Instruction Manual
Contents
1 | INTRODUCTION | 5 | |
| 1.1 | General | 5 |
| 1.2 | Hydraulic steering gear suitable for the RPU80/RPU160/RPU300 | 7 |
2 | MEASUREMENTS AND CALCULATIONS FOR APPLYING THE RPU.12 | ||
| 2.1 | Calculation of cylinder volume | 12 |
| 2.2 | Minimum rudder time adjustment | 12 |
3 | DESCRIPTION OF RPU80/RPU160/RPU300 | 14 | |
| 3.1 | Construction | 14 |
| 3.2 | Principle of operation (ref. figure | 15 |
| 3.3 | Valve block | 16 |
| 3.4 | Gear pump | 16 |
| 3.5 | Pressure operated | 16 |
| 3.6 | Suction valves on outlet C | 16 |
| 3.7 | Slide (10) | 16 |
| 3.8 | Pipe connections | 17 |
4 | INSTALLATION | 18 | |
| 4.1 | Mechanical Installation | 18 |
| 4.2 | Electrical installation | 22 |
5 | PREPARATION AND TESTING | 23 | |
| 5.1 | Oil filling and bleeding | 23 |
| 5.2 | Testing | 23 |
6 | MAINTENANCE | 24 | |
| 6.1 | Dismantling | 24 |
| 6.2 | Electric motor | 24 |
| 6.3 | Valve block | 24 |
7 | FAULT TRACING | 25 | |
| 7.1 | Pump (motor) is not running/not responding to rudder command | 25 |
| 7.2 | The piston rod does not move with rudder commands | 25 |
| 7.3 | Excessive noise from the pump unit | 25 |
7.4The rudder does not stay in
due to water pressure on the rudder | 26 | |
7.5 | Steering wheel is turning while pump unit is operated | 26 |
7.6 | The piston rod of the rudder cylinder does not move smoothly | 26 |
7.7 | Rudder movement stops as water pressure on the rudder increases | 27 |
20220422N |
| 3 |
