4. Reattach compressor section. Insert all compressor thread-cutting bolts before tightening
them all down.
5. Reinstall the pull bar to support the accent panel, if applicable.
6. Reattach the low-voltage plugs in the compressor section.
7. Reconnect the wiring for the compressor, reheat, humidifier, condensate pump and smoke
detector if applicable.
8. Reattach the sensing tube.
9. Piping must be reassembled in accordance with local codes.
10. Move insulation and plastic bushings away from the brazing area.
11. Wrap piping with wet cloths. Use copper fittings where required.
12. Refer to Piping and Refrigerant Requirements on page31, for piping guidelines and to the
ASHRAE Refrigeration Handbook for general, good-practice refrigeration piping.
13. Open the service valves on the compressor.
14. Reinsert the plastic bushings.
15. Pull vacuum, check for leaks, and charge the DSE with refrigerant. See the unit's nameplate for
the proper charge.
16. Reinstall the galvanized panels on the left side of the coil.
17. Replace the filters.
18. Replace the panels.
Reassembly Checklist forUpflow DA080 and DA085
1. Thread-cutting bolts reconnected and torqued to 225 in-lb. (25Nm)
2. High-voltage wires connected to proper contactors:
a. Compressor
b. Reheat, if applicable
c. Humidifier, if applicable
d. Condensate pump, if applicable
3. Low-voltage wires connected
a. Terminal strip
b. Plug connections
c. Smoke detector, if applicable
4. Coil access plates on left replaced
5. Motor access plate on right side replaced
6. Suction and liquid refrigerant lines brazed
7. Vacuum pulled and unit checked for leaks
8. Unit recharged
9. Filters replaced
10. Panels replaced
Vertiv | Liebert® DSE™ Installer/User Guide
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