Delta Electronics MVF2000 Series, Руководство по эксплуатации продукта

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6. Replace internal battry of HMI
Remove the screws at the back side of HMI and open the HMI back cover plate, as Fig.
10-5, replace the battery
（
3V lithiun battery, CR2032×1
）
.
Fig. 10-5 HMI internal battery changing
7. Replace the cooling fan

Cut off the system power according to 10-1 Standard maintenance process.

Take all the safety measures.

If an air duct is used to exhaust hot air outside the installation room, the interface of
the air duct shall be disassembled.

Remove and retain eight M6x16 hexagonal combination screws
①
from front outlet
bracket, and remove the bracket and louver.

Disassemble the connectors
②
.

Remove and retain eight M6x16 hexagonal combination screws
③
, and remove
the fan assembly.

Install the new fan assembly and assemble the connectors
②.

Fasten all screws in reverse sequence.

If there is an air duct, restore and fix the interface of the air duct.

Finish up the maintenance and replacement according to the above procedure
mentioned and detect whether the fan is in normal operation after power-on. Pay
special attention to the rotation direction of the fan, wherein the fan shall suck air
from the inlet window frame and blow air outwards from the top of the cabinet.