Fliegl VFW, Руководство по эксплуатации

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9.6 Operation via tractor control units
If the tanker does not feature a hydraulic control block, all functions are operated directly via tractor
control units.
Summary of tank functions with pressure sequence valve:
If a pressure sequence valve is installed, the following 3 functions can
be controlled with one tractor control unit:

Suction nozzle UP/DOWN

Suction nozzle valve

Compressor changeover
Fig. 38
:
Hydraulic connection / pressure sequence
valve
Using the existing stopcocks, you can preselect whether one of these
functions is to be performed individually when actuated via the tractor
control unit, or whether all functions are to be carried out consecutively.
Fig. 39
:
Stopcocks
The functions are performed consecutively when the required pressure is reached.
If oil pressure is applied in direction 1 on the tractor control unit (all
stopcocks open on the pressure sequence valve), the functions are
carried out in the following order:
1. Hydraulic compressor changeover switches to suction.
2. The suction nozzle lowers itself.
Fig. 40
:
Hydraulic connection
Fig. 41
:
Hydr. compressor changeover
Fig. 42
:
Suction nozzle