Fan Control - Kemppi FASTMIG X 450 Service Manual

10.7. Fan control

Power source has two fans which are controlled by the microcontroller
•
Fans are started and stopped when:
•
o Fan1 starts 5s delay and fan2 7s delay from the welding start. Power source calculates time integral of the
welding current. This integral defines post run time of the fans. Minimum post run time is 20s maximum
5min
o MMA and Service-mode fan1 is always on. Fan2 starts 7s delay from the welding start. Power source calcu-
lates time integral of the welding current. This integral defines post run time of the fan2. Minimum post run
time is 20s maximum 5min
Fans are on always when power source over temperature error is on
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Kemppi OY
SERVICE MANUAL
FASTMIG X
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