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2. Clean the damaged area and its surroundings using a cloth or blower.
3. If necessary, apply putty to even out the surface.
4. Coat the damaged area with an epoxy primer. Let it dry thoroughly (for at least 24 hours).
5. Apply first layer of paint to the damaged area. Let it dry thoroughly (for at least 12 hours).
6. Apply second layer of paint to the damaged area.
7. Apply final layer (e.g. Aliphatic Polyurethane coating).
￭
Maintenance of Zinc coated surfaces
Pay attention to doors and lower parts of the walls. These areas have potentially corrosive
elements such as dust and humidity.
If there is damage to the zinc-coating:
1. Carefully remove any rust with sandpaper.
2. Clean the damaged area and its surroundings.
3. Coat the damaged area with the zinc coating. Use Würth Zinc 300 for a thicker coat.
On large areas, you can use Würth Zinc Spray Perfect to ease the work and to get an
even surface.
Maintenance of grounding bars and points
￭
Tools
•
Steel wool
•
Ensto SR1 joint compound or equivalent
•
42839 Würth protective wax or equivalent
￭
Procedure
1. Examine the condition of the grounding bar and grounding cables in the MV switchgear
area. If there is any visible corrosion, remove the cables and remove the corrosion with
steel wool. Apply joint compound between the grounding bar and the joint surfaces of
the cable terminal.
2. Change the spring lock washers. Tighten the cables to the nominal torque values.
3. If corrosion is more, apply protective wax spray on the grounding bar and the cable
terminals.
Maintaining external hinges and locks
￭
Tools
•
Cleaning materials
•
Hinge lubricant, Würth HHS20000 0893 106 or equivalent
•
Lock lubricant, Würth maintenance spray 0893 051 or equivalent.
￭
Procedure
1. To maintain the external hinges and locks, use the recommended lubricants and lubricate
the locks and hinges.
WARNING! Do not use lubricants with silicone.
Maintenance 63
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