When the ESS handle is pulled during disconnection as described in the installation manual, in very rare cases the handle's contact element may loosen and remain in the device. The handle may only be pulled by trained, electrically skilled persons and exclusively during service or maintenance. There is no danger when the procedure described in the installation manual is followed. FAILURE TO COMPLY with this procedure can lead to the following, if the malfunction occurs:
- DC side disconnection is not correctly performed and voltage is present in the device,
- Solely during an attempt to remove the contact element from the inverter, live parts could be touched. In certain cases, this can lead to life-threatening injuries.
If all disconnection measures are followed (disconnect AC side, pull ESS, disconnect DC plug connector, wait 10 minutes), the malfunction does not present any danger.
When all steps outlined in the manual for disconnection are fully complied with, the contact element in the device can be removed safely with insulated pliers.