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6 - Fan Motor asseMbLy
6.1 - description
The 4GM has a double inlet fan to give very high available
static pressure. The fan motor is supplied at 30 V. Its speed
is varied by a numeric controller card.
6.2 - Fan motor removal
WARNING: Switch off the electrical power supply before
doing any work on the unit.
For the fan motor assembly to be removed, the 4GM itself
must first be removed. The assembly is accessed through
the removable unit side which must therefore be removed.
Removal procedure:
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Re-installation procedure:
•
NOTE: When re-installing the removable side of the unit,
ensure that the coil is correctly positioned on the panel.
Screws 'A'
Remove the 4GM unit as described in the chapter
'Removing a 4GM unit'.
Lay the module on its non-removable side (fixed by
rivets).
Uninstall the removable side, fixed by screws.
Disconnect the quick connect power supply cable for
the fan motor.
Disconnect the water piping from the coil side (be
careful not to lose the joints).
Unscrew the two screws (A) and remove the fan motor
assembly.
Follow the instructions above in reverse order, and
refer to the unit 'installation' procedure.
15
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