from the magnetic starter. Install the
cover on the magnetic starter.
(6) Turn the outside power source on to
(5) Remove the air hose assembly and
check adjustment. To check the CUT-
globe valve from the air receiver tank.
IN pressure, open the draincock and
Cover the globe valve mount in the air
allow the air pressure to drain below
receiver tank.
140 pounds. Close the draincock, the
compressor should start.
on a suitable carrier and block and tie
(7) Install the cover on the magnetic
it down, using the tiedown eyebolts.
(7) Move the air compressor to the new
c. Air-Prissure. Adjustment, Model LP-512-
work site. Unload it and set it up for
ENG.
operation following the instructions in
(1) Start the air compressor (par. 27).
Note. Air-pressure control is controlled
b. Model LP-512-ENG.
by the unloader valve (5, fig. 2). For normal
operation, the valve is set to unload when
(1) Build up the pressure in the air re-
the air pressure reaches 175 psi.
ceiver tank (4, fig. 2) to a pressure
(2) To increase the pressure at which the
just below 140 psi.
unloader valve will open, turn clown
the hex nut on the threaded top of the
draincock (3) and blow the conden-
unloader valve. Loosen the hex nut
sate from the air receiver tank. Close
to decrease pressure.
the draincock.
30. Movement to a
New Work Site
(3) Remove the bail assembly from the
fuel strainer. Drain the fuel tank.
a. Model OEH-34-60-ENG-1.
(4) Remove the air hose assembly from
(1) Build up the pressure in the air re-
the air receiver tank. Cover the hose
ceiver tank.
mount in the air receiver tank.
(2) Shut off the incoming power source
leading to the electri cmotor (1, fig. 3).
ies on a suitable carrier and block and
(3) Open the draincock (8) and blow the
tie it down, using the tiedown eyebolts.
condensate from the air receiver tank.
Close the draincock.
(6) Move the air compressor to the new
(4) Loosen the screw (12 ) and remove the
work site, Unload it and set it up for
cover from the magnetic starter (13).
operation, following the instructions
Disconnect the incoming power source
Section IV. OPERATION UNDER UNUSUAL CONDITIONS
which will become brittle at low tem-
31. Operation in
Extreme Cold
peratures.
(Below 0 F.)
(4) Clean and tighten all wiring connec-
a. Model OEH-34-60-ENG-1.
tions. Make sure there are no short
(1) Locate the air compressor in a shed
circuits. As wiring insulation tends
or building whenever possible. If the
to become brittle at low temperatures,
unit is operated outdoors, protect it
avoid excessive handling and sliarp
from prevailing winds and cover it
bending of wires. Protect the electric
with a paulin when not in use.
motor and magnetic starter from snow
(2) Lubricate the air compressor accord-
and ice.
ing to the current lubrication order.
b. Model LP-512-ENG.
(1) Perform the procedures described in
(3) Avoid excessive handling, kinking,
a(1) and (3) above.
and sharp bending of the air hose,