HPU100 Hydraulic Power Units
Kobelt Manufacturing Co. Ltd.
Rev C
MNL-HPU100
11 of 32
The piping to the steering cylinder should be minimum 1/4
” nominal size with a suitable wall
thickness to safely withstand the operating pressure. The Port and Starboard steering lines
should have a pressure rating of 1000 psi minimum. Secure the piping against vibration with
pipe clamps spaced every 3 feet [1 m].
The connections to the hydraulic manifold must be made by hoses of suitable rating to
accommodate any movements, vibration or thermal strain.
Figure 3: Connections in Top Face of Hydraulic Manifold
Three (3) hydraulic connections are required:
•
Connect two
“
Cylinder ports
”
to the two steering cylinders. It is not critical to identify
which of the steering lines is Port or Starboard as most new autopilots will determine
the pump direction and program the drive outputs to suit.
•
Connect the the third port to Header tank or helm pump case port.
3.3
E
LECTRICAL
The pumpset units are manufactured for operation from either 12 VDC or 24 VDC dependent
on the model number ordered. The Electrical Junction Box contains a remote start relay
(voltage dependent), a thermal overload breaker, and a terminal strip for external
connections. The DC start relay can be activated with a positive or negative switched signal.
