GE AF-300 P11 User Manual page 19

A drive of 40HP or more can be converted to external
cooling simply by moving the upper and lower mounting
brackets as shown in Fig. 2-2-3. Remove the M6 bracket
screws, move the brackets, then secure the brackets
using the M5 case mounting screws. (The bracket screws
are no longer required after changing the bracket mount-
ing position.)
Bracket Screws (M6)
Case mounting
screws (M5)
10 screws total
Fig. 2-2-3
In an external cooling system, a heat sink radiating about
70% of total drive heat (total loss) can be placed outside
the device or control panel, as shown in Fig. 2-2-2.
7. For drives of 30HP or less, remove the ventilating
covers if ambient temperature exceeds +40°C (104°F).
1. Removing the Ventilating Covers
One ventilating cover is mounted on top of the drive and
two or three are mounted at the bottom. Remove the
main cover and then remove ventilating covers by
popping out the cover inserts as shown in Fig. 2-2-4.
Fig. 2-2-4 Removing the ventilating cover
Mounting
Mounting
bracket
Installation of Open Type with NEMA 12 Heatsink Drive
(40 Hp and above)
Fig.2.2.5
1. Remove adhesive protection strip from gasket and
then mount gasket to panel/enclosure, carefully
aligning cutout and mounting holes.
2. Install the drive unit and tighten the mounting bolt
and nut. (Tightening torque: 119 lbs-inch [M8], 425
lbs-inch [M12] ). Mounting hardware to be supplied
by customer. (refer to figure 2.2.5)
3. After proper torque has been applied to all mounting
hardware, seal the outside end of the hardware with
silicon glue. Silicon glue to be supplied by the
customer. (Refer to Fig. 2.2.6)
2-2
Data subject to change without notice 7/07. © 2007 GE Drives
Fig. 2.2.6