MAX POWER
OIL RESERVOIR
The reservoir should be mounted as close to the pump as possible and must always
be higher than any other component in the system. The reservoir must be mounted
at a height that allows the breather to be situated 500 mm, (18
″
) or higher, above the
waterline. If this is not possible, then the breather can be removed and installed on
the end of an extension pipe or hose.
Mounting the reservoir too low could result in oil draining back, or overflowing the
tank. Be sure to allow enough space above the reservoir to service the filter.
If MAX POWER does not supply the reservoir, then provide a return filter of 60
microns and a suction strainer.
CAUTION the oil tank must be installed above the pump so as to gravity feed to the
pump.
The thrusters’ motor case drain must return directly to the top of the tank
. With
no filters check valves or other drain lines connected to it. Backpressure on the RD
(drain line) will cause damage to the hydraulic motor.
The reservoir must be flushed after installation.
DIRECTIONAL CONTROL VALVE BLOCK
The directional control valve (DCV) must be placed between the pump and the
RETRACT unit. it is recommended to locate the DCV as near to the RETRACT as
possible (in an accessible and dry place) it is preferable for maintenance reasons
that the unit is mounted horizontally. The valve block is fitted with a pressure relief
valve that has been factory tested and set to your thruster’s maximum pressure.
ELECTRO HYDRAULIC PUMP (EHP) INSTALLATION
The Electro hydraulic pump should be as
close as possible to the batteries
to
reduce voltage drop in the electrical lines.
Other important considerations in EHP installation are
- Sufficient cooling air available to the motor
- Proper maintenance access
- A dry well ventilated position
- Secure fixation support and straps to prevent movement in any sea
condition
Hydraulic pumps must never be allowed to run dry, not even for a few seconds,
prime circuit before start up.
8
INSTALLATION MANUAL RETRACT R 300
