Hotstart DLV, Руководство по установке и эксплуатации

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2
installation
&
operation manual
|
dlv heating system
1.2 OPERATION OVERVIEW
The DLV heating system is intended to maintain an engine’s optimal starting temperature while the
engine is shut down. The heating system may be activated locally or by optional remote control ( see
SECOIO 2.7
). The DLV heating system should be deactivated upon engine start-up.
During heating system operation, a centrifugal pump takes coolant from the drain area low on the engine
water jacket and forces it through the heating tank and into the coolant return line. Simultaneously, a rotary
gear pump takes oil from the sump and forces it through the heating tank to the oil return line. The coolant
pump and oil pump will continuously circulate fluid throughout the engine. To maintain consistent fluid
temperature, the heating elements will cycle on and off at the user-selected temperature control point.
A coolant check valve (included with the DLV unit and installed at the coolant outlet) and an oil check valve
(user-supplied and installed near the oil suction port) prevent backflow while the engine is operating. When
the engine is shut down, the heating system should be activated locally or remotely to resume maintaining
the engine’s optimal starting temperature.
Figure 1. DLV
operation overview,
showing oil and
coolant circulation.
While the heating
elements cycle
on and off to
maintain the preset
temperature, the
pumps circulate
fluid continuously
during operation.
Component
illustrations are for
reference only and
are not to scale.
See part drawings
for dimensions and
specifications.
COOLANT RETURN
OIL RETURN
OIL SUPPLY
COOLANT SUPPLY
PRESSURE RELIEF