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80960G_MHW_GTF_05-2019_ENG
2.9 cleaninG/checkinG or rePlacinG the fan Gtf 150-250a
Figure 9
1 Fan
2 Lower grille (ventilation intake)
3 Detail of insertion of fan connector in
PCB
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
Before and during the inspection/maintenance cut power to the fan controller and verify that the system is isolated for
operator safety. If periodic cleaning does not eliminate the problem, do as follows:
a Remove the fan support grille by detaching the two support tabs
b Disconnect the fan connector from the board
c Check the condition of the fan
d Clean or replace the fan
Attention: check that the arrow (on the fan indicating the direction of air flow is pointing to the heat sink
e Insert the connector into the board
f Insert the fan support grille until it attaches
g Power up the device and check fan rotation when at least one load is on
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