1 air requirements, 2 block heaters, 3 high water temperature switch – Kohler 13ERG User Manual

Page 15: 4 unit-mounted radiator cooling

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TP-6335

9/04

Cooling System 5

Section 3 Cooling System

3.1 Air Requirements

Air flow around the generator set is necessary for
adequate cooling.

See the current generator set

specification sheet for air requirements. The air intake
silencer/cleaner provides combustion air to the engine.
See Figure 3-1 for allowable intake restriction.

The

engine/generator

performance

will

be

adversely

affected if these guidelines are neglected. Follow these
guidelines to optimize generator set performance.

Model

Normal Intake Restriction

10/13/15ERG

0.06 psi (0.50 in. H

2

O)

Figure 3-1

Intake Restriction

3.2 Block Heaters

Block heaters are available as installed accessories on
these generator sets. Use block heaters in applications
where the generator set is subject to temperatures
below 16

_C (60_F). Connect the block heater to a

power source that is energized when the generator set
is not running.

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.

3.3 High Water Temperature Switch

Each generator set includes a high water temperature
shutdown switch that automatically shuts down the set if
operating temperatures climb too high.

Follow the

guidelines

described

in

Section

3.1

to prevent

shutdowns.

3.4 Unit-Mounted Radiator Cooling

The generator set is equipped with a unit-mounted
radiator common cooling system.

3.4.1

System Features

The

system’s

major

components

include

an

engine-driven fan and circulating water pump, a
radiator, and a thermostat. The pump circulates water
through

the

engine

until

it

reaches

operating

temperature.

Then, the engine thermostat opens,

allowing water circulation through the radiator.

The

thermostat restricts water flow as necessary to prevent
overcooling. The fan blows air from the engine side of
the radiator across the cooling surface.

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