Simrad SC90, Руководство по установке

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419050/B
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2 Lower the gate valve down into the hull unit compartment, but stop when the unit is
a few centimetres above the mounting flange.
Note
Do not damage the mating surfaces on the valve, the end switches, or (if relevant)
the hydraulic actuator.
3 Verify that the mating surface on the valve is clean and undamaged.
4 Prepare the mounting flange.
a Remove the protective cover from the mating surface on the mounting flange.
b Verify that the mating surface on the mounting flange is clean and undamaged.
c Wipe a thin film of silicone grease on the O-ring and place it in the groove on
the mounting flange.
5 Attach the nuts and washers while the gate valve is still suspended.
Due to the limited space, it may be difficult to enter and/or tighten some of the nuts.
An alternative is then to use Loctite 270 or similar.
6 Lubricate the threads with a high grade commercial anti-seize lubricant.
7 Lower the valve carefully onto the mounting flange while tightening the nuts.
8 Verify that the valve is orientated and aligned correctly.
9 Disconnect and remove the tackles from the gate valve.
10 Tighten the nuts to torque 472 Nm.
Installing the transducer dock
The transducer dock is mounted on the top of the gate valve. The top mating surface
is in parallel with the sea surface during normal operating conditions. The transducer
dock protects the transducer when the SC90 is not used.
Prerequisites
This task must take place in dry dock. The shipyard must provide all necessary tools and
manpower. The following specific items are required for this task:
• Silicone grease
• Anti-seize lubricant
• Torque wrench
• Lifting arrangement
• O-ring
• Mounting hardware
Installing the optional gate valve DN350