CPS SCA25KTL-DO/US-208 - Page 66

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DANGER:
Disconnect the inverter from the AC grid and PV modules before
removing covers or opening the equipment. Wait at least 5 minutes after
disconnecting from the DC and AC sources before servicing or
maintaining the inverter. Ensure hazardous high voltage and energy
inside the inverter has been discharged prior to servicing.
If there are multiple inverters in the RS485 network, the selector switch S1
of the last inverter in the daisy-chain should be in ON position, to have the
120Ω terminal resistor enabled. The selector switch S1 of all other inverters
should be in the OFF position to disable the terminal resistor.