Installation
AFDH-SVN004C-EN 35
3. While steadying the starter panel to prevent it from
tipping forward, carefully begin removing the
retaining bolts that connect it to the lower motor panel
transition cover (Z-Bracket). See Figure 42 for the
Transition Mount and LiquiFlo only. For Direct Mount
remove
motor flange bolts.
Note: The
existing Z-bracket and transition cover on
Transition and LF 1/1.5 installations will be
reused and do not need to be removed unless
greater access is required to the motor
terminals during drive installation.
4. Remove the bolts securing the bottom of the starter to
the
brackets on the evaporator.
5. Carefully remove the starter panel from the chiller and
set
it down in a safe location.
Important:
• Do
not cut off the starter panel brackets that are welded
to the evaporator shell as they will be reused!
• Do
not discard any of the nuts, bolts, washers, or the
angle-iron clips that were used to attach the starter
panel tabs to the evaporator bracket as they will all be
reused!
Mechanical Removal of Existing
Unit-Mounted LiquiFlo 1.0/1.5
Adaptive Frequency Drive
1. Isolate the LiquiFlo drive water-side with isolation
valves.
2. Cut and cap the LiquiFlo drive water-side connections.
3. Depending upon model type, a LiquiFlo drive can
weigh
up to 970 pounds. Verify that the intended lifting
device and rigging has the capacity to safely handle the
load before hooking up to the designated lifting points
on the LiquiFlo drive.
Note: On
some existing LiquiFlo drives, lifting tabs are
spot-welded to the enclosure. These weld scan
break if not lifted straight up. To ensure a safe lift,
Trane recommends drilling a hole and bolting the
tabs to the enclosure to ensure a safe lift.
4. Using safe lifting practices, slowly begin taking up the
slack
in the rigging.Tension the rigging only to the
point that is necessary to take up enough of the weight
of the starter panel to enable loosening the bolts
connecting the panel to the Z-bracket on the motor
flange.
5. While steadying the starter panel to prevent it from
tipping
forward, carefully begin removing the
retaining bolts that connect it to the Z-bracket.
Note: The
existing Z-bracket and transition cover will be
reused and do not need to be removed unless
greater access is required to the motor terminals
during drive installation.
6. Remove the bolts securing the bottom of the LiquiFlo
drive
to the brackets on the evaporator.
7. Carefully remove the starter panel from the chiller and
set
it down in a safe location.
Important:
• Do
not cut off the starter panel brackets that are
welded to the evaporator shell as they will be
reused!
• Do
not discard any of the nuts, bolts, washers, or the
angle-iron clips that were used to attach the starter
panel tabs to the evaporator bracket as they will all
be reused!
8. Remove the bottom panel bracket from the starter
panel
brackets as shown in below figure.
WARNING
Heavy Objects!
Only attach cables (chains or slings) to the designated
lifting points. Each of the cables (chains or slings) used
to lift the unit must be capable of supporting the entire
weight of the unit. Lifting cables (chains or slings) may
not be of the same length. Adjust as necessary for even
unit lift. Other lifting arrangements may cause
equipment or property-only damage. Failure to properly
lift unit could result in death or serious injury.
WARNING
Improper Unit Lift!
Most unit-mounted starter designs tend to be top
heavy. Test lift unit to an approximate height of no
greater than 24 inches to verify proper center of gravity
lift point. To avoid dropping the unit, reposition lifting
point if unit is not level. Failure to properly lift unit
could result in death or serious injury or possible
equipment or property only damage.
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