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Protect PV.500 Maintenance and Servicing
12 of 14 80000031355 BAL
4.6.1 Removing and Installing the Fans
Risk of injury due to rotating fans!
The fans of the INV control cabinet are freely accessible.
Î Never reach into rotating fans.
Î When setting up any system, ensure that the fans can-
not be touched.
When fans are replaced, the starting capacitors must be replaced
too.
Removing the fan:
i
The fans switch on and off depending on the temperature.
Even after the system has been switched off the fans may
continue to run for a short time, until the unit temperature
drops. Do not remove connectors under load, i.e. when
the fans are running.
The power supply to the motors must be isolated before
any work is carried out on the fans!
Î Disconnect the corresponding connectors on the "fan monitor-
ing" assemblies.
INV control cabinet M1/X201 (DC/AC cabinet)
M2/A91.1 X1
M3/A91.1 X2
The fans in the INV control cabinet are located in the power sec-
tion's air duct and on the roof of the cabinet.
Stack fan M1 is located in the air duct of the INV power section at
the bottom of the cabinet.
Fans are replaced as described below:
Î Unscrew the cover from the air duct.
Î Disconnect the temperature sensor.
Î Unscrew the 6 fixing bolts on the fan holder and remove the
2 nuts; the fan is then resting on threaded bolts.
Î Pull the fan assembly out of the air duct towards you and set
it down.
Î Detach the fan connections and disconnect the cables.
Installing the fan:
Î Install the fan by repeating these steps in reverse order.
Î Switch on the system.
Î Check that the fan is functioning correctly.
CAUTION
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