V-TAC VT-6605305 Manuel D'instructions page 21

MAINTENANCE GUIDE
CLEAN THE INVERTER
Cleaning procedure is as follows:
(1) Disconnect the input and output switches.
(2) Wait ten minutes.
(3) Clean the surface and air inlet/outlet of the inverter with soft brush or vacuum
cleaner;
(4) Repeat inspection before operation - operating content.
(5) Restart the inverter.
CLEAN THE FAN (FOR 8KW AND 10KW INVERTER)
The cleaning steps are listed below:
(1) Disconnect the connection on input and output side;
(2) Wait for ten minutes;
(3) Disassemble the inverter in the same process with the installation procedures in
section Instalaltion, but in reverse order;
(4) Remove the screws and covers of cooling bin or fan box
Figure 20 Disassemble the cooling bin
Figure 21 Disassemble the fan box