Process Technology LUFRAN Instruction page 89

Maintenance Procedures (Continued):
Procedure M8-2: Cooling Fan Replacement Procedure:
Cooling fan located in the electrical side of the cabinet:
1) Press the DISABLE HEATER button on the OIP to allow the unit to cool to ambient
inlet temperature. This will also prevent the heaters from engaging.
2) Turn OFF Power to the unit.
3) Open the front cabinet door.
4) Locate the power wires going from the cooling fan to the terminal blocks on the
ground plate. Refer to the electrical prints of the unit for the correct terminal block
numbers. Disconnect the fan wires from the terminal blocks.
5) Remove the cooling fan and fan guard from the sidewall of the cabinet.
6) Attach the replacement fan and fan guard to the side of the cabinet.
7) Re-connect the cooling fan wires to the terminal blocks.
8) Remove lockout-tagout items. Power up the unit. Confirm that the replacement fan
is operating.
M-43-01
Revision - Date: 08 – 04/06/15
Verify that the electrical supply is shut off, and
any necessary lockout/tagout devices are
properly installed.
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Lufran Single Outlet Manual