Local Operation From Imo Control Cabinet - Kongsberg Frydenbo IRV-2 Maintenance Manual

Maintenance Manual
3. Stop pump 1, and apply the direction order again, the same rudder response is expected.
4. Return system to automatic mode by deselecting Manual By-pass System 1 push button.
Manual By-pass system 2
Prior to the test both pumps shall be running.
1. By activation of push button, "Manual By-pass System 2". The steering gear half connected to
pump 2 is by-passed and the steering gear operated by pump 1 only. Indication, "System
Isolated" and "System 2 By-passed" shall illuminate.
2. Apply a direction order, first to port and then to starboard, notice the rudder movement.
Expected outcome: rudder movement shall be at expected speed for two pumps operation. Available
torque is only half.
3. Stop pump 2, and apply the direction order again, the same rudder response is expected.
4. Return system to automatic mode by deselecting Manual By-pass System 2 push button.
11.14.2
If the manual control from the bridge panel is out of function, the isolation and by-pass system can
be activated from the "By-pass & Sep. System" selector switch on the IMO Control Cabinet. To verify
the function, please follow the procedure below.
Selector switch pos. 1 Auto/Remote
System operates automatically by monitoring of the oil level, or from the bridge manual operation
Selector switch pos. 2 System Disconnect
System is switched off.
Selector switch pos. 3 Isolating Mode Locked
Prior to the test, establish communication with the bridge, keep pump 1 running.
1. By the mode selector, select position 3, "Isolation Mode Locked". The system will enable
isolation mode, both pumps shall be brought into operation.
2. Ask bridge to apply direction order, first to port and then to starboard, notice the rudder
movement.
Expected outcome: rudder movement shall be at expected speed for two pump operation.
3. Return selector switch to position 1, ask bridge to stop pump 1 and start pump 2. Repeat the
test from point 1.
4. Return selector switch to position 1.
Selector switch pos. 4 By-pass System 1 Locked
Prior to the test, establish communication with the bridge, and keep both pumps running and NFU
steering mode activated.
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Local Operation from IMO Control Cabinet

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