Onan DFE Series User Manual

EXPANSION TANK
DRAIN
'WATER
• IN;
MANUAL OR AUTOMATIC
WATER.TEMP-CONTROL.
VALVE
STRAINER^
CS-1075
FIGURE 7. TYPICAL HEAT EXCHANGER
Coolant Filter
One spin-on typexorrosion filter (Figure 8) is standard
equipment. This precharge filter is compatible with plain
water and all ethylene glycol base permanent anti-
freeze coolants. Referto engine manufacturer's manual
for instructionslfa methoxy propanal base anti-freeze is
desired. Replace
>
filter periodically as recommended; in
MAINTENANCE section of Operators Manual.
COOLANT FILTER-
SHUT-OFF VALVE
SPIN-ON
COOLANT FILTER-
SHUT-OFF
1
VALVE
BATTERY CHARGING
ALTERNATOR
FIGURE 8. TYPICAL COOLANT FILTER;
Coolant Heater (Optional)
A coolant heater is used to keep engine coolant warm
when the engine is shut down. It heats and circulates the
coolant within the engine. This reduces start-up time
and lessens engine wear caused by cold starts. It is
electrically operated and thermostatically controlled.
ACAUTION
The heater must not be operated
while the cooling system is empty or
when the engine is running or, damage to the heater-will
occur.
Figure 9 shows the the heater line connections. Con-
nect the. heater to a source of power that will be on
during the time the engine is not running. Be sure the
voltage rating is correct for the heater element rating. -
WATER HEATER
OUTLET
OIL PLUG
- - WATER
HEATER
INLET
ELEMENT
HEAD AND
VALVE ASSY
DRAIN COCK
FIGURE 9. TYPICAL COOLANT HEATER
10

Onan DFE Series Specifications

General

Brand	Onan
Model	DFE Series
Category	Inverter
Language	English