PAGE 13
PAGE 12
1. Disconnect power source then release all pressure from the
system before attempting to install, service, relocate or perform
any maintenance.
2. Never unscrew any connecting part when the tank is in pressure
condition.
3. Never disassemble any electrical part before disconnecting the
plug.
4. Never adjust the safety valve carelessly.
5. Never use the compressor in a place where voltage is too low
or too high. Never use electric wire more than 5m long with less
than the section of 1.5mm2, 16A.
6. Never disconnect the plug to stop compressor, set the switch
knob in position off instead.
7. If the release valve doesn’t work as motor stopped, find the
cause immediately so as not to damage motor.
8. Disconnect the plug to cut off power supply and open the outlet
valve.
9. Before restarting the motor by pushing the reset button, check
the air compressor carefully, find the causes of the trouble and
solve them, check the pressure in the air tank and make sure it is
under 0.8Mpa.
MAINTENANCE
TROUBLESHOOTING
PROBLEM
POSSIBLE CAUSE
ACTION
Motor unable to run,
running slow or getting
hot
1.
Fault in line or insufficient
voltage
2.
Power wire too thin or long
3.
Fault in pressure switch
4.
Fault in motor
5.
Sticking of main
compressor
1.
Check the line
2.
Replace the wire
3.
Repair or replace
4.
Repair or replace
5.
Check and repair
Sticking of main
compressor
Check crankshaft, bearing,
connecting rod, piston, pis-
ton ring, etc. and replace if
necessary
Shaking or abnormal
noise
1.
Connecting part loose
2.
Foreign body in the main
compressor
3.
Piston knocking the valve
seat
4.
Moving parts seriously
worn
1.
Check and retighten
2.
Check and clean away
3.
Replace with thicker
paper gasket
4.
Repair or replace
Pressure insufficient
or discharge capacity
decreased
1.
Motor running too slow
2.
Leakage of safety valve
3.
Leakage of discharge pipe
4.
Sealing gasket damaged
5.
Valve plate damaged,
stuck or carbon build up
6.
Piston ring and cylinder
worn or damaged
1.
Check and remedy
2.
Clean or replace the
cartridge
3.
Check and adjust
4.
Check and repair
5.
Check and replace
6.
Replace and clean
7.
Repair or replace
WWW.SGS-ENGINEERING.COM
1.
Moving parts damaged or
stuck by a foreign body
