Classic
LXFF, FF
-
Installation
31
SERVICING
SER
VICING
63 AIR PRESSURE SWITCH (APS) REPLACEMENT
1.
Remove the 2 silicon rubber tubes from the fan sensing points.
2.
Disconnect the fan leads.
3a. Rear flue.
Slacken the M4 screw securing the flue connector to the
fan. Disconnect the connector from the fan and slide into the flue.
3b. Side or top flue.
Slacken off two M4 screws securing the flue elbow
and flue connector. Disconnect the flue connector from the elbow and
slide into the flue. Remove the flue elbow.
4.
Disconnect the silicon rubber tube from the rear of the collector hood.
5.
Slacken the two M5 nuts on the front tie rods, releasing the tie rods
from the combustion chamber.
6.
Remove the M5 central fixing screw at the rear of the collector hood
and remove collector hood / fan assembly.
7.
Remove the three M4 screws retaining the fan to the collector hood.
8.
Re-assemble in reverse order, ensuring the fan leads, and 3 sensing
tubes are reconnected.
62 FAN REPLACEMENT
9.
Refit the boiler casing.
10.
Check the boiler operation.
6.
Remove the earth wire on the PCB from its connection to the
earth stud inside the control box.
7.
Remove the 2 connections from the on/off switch and remove
the switch.
8.
Compress the barbs on the PCB stand-offs to release the
PCB from the box
9.
Fit the new PCB and re-assemble in reverse order, ensuring
the correct orientation of the switch.
10.
Refit the boiler casing.
11.
Check the operation of the boiler.
1.
Refer to Frame 54.
2.
Remove the APS fixing screw.
3.
Remove both sensing tubes from the APS.
4.
Remove the 3 electrical connections from the APS.
5.
Connect the new APS in reverse order.
6.
Refit the APS with the fixing screw.
7.
Refit the boiler casing.
8.
Check the boiler operation.
64 PRINTED CIRCUIT BOARD (PCB) REPLACEMENT
Note.
Refer to Frames 69 & 70 of 'Exploded Views' for
illustration of the procedure detailed below.
1.
Refer to Frame 54.
2.
Remove the control box fixing screw. Pull the box forward
and downward to disengage.
3.
Remove the HT lead from the PCB
4.
Remove the 6 push-in connectors from the PCB.
5.
Remove the neutral wire on the PCB from its connection to
the back of the socket inside the control box.
65 COMBUSTION CHAMBER INSULATION REPLACEMENT
1.
Refer to Frame 54.
2.
Remove the burner and air box assembly.
Refer to Frame 49.
3.
Remove the 4 tie rods.
4.
Remove the combustion chamber.
5.
Remove the 2 side panel retaining brackets.
6.
Remove the side insulation panels.
7.
Remove the front and rear
insulation panels.
8.
Fit the new front and rear
insulation panels.
9.
Fit the new side panels and
retain with the brackets and
screws previously removed.
10.
Re-assemble in reverse order.
Summary of Contents for Classic FF230
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