MQ Power WHISPERWATT DCA125SSIU4F Operation Manual page 41

AIR CLEANER
Periodic cleaning/replacement of the air cleaner is
necessary. Inspect the air cleaner (Figure 46) in accordance
with the maintenance section of this manual or the Isuzu
Engine Owner's Manual.
Figure 46. 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 and adjust it in accordance with the
Isuzu Engine Owner's Manual.
The fan belt tension is proper if the fan belt bends
0.2–0.3 in. (6–8 mm) when pressed with the thumb as
shown in Figure 47.
Figure 47. Fan Belt Tension
DCA125SSIU4F 60 HZ GENERATOR • OPERATION MANUAL — REV. #6 (05/12/22) — PAGE 41
0.2 ~ 0.3 IN.
(6 ~ 8 MM)
DEFLECTION
INSPECTION/SETUP
Table 15. Fan Belt Deflection
Standard Value
Amount of Deflection
0.2–0.3 in.
(6–8 mm)
CAUTION
NEVER place hands near the belts or fan
while the generator set is running.
BATTERY
This unit is of negative ground. DO NOT connect in reverse.
Always maintain battery fluid level between the specified
marks. Battery life will be shortened if the fluid levels are
not properly maintained. Add only distilled water when
replenishment is necessary.
DO NOT overfill. Check to see whether the battery cables
are loose. Poor contact may result in poor starting or
malfunctions. ALWAYS keep the terminals firmly tightened.
Coat the terminals with an approved battery terminal
treatment compound. Replace the battery with only the
recommended type battery. The battery type used in this
generator is BCI Group 4D.
The battery is sufficiently charged if the specific gravity
of the battery fluid is 1.28 (at 68°F). If the specific gravity
should fall to 1.245 or lower, it indicates that the battery is
dead and needs to be recharged or replaced.
Before charging the battery with an external electric source,
be sure to disconnect the battery cables.
Standard Value
(Vibration Frequency)
210 Hz