Rockwell Automation 20M LPM15 Liquid-Cooled Adjustable Frequency AC Drive FRN 2.xxx - Manual (Page 28)

1-16 Installation/Wiring
3. Connect a suitable grounding conductor to the motor frame and the
remote control station (if used). Run each conductor unbroken to earth
ground. When adding more than one grounding conductor wire to a
single chassis ground, twist the conductors together. Tighten these
grounding connections to the proper torque as shown in
Table 1.E .
4. Close the door of the enclosure.
Coolant Considerations LPM15 drives use o-ring face seal fittings for connection to the coolant
supply. The coolant is typically clean water with a corrosion inhibitor as
described in this section.
Considerations Affecting all Frame Sizes
LPM15 drive coolant connections are made with o-ring face seal fittings.
The copper tube running from the heatsink to the o-ring fittings is covered
with closed cell foam insulation.
The mating connection is shown in Figure 1.8 . The mating process includes
the following steps:
1. Coat the o-ring with the o-ring lubricant. The goal is a thin film covering
the entire o-ring surface. Avoid excess globs of lubricant.
2. Insert the o-ring into the o-ring groove in the external thread-side fitting
on the user side. Avoid any twisting of the o-ring.
3. Assemble the fittings and tighten to a torque of 37 to 45 N-m (or 27 to 33
lb.-ft.). Use a backup wrench on the user side fitting to avoid twisting the
drive side tubing.
Figure 1.8 Mating Connection
DRIVE SIDE CONNECTION USER SIDE CONNECTION
ORFS Nut
(Parker p/n 10-BL-B)
ORFS Braze Adapter
(Parker p/n 10-LOHB3-B)
ORFS Braze Sleeve
(Parker p/n 10-TL-B)
O-Ring, Neoprene
(Parker p/n 2-016-CO873-70)
O-Ring Lubricant
(Parker p/n 884-2GRAMS-LUBE)
5/8-inch O.D.
Copper Tube
Backup Wrench
(Use to prevent twisting
during nut tightening.)
5/8-inch O.D.
Copper Tube