MQ Power Whisperwatt DCA-300SSK Operation And Parts Manual page 35

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.
T b a e l 1 . 1
n E i g e n y T e p
o K m t a u s S A D 6 2 1 E 5
o K m t a u s S A A D 6 2 1 E 5
Operation Freezing Weather
When operating in freezing weather, be certain the proper
amount of antifreeze (Table 12) has been added.
T b a e l 1 . 2 A n - i t r F e e
F e r i z e
V l o %
A i t n r F - e e e z
C °
0 4 - 4 2
0 5 - 7 3
DCA-300SSK SERIES — PARTS AND OPERATION MANUAL (STD)— REV. #4 (03/27/06) — PAGE 35
C o o a l t n C p a c a y t i
C o o a l t n C p a c a y t i
2 - 8 5 . G a ( . l 2 3 6 . L e t i ) s r
2 - 9 8 . G a ( . l 7 3 0 . L e t i ) s r
e z O p r e i t a g n e T m e p t a r r u s e
g n o P t n i B i l i o g n o P t n i
F ° C ° F °
- 2 1 1 6 0 2 2 2
- 4 3 1 8 0 2 6 2
DCA-300SSK SERIES — PRE-SETUP
NOTE
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
CAUTION - ROTATING PARTS
NEVER place hands near
the belts or fan while the
generator set is running.
When the antifreeze is mixed with
water, the antifreeze mixing ratio
must be less than 50%.