Maintenance manual
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7.8
Manoeuvring time test - with frequency controlled pumps
For the purpose of confirming the healthy condition of the internal seal of the steering gear unit, the
following test procedure is to be followed. The procedure will rely on timing the movement going from
30 deg rudder position on one side to 30 deg on the opposite side.
Note!
Performance of this test to be managed by the Chief Engineer when vessel is lying still in sheltered waters. The test is
to be done first with Pump no 1 and then again with pump no 2.
1.
Ensure that all valves connected to the Expansion tank are in OPEN position.
2.
Preparing for test with Pump 1 at Motor Controller Cabinet in Steering gear room:
•
Pump no. 2: Turn selector switch to Stop
•
Pump no. 1: Turn selector switch to Local Control
•
Use Emergency Steering push buttons (3) to operate the steering
gear with Pump no.1.
3.
Start test:
•
Move the rudder to a position about 33 deg angle to one side.
•
Start moving the rudder to the other side by using push buttons (3).
•
Start timing when rudder passes 30 deg angle and stop timing when
position reaches 30 deg on the opposite side. Release push button.
4.
Repeat step 3 in opposite direction.
5.
Preparing for test with Pump 2 Motor Controller Cabinet in steering gear room:
•
Pump no. 1 : Turn selector switch to Stop
•
Pump no. 2: Turn selector switch to Local Control
•
Use Emergency Steering push buttons (3) to operate the steering gear.
6.
Ensure that all valves connected to Expansion tank are in OPEN position after completing the test.
TEST RESULTS:
To be recorded in the table in chapter 7.9 Feedback form of this document, test #1 and #2, when
requested or if any alarms occure send a copy to Kongsberg Maritime.
For vessels with two steering gears, please perform one test per unit!
Motor Controller Cabinet
