Wöhler DH 420, Руководство по эксплуатации

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Maintenance
41
EN
7.1 Replace hose

Unwind the hose to be replaced completely
and release the quick-release coupling.
WARNING!
Exercise due care and attention when pulling out
the hose: The last winding could be under tension
and cause the hose to make a whipping move-
ment.

Insert the replacement hose in the quick-
release coupling and wind the hose evenly on-
to the viper.
7.2 Replace battery The digital meter counter is fitted with a long-life
battery that only needs to be replaced every 5-10
years. The battery status is shown by the battery
status indicator in the display. To replace the bat-
tery proceed as follows:
Fig. 34: Replace battery

Pull the frame away from the display.

Carefully grip the display and pull it out along
with the PCB and battery.

Remove the battery from the rear of the PBC
and connect a new 3.6 V lithium battery.

Place the display along with the PCB and
battery back in the original position.

Put the frame of the display back in its position
and press it securely into place.