4-8
Cooling Loop Installation
PowerFlex 700L Frames 2, 3A, and 3B Liquid-Cooled AC Drives User Manual
Frame 3A or 3B Complete Drive
For locations of the coolant inlet and outlet connections on PowerFlex 700L
Frame 3A Complete Drives, see
locations on Frame 3B Complete Drives, see
(front and side
views).
The rated working pressure of the Frame 3A and 3B Complete Drive is 6.89
bar (100 psi). Size coolant supply and return lines for 76 LPM (20 gpm) /
6.89 bar (100 psi) service with a maximum operating temperature of 40 °C
(105 °F). The required operating flow rate is specified in
Table 4.C
.
Before connecting the coolant hoses to the Complete Drive hose fittings
located at the lower-right back corner of the drive enclosure, see
Figure 4.8
and perform these steps.
1.
Remove the factory-installed hose fitting plugs and the enclosure wall
dome plugs.
2.
Install the factory-supplied snap bushings to the enclosure wall.
Figure 4.8 Frame 3A and 3B Complete Drive Coolant Connection Components
Frame 3A and Frame 3B Complete Drive coolant connections are made
using 37 degree flare fittings which have a:
•
1-inch nominal size
•
“-16” SAE dash size
•
1-5/16-12 UN/UNF-2B external thread size
The mating connection is shown in
Figure 4.9
. To make the mating coolant
connection, follow these steps.
1.
Assemble the mating version of the fitting (with swivel nut) to each
fluid fitting, and tighten to a wrench resistance of approximately 3.4
N
•
m (30 lb
•
in).
Enclosure Wall
Snap Bushings
Enclosure Wall
Dome Plugs
Hose Fitting Plugs
OUTLET
INLET
Aotewell Ltd
www.aotewell.com
Industry Automation
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