Vertiv Liebert DSE - Page 86

Removing Compressor Assembly forDownflowDA050,DA080andDA085
1. Secure the compressor wire harness to the compressor assembly.
2. Remove the 10 thread-cutting bolts holding the compressor section assembly to the filter and
electric-box assembly and the blower and coil assembly.
There are five bolts in the front, four in the back and one on the top at the middle of the unit.
a. Begin removing bolts at the bottom of the unit and progress toward the top. Use this
method for the front and back bolts.
b. Stabilize the compressor section before removing the top, middle bolt.
NOTICE
Risk of improper handling. Can cause compressor and/or piping damage.
The compressor section is top-heavy and has a small base. It must remain upright. Do not lay
the compressor section on its side during or after removing it from the DSE. Do not remove
shipping blocks from semi-hermetic compressors until the DSE is fully reassembled and ready
for installation.
NOTE: We recommend using piano jacks when moving this section.
Removing Filter and Electric-box forDownflowDA050,DA080andDA085
1. Using a stepladder to reach the top of the DSE, remove the filter support plate; it is attached to
the filter and electric-box assembly with two screws, one on each end.
c. Remove tags from the Schrader fittings on top of the coil headers. Retain the tags for
replacement during reassembly.
d. Remove 16 screws, (8) on each side, from the evaporator top cover plate to coil assembly.
Coil top blocker will remain with top section for rigidity.
e. Remove coil access plates from the left side of the DSE.
f. Remove the four thread-cutting bolts securing the filter and electric-box assembly to the
blower and coil assembly. There are two on the left and two on the right.
g. Separate the unit sections with caution.
Notice
Risk of improper handling. Can cause equipment damage.
• The filter and electric-box section should be moved forward and set on the floor.
• Make sure to lift the coil plate over the Schrader fittings on the headers. We recommend
using four people to remove this section. Special care is required when moving this
section because the legs are not designed to withstand strong shocks.
• The blower and coil assembly must remain upright. The coil is not secured to the blower
and coil assembly.
• Secure the coil to the bottom section with straps or a similar method before moving the
section.
2. Move each section of the DSE to the installation location.
B.3 Reassembling Downflow DA050, DA080 and DA085
1. Replace the top section.
Make sure to clear the Schrader valves on the coil header.
2. Reconnect the filter and electric-box assembly to the blower and coil assembly using thread-
cutting bolts.
Torque the bolts to 225 in-lb. (25 Nm)
3. Reattach the evaporator top cover plate; there are eight screws on each side.
4. Reattach the filter support plate to the filter and electric-box assembly; there is one screw on
each side.
5. Reattach the tags to the Schrader fittings on top of the coil headers.
Vertiv | Liebert® DSE™ Installer/User Guide
86