Troubleshooting Chart; Glossary Of Terms - Sanborn Mfg P1682066.MN Manual Del Operador

Note: Troubleshooting problems may have similar causes and solutions.
PROBLEM
Excessive current draw
trips circuit breaker or
motor reset switch
Compressor stalls
Low discharge pressure
Compressor pump
knocking
Oil in discharge air
Overheating
Excessive belt wear
Compressor won't start in
cold temperatures
Air leaking through
bleeder valve after
compressor shuts off
CFM: Cubic feet per minute; a unit of measure of air flow.
PSI: Pounds per square inch; a unit of measure of air pressure.
Cut-in pressure: While the motor is off, air tank pressure drops as
you continue to use your accessory. When the tank pressure drops to
factory set low pressure point, the motor will restart automatically. The
low pressure at which the motor automatically restarts is called "cut-in"
pressure.
Cut-out pressure: When an air compressor is turned on and begins to
200-2966
TROUBLESHOOTING
POSSIBLE CAUSE
Low voltage/motor overload
Drive belt tension too tight
Restricted air passages
Low voltage to motor
Bad check valve
Seized pump
Air leaks
Leaking valves
Restricted air intake
Blown gaskets
Worn piston rings or cylinder
Loose motor pulley or pump
flywheel
Low oil level in pump crankcase
Excess carbon on valves or top
of piston
Worn piston rings or cylinder
Restricted air intake
Oil level too high
Poor ventilation
Dirty cooling surfaces
Restricted air passages
Pulley out of alignment
Improper belt tension
Pulley wobbles
Too much back pressure in tank
40W oil in crankcase
Compressor too cold
Dirty or defective check valve.

GLOSSARY OF TERMS

SOLUTION
Check that power supply is adequate and that compressor is on a
dedicated circuit.
Readjust belt tension.
Inspect and replace transfer tubes or the check valve, (see "To replace
or clean check valve" in the maintenance section).
Furnish adequate power.
Replace the check valve (see "To replace or clean check valve" in the
maintenance section).
Contact a qualified service center.
Tighten or replace leaking fittings or connections. Do not overtighten.
Contact a qualified service center.
Clean or replace air filter element(s).
Contact a qualified service center.
Contact a qualified service center.
Retighten pulley and flywheel. Check alignment.
Keep oil at proper level at all times.
Contact a qualified service center.
Contact a qualified service center.
Clean or replace the air filter element(s).
Reduce to proper level.
Relocate compressor to an area with cool, dry, well circulated air, at
least 12 in. from nearest wall.
Clean all cooling surfaces thoroughly.
Inspect and replace transfer tubes or the check valve, (see "To replace
or clean check valve" in the maintenance section).
Realign pulley with compressor flywheel.
Readjust.
Replace the pulley and check for a damaged crankshaft or flywheel.
Open petcock when starting motor.
Use full synthetic, non-detergent air compressor oil.
Move compressor to a warmer location.
Replace or clean the check valve (see "To replace or clean check
valve" in the maintenance section).
run, air pressure in the air tank begins to build. It builds to the factory set
high pressure point before the motor automatically shuts off, protecting
your air tank from pressure higher than its capacity. The high pressure at
which the motor shuts off is called "cut-out" pressure.
Well-ventilated: Means of providing fresh air in exchange for dangerous
exhaust or vapors.
Dedicated circuit: An electrical circuit reserved for the exclusive use of
the air compressor.
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