HPU400 Hydraulic Power Units
Kobelt Manufacturing Co. Ltd.
Rev A
MNL_HPU400
16 of 33
4
C
OMMISSIONING
4.1
H
YDRAULIC
F
ILL
&
B
LEED
After the hydraulic and the electrical connections have been completed, open all isolating
valves and allow enough time for the pump and lines to fill with oil. Start the pump and
observe the pressure gauge. There should be some pressure showing (approx. 40-80psi). If
not, check the rotation of the pump motor (clockwise as viewed from the motor end). If the
rotation is wrong check the polarity of the power connection to terminals 1 and 2. All pumps
are leak and run tested prior to shipment.
Check that the high-speed solenoid is not activated. Operate the 4-way solenoid valve to
check that the port and starboard directions are correct. If they are wrong, reverse
connections to Terminals 6 and 7. Check the hard over to hard over speed of the rudder and
adjust the low speed adjustment for the appropriate speed. Clockwise to decrease and
counter clockwise to increase. Once the low speed adjustment is complete activate the high-
speed valve and check the hard over to hard over speed. Adjust the high-speed valve to
obtain the desired speed. If after the high-speed adjustment is complete you adjust the low
speed, the high speed should be rechecked. The pressure relief is factory set (normally 750
psi) and should not require adjustment.
The pressure relief is factory set at 750 psi and should not require
adjustment.
4.2
E
LECTRICAL
C
HECK
Ensure that the cover is installed and secured on the value junction
enclosure and all pigtail connections have been properly terminated
and enclosed before powering on the HM450.
Confirm that the electrical connections to the HPU200 pump-set have been made correctly
and correspond to the requirements of your system installation.
