KNOVA KN COM-50L Manual De Instrucciones página 8

TROUBLESHOOTING CHART
SYMPTOM
Compressor
will not run
Motor hums
but cannot
run or runs slowly
Flow blows/circuit
breaker trips
repeatedly
Thermal overload
protector cuts
out repeatedly
Knocks, rattles,
and/or excessive
vibration
POSSIBLE CAUSES
1. Switch in OFF position
2. No electrical power at wall outlet
3. Compressor has reached
automatic shutoff pressure
4. Motor overloaded
5. Pressure switch bad
1. Defective check valve
2. Defective unloader valve
(on pressure switch)
3. Low voltage
4. Loose electrical connections
5. Wrong gauge wire or length
of extension cord
6. Defective motor capacitor
7. Shorted or open motor winding
1. Incorrect fuse size,
circuit overloaded
2. Wrong gauge wire or length
of extension cord
3. Defective check valve
4. Defective unloader valve
(on pressure switch)
5. Defective motor capacitor
6. Motor shorted or seized
1. Low voltage
2. Wrong gauge wire or
length of extension cord
3. Clogged intake filter
4. Lack of proper ventilation/room
temperature too high
5. Defective check valve
6. Defective unloader valve
(on pressure switch)
7. Compressor valves failed
1. Loose mounting bolts
2. Tank not level
3. Cylinder or piston
is worn/scored
CORRECTIVE ACTION
1. Make sure compressor is plugged in and switch is ON.
2. Check circuit breaker or fuse at electrical panel.
3. Release air from tank until compressor
restarts automatically.
4. Allow compressor to cool for approximately
30 minutes. Make sure compressor is run in
a clean, well-ventilated area.
5. Replace pressure switch.
1. Repair or replace.
2. Repair or replace.
3. Check voltage at wall outlet with voltmeter.
4. Check all electrical connections.
5. Check extension cord chart for
proper extension cord usage.
6. Replace capacitor.
7. Replace motor
assembly.
1. Check for proper fuse. Use time delay fuse.
Disconnect other electrical appliances from circuit or
operate compressor on its own branch circuit.
2. Check extension cord chart for proper extension
cord usage.
3. Repair or replace.
4. Repair or replace.
5. Replace capacitor.
6. Replace motor
assembly.
1. Check voltage at wall outlet with voltmeter.
2. Check extension cord chart for proper
extension cord usage.
3. Clean or replace filter.
4. Move compressor to well-ventilated area.
5. Repair or replace.
6. Repair or replace.
7. Replace valve
assembly
1. Tighten bolts.
2. Use sturdy wedge/object
to bring tank to level position.
3. Replace or repair as necessary.
7
DANGER
Do not disassemble
check valve with air in tank;
bleed tank
DANGER
Do not disassemble
check valve with air in tank;
bleed tank
DANGER
Do not disassemble
check valve with air in tank;
bleed tank