Operation in Freezing Weather, Air Cleaner

CAUTION :

When adding coolant or antifreeze to the radiator, do not remove the radiator cap until the unit has completely cooled.

Day-to-day addition of coolant is done from the reserve 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 reserve tank coolant capacities. Make sure the coolant level in the reserve tank is always between the "H" and the "L" markings.

Table 12. Coolant Capacity

	Engine and Radiator	16.9 Gal. (64.0
	Engine and Radiator	Liters)
		Liters)

	Reserve Tank	2 Quarts (1.9 Liters)

Operation in Freezing Weather

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

Table 11. Anti-Freeze Operating Temperatures

Vol %	Freezing Point		Boiling Point
Vol %
Anti-Freeze	°C	°F	°C	°F
	°C	°F	°C	°F

40	-24	-12	106	222

50	-37	-34	108	226

NOTE

When the antifreeze is mixed with water, the antifreeze mixing ratio must be less than 50%.

DCA-400SPK — PRE-SETUP

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 battery disconnected.

Air Cleaner

Periodic cleaning/replacement is necessary. See maintenance section for instruction to cleaning/replacing air cleaner.

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. See maintenance section on replacing belts. To adjust tension:

1.Insert a bar between alternator and the cylinder block to fix alternator in position. When fixing the alternator in position, insert a wooden block between the bar and alternator to prevent damage to the alternator.

2.Loosen bolts and nuts located on the alternator.

3.Move alternator with the bar so the deflection of the belt is approx. 8mm.

4.Tighten the bolt and nuts to fix the alternator back to position.

The fan belt tension is proper if the fan belt bends 7 to 10

mm(Figure 29) when depressed with the thumb as shown below.

Figure 29. Fan Belt Tension

CAUTION :

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

PAGE 44 — DCA-400SPK — PARTS AND OPERATION MANUAL— REV. #0 (06/19/01)

DCA-400SPK specifications

The Multiquip DCA-400SPK is a powerful and versatile diesel generator designed to meet the demands of both commercial and industrial applications. Known for its robust performance and reliable operation, this generator is engineered to provide consistent power in various environments, making it a go-to solution for contractors, events, and emergency backup needs.

One of the DCA-400SPK's standout features is its Cummins QSB6.7 engine, which provides 400 kVA (kilovolt-amps) of output. This engine is renowned for its fuel efficiency and durability, ensuring that users get the most out of their investment without frequent refueling. The generator is also equipped with a two-pole alternator that contributes to its ability to handle heavy loads without compromising performance.

Another notable characteristic of the DCA-400SPK is its advanced control panel. The generator comes with a fully digital control system that offers real-time monitoring and control of the generator’s functions. This includes features such as automatic voltage regulation (AVR), which ensures stable output voltage, and can be vital for protecting sensitive electronic equipment from power fluctuations.

In terms of sound attenuation, the DCA-400SPK is designed with a sound-attenuated canopy that significantly reduces noise levels during operation. This makes it suitable for use in residential areas or other noise-sensitive locations, allowing for operation without disturbing the surrounding community.

For ease of transport, the generator includes a sturdy frame and is equipped with forklift pockets and lifting hooks. This enhances its portability, making it easier to move from one job site to another. Additionally, the unit offers comprehensive connectivity options, allowing it to interface with remote monitoring systems, which can be essential for maintenance and operational oversight.

The Multiquip DCA-400SPK also features an environmentally friendly design, with a low oil shutdown feature and a robust fuel containment system to prevent spills. This not only ensures compliance with environmental regulations but also enhances the safety of operation.

Overall, the DCA-400SPK stands out as a reliable, efficient, and user-friendly generator that meets the stringent demands of the modern world, making it a preferred choice among professionals in various industries.