DUALAIR® HEATING AND COOLING UNITS INSTALLATION OPERATION AND SERVICE MANUAL
16.7 Ignition Control
IT IS IMPORTANT THAT ONLY THE CORRECT IGNITION CONTROL SPECIFIED FOR EACH MODEL TYPE IS USED WHEN REPLACING THESE ITEMS.
16.7.1 S4563C
This control is mounted at the electrical mounting plate. Pull out the 3 cable connectors.
Pull out ignition cable, ignition earth and flame probe cable noting their positions. Remove the screws. Refit in reverse. Ensure correct location of ignition and flame probe cables.
16.8 Fan Motor Removal
Belt Tension | Locknut | Jacking Screw |
Adjustment | (ensure tight) | Position |
(adjust both ends |
|
|
the same to ensure |
|
|
motor is parallel |
|
|
to fan case) |
|
|
Motor Fixing |
|
|
Bolts |
| Taper Lock |
| Pivot Bolts | |
| Screws | |
| (ensure tight) |
|
1.Disconnect the electrical connections at the contactor and pull the cable back to the fan motor.
2.Slacken the belt tensioning nuts and remove the drive belts.
3.Unscrew the motor mounting bolt. (motor is heavy, may need two people)
4.Remove the motor pulley by using a hexagonal key to remove the taper lock screws. Use one of these screws to fit into the centre jacking screw and tighten into this position to separate the taper lock bush and the pulley.
5.Replace in reverse order.
Use a straight edge to ensure both pulleys line up. Ensure the pulley fixing screws are tight and belt tension is correct (use new belts if required). Ensure motor rotation is correct.
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