NorthStar 4592900, Owner'S Manual

Page: 13 / 26

13
Maintenance & Repair
WARNING: Maintenance hazards
ALWAYS disconnect, lock out and tag the main power supply and then release air pressure from the receiver tank before
cleaning, adjusting, or servicing the compressor pump. Make sure all guards and shields are replaced before re-starting.
Maintenance Schedule Summary
Item Frequency
Inspect safety/relief valves Weekly
Check pump oil level Weekly
Inspect air filter 
Weekly

Replace every 12 months or 1000 hours of
use
Inspect for air leaks Monthly
Change pump oil/ Clean magnetic drain plug 
After first 50 hours of use

Every 3 months or 500 hours of use after
that
Check drive belt tension and alignment Monthly
Dust/debris removal Monthly
See detailed instructions for each maintenance item below.
Detailed Instructions – Maintenance & Repair
NOTICE
Dispose of used motor and pump oil in a manner that is
compatible with the environment and in accordance
with local, state, and federal laws and regulations.

Take used oil in a sealed container to your local
recycling center or service station for reclamation.

Do not throw it in the trash, pour it on the ground, or
pour it down a drain.
No Modifications. Never modify or alter the
compressor pump in any way. Modifications can create
serious safety hazards and will void the warranty.
Inspect Safety/Relief Valve
This valve should be inspected and tested on a weekly
basis.
The safety valve automatically releases air if the
tank pressure exceeds the preset maximum.

Check the safety/relief valve by pulling the rings.
It is spring loaded and should not be stuck but
come out about ¼” and then snap back into
position when released.

Replace safety/relief valves that do not operate
freely with a valve of the same pressure rating.
WARNING: Safety/Relief valve hazards
If the safety/relief valve does not work properly, over-
pressurization may occur causing air tank rupture or
explosion. Occasionally pull the ring on the safety valve
to make sure the safety valve operates freely. If the
valve is stuck or does not operate smoothly, it must be
replaced with a valve having the same pressure rating.
Inspect Air Filter
Inspect the compressor pump’s air filter on a weekly
basis. A dirty air filter will not allow the air compressor
pump to operate at full capacity.

Clean air filter if dirty and restricted air flow.

Replace the air filter every 12 months or 1000
hours.
Note: Do not operate with the air filter removed.
Keep Compressor Clean
Do not allow air intakes to become blocked. If dust or
debris accumulates in the compressor, clean with a
damp cloth or soft bristle brush.
Note: Do not spray compressor with a garden hose or
pressure washer. Water may enter the compressor
and cause damage to the motor and pump.