Powermate 200-2143 Operator's Manual page 25

PROBLEM
Motor hums but won't
turn
Motor doesn't hum
Magnetic starter coil
clicks
Coil chatters on & off
Coil does not click
Stops shortly after
starting or after running
a while
Stops shortly after running
Stops after running a while
*NOTE: LOW VOLTAGE - Low voltage can cause a multitude of problems. The most common cause of low voltage is when the wire size (gauge)
supplying power to the compressor is too small. The longer the run of wire the larger the diameter must be to overcome the inherent voltage loss
caused by the wire resistance. The supply voltage at the main panel could also be low as supplied by your local power company, or you may have
too many other pieces of equipment running off the same line. Your local electrician should be contacted to evaluate and correct the problem
according to the National Electrical Code.
200-2143
TROUBLESHOOTING THE MAGNETIC STARTER
POSSIBLE CAUSE
COMPRESSOR WON'T RUN
Fuse blown in main panel if
3-phase system
Low voltage to motor
Compressor starting under
pressure
Power leads to motor
disconnected
Motor burned out
Voltage to coil too low to pull it in
Overload tripped out
Main power disconnected or
fuse blown
Pressure switch contacts stuck
open
Defective starter
COMPRESSOR RUNS AND THEN STOPS
Compressor overloading
causing motor overload
Low voltage causing motor
overload
Compressor or starter
overheating
SOLUTION
Check and replace fuse in main panel.
Motor wired for wrong voltage.*
Check head unloader valve system.
Check wiring and reconnect as needed.
Replace motor.
See note.*
Press "reset" on magnetic starter.
Reconnect or replace fuse.
Check and free up or replace pressure switch.
Replace starter assembly.
Inspect compressor valves and tank valves for carbon build-up.
See note.*
Ventilate compressor room area or remove starter from
compressor and mount on wall.
25