Figure 9 — fan assembly - screw removal, Figure 10 — fan assembly, Figure 9 — 4kw rectifier fan removal – Alpha Technologies Cordex HP CXRF 48-12kW User Manual
Page 37: Figure 10 — 4kw rectifier fan filter removal
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9400000-J0 Rev C
10.4.2 12kW Rectifier Fan Replacement
Refer to "2.3 Part Numbers and List Options" on page 8 for the part number of the replacement fan.
1. Switch off the unit and unscrew the front fastener that secures the power module to the shelf.
2. Remove the eight screws shown in Figure 11
Side screw (1)
Bottom screws (3)
Figure 11 — Fan assembly - screw removal
3. Disconnect the fan cables and remove the fan assembly from the rectifier.
4. Remove the two screws that secure the failed fan to the panel.
5. Note the direction of the airflow and remove the fan.
6. Inspect the fan filter and replace if necessary.- see Figure 10
7. Install the replacement fans following the preceding steps in reverse order.
Figure 12 — Fan assembly
Top screws (3)
Side screw (1)