SERVICING
45
IMAX XTRA -
Installation & Servicing
59 GAS VALVE REPLACEMENT
1.
Refer to Frame 49.
2.
Remove the jacket front, inner front and control
fascia panels. (Refer to Frame 52).
3.
Remove the 4 screws securing the controls
fascia support bracket and withdraw.
4.
Disconnect the electrical connections from the
gas valve.
5.
Release the securing clip and disconnect the
pressure sensing tube from the gas valve.
6.
Whilst providing temporary support for the inlet
gas pipe, remove the 4 screws securing the inlet
flange.
7.
Whilst providing temporary support for the gas
valve, remove the 4 screws securing the gas
valve outlet.
8.
Withdraw the gas valve taking care to retain the
inlet and outlet O rings.
9.
Re-assemble in reverse order. Re-secure the
clip over the pressure sensing tube using pliers
to apply the grip. Replace gas valve inlet/outlet
O rings if showing signs of wear.
10.
Refer to instruction sheet with spare gas valve
for correct setting procedure.
11.
Refer to Frame 49 for final safety checks.
60 AIR PRESSURE SWITCH REPLACEMENT
1.
Refer to Frame 49.
2.
Remove the jacket front and inner front panels. (Refer
to Frame 52).
3.
Remove the 2 electrical connections from the air
pressure switch (no polarity) which is located at the top
rear of the main control panel.
4.
Release the securing clips and disconnect the pressure
sensing tubes.
5.
The air pressure switch can now be unclipped from its
supporting cradle.
6.
Re-assemble in reverse order. Connect the sensing
tube from the T-piece to P1 and the sensing tube from
the gas valve outlet elbow to P2.
7.
Refer to Frame 49 for final safety checks.
Pressure
sensing
tubes
6
7
5
4
Left and right terminals
(no polarity)
SER
VICING
