Glow-worm Xtrafast 96-120 - Manual (Page 29)

29 2000221595
IMPORTANT INFORMATION
WARNING: Before commencing the replacement of any
component, isolate appliance from electrical supply and turn off
gas at service cock.
Replacement of parts must be carried out by a competent
person.
When replacing components it may be necessary to renew
sealing washers, gaskets and 'O' rings. If new ones are
supplied with replacement components they must be used.
All parts are replaced in reverse order to removal.
If any gas-carrying components are disturbed, removed or
replaced it will be necessary on completion to check for gas
soundness with leak detection fluid.
19.1 Domestic hot water thermistor, refer to
diagram 19.1
Before starting refer to the front of Section 19 Important
information.
• Remove the front panel, refer to Section 16.3.
• Lower the control panel, refer to Section 16.4.
• Locate domestic hot water thermistor on hot water flow pipe on
right hand side of boiler adjacent to gas control valve.
• Unclip thermistor from pipe.
• Disconnect leads from thermistor.
• Fit leads to replacement thermistor and fit thermistor to pipe.
The polarity is not important.
19.2 Central heating thermistor, refer to
diagram 19.2
Before starting refer to the front of Section 19 Important
information.
• Remove the front panel, refer to Section 16.3.
• Lower the control panel, refer to Section 16.4.
• Locate central heating thermistor on heating flow pipe on
centre of boiler.
• Unclip thermistor from pipe.
• Disconnect leads from thermistor.
• Fit leads to replacement thermistor and fit thermistor to pipe.
The polarity is not important.
19.3 Fan, refer to diagram 19.3
Before starting refer to the front of Section 19 Important
information.
• Remove the front panel, refer to Section 16.3.
• Lower the control panel, refer to Section 16.4.
• Remove the sealed chamber cover, refer to Section 16.5.
• Disconnect power supply leads and earth lead from fan.
• Unscrew and remove two fan retaining screws at front edge of
mounting plate.
• Remove fan with mounting plate attached by pulling forwards
out of the boiler.
• Remove fan from mounting plate.
Note: When re-fitting, make sure that the two lugs on the fan
mounting plate engage in the flue hood.
• Reconnect electrical leads.
19 Replacement of Parts
9672
Diagram 19.1
9671
Diagram 19.2
DOMESTIC
HOT WATER
THERMISTOR
CENTRAL
HEATING
THERMISTOR
➜
➜
Diagram 19.3
9670
FAN
RETAINING
SLOTS
➜
➜
➜
19.4 Fan sensor, refer to diagram 19.3
Before starting refer to the front of Section 19 Important
information.
• Remove the front panel, refer to Section 16.3.
• Lower the control panel, refer to Section 16.4.
• Remove the sealed chamber cover, refer to Section 16.5.
• Remove the 2 fan sensor retaining screws.
• Remove the fan sensor and disconnect the electrical
connection, avoid straining the cables.
➜
➜
➜