Owner's manual

P R E L I M I N A RY

DIAPHRAGM REPLACEMENT

1. Disconnect power to the blower and wait 5 minutes before continuing with service on the unit.

2. Remove the top to the blower (4 Allen head or Phillips head screws attach the top to the base).

3. Remove one of the diaphragm covers (4 Phillips head screws attach the cover to the motor). The cover should easily pull out of

the base.

4. Remove the lock nut holding the diaphragm on (7/32” socket).

5. Replace diaphragm with new diaphragm. The diaphragm can only go on one way. The smaller screw hole spacing must go to the top

of the unit. Any other way and the screw holes will not line up.

6. Replace lock nut.

7. Replace diaphragm cover ensuring that the cover is seated back in the grommet on the base plate, and the four screw holes line up.

8. Repeat procedure for the other diaphragm.

9. Replace the top to the blower and tighten the 4 screws removed earlier.

10. Reconnect power to the unit.

Diaphram

Cover

(removed)

Diaphram

(removed)

Diaphram

Cover

Diaphram

Figure 24