SERVICING
27
Mexico Slimline CF440 -
Installation & Servicing
40 OVERHEAT THERMOSTAT REPLACEMENT
41 IGNITION LEAD REPLACEMENT
1.
Refer to Frame 35.
2.
Remove the 2 screws and lift off the lower front
panel. Refer to Frame 29.
3.
Disconnect the in-line connector on the PCB
lead.
4.
Remove the Burner On neon cable from the
back of the control panel.
5.
Remove the 2 screws and pull down the
control panel tabs to clear the top panel.
6.
Remove the split pin at the thermostat pocket
and withdraw the phials from the pocket.
7.
Remove the thermostat retaining nut and
withdraw the thermostat from the PCB box.
8.
Transfer the electrical leads from the old
thermostat to the replacement (polarity is not
important).
9.
Fit the new thermostat, ensuring that the
alignment peg on the thermostat sits in the
small hole adjacent to the main fixing hole.
10. Reassemble in reverse order.
11.
Replace the lower front panel and secure with
the 2 fixing screws.
12.
Check the operation of the boiler.
1.
Refer to Frame 35.
2.
Remove the 2 screws, lift off the front
panel and remove the grille assembly.
Refer to Frame 29.
3.
Disconnect the electrical leads from
the gas valve.
4.
Disconnect the ignition lead from the
PCB.
5.
Undo the gas cock union. Remove the
2 wing nuts and withdraw the burner
and controls assembly, complete, from
the boiler.
6.
Remove the purse clip.
7.
Disconnect the ignition lead from the
base of the electrode and the PCB, and
withdraw the lead.
8.
Fit the new lead and reassemble in
reverse order.
8
7
Reset
button
MEX 2291
MEX 2292
5
5
SER
VICING
200946-1.p65
3/9/2004, 3:30 PM
27
