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5.2 Change battery
1. Open the device as described in "7.2 Open
the device" on page 23.
2. Undo cable connection X1 on the main circuit
board.
3. Remove battery
from the housing.
30
4. Insert a new battery.
5. Restore cable connection X1.
6. Close the housing as described in "7.3 Close
the device" on page 24.
5.3 Change O-rings of plug
connection
Materials and tools required
•
Watchmaker's screwdriver (cleaned with spirit)
•
Tubular hexagon box wrench 12 mm
1. Use the 12 mm tubular hexagon box wrench
to unscrew plug connection
duct outlet
.
3
2. Lift O-rings
and
25
26
grooves using the cleaned watchmaker's
screwdriver.
Be careful not to damage the grooves.
3. Clean the grooves with a dry cloth.
4. Push the new O-rings
the relevant groove. Do not use a tool for this.
5. Screw the plug connector back into oxygen
duct outlet
.
3
16
Servicing
from oxygen
47
carefully out of their
and
carefully into
25
26
24
X1
30
43
9
8
3
47
25
26
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