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My blower isn't moving as much air as I anticipated. Why?
In-Line Duct Blowers
a) Your system resistance could be too high. Check system for proper operation of backdraft or control dampers or obstruction in duct work. b) The blower wheel may be running backwards. Correct, rotation should be clockwise and correspond to the rotation decal found on the unit. c) You may have excessive buildup of material on your wheel. Clean wheel. d) The wheel may be improperly aligned. Center wheel on inlet.
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Why is my blower so noisy?
In-Line Duct Blowers
a) The bearings may be loose or defective. Tighten or replace bearings. b) There may be foreign material inside your bearings. Replace bearings. c) The motor pulley and/or fan pulley may not be tightened on the shaft. Check alignment and tighten setscrews and/or bushings. d) The wheel may be improperly aligned and rubbing. Center wheel on inlet. e) The belt tension may be too loose or too tight. Adjust belt tension. f) Belts may be worn, oily or dirty. Clean or replace belts. g) The pulleys may not be aligned correctly. Re-align pulleys. h) There may be foreign objects in wheel or housing. Remove, check for damage or unbalance. i) The wheel may be out of balance caused by excessive dirt and grease buildup. Clean wheel to remove buildup.
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Why is my in-line duct blower not working?
In-Line Duct Blowers
a) You may have a blown fuse or breaker. Replace or repair. b) Motor may be defective. Replace or repair. c) Fan my be incorrectly wired. Shut power OFF and check wiring for proper connections. d) The pulleys may be out of alignment or loose. Check alignment and tighten. e) The electricity may be turned off. Contact local power company.
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Why is my motor overloading and shutting off?
In-Line Duct Blowers
a) The wheel RPM may be too high. Check that the drives are correct, increase turns open on VP pulley. b) The motor may have a shorted motor winding. Replace motor. c) The wheel may be rotating in the wrong direction. Check that motor is wired correctly. d) The power source may be over/under line voltage. Contact your local power company. e) The belt may be slipping. Tighten belt, match belt to pulley.
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