Troubleshooting Chart - Campbell Hausfeld VH300300 Manual De Instrucciones De Operación Y Lista De Partes

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Operating Instructions and Parts List

Troubleshooting Chart

Symptom
Low discharge pressure
Pump overheating causes
air filter to melt
Excessive noise (knocking)
Large quantity of oil in
the discharge air
NOTE: In an oil lubricated
compressor there will
always be a small amount
of oil in the air stream.
Water in discharge air /
tank
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Possible Cause(s)
1. Air leaks
2. Slipping belts
3. Air demand exceeds pump capacity
4. Blown gaskets
5. Leaking valves
6. Restricted air intake
7. Low compression
Broken valves/blown gasket
1. Loose motor or compressor pulley
2. Lack of oil in crankcase
3. Worn connecting rod
4. Worn piston pin bores
5. Worn bearings
6. Piston hitting the valve plate
7. Noisy check valve in compressor
system
1. Worn piston rings
2. Compressor air intake restricted
3. Excessive oil in compressor
4. Wrong oil viscosity
Normal operation. The amount of
water increases with humid weather
Corrective Action
1. Listen for escaping air. Apply soap solution to all fittings and
connections. Bubbles will appear at points of leakage. Tighten or
replace leaking fittings or connections
2. Loosen motor clamping bolts and move the motor in a direction
away from the compressor, being sure that the motor pulley is
perfectly aligned with the flywheel. Tighten motor clamping bolts.
The belt should deflect about 1/2 inch under 5-lbs of pressure. Do
not "roll" belts over pulleys
3. Reduce air demand or use a compressor with more capacity
4. Replace any gaskets proven faulty on inspection
5. Remove head and inspect for valve breakage, misaligned valves,
damaged valve seats, etc. Replace defective parts and reassemble.
Install a new head gasket
each time the head is removed
6. Clean the air filter element
7. Low pressure can be due to worn rings and cylinder walls.
Correction is made by replacing the rings, cylinders, and pistons as
required
Replace valve or install new gasket
1. Loose motor or compressor pulleys are a very common cause of
compressors knocking. Tighten pulley clamp bolts and set-screws
2. Check for proper oil level; if low, check for possible damage to
bearings. Dirty oil can cause excessive wear
3. Replace connecting rod; maintain oil level and change oil more
frequently
4. Remove piston assemblies from the compressor and inspect for
excess wear. Replace excessively worn piston pin or pistons, as
required; maintain oil level and change oil more frequently
5. Replace worn bearings and change oil
6. Remove the compressor head and valve plate and inspect for
carbon deposits or other foreign matter on top of piston. Replace
head and valve plate using new gasket
7. Replace check valve.
Do not disassemble check
valve with air pressure in tank
1. Replace with new rings. Maintain oil level and change oil more
frequently.
2. Clean filter. Check for other restrictions in the intake system.
3. Drain down to full level.
4. Use Mobil 1
®
10W-30
1. Drain tank more often. At least daily.
2. Add a filter to reduce the amount of water in the air line.
6

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