Maintenance - GMC AC30G Instruction Manual

Trouble
Insufficient pressure or decreased
outlet capacity
Excessive oil consumption

Maintenance

1. After the first 10 hours of working, empty the crank
case of oil and refill with clean oil by removing the
crank case oil plug (left hand side of the crank case at
the bottom)
NOTE.
Use good quality compressor lubricating oil.
• SAE30 or L-DAB 100 over 10°C
• SAE10 or L-DAB 68 under 10°C
2. After each subsequent 500 hours of operation, again
drain the oil and refill the crank case with clean oil.
AC30G_AC40G 14
Troubleshooting continued
Possible cause
Motor running too slow
Dirty air filter cartridge
Leaking safety valve
Leaking pipe
Damaged gasket
Damaged or carbon coated valve seat
Damaged piston ring or cylinder
Oil level too high
Hole in oil filling cap (14) blocked
Piston ring and/or cylinder worn or
damaged
3. After each day of
operation, use the drain
cock (11) under the
tank to drain off any
condensate.
4. Regularly check the air
filter cartridge inside the
air filter assembly (17)
and replace the cartridge
when necessary.
14
Suggested Remedy
Use authorised service centre to check
and repair if necessary
Clean or replace the filter cartridge
Use authorised service centre to repair
or replace the switch
Use authorised service centre to check
and repair if necessary
Use authorised service centre to check
and repair if necessary
Use authorised service centre to check
and repair if necessary
Use authorised service centre to check
and repair if necessary
Maintain the oil at the correct level
Check and clean
Use authorised service centre to check
and repair if necessary
12/8/05, 4:49 PM