Troubleshooting Guide - FScurtis FCTHEC47H9X-A Serie Instrucciones De Funcionamiento Y Manual De Piezas

TROUBLESHOOTING GUIDE

SYMPTOM
Low discharge pressure
Overheating
Excessive belt wear
Unit stalls
Excessive noise (knocking)
POSSIBLE CAUSE(S)
1. Air leaks
2. Leaking valves
3. Restricted air intake
4. Slipping belts
5. Blown gaskets
6. Low compression
1. Poor ventilation
2. Dirty cooling surfaces
1. Pulley out of alignment
2. Belt too loose or too tight
3. Belt slipping
4. Pulley wobbles
1. Low engine idle
2. Improper lubrication
3. Low oil level
4. Defective unloader valve
1. Loose engine or compressor pulley
2. Lack of oil in crankcase
3. Worn connecting rod
4. Worn piston pin bushing
5. Worn bearings
6. Piston hitting the valve plate
7. Noisy check valve
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. Remove head and inspect for valve breakage,
weak valves, scored valve seats, etc. Replace
defective parts and reassemble.
time the head is removed.
3. Clean the air filter element.
4. Loosen engine clamping bolts and move the
engine in a direction away from the compressor,
being sure that the engine pulley is perfectly
aligned with the flywheel. Tighten engine
clamping bolts. The belt should deflect about 1/2
inch under 5-lbs of force. Do not "roll" belts over
pulleys.
5. Replace any gaskets proven faulty on inspection.
6. Low pressure can be due to worn rings and
cylinder walls. Correction is made by replacing
the rings, cylinders, and pistons as required.
1. Relocate the compressor to an area where an ample
supply of cool, clean, dry and well-circulated air is
available.
2. Clean the cooling surfaces of pump and motor-engine.
1. Realign engine pulley with compressor pulley
2. Adjust tension (See Drive Belt Section).
3. Adjust tension or replace belt (See Drive Belt
Section).
4. Check for worn crankshaft, keyway or pulley bore
resulting from running the compressor or motor
with loose pulleys. Check for bent pulleys or bent
crankshaft.
1. Increase idle, refer to engine manual for details
2. See Lubrication section of manual.
3. Check oil level. Fill if necessary
4. Replace
1. 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.
4. Remove piston assemblies from the compressor
and inspect for excess wear. Replace excessively
worn piston pin or pistons, as required.
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.
10
Be sure that the old head gasket
is replaced with a new one each