ALKOTA 5305A, Руководство по обслуживанию, Страница: 37 / 56

33
Oil Burner
22
Oil Burner Maintenance
Blower Fan Replacement
1. Shut off power to the burner and disconnect wires.
2. Loosen the two screws securing blower motor and fan to the housing.
3. Remove the blower.
4. Install the blower onto the shaft and place .030 feller gauge on the motor as shown, sliding blower
until it contacts feeler the gauge. Rotate wheel until set screw is centered on the flat of the motor
shaft. Tighten set screws onto motor shaft.
5. Reinstall motor and blower assembly.
6. Reconnect wires and turn on power.
Transformer Test
1. Remove burner junction box cover.
2. Turn on burner and make sure ignition transformer is receiving rated voltage.
3. Turn off burner.
4. Loosen screw and swing transformer away from burner gun assembly.
5. Turn on burner.
6. Short the high voltage terminals.
7. Open gap by drawing screwdriver away from one electrode while touching the other.
8. The spark should jump between 5/8 inches and ¾ inches, if it doesn’t jump, replace the
transformer.
9. Turn burner off.
10. Partially close transformer. Check if buss bars align and contact transformer electrodes. If buss
bars do not contact, see Buss Bar Alignment.
11. Close transformer, reposition retainer clip and tighten screw.
WARNING
Use screwdriver
with a well insulated
handle to avoid
shock.
Buss Bar Alignment
1. With burner off, loosen screw and swing the transformer away from burner gun assembly.
2. Inspect the buss bars and transformer electrodes for pitting or corrosion.
3. Partially close the transformer. Check if the buss bars contact and are in alignment with
transformer electrodes.
4. Proper adjustment is obtained by gently bending the buss bars until they spring against, parallel,
and are in full contact with the transformer electrodes.
5. With buss bars aligned, carefully close and fasten the transformer.
Blower Fan Replacement, Transformer Test,
Bus Bar Alignment