Fan Replacement - Black Box CRCW-12 User Manual

Chapter 5: Maintenance
Humidifier Drain Pump Replacement
The humidifier drain pump is located on a shelf beneath the humidifier assembly. To access the pump, the rear access panel must
be removed as described in Section 5.3.2.1.
Cut the wire-ties holding the clear plastic discharge line (reference Section 5.3.2.4). Remove the discharge line from the barbed
stub fitting. Release the cable retaining clip on the side of the pump and cut the wire-ties holding the cable loop. Remove the
pump from the shelf with the cable still attached and remove the cover to expose the wire terminals.
Remove the wires from the pump and remove the pump from the cabinet. Install the replacement pump in the same manner that
the old pump was removed, reversing the procedure.

5.3.2.2 Fan Replacement

The EC Fans are located behind the front access panel. The panel must be removed to access the fans. The fans are equipped
with quick connect fittings for the power and control cables to make swap-out easy. Lift the retaining latch on top of the power
and control cable connector housings to unplug the cables. Cut the wire-ties holding the cable bundle in the cabinet.
Remove the four hex-bolts holding the inlet ring then remove the four hex-bolts holding the fan mounting bracket. Remove the
fan assembly together with the inlet ring from the cabinet. Remove the mounting bracket from the old fan and install it on the
new fan. Bolt the new fan assembly (together with the inlet ring) into the cabinet and plug the power and control cables into the
connectors.
Inlet ring
Fan
M6 hex bolts
(two per side)
M5 hex bolts
(two per side)
Power/control
connectors
Figure 5-5. 12" cabinet.
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