Industrial Air ILA5148080, Operator'S Manual

12 - ENG

200-2824

Note:  Troubleshooting problems may have similar causes and solutions.

TROUBLESHOOTING

PROBLEM                                           POSSIBLE CAUSE

SOLUTION

Excessive current draw 

trips circuit breaker or 

motor reset switch

Low voltage/motor overload

Check that power supply is adequate and that compressor is on a 

dedicated circuit. 

Drive belt tension too tight

Readjust belt tension.

Restricted air passages

Inspect and replace transfer tubes or the check valve, (see “To replace 

or clean check valve” in the maintenance section). 

Compressor stalls

Low voltage to motor

Furnish adequate power.

Bad check valve

Replace the check valve (see “To replace or clean check valve” in the 

maintenance section).

Seized pump

Contact a qualified service center.

Low discharge pressure

Air leaks

Tighten or replace leaking fittings or connections. Do not overtighten.

Leaking valves

Contact a qualified service center.

Restricted air intake

Clean or replace air filter element(s).

Blown gaskets

Contact a qualified service center.

Worn piston rings or cylinder

Contact a qualified service center.

Compressor pump 

knocking

Loose motor pulley or pump 

flywheel

Retighten pulley and flywheel. Check alignment.

Low oil level in pump crankcase Keep oil at proper level at all times.
Excess carbon on valves or top 

of piston

Contact a qualified service center.

Oil in discharge air

Worn piston rings or cylinder

Contact a qualified service center.

Restricted air intake

Clean or replace the air filter element(s).

Oil level too high

Reduce to proper level. 

Overheating

Poor ventilation

Relocate compressor to an area with cool, dry, well circulated air, at 

least 12 in. from nearest wall.

Dirty cooling surfaces

Clean all cooling surfaces thoroughly.

Restricted air passages

Inspect and replace transfer tubes or the check valve, (see “To replace 

or clean check valve” in the maintenance section). 

Excessive belt wear

Pulley out of alignment

Realign pulley with compressor flywheel.

Improper belt tension

Readjust.

Pulley wobbles

Replace the pulley and check for a damaged crankshaft or flywheel.

Compressor won’t start in 

cold temperatures

Too much back pressure in tank Open petcock when starting motor.
40W oil in crankcase

Use full synthetic, non-detergent air compressor oil.

Compressor too cold

Move compressor to a warmer location.

Air leaking through 

bleeder valve after 

compressor shuts off

Dirty or defective check valve.

Replace or clean the check valve (see “To replace or clean check 

valve” in the maintenance section).