1) Position the inverter on it’s back side.
2) Unscrew the 4 bolts out of the rubber dampers on the bottom side and remove the outside frame.
3) Put the housing back on right and remove the screws of the housing U-shape cover plate and open the housing.
4) Disconnect the following wires from the inverter:
Input AC power L1+L2
Output power U + V + W
Ground wire
5) Detach the inverter and take it out.
6) Dril 5 holes in the bottom of the housing according drawing.
6) Detach the separation panel between inverter and transformer.
7) Replace the panel with the modified one with cooling fan.
8) Mount the inverter again and connect the mains supply L1 and L2 and the wires to the transformer
at the U, V and W terminal.
9) Connect the red wire from the ventilator to the P24 terminal and the black one to CM terminal.
10) Place all plastic covers back again to the inverter.
11) Perform a function test of inverter and check if blower is working. If yes.
12) Close metal housing of inverter.
Sept 2021 3
Working Instruction
