Rockwell Automation Liqui-Flo Trane Addendum - Manual (Page 32)

5-2 Trane Liqui-Flo Addendum
Step 6. Disconnect the Flexibar conductors at the drive’s U, V, and W output
terminals.
a. Remove the two 3/8”-16-UNC-2B nuts from the clamp holding the
Flexibar to the AC output busbar at output terminals U, V, and W.
b. Remove the load plate and the clamps.
c. Save this hardware for reassembly.
Step 7. Remove the rigid buswork that connects the load side of the circuit breaker to
the drive.
a. Remove the 1/12”-13 bolts and washers from each of the drive’s AC input
terminals (L1 through L6).
b. Remove the two 3/8”-16 bolts, washers, and nuts from each of the six
circuit breaker input busbar connections.
c. Save this hardware for reassembly.
Step 8. Disconnect the 12-position terminal connection located on the lower left side
of the drive. Cut the wire tie on the wire mounting base leading to the panel.
Step 9. Disconnect the leads from each of the three current transformers (CTs).
Wrap the CT leads around the AC output busbar to keep them from being
damaged. Cut the wire ties on the wire mounting bases.
Step 10. Disconnect the AC busbar support from the AC input busbar.
a. Remove the six M5 pan head screws that connect the AC input busbar
(L1 through L6) to the busbar support.
b. Save this hardware for reassembly.
Step 11. Remove the removable plate and wire entry panels. See figure 2.2.
a. Remove the four 1/4” screws and washers from the upper-right corner of
the cabinet that hold the removable plate in place. Remove the removable
plate which will expose a 2” gap in the lip of the cabinet.
b. Remove the eight 1/4” screws that hold the wire entry panel to the top of
the cabinet.
c. Save the panels and hardware for reassembly.
Step 12. Install two eyebolts into the drive to serve as lifting points.
a. Two 3/4” nuts are welded to the drive’s baseplate. Screw the eyebolts
(recommended: 2” eye I.D., 6” long shank) into the nuts.
b. Connect 18” (nominal) of chain between the eyes, securing them with a
clevis clamp.
Step 13. Using an overhead or portable hoist (minimum 1/2 ton rated capacity), bring
a free-fall chain into the cabinet through the access panel and the wire entry
panel.
Step 14. Attach the free-fall chain to the chain secured to the eye bolts. Take up any
vertical slack in the chain.
Step 15. Remove the four 1/2” nuts and washers that secure the baseplate of the drive
to the cabinet. Save this hardware for reassembly.