
Page 17 of 24
6.2
Flame Sensor Probe
6.2.1
Disconnect the grey flame sensor lead from the sensor probe by gently pulling the connector, using pliers.
6.2.2
Unscrew the two M4 screws, securing the sensor probe to the flue collar assembly and withdraw the probe.
6.2.3
Remove any foreign matter from the sensor rod and check the condition of the ceramic insulator. If the rod is
badly oxidised or the ceramic insulator cracked, replace the sensor probe. (see section 7).
6.2.4
Upon re-assembly, ensure that the grey sensor lead connector is securely attached to the probe.
6.3
Venturi Fabrication
6.3.1
Check that the venturi is clean. If there is any evidence of dirt accumulating in the venturi, remove the
venturi before cleaning to avoid getting dirt inside the plenum body.
6.3.2
To remove the venturi, first unscrew the four M4 screws securing the elbow flange connector to the
control valve outlet port and remove the control valve assembly complete.
6.3.3
Unscrew the four M4 screws securing the Venturi casting to the plenum body end panel and carefully
withdraw the venturi fabrication from the plenum body.
6.3.4
Clean by use of a stiff brush to remove any deposits.
6.4
Injector
6.4.1
Remove the injector from the venturi casting, inspect and clean as necessary with a soft bristle brush.
DO NOT DAMAGE THE INJECTOR ORIFICE BY USE OF SOLID OBJECTS.
6.5
Electrical Wiring
6.5.1
With the control valve assembly removed from the venturi casting, (see section 6.3.2) inspect the wiring and
connections inside the junction box (attached to the control valve). To open the junction box, first slacken the
gland nut (2 gland nuts on SRP30 Hi/Lo) located in the junction box below the control valve, then unscrew the
four screws securing the cover of the junction box. Carefully lift away the cover. Replace any damaged wiring
as necessary.
6.5.2
Unscrew the fastener securing the cover of the ignition control and lift off the cover. Check that the
electrical connections are sound and the wiring undamaged. Replace any damaged wiring as necessary.
6.6
Reflector
6.6.1
Dirt accumulated on the outer surfaces of the reflector should be brushed off and the reflective surfaces
cleaned with a soft cloth and detergent in water. A mild non-abrasive metal polish may be used where extra
discolouration has occurred.
6.7
Emitter Assembly (ceramic plaque)
6.7.1
Ignite the appliance and observe the colour of the emitter surface. If there are pronounced dark areas on the
surface, it probably indicates an accumulation of dirt on the inside surface of the ceramic plaque.
IMPORTANT:
DO NOT DIRECT AN AIR LINE AT THE CERAMIC PLAQUE SURFACE AS IT MAY DAMAGE
THE CERAMIC TILES OR DISLODGE THE HIGH TEMPERATURE GASKET MATERIAL FROM AROUND
THE TILES.
6.7.2
To remove any dirt accumulated on the inside surface of the ceramic plaque or to replace the emitter assembly
in the case of cracked tiles, it will be necessary to disconnect the appliance and carry out the work at low level.
6.7.3
Disconnect the electrical supply to the appliance by unscrewing the M3 screw securing the electrical supply
socket to the 4 pin plug attached, to the junction box. (secured to the control valve). Disconnect the gas supply
pipe from the control valve by unscrewing the four M4 screws securing the straight flange to the control valve
inlet port. Ensure that the 'O' ring in the flange is secure.
Содержание SRP 08
Страница 2: ......
Страница 25: ...Page 23 of 24 NOTES...
Страница 26: ...Page 24 of 24 07 05 GB IE ES PT 484S...