Multiquip manual DCA-300SSK SERIES - PRE-SETUP, must be less than 50%, Cleaning the Radiator

DCA-300SSK SERIES — PRE-SETUP

Coolant (Ethylane Glycol [Green] / Water — 50/50 mix)

Use only drinkable tap water. If hard water or water with many impurities is used, the inside of the engine and radiator may become coated with deposits and cooling efficiency will be reduced.

An anticorrosion additive added to the water will help prevent deposits and corrosion in the cooling system. See the engine manual for further details.

WARNING - BURN HAZARDS

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 11 for engine and radiator, coolant capacities. Make sure the coolant level in the recovery tank is always between the "H" and the "L" markings.

Table 11. Coolant Capacity

Engine Type	Coolant Capacity
Komatsu SA6D125E-2	8.5 Gal. (32.6 Liters)
Komatsu SAA6D125E-2	9.8 Gal. (37.0 Liters)

NOTE	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 Komatsu Engine Owner's 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

Komatsu Engine Owner's Manual.

The fan belt tension is proper if the fan belt bends 10 to 15

mm(Figure 38) when depressed with the thumb as shown below.

Figure 38. Fan Belt Tension

Operation Freezing Weather

When operating in freezing weather, be certain the proper amount of antifreeze (Table 12) has been added.

Table 12. Anti-Freeze Operating Temperatures

Vol %	Freezing Point		Boiling Point
Anti-Freeze	°C	°F	°C	°F
40	-24	-12	106	222
50	-37	-34	108	226

CAUTION - ROTATING PARTS

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

DCA-300SSK SERIES — PARTS AND OPERATION MANUAL (STD)— REV. #4 (03/27/06) — PAGE 35