MQ Power WHISPERWATT DCA600SSV4F3 Operation Manual page 39

DEF REFUELING
NOTICE
ONLY fill the DEF tank with diesel exhaust fluid. Any
other type of fluid may cause severe engine damage.
Diesel exhaust fluid (DEF) is an aqueous solution
made with 32.5% high purity urea (carbamide) and
67.5% deionized water. DEF is used as a consumable in
selective catalytic reduction (SCR) in order to lower NO
concentration from diesel exhaust emissions.
1. Make sure the engine is OFF.
2. Remove the filler cap from the DEF tank (Figure 43).
CAUTION
EXHAUST FLUID ONLY
D
Filling this tank with
anything other than
DIESEL EXHAUST FLUID
may result in severe
engine damage.
No Diesel
M94110000
Figure 43. DEF Tank Filling
3. Upon initial startup, completely fill the DEF tank with
DEF fluid. DO NOT overfill.
DEF Refueling (Continuous Operation)
It is recommended to shut down the engine prior to
refilling the DEF tank. However, during special applications
where shutdown is not possible, it is recommended to ONLY
refill the DEF tank when the fluid level has been consumed
down to 50%.
The DEF level sending unit requires a gradual DEF level
decrease during continuous operation to validate proper
operation. Failure of this sensor to report the decrease could
result in an engine shutdown. An engine service technician
would be required to remedy the shutdown.
DCA600SSV4F3 60 HZ GENERATOR • OPERATION MANUAL — REV. #2 (11/15/22) — PAGE 39
DEF TANK
CAP
REAR VIEW
INSPECTION/SETUP
COOLANT
Volvo recommends pre-diluted Volvo Penta Coolant VCS
(yellow). See the Volvo engine owner's manual for further
details.
WARNING
When adding coolant/antifreeze mix to the
radiator, DO NOT remove the radiator cap
until the unit has completely cooled. The
x
possibility of hot coolant exists which can
cause severe burns.
Day-to-day addition of coolant is performed at the reserve
tank. When adding coolant to the radiator, DO NOT remove
the radiator cap until the unit has completely cooled. See
Table 11 for engine/radiator and reserve tank coolant
capacities.
Table 11. Coolant Capacity
Engine and Radiator
Reserve Tank
NOTICE
Check the coolant level daily. Normally, only the coolant
level in the reserve tank needs to be checked. However,
the radiator cap should be opened once a week to verify
that coolant is visible (full) inside the radiator.
Verify that the coolant level in the coolant reserve tank is
between the MIN and MAX markings on the sight glass as
shown in Figure 44.
COOLANT
RESERVE TANK
Figure 44. Coolant Reserve Tank
26.1 gallons (99 liters)
2 quarts (1.9 liters)
SIGHT GLASS
M A X
M IN