The following figure shows the locations of the coolant inlet and outlet connections on
PowerFlex®
755TR frame 6L drives.
Frame 6L Drives Coolant Connection Locations
A
Coolant inlet
B
Coolant outlet
The rated working pressure of the frame 6L drive is 6.89 bar (100 psi). Size the coolant supply and return lines for 76 LPM (20 gpm) / 6.89 bar (100 psi) service with a maximum operating temperature of 50 °C (122 °F). The required operating flow rate and pressure drop is specified in table ?.
Coolant connections for frame 6L drives are made using 37° flare fittings which have a:
3/4-inch nominal size
‘-12’ SAE dash size
1-1/16-12 UN/UNF-2B external thread size
Depending on the location of the heat exchanger to the drive, the following drive cooling loop hose kits are available.
Drive Cooling Loop Hose Kits
Hose Length
Hoses in Kit
Drive Side Coupling Size
Heat Exchanger Side Coupling Size
Used With
Hose Kit Cat. No.
3 mm (10 ft)
2
0.75 in.
0.75 in.
Frame 6L
20L-GH10-B1
9.1 mm (30 ft)
2
0.75 in.
0.75 in.
Frame 6L
20L-GH30-B1
All drive side hose kit fittings are 37° flare.
Each hose kit contains 2 hoses and appropriate connectors.
IMPORTANT:
Activities including installation, adjustments, putting into service, use, assembly, disassembly, and maintenance are required to be carried out by suitably trained personnel in accordance with applicable code of practice.
