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34 Mechanical installation
Follow the below guidelines:
•
To prevent any risk of corrosion, install the MVS higher than its surroundings so that
surface water will not collect around its perimeter.
•
Tilt the surface of the surrounding ground at least 50 mm per meter (two inches per 40
in). This ensures that surface water flows away from the MVS.
•
Consider local conditions, such as soil type, frost protection, rain amounts, etc. There
needs to be at least 300 + 200 mm gravel under the foundation.
•
Consider the required cable bending radius and installation room.
•
The built-on site user platform around the MVS must be at least one meter (40 in) wide.
If it is narrower, service work can be difficult.
•
The entire perimeter of the MVS must rest on the foundation.
•
Check the load carrying capacity of the ground and potential local special requirements
(for example, earthquake or typhoon anchoring) of the construction area. Use materials
suitable for the local conditions and requirements.
Placing the MVS on the foundation
WARNING!
Before lifting the MVS onto the foundation, make sure the foundation is aligned
well, hardened and stable.
1. Measure the level of the foundation and the tilting of the surface of the surrounding
ground around the foundation. Obey the
2. Make sure the foundation below the MVS is leveled. Inclination up to 0.1 degrees is
permitted.
3. Lift the MVS onto the foundation. Obey the instructions in section
Make sure that the foundation does not move. Also make sure that the station is stable
and in direct contact with the foundation.
4. When the MVS is placed on the foundation, measure the height and inclination of the
MVS. Check the slope of the surface of the surrounding ground around the MVS.
Foundation guidelines (page
33).
Lifting (page
29).
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