HRP05/HRP11/HRP17 Accu-Steer Pump-Set
Kobelt Manufacturing Co. Ltd.
Rev D
HRP07-HRP11-HRP17_MANUAL
7 of 28
2.1.1
Cylinder Compatibility
The HRP05/11/17 works with both balanced and unbalanced cylinders. When unbalanced
cylinders are used it is recommended that a vented header tank is used to allow for the
expansion and contraction from the unbalanced cylinder.
2.1.2
Duty Cycle
The HRP pump-sets are designed as an intermittently operated unit for normal steering
applications. High demand applications will over work the motor and cause over heating.
2.1.3
Temperature Limits
The motor temperature has a maximum limit of 248
o
F [120
o
C]. Allowing the temperature to
exceed this limit will permanently damage the motor windings.
The maximum oil temperature limit is 149
o
F [65
o
C].
Observe the operating temperature range of the unit (Table 1: HRP05/HRP11/HRP17
Technical Data). Do not operate the unit if the ambient temperature where the unit is
located exceeds this limit.
2.1.4
Pressure Range
The normal operating pressure of the unit is 0 to 500 psi. Avoid operating the unit against the
rudder stops for prolonged periods of time.
