SERVICING
27
Mexico Super CF495 - CF4140
-
Installation & Servicing
Thermostat
pocket
Hook plate
Sensor end
Mex 1861
"
mex2209
43 IGNITION LEAD REPLACEMENT
Ignition
lead
Pilot supply
MEX 2143
Purse clip
44 OVERHEAT THERMOSTAT REPLACEMENT (if fitted)
1.
Refer to Frame 38.
2.
Remove the 2 screws, lift off the
front panel and remove the grille
assembly. Refer to Frame 30.
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 4 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.
1.
Refer to Frame 38.
2.
Remove the 2 screws and lift off the lower front panel.
Refer to Frame 30.
3.
Slacken the screw at the thermostat pocket and withdraw
the phial from the pocket.
4.
Remove the thermostat retaining nut and withdraw the
thermostat from the control panel.
5.
Transfer the electrical leads from the old thermostat to
the replacement (polarity is not important).
6.
Fit the new thermostat, ensuring that the alignment peg
on the thermostat sits in the small hole adjacent to the
main fixing hole, and reassemble in reverse order.
7.
Replace the lower front panel and secure with the 2
fixing screws.
8.
Check the operation of the boiler.
SER
VICING
200944-1.p65
3/8/2004, 3:41 PM
27
