8 Maintenance
SMA Solar Technology AG
Installation Manual 59PPM-10-IA-en-16
8 Maintenance
8.1 General Maintenance Work
DANGER
Danger to life due to electric shock when live components or cables are touched
High voltages are present in the conductive components or cables of the product. Touching live parts and cables
results in death or lethal injuries due to electric shock.
• Do not touch non-insulated parts or cables.
• Before performing any work or opening the product, short-circuit the secondary circuits of the current
transformers through an external short circuit device, externally disconnect the supply voltage and cables for
the current and voltage measurement.
• Observe all safety information on components associated with the product.
• Wear suitable personal protective equipment for all work on the product.
• Always perform all work in accordance with the locally applicable standards, directives and laws.
• Cover or isolate all live components.
NOTICE
Damage to the product due to cleaning agents
The use of cleaning agents may cause damage to the product and its components.
The general maintenance work must be performed every 12months.
Adverse ambient conditions reduce maintenance intervals
Location and ambient conditions influence the maintenance intervals. Note that cleaning and corrosion protection
may be required more frequently depending on the conditions at the installation site.
• If the product is subject to adverse ambient conditions, a reduction of the maintenance intervals is
recommended. Above all, the intervals between cleaning work and corrosion protection should be reduced.
• SMA recommends a monthly optical inspection to determine the maintenance requirement.
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. It is taken for granted that standard tools and materials such as torque wrenches, one-
contact voltage testers and wrenches will be available for all maintenance operations.
☐ To repair corrosion damage: touch-up sticks or, alternatively, 2K-PUR acrylic paint (RAL color: 7035)
☐ Abrasive cloth
☐ Degreaser
☐ For maintaining the seals: talcum, petroleum jelly or wax
Procedure:
1. Disconnect the product from voltage sources (see Section7, page58).
2. Check whether the inside of the product is soiled or moist.
3. If the interior of the product is dirty, clean the product.
4. If the interior of the product is moist or water has accumulated, dry the product out.
5. Check whether the product is free of corrosion damage.
6. If the product displays corrosion damage, treat the affected area as follows:
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