ProMinent DULCOMETER PH-501 Assembly And Operating Instructions Manual page 857

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.
6. The blower and blower discharge piping may be extremely hot and cause skin burns on contact.
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.
Knocking
Excessive blower temperature.
Impeller end or tip drag.
Lack of volume.
Excessive bearing or gear wear.
Loss of oil.
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. 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. Insufficient assembled
clearances.
2. Case or frame distortion.
3. Excessive operating pressure.
4. Excessive operating
temperature.
1. Slipping belts.
2. Worn clearances.
3. Dirty air filter
1. Improper lubrication.
1. Headplate, gear case or drive
cover vents plugged.
2. Worn Seal.
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..
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.
1. Correct clearances.
2. Check mounting and pipe strain.
3. Remove cause.
4. Remove cause
1. Tighten belts.
2. Re-establish proper clearances.
3. Clean or replace air filter.
1. Correct lubrication level. Replace dirty
oil.
1. Clean vents.
2. Replace seals.
E-114