Trane AFDH, Installation Manual

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AFDH-SVN01A-EN 38
Installation
Removal of electrical connections to the existing starter
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WARNING
Hazardous Voltage with Capacitors!
Disconnect all electric power, including remote disconnects before servicing. Follow proper
lockout/tagout procedures to ensure the power cannot be inadvertently energized. For variable
frequency drives or other energy storing components provided by Trane or others, refer to the
appropriate manufacturer’s literature for allowable waiting periods for discharge of capacitors.
Verify with an appropriate voltmeter that all capacitors have discharged. Failure to disconnect
power and discharge capacitors before servicing could result in death or serious injury.
Note: For additional information regarding the safe discharge of capacitors, see PROD-SVB06A-EN
or PROD-SVB06A-FR
1. Turn off the main power disconnect to the chiller and then follow the correct lockout/tagout
safety procedures to ensure that main power to the machine cannot be inadvertently restored.
a. For additional safety, also open all starter and control panel disconnect switches and secure
them in the open position.
b. Depending upon the starter type, proceed to verify that no electrical power exists at either
the starter breaker, or starter disconnect switch, or starter terminal block, and other starter
components before starting the process of wiring removal.
2. Note the orientation of the power cable connections to the starter breaker, or starter disconnect
switch, or starter terminal block.
a. Identify and clearly label the L1, L2, L3, and Ground wiring cables before they are
disconnected.
3. Identify and clearly label the power wiring cables at the compressor motor terminal lugs T1, T2,
T3, T4, T5, and T6 and then disconnect them.
a. Also disconnect the cables from their connection points on the starter and remove them
from the cabinet area to prevent them from getting in the way during the rest of the starter
removal process.
b. Keep the motor terminal lugs. They will be reused later in the installation.
4. At the starter cabinet, identify and clearly label the control and communication wiring running
to the starter panel.
a. Also identify and record the termination point of each wire at the terminal block and then
disconnect them.
b. Remove and save the conduit fittings from the line, load, and control power entrances and
exits on the starter cabinet.
c. Remove and save the conduit top plate for possible reuse later in the installation.