TM 5-3805-280-10
Low Ambient Temperature Operation
Allow the unit to warm up for at least (2) two
Two 24 volt DC heaters are provided at critical
minutes.
control system locations to prevent ice formation in
Flip switch SW2 to the opposite position. Panel
the compressor capacity control system. One
light PL2 will go out. The engine should go to full
heater is attached to the surface of the pressure
speed and the discharge pressure rise to slightly
control valve. The other heater is attached to the
over rated pressure. The compressor will unload
bleed orifice connected to the compressor
(intake be throttled or closed) and the engine
unloader valve. The heaters are turned on and off
speed will drop to the idle speed.
using the toggle switches located on either the
Compressor is now ready to furnish air when the
local or remote compressor control panels.
service valve is opened.
Below 40 degrees Fahrenheit
STOPPING
Energize the heaters prior to starting the
Close air service valve (s).
compressor drive engine. Allow the heaters to
operate continuously during compressor operation.
Allow the unit to run at "no load" for 3 to 5 minutes
to reduce the engine temperatures.
Below -25 degrees Fahrenheit
The unit may be stopped from either the local
Energize the heaters and wait 60 seconds prior to
panel on the compressor or the optional start/stop
starting the excavator drive engine. Allow the
panel if so equipped.
heaters to operate continuously during compressor
operation.
Flip both toggle switches (SW1 and SW2) to the
opposite position until both panel lights (PL1 and
PL2) go out. Power is now off.
CAUTION
Note: Once the engine stops, the automatic
blowdown valve will begin to relieve all
Ether is an extremely volatile, highly flammable
gas. Use sparingly! If too much is injected, the
pressure from the receiver-separator system.
uncontrolled explosion may result in costly
damage to the engine.
CAUTION
Flip SW1 and SW2 until both panel lights are
illuminated. All DIAGNOSTICS lamps will light
Never allow the unit to sit stopped with
(glow) for two (2) seconds. Then all lamps should
pressure in the receiver-separator system. As
go off except for ALTERNATOR NOT CHARGING
a precaution, after the automatic blowdown
and LOW ENGINE OIL PRESSURE.
period (2 minutes), open the manual blowdown
valve.
In cold weather, open manual blow down valve
and, press the ETHER INJECT button once and
EQUIPMENT PROTECTION
release.
Then, while cranking, press release
button once every five (5) seconds. This injects a
Note: Do NOT wire around or bypass a
measured amount of ether to the engine.
shutdown sensor or switch.
Press the START button to crank the engine. DO
This unit is protected by sensors or switches at
NOT OPERATE THE STARTER MOTOR FOR
the following locations:
MORE THAN TEN (10) SECONDS WITHOUT
(1) High engine COOLANT temperature in the
ALLOWING AT LEAST ONE MINUTE COOLING
engine.
TIME BETWEEN START ATTEMPTS.
(2) Low engine oil pressure, in the engine.
Release the START button when the engine
(3) Low Fuel Level.
starts and sustains running. If the engine does not
start after a couple of attempts, refer to Trouble
High Discharge AIR Temperature -
Shooting Section.
(4) At the airend outlet.
All Diagnostic lamps should be off. If not, stop the
(5) In the safety valve connection on the separator
machine and investigate. If opened above, close
tank.
manual blowdown valve.
7-35
