Troubleshoot Tips - 15 Gal Kobalt Oilless Unit

Low pressure or not enough air or 
Compressor does not stop

1. Tank petcock is open
2. Prolonged excessive use of air
3. Compressor not large enough
   
   
   
4. Restricted check valve
5. Hole in air hose
6. Tank leaks
7. Blown seals
8. Valve leaks

1. Close petcock
2. Decrease amount of air used.
3. Check air requirement of accessory. If it is higher than CFM and pressure supplied by compressor, you need a larger compressor. Most accessories are rated at 25% of actual CFM while running continuously.
4. Remove and clean or replace.
5. Check and replace if necessary.
6. Immediately replace tank. DO NOT attempt to repair.
7. Replace any faulty seals.
8. Replace worn parts and reassemble with new seals.

Excessive starting and stopping, while not in use

1. Fittings leak

1. Check fittings with soapy water. Tighten or reseal leaking fittings.DO NOT OVERTIGHTEN.
2. Replace worn parts and reassemble with new seals.
3. Replace any faulty seals.

Air leaks from regulator, or regulator does not regulate pressure

1. Dirty or damaged regulator internal parts.

1. Replace regulator or internal parts.

Regulated pressure gauge reading drops when air accessory is being used

1. This is normal 
2. Compressor not large enough

1. If pressure drops too low, adjust regulator while accessory is used.
2. Check air requirement of accessory. If it is higher than CFM and pressure supplied by compressor, you need a larger compressor. Most accessories are rated at 25% of actual CFM while running continuously.

Circuit breaker trips (fuse blows) too often

1. Low voltage
2. Excessive wire length
3. Restricted air passages
4. Back pressure in pump head

1. Furnish adequate power. If using extension cord, try without. 
2. Consult electrician.
3. Contact authorized service center
4. Replace check valve, pressure switch bleeder valve.

Overheating

1. Poor ventilation
2. Dirty cooling surfaces.
3. Leaking valve

1. Relocate compressor to an area with cool, dry and well-circulated air.
2. Clean all cooling surfaces of pump and motor thoroughly.
3. Replace worn parts and reassemble with new seals

1. Low voltage

2. Defective pressure switch bleeder valve

1. Furnish adequate power
2. Replace pressure switch bleeder valve.

Pressure relief valve opens

1. Tank pressure exceeded normal operating pressure
2. Pressure switch stuck

1. Contact authorized service center.
2. Contact authorized service center.

Motor will not run

1. Tank pressure exceeds preset pressure switch limit
2. Motor overload protection has tripped
3. Fuse blown or circuit breaker tripped
   
   
   
   
   
   
   
   
4. Check valve stuck open
5. Pressure bleeder valve on pressure switch has not unloaded head pressure
6. Wrong wire gauge in extension cord
7. Loose electrical connections
8. Paint spray on internal motor parts
9. Possible defective motor

1. Motor will start automatically when tank pressure drops below kick-in pressure of pressure tank.
   
2. Let motor cool off and overload switch will automatically reset. This may take several minutes.
3. Check the following:
   -- Replace blown fuse or reset circuit breaker. Do not use fuse or circuit breaker with higher rating than specified for your branch circuit.
   -- Check for proper fuse; “Fusetron” type T is acceptable.
   -- Check for low voltage and proper extension cord size.
   -- Disconnect other applications from circuit. Operate compressor on a dedicated circuit.
4. Remove and clean or replace.
5. Bleed line by moving pressure switch lever to OFF Position before restarting. If bleeder valve does not open, replace bleeder valve.
6. Check for proper gauge and extension cord length
7. Contact authorized service center.
8. Have checked at service center. Do not operate compressor in the paint spray area
9. Have checked at service center.