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3.4 Block Heaters
Block heaters are available as installed accessories on
all generator sets. Use block heaters on all standby
applications where the generator set is subject to
temperatures below 0_C (32_F). Connect the block
heater to a power source that is energized when the
generator set is not running.
3
1. Radiator hoses
2. Hose connector
Figure 3-10 Block Heater, Typical
3.5 Startup
If any problems arise during startup, immediately shut
down the generator set. See Figure 3-11, Cooling
System Checklist. Even after a successful startup, shut
down the generator set after 5--10 minutes and recheck
the belt tension to make sure no hardware has loosened
during operation. Perform another recheck after
8--12 hours of operation.
28
Section 3 Air and Cooling
1
2
1
3
3. Block heater
4. Reducer bushing
Note: Block heater damage. The block heater will fail
if the energized heater element is not immersed
in coolant. Fill the cooling system before turning
on the block heater. Run the engine until it is
warm and refill the radiator to purge the air from
the system before energizing the block heater.
n
Operation
Verify the cooling fan's position in the fan shroud.
Check the mounting hardware.
Check the fan motor for free rotation.
Check V-belts for alignment and tension.
Fill the system with coolant and check all
connections for tightness and leaks.
Verify that all electrical connections are secure and
that the power source matches the motor nameplate.
Verify that no foreign material is loose in the fan's air
stream.
With the unit running, check for:
fan clearance
excessive vibration
excessive noise
coolant leaks
Figure 3-11 Cooling System Checklist
4
GM58835
TP-6609 6/08
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