PAGE 30 — DCA1100SSC 60 HZ GENERATOR • OPERATION MANUAL — REV. #1 (01/17/18)
COOLANT (ANTIFREEZE/SUMMER COOLANT/
WATER)
Cummins recommends antifreeze/summer coolant for use in
their engines, which can be purchased in concentrate (and
mixed with 50% demineralized water) or prediluted. See the
Cummins Engine Owner’s Manual for further details.
Day to day addition of coolant is done from the recovery
tank. When adding coolant to the radiator,
DO NOT remove
the radiator cap until the unit has completely cooled. See
Table 10 for engine, radiator, and recovery tank coolant
capacities. Make sure the coolant level in the recovery tank
is always between the “H” and the “L” markings.
Operation in Freezing Weather
When operating in freezing weather, be certain the proper
amount of antifreeze (Table 10) has been added.
WARNING
If adding coolant/antifreeze mix to the
radiator,
DO NOT remove the radiator cap
until the unit has completely cooled. The
possibility of
hot! coolant exists which can
cause severe burns.
Table 9. Coolant Capacity
Engine and Radiator
55.7 gal (211 liters)
Reserve Tank
N/A
Table 10. AntiFreeze
Operating Temperatures
Vol %
AntiFreeze
Freezing Point
°C
°F
50
37
34
NOTICE
When the antifreeze is mixed with water, the antifreeze
mixing ratio
must be less than 50%.
CLEANING THE RADIATOR
The engine may overheat if the radiator fins become
overloaded with dust or debris. Periodically clean the
radiator fins with compressed air. Cleaning inside the
generatoris dangerous, so clean only with the engine turned
off and the
negative battery terminal disconnected.
AIR CLEANER
Periodic cleaning/replacement is necessary. Inspect it in
accordance with the
Cummins Engine Owner’s Manual
and the maintenance section of this manual.
FAN BELT TENSION
A slack fan belt may contribute to overheating, or to
insufficient charging of the battery. Inspect the fan belt for
damage and wear and adjust it in accordance with the
Cummins Engine Owner’s Manual.
The fan belt (Figure 22) tension is proper if the fan belt
bends 0.4~0.6 in. (10~15 mm) when pressed.
Figure 22. Fan Belt Tension
0.4~0.6 IN.
(10~15MM)
DEFLECTION
CAUTION
NEVER place hands near the belts or fan
while the generator set is running.
INSPECTION/SETUP
