Rockwell Automation Liqui-Flo Trane Addendum - Manual (Page 34)

5-4 Trane Liqui-Flo Addendum
b. Connect one end of a drain hose to the accumulator on the closed loop
coolant system. Connect the other end of the hose to a drain.
c. Connect a shop air line to the closed loop coolant system at the quick
disconnect fitting. Pressurize the line to 60-90 psi for 1 to 2 minutes to
flush all of the coolant out of the drive.
d. Remove the basket from the Y-strainer and check for any contaminants.
e. From inside the cabinet, disconnect the coolant lines from the panel using
a 1-1/16” wrench on the swivel nut connected to the bulkhead fitting. A
crow’s-foot wrench is recommended. Verify that no residual coolant
remains in the drive.
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 bolts and washers 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. Disconnect the AC input wiring at the drive’s AC input terminals (L1 through
L6) and at the circuit breaker’s line and load terminals.
a. Loosen all of the pressure lugs.
b. Bend the individual wires vertically within the cabinet.
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. Remove the removable plate. See figure 2.3.
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. Save the panel and hardware for reassembly.
Step 11. Place the lifting support bar in the cabinet’s stainless steel C-channel
brackets. The support bar’s pipe supports should face you.
a. Screw two 3/4” screws through the pipe support into the 3/4” nuts which
are welded to the drive’s baseplate.
b. Hand tighten the screws.
Step 12. Remove the four 1/2” nuts and washers that secure the drive’s baseplate to
the cabinet. Save the hardware for reassembly.
Step 13. Tighten the two 3/4” screws to remove the load on the baseplate. Slide the
support bar along the C-channel brackets until it reaches the cabinet’s front
seal lip.