Generac Mobile MLG15, Owner'S Manual

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Owner’s Manual for Mobile Generator 17
Operation
Wet Stacking
The unit is powered by a diesel engine. Diesel engines
are susceptible to wet stacking if lightly loaded. Wet
stacking occurs when an engine is run at less than 30%
of its full load capacity, causing unburned fuel to
accumulate in the exhaust system. Wet stacking can be
detected by continuous black exhaust when the unit is
under a constant load. It can also cause fouling of
injectors and buildup on engine valves. Diesel engines
operate properly when applied loads are between 30%
and 100% capacity. Appropriate generator sizing is
determined by the anticipated load. If the unit is in a wet
stack condition, load the unit heavily for five hours or until
the exhaust is clear.
Receptacle Panel
See Figure 3-5 . This unit is equipped with a receptacle
panel for running accessories or tools from the generator.
Power is supplied to the receptacles any time the engine
is running and the main circuit breaker is switched to ON
(I). Each receptacle has an individual circuit breaker,
located inside the cabinet under a flip-up cover. Each
circuit breaker corresponds with the receptacle located
below it on the receptacle panel.
Should the main breaker, or any of the individual circuit
breakers trip, remove some of the load to the receptacles
before turning them back on.
NOTE: To ensure proper grounding, anytime the genera-
tor is providing power to any equipment or load panels
that do not have a grounded plug, a ground wire must be
added between the equipment and the grounding stud
(A) on the receptacle panel per the National Electrical
Code (NEC), state and local regulations.
Figure 3-5. Receptacle Panel, Grounding Stud (A)
Shutting Down the Unit
Check with personnel using power supplied by the unit
and let them know the power is going to be turned off.
Verify the power shut down will not create any hazards by
accidentally turning off equipment that needs to be kept
on (pumps, compressors, lights, etc.). When you have
finished using the unit, proceed with shut down as
follows:
1.
Remove all loads from the receptacles.
2.
Switch the individual circuit breakers for each
receptacle to OFF (O).
3.
Switch the main circuit breaker to OFF (O).
4.
Turn the key switch to OFF.
NOTE: For extended storage time, disconnect the bat-
tery. For extended storage requirements, see the engine
operator’s manual.
Towing the Unit
Once the engine is shut down, follow these steps to
prepare the unit for towing.
1.
Verify the unit is OFF.
2.
Use the jack to raise or lower the trailer onto the
hitch of the towing vehicle. Lock the hitch coupling
and attach the safety chains or cables to the
vehicle. Raise the jack foot completely.
3.
Connect any trailer wiring to the tow vehicle. Check
for proper operation of the directional and brake
lights.
4.
Verify all doors are properly latched.
5.
Check for proper inflation of the trailer tires. Proper
inflation is specified on each tire.
6.
Check the wheel lugs. Tighten or replace any lugs
that are loose or missing. If a tire has been
removed for axle service or replaced, tighten the
lugs, in the order shown, to the following
specifications:
Figure 3-6. Lug Sequence
A
010059
a. Start all lug nuts by hand.
b. First pass tighten to 20-25 ft-lb
(27-33 Nm).
c. Second pass tighten to 50-60 ft-lb
(67-81 Nm).
d. Third pass tighten to 90-120 ft-lb
(122-162 Nm).
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