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2.9
c
/
leaninG
checkinG or rePlacinG the fan
PERIODIC CLEANING
Every 6-12 months (depending on the dust level of the installation) blow a compressed air jet downward through the upper rectangular
cooling grilles (on the side opposite the fan).
This will clean the internal heat dissipater and the cooling fan.
IN CASE OF OVERHEAT ALARM
If periodic cleaning does not eliminate the problem, perform the following operations after first checking that the GFW has been turned
off and cut off from the electrical power supply to ensure the operator's safety:
a. Extract the 24V power supply connector from the fan.
b. Use a crosshead screwdriver to unscrew the two screws holding the fan in place (see drawing ).
c. Extract the fan, complete with its protective grid, and inspect.
d. Clean or replace the fan.
CAUTION: before putting the fan back into the product, make sure that the arrow showing the direction of the air flow on the fan
is pointing toward the dissipater.
e. Insert the fan, complete with its protective grid, centring it on the two reference pins.
f. Screw in the two screws fixing it in place with a crosshead screwdriver, tightening to a torque of 0.8 Nm.
g. Insert the fan's 24V power supply connector.
h. Turn on the power to the product and check that the fan turns in the right direction.
Figure 5
80999D_MHW_GFW 400-600A_07-2020_ENG
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