3. All wires are hot-stamped and all circuit board connectors are lettered to ease connection.
Some cable ties must be cut and replaced. Refer to the unit’s wiring schematic on the unit’s
dead-front panel for details.
NOTICE
Risk of improper handling. Can cause compressor and/or piping damage.
Do not lay the compressor section on its side. It must remain upright. The coil section also must
remain upright.
4. Label the three quick-connect plugs from the compressor compartment and disconnect them.
5. Disconnect the CAN connections going to the EEV boxes in front of each compressor.
6. Disconnect the compressor wire harness, including the crankcase heater wires, from the
contactor in the electric box.
7. Pull the conduit and wires into the compressor compartment.
8. Close the electric-box cover and the accent panel.
9. Evacuate and recover all refrigerant from the DSE.
Air-cooled units are shipped with a nitrogen holding charge.
NOTICE
Risk of compressor oil contamination with moisture. Can cause equipment damage.
We recommend front-seating the compressor service valves. Front-seating the valves keeps
the nitrogen or refrigerant charge in the compressor and prevents moisture from
contaminating the compressor oil.
10. Cut the insulation and pull it back from the piping.
11. Cut the refrigerant piping with a tubing cutter; if there is no Schrader fitting, let the nitrogen
bleed out before cutting all the way through the pipe.
NOTE: We do not recommend un-sweating refrigerant connections.
12. Immediately cap and seal all piping that has been cut, including the suction and liquid lines.
Vertiv | Liebert® DSE™ Installer/User Guide
88
To Next Page
Loading...
