10.2.3.4 Sunny Central
Required maintenance materials and tools:
☐ A suitable water-free, heat-resistant lubricant
☐ A testing device approved by the manufacturer of the AC disconnection unit, e.g. TT1 by ABB
☐ Talcum, petroleum jelly or wax for maintaining the seals
☐ Use touch-up sticks, paint brushes, cans of spray paint or 2K-PUR acrylic paint in the appropriate RAL color to
repair small-area surface damage.
☐ Use touch-up paint or 2K-PUR acrylic paint in the appropriate RAL color to repair large-area surface damage.
☐ Abrasive cloth
☐ Degreaser
☐ A surge arrester testing device approved by the manufacturer of the surge arrester such as the PM20 by
DEHN+SÖHNEGmbH+Co.KG
Maintenance work depending on the condition of the inverter
Maintenance with DC voltage present
Task See
Reading off error messages and warnings Section9.3.2, page119
Checking the AC disconnection unit Section10.5.11, page154
Maintenance under voltage-free conditions
Task See
Performing an optical inspection Section10.4.1, page140
Cleaning the ventilation plate Section10.5.3, page146
Cleaning the air duct and ventilation grids Section10.5.2, page146
Checking the interior Section10.4.2, page141
Checking the fuses/disconnection blades Section10.5.4, page147
Checking the bolted connections Section10.5.5, page147
Checking the surge arrester Section10.5.6, page148
Checking the labels Section10.5.8, page150
Checking the inverter surface Section10.4.5, page143
Maintenance work with supply voltage present
Task See
Checking the fans Section10.5.7, page149
Checking the heating element and the hygrostat Section10.5.9, page152
Checking the Function of the UPS Section10.5.10, page153
10 Maintenance
SMA Solar Technology AG
System Manual 137MVPS22JP-SH-en-11