OPERATION 3.6 MACHINERY HOUSE
207
3.6.3 CONTROL AND FILTER PANEL OF REAR- AND FRONT POWER UNIT
Legend for illustration Z22479
Operation Modes of Pump Regulation System
The standard operation mode of the pump control system is the
Electronic Operation Mode.
For testing purposes the pump control system can be changed to
the hydraulic operation mode. In case of a failure in the electronic
control system the hydraulic operation mode can be used to con-
tinue operation.
The lever positions for electronic and hydraulic operation mode
are marked with corresponding symbols at levers (1) and (2).
(Rr.1) Control and filter panel of rear power unit, engine 1
(Fr.2) Control and filter panel of front power unit, engine 2
(1) Change over valve for operation mode of pump con-
trol system for rear power unit, engine 1.
(2) Change over valve for operation mode of pump con-
trol system for front power unit, engine 2.
(3) Pressure oil filter for fan drive hydraulic motor of
coolant radiator for rear engine "1". Filter restriction
monitored by differential pressure switch B21-1.
(4) Pressure oil filter for pump distributor gear PTO "1"
lubricating oil. Filter restriction monitored by differen-
tial pressure switch B27-1.
(5) Pressure oil filter for fan drive motor of hydraulic oil
cooler "1". Filter restriction monitored by differential
pressure switch B28-1.
(6) Pressure oil filter for pilot- and pump control oil cir-
cuit. Filter restriction monitored by differential pres-
sure switch B22.
(7) Pressure oil filter for fan drive hydraulic motor of
coolant radiator for front engine "2". Filter restriction
monitored by differential pressure switch B21-2.
(8) Pressure oil filter for pump distributor gear PTO "2"
lubricating oil. Filter restriction monitored by differen-
tial pressure switch B27-2.
(9) Pressure oil filter for fan drive motor of hydraulic oil
cooler "2". Filter restriction monitored by differential
pressure switch B28-2.
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