Generac Power Systems MAC MIH400HC, Руководство пользователя

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Owner’s Manual for Indirect Fired Heater 13
Operation
Section 3: Operation
Theory of Operation
The indirect heater generates heat if power is supplied to
the burner when the thermostat is on and reading tem-
perature. This starts the combustion in the blast box,
which heats up and moves hot air into the transition once
the burner fires up. Intake air molecules that are pushed
in from the fan come in contact with the stainless steel
tubes as the tubes heat up. This causes a transition in
temperature of the air molecules. The air is then pushed
past the thermostat couplers and into the air duct.
Before Starting Engine
Pre-start Checklist
• Remove all flammable materials and fire hazards
within 5 ft (1.5 m) of the unit.
• Keep the unit a minimum of 10 ft (3 m) from struc-
tures or barricades.
• Verify the unit is not leaking fluids: check inside
and outside the unit for leaking fuel, engine oil, and
engine coolant.
• Verify the following are clear of debris and obstruc-
tions:
– Engine air intake
– Engine exhaust stack
– Outlets and fan intakes
– Cabinet interior
– Burner cabinet interior
• Verify air duct hose is securely fastened to outlet
duct assembly.
• Inspect fuel, engine oil, and engine coolant levels.
• Verify unit is properly secure and level with the
parking brake engaged.
• Inspect the alternator drive belt for tension and
abnormalities.
• Verify the burner cover is securely installed.
• Inspect the generator. See the generator manual.
• Verify battery cable connections are not loose or
corroded.
• Inspect ducting for damage or unusual wear.
Engine Oil Level Check
NOTE: If engine was running, wait at least 10 minutes
before proceeding.
1. Remove oil dipstick and wipe it dry with a clean, lint
free cloth.
2. Slowly insert the clean oil dipstick into the oil dip-
stick tube. Verify the oil dipstick is fully seated.
3. After 10 seconds, remove the oil dipstick and look
at the oil level on both sides. The lower of the two
readings will be the correct oil level measurement.
4. Add oil (if necessary) to adjust the level. After add-
ing or changing the oil, run the engine for one min-
ute before checking the oil level. Wait 10 minutes
to allow the engine to cool and oil to fully drain into
the oil pan.
Typical causes of inaccurate oil level readings:
• Reading the high level of the oil dipstick.
• Reading the oil dipstick before the oil fully drains
into the oil pan.
• Inserting and removing the oil dipstick too quickly.
• Not fully seating oil dipstick in the oil dipstick tube.
Engine Coolant Check
Inspect the coolant sub-tank to check the coolant level.
Check the coolant level when the engine is cold, as cool-
ant flows to the sub-tank when the radiator is still hot,
which provides an inaccurate reading. Replace the cool-
ant according to the
Maintenance Schedule , or if it is
contaminated or dirty. See Adding Coolant .
(000108)
WARNING
Hot Surfaces. When operating machine, do not
touch hot surfaces. Keep machine away from
combustibles during use. Hot surfaces could
result in severe burns or fire.
(000135)
CAUTION
Engine damage. Verify proper type and quantity of
engine oil prior to starting engine. Failure to do so
could result in engine damage.
(000154)
WARNING
Risk of burns. Do not open coolant system
until engine has completely cooled. Doing so
could result in serious injury.