SMA SC 500HE-20 Maintenance Manua - Manual (Page 28)

6 Maintenance Under Voltage-Free Conditions SMA Solar Technology AG
28 SC500-800HE20-WH-en-10 Maintenance Manual
2. Check whether the seals in the sealing area show signs of damage. Tip: the sealing area is not
visible when the door is closed.
If seals are damaged, contact the SMA Service Line.
3. Maintain the seals using talcum power, petroleum jelly or wax. This prevents frost damage.
4. If the side panels are disassembled: check whether the seals in the side panels show any signs
of damage in the sealing area.
If seals are damaged, contact the SMA Service Line.
6.5.2 Checking the Locking Devices and Hinges
Required maintenance material (not included in the scope of delivery):
☐ A suitable, water-free and heat-resistant lubricant, e.g. WD40.
☐ Non-lubricating antifreeze, e.g. PS88.
2. Check that the doors latch easily. Open and shut the doors several times in the process.
If the doors do not latch easily, lubricate all moving parts of the latch.
3. Check that the doors can be held in place.
If the doors cannot be held in place, lubricate the door stops.
4. Check that the door hinges move easily.
If the door hinges do not move easily, lubricate them.
5. Lubricate all moving latch elements and movement points.
6. If the inverter is installed in a region where below-freezing temperatures occur, treat the profile
cylinder of the door lock and the key switch with a non-lubricating antifreeze to prevent them
freezing over.
6.5.3 Checking the Surface of the Switch Cabinet
2. Check surfaces for signs of damage or corrosion.
If surfaces are damaged, repair them without delay or within 3 weeks at the latest.
If surfaces are corroded, repair them without delay or within 3 weeks at the latest.
1. %"/(&3
Danger to life from electric shock or electric arc when touching live components.
• Disconnect the inverter (see Section 6.1).
1. %"/(&3
Danger to life from electric shock or electric arc when touching live components.
• Disconnect the inverter (see Section 6.1).