loud or irregularly (refer page 69).
10.3 BATTERY REPLACEMENT
Caution!
A battery can present a risk of electrical shock and can be very
dangerous if handled improperly.
The following precautions should be observed before replacing the
batteries:

Remove rings, watches and other metal objects.

If the battery replacement kit is damaged in anyway or shows signs of
leakage, contact your dealer immediately.

Properly recycle or dispose of used batteries. Do not dispose of
batteries in a fire. The batteries may explode.