Use and Care Manual

Operating Instructions
4
3. Open outlet valve and allow
pressure in tank to drop to lower
limit of control valve which is preset
at 145 psi (2 stage) or 90 psi (single
stage). At this point the control
valve should close allowing the
compressor to begin loading the
tank instead of discharging through
the breather bushing.
4. Do not alter pressure settings on
control valve or governor setting
on engine. If lower pressures are
required this should be accomplished
with a separate pressure regulator
after the outlet valve. Compressor
has a maximum operating pressure
limit of 175 psi (two stage) and 125
psi (single stage) and should not be
operated beyond this limit.
CRANKCASE BREATHER
During severe operating conditions
or initial start-up, some oil may
accumulate at the crankcase breather
opening. This is normal and will
diminish as the pump accumulates run
time and rings become fully seated.
Maintenance
Disconnect the battery cable,
then release all pressure
from the system before
attempting to install, service, relocate
or perform any maintenance.
In order to maintain efficient operation
of the compressor system, check the
air filter and oil level before each use.
The ASME safety valve should also
be checked daily. Pull ring on safety
valve and allow the ring to snap back
to normal position (See Figure 6).
This valve automatically releases air if
the tank pressure exceeds the preset
maximum. If air leaks after the ring has
been released, or the valve is stuck and
cannot be actuated by the ring, the
ASME safety valve must be replaced.
b. Turn off the compressor and close
drain cock. The compressor is now
ready for use.
6. On cold weather start-up, run unit
unloaded for 10-20 minutes to warm
up compressor and engine.
7. Some vibration is common for the
first 2 to 3 hours of operation. This
vibration will decrease after the belt
and pulley seat.
If the compressor is run under humid
conditions for short periods of time, the
humidity will condense in the crankcase
and cause the oil to look creamy. Oil
contaminated by condensed water
will not provide adequate lubrication
and must be changed immediately.
Using contaminated oil will damage
bearings, pistons, cylinders and rings
and is not covered under warranty. To
avoid water condensation in the oil,
periodically run the compressor with
tank pressure at 20 psi under maximum
pressure setting by opening the drain
cock or an air valve connected to the
tank or hose. Run the pump for an hour
at a time at least once a week or more
often if the condensation reoccurs.
Change oil after
first 50 hours of
operation.
CONTINUOUS RUN OPERATION
Continuous run operation is designed
for gasoline engine units to ensure the
required air pressure is always available
and to eliminate the need for frequent
starting. The engine and the pump
continuously run to keep the air tank at
maximum operating pressure.
IDLE DOWN/UNLOADING
This unit is equipped with idle down/
unloading control. To check operation:
1. Close outlet valve (See Figure 1).
2. Start compressor and allow pressure
to reach proper limit of control valve
(See Figure 4) which is set at 175 psi
for 2 stage compressor, and 125 psi
for single stage compressor. At this
point, the compressor should unload
through the breather bushing on
control valve and the engine should
idle down.
Operation (Continued)
Before starting
the compressor,
thoroughly read all component
instruction manuals, especially the
engine manual.
A belt guard must be
installed before operating
the unit.
1. Do not operate compressor higher
than the rated speed. Excessive
engine speeds can damage the
compressor and engine.
2. Before starting the compressor,
always put toggle lever in unload
position (See Figure 4).
Do not disconnect
battery from engine
ignition while compressor is running
(models w/electric start only).
3. Check the oil level in the compressor
and engine crankcase and add oil if
required.
4. Fill fuel tank with clean, fresh,
regular unleaded (or regular leaded
if not available) grade of automotive
gasoline. Do not mix oil with
gasoline.
5. When putting unit into service for
the first time, the compressor should
be run continuously for one hour to
allow proper seating of the piston
rings.
a. Open drain cock on the tank and
run the compressor unloaded for
60 minutes (See Figure 5).
Unloaded
Loaded
Figure 4 - Control valve
Figure 5 - Opening drain cock