DEF TANK REPLENISHMENT SYSTEM • OPERATION MANUAL — REV. #0 (09/11/20) — PAGE 7
GENERAL INFORMATION
The emission control system employed with
most
diesel
engines consists of a
Diesel Oxidation Catalyst (DOC)
and a
Selective Catalytic Reduction (SCR)
catalyst
as an exhaust gas after-treatment system that helps
reduce harmful gases and destroy the organic fraction of
particulate matter produced from the exhaust gas.
To help reduce these harmful emissions,
Diesel Exhaust
Fluid (DEF)
is required. MQ Power has designed an
external DEF system to provide DEF to the generator’s
diesel engine.
DEF is a mixture of high-purity, synthetic automotive-grade
urea (32.5%) and deionized water that is used in Selective
Catalytic Reduction (SCR) systems on diesel engines.
The DEF is injected into the exhaust pipeline, where the
aqueous urea vaporizes and decomposes to form ammonia
and carbon dioxide.
Within the SCR catalyst, the NO
x
are catalytically reduced
by the ammonia (NH
3
) into water (H
2
O) and nitrogen (N
2
),
which are both harmless. These are then released through
the exhaust.
The DOC device helps in filtering out large amounts of harmful
Nitrogen Oxides (NOx)
and
Particulate Matter (PM)
which are emitted by diesel engines. These exhaust
emissions pose serious environmental and health risks.
It is always important to maintain and service the DOC
emission safety device on a periodic basis.
STANDARD FEATURES
CANBUS DEF level monitoring.
Designed to automatically maintain DEF fluid level for
up to two engine assemblies simultaneously with no
operator involvement.
Digital controller provides automated sensing, pumping,
purging and shutdown to maintain onboard DEF tank
levels.
Heavy-duty, galvanized skid base with fork pockets and
tie-downs.
25-foot (7.62 m) DEF refilling hoses housed within a
lockable front compartment.
Easy-access drain port for serviceability.
MODELS
1.
DEFTANK1
— Allows for the unattended/automatic
replenishment of one engine’s on-board DEF tank.
2.
DEFTANK2
— Allows for the unattended/automatic
replenishment of up to two engines’ on-board DEF
tanks.
OPTIONS (DEF TANK)
1.
DEFTANK2KIT
— Converts DEFTANK1 to DEFTANK2.
2.
DEFHOSEHEAT
— 19.7-foot (6.00 m) heated DEF fill
hose for use in cold weather conditions. See Table 4.
3.
DEFTANKHEATPAD
— 1500-watt, 120-volt heating
pad for use in cold weather conditions. See Table 3.
4.
DEFTANKSTACKKITP
— Allows two DEF tank models
to be stacked on top of each other. Cage (frame) is
powder-coated black. See Table 5.
5.
DEFTANKSTACKKITG
— Allows two DEF tank
models to be stacked on top of each other. Cage
(frame) is galvanized. See Table 5.
6.
DEFDISPENSERKIT
— Allows for the manual transfer
of DEF to other equipment. Connection to a 12-volt DC
battery required. See Table 2.
OPTIONS (DEF TANK ADAPTER KITS)
1.
DEFADAPTERKITA
— Modifies a DCA70SSIU4F or
DCA125SSIU4F generator for external DEF capability.
2.
DEFADAPTERKITB
— Modifies a DCA70SSJU4F
generator for external DEF capability.
3.
DEFADAPTERKITC
— Modifies a DCA150 – 300 series
generator for external DEF capability.
4.
DEFADAPTERKITD
— Modifies a DCA400SSI4F or
DCA400SSI4F3 generator for external DEF capability.
