35
031-295-B0-001, Rev. B (11/2018)
2.0 Installation, continued
2.9 Cooling Fan Kit Installation
Tools Required:
• Phillips Screwdriver
• Drill and bit for #6 screws
Installation Procedure: To install the optional NPS Fan Kit
(Alpha p/n 745-101-20)
:
Fig. 2-19, Cooling fan installation configuration
2.10 Cooling Fan Kit Removal
To remove the fan kit, follow the procedure below:
1. Open enclosure door and remove the enclosure lid.
2. Verify power is removed from fan circuit.
3. From inside the enclosure, remove the two #2 Phillips-head screws.
4. Remove the fan housing.
5. Disconnect the two Faston® connectors from the fan.
6. Replace lid and close door.
i
SMART
ALPHAGUARD
ACTIVE
STRG A
STRG B
STRG C
STRG D
ALARMS
ALPHA APPS
N
N
OUTPUT 1
OUTPUT 2
This procedure requires a service power supply such as the APP 9015S
or APP 9022S
(Alpha p/n 016-537-B0-002)
to maintain power to the cable plant while fan is being installed.
NOTICE:
1
2
2
5
5
1
2
3
4
5
Open enclosure door and remove the enclosure lid.
Drill out holes on both sides of mesh.
Insert the fan through the top enclosure.
Attach the fan assembly to the two holes using the two #6-32 x 3/8" Phillips screws provided. Orient the fan assembly so that the exposed fan is
up and the fan guard is down, as shown. Screw the screws in from the outside of the enclosure.
Plug one end of the fan’s Y cable into the SPI wire. Plug other end of the Y cable into the power supply’s OUTPUT 2 connector.
4
3
and
