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6.
Servicing
It is essential that at least once a year, preferably before the heating season, the appliance is serviced by a
qualified person. In exceptionally dirty conditions, such as may occur in a foundry, more frequent servicing may
be desirable.
IMPORTANT:
1. Do not rest anything, especially ladders, against the appliance.
2. Gas and electrical supplies must be isolated before commencing servicing work or replacement of
components.
3. Unless instructed to the contrary, re-assemble components in reverse order.
4. Check all joints for gas soundness after carrying out any servicing of the appliance.
5. On completion of a service/fault finding task which has required the breaking and re-making of electrical
connections, the following checks, using a multimeter must be made.
5.1 Earth continuity check.
5.2 Polarity
check.
5.3 Resistance to earth check.
6. Following any or all servicing operations, the service engineer responsible shall re commission the
appliance in accordance with the instructions provided. (see section 5. of this manual)
6.1
Ignition Electrode
6.1.1
Disconnect the black HT ignition lead from the electrode, by gently pulling the plastic shroud from the Raja
connector of the electrode.
6.1.2
Unscrew the two M4 screws securing the electrode to the flue collar assembly and withdraw the electrode.
6.1.3
Remove any foreign matter from the electrode rod and earth strap and check that the spark gap is
3.5mm. If the electrode is badly oxidised, replace the electrode (see section 7.1).
6.1.4
Upon re-assembly, ensure that the HT lead connector is securely attached to the electrode.
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
6.3.1
Check the venturi opening to be sure it is clean. If there is any evidence of dirt accumulation in the venturi, it
should be removed.
6.4
Injector
6.4.1
Remove the injector(s) from the manifold, 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 appliance manifold, inspect the wiring and connections
inside the junction box (attached to the control valve). To open the junction box, first slacken the gland nut
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.
Содержание ERP10
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Страница 7: ...Page 5 of 20 Fig 1 Disclaimer Valve and control assemblies will differ on European approved heaters...
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