476671/B
207
Initial safety check of the Motor Control Unit
Safety is always important when working on the Hull Unit and the Motor Control Unit.
High voltages are used. The initial settings must be verified before the Hull Unit can be
started for the first time.
Prerequisites
• The MF90 system is turned off.
• The circuit breaker for the 3-phase AC power is disengaged.
• All cable connections are made.
You must be equipped with a standard set of tools. This tool set must comprise the normal
tools for electronic testing, as well as the necessary tools for relevant disassembly/assembly
of parts for test access. Each tool must be provided in various sizes. We recommend that all
tools are demagnetized to protect your equipment.
Context
High voltages are used. This equipment must be serviced only by qualified personnel
familiar with high-voltage equipment and the potential hazards involved. Failure to observe
this precaution could result in bodily injury.
Procedure
1
Make sure that the 3-phase AC power is disconnected, and that the circuit breakers are
disengaged in the ship’s fuse box.
2
Use a spanner to open the door on the Motor Control Unit.
3
Locate the
Motor Protecting Switch
(S301). Check that the switch is in position
OFF
.
4
Locate the
Hoist/Lower Switch
(S302). Check that the switch is in position
STOP
.
Result
Requirements
Results
The initial safety check of the Motor Control Unit is accepted.
Date and signature:
Related topics
Setting to work, page 186
Starting up the hull unit, page 201
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