Gardner Denver GAF P Series, Operating And Service Manual

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SB-7-622 Page 17
SAFETY PRECAUTIONS
1. Do not operate blower with open inlet or outlet port.
2. Do not exceed specified vacuum or pressure limitations.
3. Do not operate above or below recommended blower speed range.
4. Blower is not to be used where non-sparking equipment is specified.
5. Do not operate without belt guard or coupling shield.
Do not exceed sheave or coupling manufacturer’s rim speed limit.
6. The blower and blower discharge piping may be extremely hot and cause skin burns on contact.
7. Prolonged exposure may require ear protection.
TROUBLE SHOOTING
No matter how well the equipment is designed and manufactured, there may be times when servicing will be
required due to normal wear, the need for adjustment, or various external causes. Whenever equipment needs
attention, the operator or repairman should be able to locate the cause and correct the trouble quickly. The
Trouble Shooting Chart below is provided to assist the mechanic in those respects.
PROBLEM POSSIBLE CAUSES SOLUTION
Knocking
1. Unit out of time.
2. Distortion due to improper mounting
or pipe strains.
3. Excessive pressure differential.
4.
Worn gears.
5. Worn bearings.
1. Re-time impellers
2. Check mounting alignment and relieve pipe
strains.
3. Reduce to manufacturer
’s recommended
pressure. Examine relief valve, re-set if
necessary.
4. Replace timing gears.
5. Replace bearings..
Excessive blower temperature.
1. Too much oil in gear case.
2. Too low operating speed.
3. Dirty air Filter.
4. Clogged filter or muffler.
5. Excessive pressure differential.
6. Worn impeller clearances.
7. Internal contact.
1. Reduce oil level.
2. Increase blower speed.
3. Clean or replace air filter
4. Remove cause of obstruction.
5. Reduce pressure differential
across the blower.
6. Replace impeller.
7. Correct clearances.
Impeller end or tip drag.
1. Insufficient assembled clearances.
2. Case or frame distortion.
3. Excessive operating pressure.
4. Excessive operating 1. Correct clearances.
2. Check mounting and pipe strain.
3. Remove cause.
4. Remove cause
Lack of volume.
1. Slipping belts.
2. Worn clearances.
3. Dirty air filter 1. Tighten belts.
2. Re-establish proper clearances.
3. Clean or replace air filter.
Excessive bearing or gear wear. 1. Improper lubrication. 1. Correct lubrication level. Replace dirty oil.
Loss of oil.
1. Headplate, gear case or drive cover
vents plugged.
2. Worn Seal.
1. Clean vents.
2. Replace seals.