SMA GRID CONNECT BOX 12 - Manual (Page 30)

10 Maintenance SMA Solar Technology AG
30 GRID-BOX-12-3-20-BE-en-10 Operating Manual
Required maintenance materials and tools:
Only those consumables and maintenance materials not normally included in the standard equipment of an electrically
qualified person are listed below. It is taken for granted that standard tools and materials such as torque wrenches are
available for all maintenance operations.
☐ To repair minor surface corrosion damage: touch-up sticks, paint brushes, spray paint or, alternatively, 2K-PUR
acrylic paint (RAL-Farbe: 7035)
☐ To repair large-surface corrosion damage: touch-up sticks or, alternatively, 2K-PUR acrylic paint (RAL-Farbe: 7035)
☐ Abrasive cloth
☐ Degreaser
☐ For maintaining the seals: talcum, petroleum jelly or wax
Maintenance activities
• Check whether the inside of the Grid Connect Box is soiled or damp.
If the inside of the Grid Connect Box is dirty, clean it.
If the inside of the Grid Connect Box is moist or water has accumulated, dry it out.
• Check all power cables of the Grid Connect Box for discoloration or changes in appearance of the insulation.
If any power cable is discolored or the insulation looks changed, replace the cable.
• Check all insulated conductors, terminals and fuse elements in the Grid Connect Box for discoloration or changes
in appearance of the insulation.
If any insulated conductors, terminals or fuse elements in the Grid Connect Box are discolored or changed, contact
the SMA Service Line (see Section 13, page 35).
• Check the Grid Connect Box for the presence of corrosion.
If the Grid Connect Box displays minor corrosion damage, treat the affected area as follows:
• Sand the area.
• Clean the area with degreaser.
• Paint the area.
If the Grid Connect Box displays large-scale corrosion damage, treat the entire surface as follows:
• Sand the surface.
• Clean the entire surface with degreaser.
• Paint the entire surface.
• Check all door seals for damage.
If a door seal is damaged, replace this seal.
• Apply talcum, petroleum jelly or wax to seals. This will prevent frost damage.