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Speedaire Operating Instructions
Speedaire
Compressors
Operation (Continued)
RECOMMENDED BREAK-IN PERIOD
The compressor should be run
continuously for one hour to allow
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proper seating of the piston rings.
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1. Open drain cock completely and run
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the compressor for 60 minutes (see
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Figure 6)
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S
H
Figure 6 - Opening Drain Cock
2. Turn off the compressor and close
drain cock. The compressor is now
ready for use.
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
near 150 psi for two-stage compressors
or 120 psi for single stage compressors
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.
IMPORTANT: Change oil after first 50
hours of operation..
PRESSURE SWITCH, START - STOP
NOTE: This compressor has a maximum
operating pressure of 175 psi for
twostage compressors or 135 psi for
single stage compressors. Do not alter
Two-Stage Air
®
pressure settings on control components
above this limit.
The compressor unit starts and stops
based on preset pressure switch
settings. The pressure switch contains
an unloader which is a small valve that
vents air to allow the motor to start
easily (See Figure 7).
Figure 7 - Pressure Switch
CONTINUOUS RUN OPERATION
To convert to continuous run operation
a separate unloading device such as the
Load Genie (5X709 - 5 HP; 10 and 15
HP units) must be installed by the user
between the pump and the tank. The
existing check valve must be removed.
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 the piston
rings become fully seated.
Maintenance
Disconnect, tag and lock out
power source 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
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checked daily (See Figure 8). This valve
automatically releases air if the tank
pressure exceeds the preset maximum.
Pull the ring on the safety valve to
confirm that the valve will open. If the
valve is stuck and cannot be actuated
by the ring, the ASME safety valve must
be replaced. After confirming correct
operation, release the ring. The valve
will reset when tank pressure drops to
approximately 40 psi.
Unloader
To tank
pressure
Figure 8
ASME safety valve.
TANK
Never attempt to repair or
modify a tank! Welding,
drilling or any other modification will
weaken the tank resulting in damage
from rupture or explosion. Always
replace worn, cracked or damaged
tanks.
The tank should be carefully inspected
at a minimum of once a year. Look for
cracks forming near the welds. If a crack
is detected, remove pressure from tank
immediately and replace.
COMPRESSOR LUBRICATION
See Operation. Add oil as required.
The oil and oil filter should be changed
every three months or after every 500
hours of operation; whichever comes
first.
4MU10A, 3VB60
Do not attempt to
tamper with the
Drain liquid from
tank daily.
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