Backflow Preventers; Raw Water Outlet Temperature; Flow Paths Of Engine Cooling System - Clarke C18H Instruction Manual

pressure between the two sensors and will send an
alarm to the controller if a low water flow condition
exists.
Additionally, a raw water temperature switch will
send an alarm (terminal 310) when temperature of the
water exceeds 105°F (41° C). Refer to Figure #20
for location of switch. If either of these alarms are
active, it indicates that the cooling system's
capability may be compromised.
Figure #20A

3.4.7.6 Backflow Preventers

NFPA 20 allows for the use of backflow preventers
in the Automatic and Manual flow line of the cooling
loop as required by local code. For specific
application information contact factory.

3.4.7.7 Raw Water Outlet Temperature

Certain local codes may not allow you to discharge
the waste water outlet from the engine heat
exchanger either due to its temperature or it now
being considered hazardous waste. It is
recommended you always check local codes
regarding waste water discharge.

3.4.7.8 Flow Paths of Engine Cooling System

The engine coolant flows through the shell side of the
heat exchanger (or radiator), engine coolant pump, oil
cooler, turbo chargers, engine block and cylinder
head, jacket water heater, thermostat, expansion tank,
and coolant recovery tank (if equipped).
On heat exchanger equipped engines raw cooling
water flows through the tube side of the charge air
cooler, if equipped, and the tube side of the heat
exchanger.
Refer to Figures #21A for heat exchanger cooled
engines and #21B for radiator cooled engines for
cooling system flow path diagram.
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