4. Pull | off | thermostat knob (C, Fig.11) and knob (D, Fig.11) of safety device |
(E, | Fig. | 11). |
5.Unscrew union nut (F, Fig.11) of
6.Remove three cable
7.Unscrew
8.Unscrew thermostat (H, Fig.11) from support bracket (K, Fig.11) ( 2 screws ).
9. Unscrew two clips (L, Fig.11) from capillary tube (M, Fig.11).
1 0 . Remove
11.Dismantling of thermostat (H, Fig.11) : Unscrew flame failure safety device (E, Fig.11) with
(N, Fig.11) from thermostat.
12.Dismantling of the flame failure safety device (E, Fig.11) : Unscrew flame failure safety device from thermostat (H, Fig.11). Then unscrew thermo- current adapter (J, Fig.11) from the flame failure safety device.
13.For reassembly, proceed in the reverse sequence of dismantling.
CAUTION: Coat threaded unions at the connection/thermostat and thermostat/flame failure safety device with Loctite 572 to ensure good sealing.
Be careful not to get any Loctite inside any parts.
5. Replacing the | ||
_____ _____ | ____ | ____ |
1.Unscrew
2.Unscrew
6. Replacing | the | thermocouple (I, Fig. 11) |
_ _ _ _ _ _ _ _ _ _ |
| ___ |
1.Unscrew
2.Unscrew clip (0, Fig.11) for
3.Unscrew the three screws of the mounting plate (A, Fig.12) from the bottom part of
4.Unscrew
5.Bend new thermocoupling (I, Fig. 11+12) to shape of old one. For reassemhly, proceed in the reverse sequence of dismantling.
IMPORTANT: The gasket (C, Fig.12) between the lower part of the burner and the mounting plate must be replaced by a new one and carefully positioned to ensure that the burner is properly sealed.
7. Replacement of spark ignitor with cable (B,Fig. 12)
1. Remove ignition cable (P, Fig.11) from piezo ignitor (Q, Fig.11).
2.Unscrew the one screw (A3, Fig.12) from the spark ignitor, withdraw spark ignitor and replace it by a new one. Reassemble in the reverse order.