TM
5-4310-350-14
OPERATING
INSTRUCTIONS
WARNING
If equipment fails to operate, refer to troubleshooting procedures in Chapter 3.
Section I. OPERATING PROCEDURES
ing up on the ring at the end. It is manually
2-1. Controls and Instruments
tripped to release pressure in the air receiver
a. General. This section describes, locates,
tank and to test the valve.
illustrates and furnishes the operator sufficient
g. ON-OFF Starter Switch. The on-off starter
information pertaining to the various controls
switch (fig. 11) is a manually actuated switch
and instruments provided for the proper opera-
located top center of the magnetic switch box
tion of the air compressor.
cover. In OFF position the compressor motor will
b. Globe Valve. The globe valve (fig. 11)
not operate. When the selector is turned to ON
mounted on the end of the air receiver tank is a
position the compressor will operate until pres-
manually operated valve that opens the flow of
sure in air receiver tank reaches 175 psi (12.30
compressed air to the air hose.
kgs per sq cm) then the pressure switch auto-
c. Drain Cock. The drain cock (fig. 11)
matically shuts-off the motor. The compressor
mounted on the underside of the air receiver
will recycle again automatically when pressure
tank is a manually operated valve used to drain
drops below 140 psi (9.84 kgs per sq cm) and
compressed air and condensation from the air
continue to cycle automatically in this ON position.
receiver tank. Receiver should be drained daily
when the air compressor is in use.
mounted on the cover of the magnetic starter,
d. Oil Level Gage. The oil level gage mounted
below the ON-OFF switch, is manually operated
in the compressor crankcase (fig. 11) is a direct-
button, which when pushed, resets the thermal
reading, glass covered gage used to check the
relay in the magnetic starter.
level of the oil in the compressor crankcase.
e. Air Receiver Tank Pressure Gage. The air
2-2. Operation Under Usual Conditions
receiver tank pressure gage (fig. 11) mounted
a. General. The instructions in this section are
on the side of the air receiver tank, is a needle-
published for the operation of the air compressor.
indicating, direct-reading, pressure-operated gage
It is essential that the operator know how to per-
graduated in pounds per square inch (psi) and
form every operation of which the air compressor
kilograms per square centimeter (kgs per sq cm),
is capable. This section gives instructions on
the gage is graduated from 0 to 300 psi in in-
and stopping, and air-pressure
starting
crements of 5 psi, and from 0-2100 kgs per sq cm
adjustment.
in increments of 50 centimeters. The gage indi-
b. Starting.
cates the air pressure in the air receiver tank.
(1) Inspect the electric motor to make sure
Normal operating pressure is 140 psi (2.46 kgs
it is properly wired from incoming power source
per sq cm) to 175 psi (12.30 kgs per sq cm).
and that power is on.
f. Safety Relief Valve. The safety relief valve
( 2 ) Turn ON-OFF switch (fig. 1-1) to
(fig. 12) is mounted on top of the air receiver
"ON" position.
tank at the motor end. It is a preset valve that
is actuated when the air receiver tank receives a
NOTE
pressure of 200 psi (14.06 kgs per sq cm) or
Should the compressor fail to start, depress the
reset button.
more. This valve can be tripped manually by pull-
