Multiquip SG1400C3 Coolant Antifreeze/summer coolant, Operation in Freezing Weather

inspection/setup

Coolant (Antifreeze/summer coolant)

Cummins recommends antifreeze/summer coolant, for use in their engines, which can be purchased in concentrate (and mixed with 50% demineralized water) or pre-diluted. See the Cummins Engine Owner’s Manual for further details.

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.

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 12 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.

Table 12. Coolant Capacity

Engine and Radiator	7.8 gal (29.5 liters)
Reserve Tank	6 quarts (6.6 liters)

Operation in Freezing Weather

When operating in freezing weather, be certain the proper amount of antifreeze (Table 13) has been added.

Table 13. Anti-Freeze Operating Temperatures

Vol %	Freezing Point		Boiling Point
Anti-	°C	°F	°C	°F
Freeze
50	-37	-34	108	226

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 machine is 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.

Fan Belt Tension

A slack drive belt may contribute to overheating, or to insufficient charging of the battery, adjust drive belt in accordance with the Cummins Engine Owner’s Manual.

Drive Belt inspection

Inspect the drive belt for damage and wear. Horizontal (across the belt) cracks are acceptable. See Figure 16 below. Vertical (direction of belt ribs) cracks that intersect with horizontal cracks are not acceptable.

If the drive belt is frayed, punctured, or material is missing do not use drive belt.

NO

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Figure 16. Drive Belt Inspection

CAUTION

NEVER place hands near the belts or fan while the generator is running.

page 32 — SG1400C3 Studio Generator • operation manual — rev. #0 (10/05/11)