CAMCORP Blower Package with M-D Pneumatics Blower - Manual (Page 20)

TROUBLESHOOTING
Although EQUALIZER ® blowers are well designed and manufactured, problems may occur due to normal wear and the need
for readjustment. The chart below lists symptoms that may occur along with probable causes and remedies.
SYMPTOM PROBABLE CAUSE REMEDIES
Loss of oil. Gear housing not tightened properly.
Lip seal failure.
Insufficient sealant.
Loose drain plug.
Tighten gear housing bolts.
Disassemble and replace lip seal.
Remove gear housing and replace sealant. (See Disassembly
and Inspection section on page 10)
Tighten drain plug.
Excessive
bearing or
gear wear. Improper lubrication.
Excessive belt tension.
Coupling misalignment.
Correct oil level. Replace dirty oil. (See Lubrication section on
page 6)
Check belt manufacturer’s specifications for tension and adjust
accordingly.
Check carefully, realign if necessary.
Lack of
volume. Slipping belts.
Worn lobe clearances.
Speed too low.
Obstruction in piping.
Check belt manufacturer’s specifications for tension and adjust
accordingly.
Check for proper clearances (See Assembly Clearances on page
17, 19 or 21 as applicable to the blower model)
Increase blower speed within limits.
Check system to assure an open flow path.
Knocking. Unit out of time.
Distortion due to improper mounting or pipe
strains.
Excessive pressure differential.
Worn gears.
Re-time.
Check mounting alignment and relieve pipe strains.
Reduce to manufacturer’s recommended pressure.
Examine relief valve and reset if necessary.
Replace timing gears (See Disassembly and Inspection section
on page 10)
Excessive
blower
temperature. Too much or too little oil in gear reservoir.
Too low operating speed.
Clogged filter or silencer.
Excessive pressure differential.
Elevated inlet temperature.
Worn lobe clearances. Check oil level. (See Lubrication section on page 6)
Increase blower speed within limits.
Remove cause of obstruction.
Reduce pressure differential across the blower.
Reduce inlet temperature.
Check for proper clearances (See Assembly Clearances on page
17, 19 or 21 as applicable to the blower model)
Rotor end or
tip drag. Insufficient assembled clearances.
Case or frame distortion.
Excessive operating pressure.
Excessive operating temperature.
Correct clearances (See Assembly Clearances on page 17, 19 or
21 as applicable to the blower model)
Check mounting and pipe strain.
Reduce pressure differential.
Reduce pressure differential or reduce inlet temperature.
Vibration. Belt or coupling misalignment.
Lobes rubbing.
Worn bearings or gears.
Unbalanced or rubbing lobes.
Driver or blower loose.
Piping resonance.
Check carefully, realign if necessary.
Check cylinder for hot spots, then check for lobe contact at these
points. Correct clearances (See Assembly Clearances on page
17, 19 or 21 as applicable to the blower model)
Check condition of gears and bearings; replace if necessary.
Possible buildup on casing or lobes, or inside lobes. Remove
buildup and restore clearances.
Check mounting and tighten if necessary.
Check pipe supports, check resonance of nearby equipment,
check foundation.
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