SMA SC 500CP-10-JP Maintenance Manual - Manual (Page 31)

SMA Solar Technology AG 6 Maintenance under Voltage-Free Conditions
Maintenance Manual SCCP-JP-WA-A4-en-12 31
Requirement:
☐ The circuit breaker for the external supply voltage must be switched on.
Procedure:
1. Switch the inverter to Stop.
2. Open the inverter doors.
3. Set the hygrostat to the minimum value. To do this, pull the selector switch out slightly. Tip: the hygrostat is adjusted
correctly once the relay of the hygrostat emits an audible click.
4. Check whether the heating elements are radiating heat after a delay time of five minutes.
If the heating elements are not radiating heat, contact the SMA Service Line.
5. Reset the hygrostat to the initial value. To do this, press the selector switch back towards the hygrostat. The initial
value of the hygrostat is indicated in the circuit diagram. The standard values are marked in white on the selector
switch and the hygrostat. The standard value of the hygrostat is set when both markings are aligned.
6. Close the inverter doors.
6.7.4 Checking the Function of the UPS
Figure 9: Position of the UPS in the inverter
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Risk of burns due to hot heating elements
During the functional test, the heating element gets hot. There is a risk of burns if you touch the heating element without
safety gloves.
• Do not touch heating elements with bare hands.
• Wear personal protective equipment.
• Always maintain a suitable safety distance when checking the function of the heating elements.