Function Test Of Imo System; Manual Operation Mode From Bridge - Kongsberg Frydenbo IRV-2 Maintenance Manual

Steering gear

Hide thumbs

Table of Contents

Maintenance Manual

To avoid any non-detectable system errors, all oil level sensors, valves and functions shall be checked

and maintained every month. The following procedure shall be carried out to ensure proper function

of the system. Prior to the function test it is recommended to perform a steering test with system

operating in normal mode, with single pump and dual pump operation.

11.14.1

Manual operation of the system can be performed from the bridge control panel. Push buttons are

fitted to enable the individual functions and to disable the system. The system mode selector shall be

in position 1, Automatic/remote control.

Manual Disconnection

By activating the push button Manual Disconnection, the system will be disabled, and monitoring of

hydraulic system is switched off. Indication "System Disconnected" shall illuminate.

Expected outcome: the steering will operate as normal but will not meet the IMO requirement.

Manual Isolation

Prior to the test, keep pump 1 running.

1. By activation of push button, "Manual Isolation". The system will enable isolation mode, both

pumps shall be brought into operation.

2. 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. Deselect Manual Isolation and stop the pump 1 and start pump 2. Repeat test from step 1.

4. Return system to automatic mode by deselecting Manual Isolation push button.

Manual By-pass system 1

Prior to the test both pumps shall be running.

By activation of push button, "Manual By-pass System 1". The steering gear half connected to

pump 1 is by-passed and the steering gear operated by pump 2 only. Indication, "System

Isolated" and "System 1 By-passed" shall illuminate.

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.

KONGSBERG PROPRIETARY. This document and its accompanying elements contain KONGSBERG

information which is proprietary and confidential. Any disclosure, copying, distribution or use is prohibited if not

otherwise explicitly agreed with KONGSBERG in writing. Any authorized reproduction, in whole or in part, must