Kohler 13ERG User Manual download pdf (Page 15)

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

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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Kohler 13ERG User Manual Page 15

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