Allmand SH-750, Руководство оператора

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operate”, and notify your service or maintenance depart-
ment to get the machine repaired.
To reset the engine air intake shut-off valve
DANGER
Resetting and re-starting the engine after the engine air
intake shut-off valve has automatically shut down the
engine could ignite an explosive atmosphere that will result
in death or serious injury. Always leave the area immedi-
ately when the engine air intake shut-off valve automati-
cally shuts down the engine, and do not return until safety
and supervisory personnel have given an “all clear” to
return to the area.
1. If the air intake shut-off valve has tripped and shut down
the engine automatically, leave the area immediately and
follow the safety instructions and procedures for your job
site. Do not reset or restart the engine until the source of
the problem has been determined, and safety and super-
visory personnel at your job site have given an “all clear”
to return to the area.
2. When permission is given to return to the area, open the
control compartment access door and lock in the open
position, and locate the blue knob on the engine air
intake shut-off valve, located on the right side of the con-
trol panel. Turn the knob so that it aligns with the intake
hoses to and from the valve body. You will hear and feel
a distinct “click” as the engine air intake shut-off valve is
reset to the operating position.
3. Start the engine. See ‘Operating The Engine’.
Operating The Heater Unit
The heater trailer is equipped with an electric, thermostat-
controlled heat exchanger, which results in clean, safe heat.
Max heat output is 750,000 BTUs/hr; maximum temperature
output is 300° F (150° C). See Specifications.
To operate the heater unit
1. Remove the heater duct covers and install heater duct-
ing. See ‘Preparing to Operate the Heater Trailer’ and
‘Heater Ducting’.
WARNING
Failure to remove the heater duct covers could cause a
fire, resulting in death or serious injury. Always remove the
heater duct covers before operating the heater trailer.
2. Start the engine. See ‘Operating the Engine’.
3. Adjust the thermostat (
A , Figure 21) to the lowest tem-
perature setting (50° F (10° C)).
4. Allow the engine to run until coolant temperature reaches
150° F (65° C).
5. Increase engine RPMs to 1400 - 1800. See ‘Engine
Monitor and Control Center’.
6. Adjust the thermostat to the desired target discharge
temperature. (Temperature range of heater unit is 50° F
(10° C) to 300° F (150° C)).
7. Monitor discharge temperature ( B , Figure 21). Depending
upon ambient air temperature, it may take several min-
utes for the discharge temperature to rise to the target
temperature.
8. Continue to monitor engine and heater information
throughout unit operation. Adjust as needed.
9. In the event of an emergency, engage the emergency
stop. See ‘Emergency Stop’.
A B
Figure 21
-
+
To shut down the heater unit
1. Adjust the thermostat to the lowest temperature setting
(50° F (10° C)).
2. Decrease engine RPMs to 1200.
3. Allow 5-10 minutes for the heater unit to cool down.
4. Decrease engine RPMs to 1000.
NOTE: At engine speeds lower than 1200 RPMs, the
generator ceases to produce electricity.
5. Shut down the engine. See ‘Operating the Engine’.
Shutting Down The Heater Trailer
1. Shut down the heater unit. See ‘Operating the Heater
Unit’.
2. Shut down the engine. See Operating the Engine.
3. Remove heater ducting. See ‘Heater Ducting’.
4. Replace canvas covers onto heater ducts. See
‘Preparing to Operate the Heater Trailer’.
5. Close and latch compartment doors.