12
Note
: Care should be taken not to damage electrode
Important:
if spark is present but burner will not light, ensure gas is present and dimensions are as
(Fig 12)
3.8
OVEN THERMOSTAT
Remove control knobs and fascia panel as detailed in Section 3.2.1.
Remove hob fitments as detailed in Sections 3.2.2 and 3.2.3 as appropriate.
Undo thermocouple connection at thermostat rear. Disconnect oven burner pipe.
From inside oven, release clips that secures thermostat capillary to oven side wall. Undo fixings
that secure thermostat to manifold.
Remove thermostat by carefully feeding capillary and phial through crown plate.
Replace all parts in reverse order. Renew manifold gasket if necessary.
3.8.1 Thermostat Calibration
The thermostat should not be calibrated. If temperature is outwith specified tolerances, replace
thermostat and return faulty thermostat to Falcon Quality Department.
3.9
OPEN TOP and SOLID TOP GAS TAPS
Note -
Plugs and bodies are machined in pairs and are therefore not interchangeable.
Always clean one tap at a time.
3.9.1 Service - Isolate from gas supply.
Remove control knobs and fascia panel as detailed in Section 3.2.1.
Remove fixings from front of tap body. Withdraw spindle and niting arrangement to allow plug to be
eased out. Clean gas tap plug with a soft rag and regrease using an approved high temperature
lubricant. Take care not to over-grease as surplus may cause gasway blockage.
Replace parts in correct order and check gas tightness.
3.9.2 Removal – isolate from gas supply.
Remove control knobs and fascia panel as detailed in Section 3.2.1.
Remove hob fitments as detailed in Sections 3.2.2 and 3.2.3 as appropriate.
Disconnect thermocouple connection at gas tap rear.
3.10 GOVERNOR
(Natural Gas Models Only)
The governor supplied is maintenance free. Check that blue dust cap is covering vent and in good
condition as this protects the breather hole.
When checking for gas leaks around governor, be aware that unburned gas may be vented
occasionally to release pressure on diaphragm. This should not be confused with a gas leak.
3.11 FAULT CHECK LIST
If a flame is not established on any burners
(hob or oven)
, follow this check list.
1. Check mains gas is ON.
2. Check pressure at test point to ensure gas is flowing to unit.
3. If pressure does not register then check governor is fully operational or check for line blockage.
4. If gas is present, check burner injector for blockage.
5. If injector is OK then check FFD is engaging and passing gas.
6. OVEN ONLY - Check for spark at spark electrode.
7. OVEN ONLY - If there is no spark then check spark dimensions (fig12) and HT lead
connections. Also check igniter.
8. OVEN ONLY – Note: Spark may be present but will still not light burner unless dimensions relative to
burner are as Fig 12.
Note:
If after adjusting the electrode to the correct dimensions
(fig 12),
a spark is not present, or is
present but will not light burner, check the following:
Check Spark lead and return earth wire connections at piezo spark igniter body.
Check for clean contact between burner fixing feet and oven base, using spring washers under
screw heads.
