Cleaning The Air Duct And Insect Screens - SMA SUNNY CENTRAL 500CP-US/CA Maintenance Manual

7 Maintenance in Disconnected State
Procedure:
1.
Danger to life due to electric shock or electric arc by touching live components
• Disconnect the inverter and wait 15 minutes until the capacitors have discharged completely (see Section 6).
2. Disassemble the panels (see Section 7.2).
3. Remove the ventilation plate from the inverter cabinet. Grasp under
the ventilation plate and press upwards in the middle when
removing.
4. Clean the ventilation plate with a brush or vacuum.
5. Push the ventilation plate into the inverter cabinet with the filter frame
facing the rear panel; to do this, grip under the ventilation plate and
apply an upward pressure in the middle.
6. Mount the panels (see Section 7.13).

7.4 Cleaning the Air Duct and Insect Screens

Damage to the inverter due to impaired air circulation
Impaired air circulation can increase the internal temperature, reduce the electrical endurance of the components and
result in operational faults.
• Clean the air duct and insect screens more frequently in cases where there is high sand or dust content in the air
(see maintenance report).
30 SCCP-US-WH-US_en-31
SMA America, LLC
Maintenance Manual