Troubleshooting guide

11
PREPARATION FOR USE (cont'd)
1. Place air compressor on a level surface.
2. Remove the pump oil fill plug and slowly add
compressor oil to the crankcase of the pump
until it is even with the top of the oil fill hole (no
lower than 3/8” from the top at any time). Fill with
oil slowly. If oil is added too quickly, it will overflow
and appear to be full.
When Required
Compressor break-in procedures are required:
1. Before the air compressor is used for the first
time.
2. When the check valve is replaced.
3. When a complete compressor pump is replaced.
Break-In Procedure
Perform the following procedures to break-in the air
compressor:
Serious damage to the compressor pump may
result if the following break-in procedures are
not closely followed.
1. To prevent pressure from building up in the air
tanks during this break-in period, you must open
the unit’s unloader valve (Refer to Figure 1 for
location and Figure 3 for operation). To do this, lift
the steel ring on the unloader valve, rotate the ring
a quarter turn (90 degrees), then slowly lower the
ring so it rests crossways on the slot at the top of
the valve, but not in the slot.
The air compressor unit is top heavy. Make
sure the unit is in a stable position and will not
tip before starting the electric motor.
2. Open the pressure regulator (Refer to Figure 1 for
location) by rotating the knob clockwise to its
built-in stop.
3. Verify that the “OFF/ON-AUTO” lever on the
pressure switch is in the “OFF” position.
4. Insert the power cord of the electric motor into a
120 VAC, 60 Hertz, single phase,
GROUNDED outlet.
5. Verify that the steel ring on the unloader valve is
pulled up and positioned crosswise to the slot at
the top of the unloader valve to prevent tank
pressure buildup.
6. Move the “OFF/ON-AUTO” lever on the pressure
switch to the “ON-AUTO” position. The electric
motor will start.
3. Replace the pump oil fill plug and tighten.
NOTE
Drain and refill the pump crankcase after the
first 100 hours of operation.
7. Run the air compressor for 30 minutes to seat the
rings and lubricate all the internal surfaces. Make
sure there is no pressure build up in the tank
by observing the reading on the tank pressure
gauge.
8. After completing Step 7, lift the steel ring on the
unloader valve and rotate it 1/4 turn (90 degrees),
allowing the spring tension to pull the ring into the
slot at the top of the unloader valve (Refer to
Figure 3).
9. Close the pressure regulator (rotate it counter-
clockwise) to build pressure in the air tanks.
10. When the air tanks are pressurized, the safety
valve will hiss loudly, the tank pressure gauge will
indicate the pressure available in the tanks, and
the electric motor will stop. The pressurization of
the air tanks will be adjusted automatically by the
settings of the “cut in” and “cut out” switches,
which will start and stop the electric motor as
required. When the pressure in the tank drops to
the “cut in” value, the electric motor will “cut in”
(Start) and operate the compressor to pressurize
the tanks. When the pressure in the tank
increases to the “cut out” value, the electric
motor will “cut out” (Stop).
11. The pressure regulator can now be adjusted to
the required pressure for operating your air tools,
usually 90 PSIG. Compressed air will be available
from the unit’s outlet fitting until it is used up or
bled off.
OPEN
VALVE
MOUNTING
UNLOADER
VALVE
STEEL
RING
CLOSED
UNLOADER
VALVE
VALVE
MOUNTING
STEEL
RING
Figure 3 – Unloader Valve Positions
BREAK-IN PROCEDURES