SMA SC 500HE-20 Maintenance Manua - Manual (Page 32)

6 Maintenance Under Voltage-Free Conditions SMA Solar Technology AG
32 SC500-800HE20-WH-en-10 Maintenance Manual
6.8.2 Checking the Fans
☐ The miniature circuit-breaker of the external voltage supply is switched off.
1. Open the doors.
2. Switch on the miniature circuit-breaker of the
external voltage supply.
☑ The fans should soon start to run.
✖ Have the fans failed to start?
• Contact the SMA Service Line.
3. Close the doors.
6.8.3 Checking the Heating Element and Hygrostat
$"65*0/
Risk of burns due to hot heating elements.
During the function test, the heating element will become hot. There is a risk of burns if you touch the
heating element without protective gloves on.
• Do not touch heating elements with bare hands.
• Wear personal protective equipment.
• Always maintain a safe distance when checking the function of heating elements.
Low humidity
If the humidity is below 50%, you will not be able to perform the function test since the minimum
value of the hygrostat is 50%.