20
PTS 916 Cd
In case of internal fuel supply, fuel from the fuel tanks (FT) is
circulated by the engine fuel pump (FP
E
). The fuel is pumped
through a 3-way valve (TWV) to two primary fuel filters (FF
P
).
The fuel then passes through the secondary fuel filters (FF
S
) and
enters the engine (E).
The fuel, which is not used by the engine to combust, returns via
the air-cooled fuel cooler (FC) and the 3-way valve to the fuel
tanks.
Normally the primary fuel filters are in parallel. By means of the
fuel shut-off cock (FSC), seated on the housing of the filters, one of
the filters can be shut off when it has to be serviced. This can even
be done while the engine is running.
An electrical priming pump (EPP) is comprised in the system to fill
up filters and fuellines after maintenance and servicing. A
description of this procedure can be found on page 45.
Instead of internal fuel supply via the fuel tanks, external fuel
supply is possible.
When using external fuel, both the supply and the return hose must
be connected to the external fuel supply couplings (EFC).
No restrictions are allowed in those hoses.
Take the necessary precautions to keep the fuel return hose opened
and connected, while the unit is running.
Check that the primary fuel filters are not both shut off.
Restart the unit.
2.9 Water system
The water system contains a coolant flow to cool the engine’s
cylinders.
The coolant is circulated by the engine water pump (WP
E
), seated
on the back of the engine (E). When the coolant returns from the
engine, it passes through the radiator (RAD), which is air-cooled by
the cooler fan (F
1
).
The radiator top tank (TT
RAD
) supplies the coolant to the system
and gives the coolant in the system room to expand.
Do not put the fuel shut-off cock in the lowered
position (the handle pointer points up) when the
engine is running, because both filters will be shut off
and no fuel will flow to the engine.
The u²nit must be stopped before switching from the
internal to an external fuel source.
!
!
Radiator
E
Engine
F
1
Cooling fan 1 (RAD, IC, AC
1
, OC)
RAD
Radiator
TT
RAD
Top tank (radiator)
WP
E
Engine water pump (radiator)
E
F
1
RAD
Содержание PTS 916 Cd
Страница 1: ...Instruction Manual for Portable Compressors PTS 916 Cd ...
Страница 2: ......
Страница 57: ...Preliminary 57 Circuit diagrams ...
Страница 72: ......
Страница 73: ......
Страница 74: ...Printed in Belgium 07 2007 Preliminary www atlascopco com ...