Weinmann BiLevel-ST VENTImotion WM 24800, Инструкции по обслуживанию и ремонту

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40 Repairguide for VENTImotion/VENTIlogic
7. Undo the four screws
51
and remove control
board
50
.
8. Remove spring
54
from the control board and
remove battery
52
(see "7.9 Replace battery
on control board" on page 42). You need the
metal spring for the new control board.
If it is unnecessary to replace the display, con-
tinue from step
11.
9. Remove display
49
.
10. Insert a new display
49
.
Caution!
The display may not tilt and must be straight in
the guides.
11. Insert a new battery
52
in the appropriate hold-
er of the new control board and screw on
spring
54
(see "7.9 Replace battery on control
board" on page 42).
12. Put the control board in the top part of the
housing and attach it with the four screws
51
.
13. Reattach the pressure measurement hoses
57
to the pressure sensors.
Ensure that you do not switch the hoses:
connect
the connection of the flow sensor marked
Hi
to
the hose connector marked
Hi
at the device
outlet.
14. Attach the flow measurement hoses
56
to the
flow sensor.
Ensure that you do not switch the hoses:
connect
the connection of the flow sensor marked
Lo
to
the hose connector marked
Lo
at the device
outlet.
15. To prevent hoses kinking, position flow mea-
surement hoses
56
and pressure measurement
hoses
57
as shown.
50
54
Display buffer
51
49
52
56
57
Lo
Hi
56
57