Kohler Generator Sets 20--2800 kW User Manual download pdf (Page 32)

TP-5700 7/9320 Section 4 Air Requirements

4.11 Block Heaters

Block heaters are recommended on all standby

applications where the generator is subject to

temperatures below 60° F(16°C) and are available as

installed accessories on all generator sets. The block

heater should be connected to a source of power, which

is determined by the particular size and type of heater.

Note: BLOCK HEATER DAMAGE! Do not energize block

heater until engine block is filled with coolant and the

generator set is run to remove trapped air .

Otherwise, block heater failure will result. Unplug

block heater prior to draining cooling system.

4.12 Recommended Coolant

Antifreeze/coolant protection will be required for most

applications. This must be performed prior to startup of

generator set and energizing block heater(s).

A solution of 50% ethylene glycol and 50% clean,

softened water is recommended to provide freezing

protection to --34°F(--37°C) and boiling protection to

256 °F (129 °C). A 50/50 solution will also inhibit rust and

corrosion. Follow the engine manufacturer’s

recommendations when available.

For most diesel engines, an additional inhibitor additive

is required to prevent cavitation erosion. Refer to the

engine operation manual for inhibitor section and

concentration level recommendations.

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Kohler Generator Sets 20--2800 kW User Manual Page 32