10 Maintenance
SMA Solar Technology AG
Operating manual
33
NA-BOX-12-3-20-BE-en-12
8. Check all insulated conductors, terminals and fuse elements in the product for discoloration or changes in the
appearance of the insulation.
9. If any insulated conductors, terminals or fuse elements in the product are discolored or have changed in
appearance, contact Service (see Section 13, page 38).
10. Check whether the product is free of corrosion damage.
11. If the product displays minor corrosion damage, treat the affected area as follows:
• Sand the area.
• Clean the area with degreaser.
• Paint the area.
12. If the product displays large-scale corrosion damage, treat the entire surface as follows:
• Sand the surface.
• Clean the entire surface with degreaser.
• Paint the entire surface.
13. Check whether all seals on the cabinet door are undamaged.
14. If a seal is damaged, replace the seal.
15. Apply talcum, petroleum jelly or wax to seals. This will prevent frost damage.
