Glow-worm Xtrafast 96-120 User Manual

Page 33

Advertising
background image

33

2000221595

19 Replacement of Parts

Diagram 19.13

9325

19.14 Gas control valve stepper motor, refer to
diagram 19.13.

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 gas control valve stepper motor attached to front of gas
valve.

• Disconnect multi-plug from stepper motor.

• Remove screws securing stepper motor onto gas valve body.

• Withdraw stepper motor from gas valve body.

• Fit replacement stepper motor in reverse order to removal
taking care not to damage the ‘O’ ring.

19.15 Gas Control valve assembly, refer to
diagram 19.13.

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.

• Disconnect multi-plug from stepper motor.

• Disconnect electrical connections from spark ignition unit
above gas control valve assembly.

• Disconnect electrical connection from R/H side of gas control
valve assembly mounting bracket.

• Undo main gas supply nut from main burner, see diagram
16.4.

Note: The washer must be kept for use on reassembly.

• Undo main gas union nut between gas control valve supply
pipe and gas inlet valve.

Note: The washer must be kept for use on reassembly.

• Unscrew and remove screw securing gas control valve mounting
bracket to boiler frame.

• Withdraw gas control valve assembly, pipes and bracket,
taking care not to strain the electrical connection at the rear of
the gas control valve.

• While supporting the gas control valve assembly disconnect
the electrical connection at the rear of the gas control valve, see
diagram 19.13
.

• Using old gas control valve as a guide, transfer gas pipes and
bracket from old gas control valve to replacement gas control
valve.

• Refit electrical connector to the rear of the gas control valve
assembly.

• Fit replacement gas control valve assembly into boiler.

• Reconnect gas pipes.

• Refit electrical connections in reverse order to removal.

GAS CONTROL
VALVE ASSEMBLY

GAS SAFETY VALVE

10028

SPARK IGNITION UNIT

Advertising