SECTION 16: R
EMOVAL
AND
R
EPLACEMENT
P
ARTS
41
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 Models 75 to 115
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
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.
Locknut
(ensure tight)
Belt Tension
Adjustment
Taper Lock
Screws
Jacking Screw
Position
Motor Fixing
Bolts
Pivot Bolts
(ensure tight)
(adjust both ends
the same to ensure
motor is parallel
to fan case)
