Generac Mobile MDE570P, Owner'S Manual, Page: 32 / 80

28 Owner’s Manual for Mobile Generator
and oil. Preheat time is reduced to 2 hours if
ambient temperatures have not been colder than
-4F (-20C). These heaters will cycle on and off as
needed during preheat cycle. When engine has
started, the inlet receptacle can be disconnected
as heater will no longer be needed if engine
continues to run.
•
Optional fuel filter heaters (x3) can be configured
with the machine to aide in cold weather starting
and cold weather operation. These heaters are
powered via the battery circuit (24 VDC). These
heaters are equipped with a thermo-switch for
automatic heater activation when ambient
temperatures drop below the switch threshold. The
battery disconnect switch must be switched to the
ON position for these heaters to work. The
machine must also be configured with a 24 VDC,
30 A battery charger to ensure maximum battery
performance and heater operation.
•
Optional crankcase ventilation heater can be
configured with the machine to aide in cold weather
operation. This heater is powered via the battery
circuit (24 VDC). This heater is equipped with a
thermo-switch for automatic heater activation when
ambient temperatures drop below the switch
threshold. The battery disconnect switch must be
switched to the ON position for these heaters to
work. The machine must also be configured with a
24 VDC, 30 A battery charger to ensure maximum
battery performance and heater operation.
•
Standard 50/50 coolant can be used down to 0 °F
(-18 °C). If continued operation below 0 °F (-18 °C)
is likely, it is recommended to use 60/40 coolant
blend for optimal machine performance during cold
weather operation.
•
For more information on cold weather operation,
see your local GMASD.
Using An External Battery Charger
See
Figure 3-1
. A 24 VDC battery charger can be
connected to the batteries, to aid in cold weather starting.
ALWAYS use heavy-duty jumper cables.
Figure 3-1. Connecting Battery Charger
1.
Connect battery charger to a power source.
2.
Switch the battery disconnect switch to ON, com -
pleting the circuit of the batteries connected in
series. This will allow charging of both batteries on
the generator.
3.
Connect the POSITIVE (+) cable of the battery
charger to the positive post of the battery that is
connected directly to the (+) post of the starter.
4.
Connect the NEGATIVE (-) cable of the battery
charger to the grounding lug on the frame located
directly below the BDS as seen in the image.
5.
Turn the charger to the correct voltage setting and
charging current.
6.
Start the engine. Disconnect jumper cables imme -
diately after engine starts.
NOTE: To avoid sparks, do not allow free ends of jumper
cables to touch metallic conductive material.
Using Two-Position Link Board
IMPORTANT NOTE: Never attempt to open link board
panel when engine is running. There is a safety switch
that will shunt trip breaker and shut down generator if
panel is removed.
The two-position link board mechanically configures the
generator main windings.
This unit is equipped with one of three multi-voltage
alternators capable of achieving up to 600 VAC. In
addition to the link board, a two-position toggle switch
can be used to select other voltages. A large decal on the
link board cover panel details the proper connections for
selected voltages.
1.
Shut down the unit. See Shutting Down the Unit .
2.
Remove fasteners from link board cover panel.
(000167a)
Equipment damage. Do not make battery
connections in reverse. Doing so will result
in equipment damage.
CAUTION
014011
(000187)
WARNING
Electrocution. Potentially lethal voltages are generated
by this equipment. Render the equipment safe before
attempting repairs or maintenance. Failure to do so
could result in death or serious injury.