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motor terminals, the M14x2 brass jam nuts should be
tightened to a maximum torque of 24 to 30 ft·lb (32.5 to
40.7 N·m). Always use a second wrench to backup the
assembly and prevent applying excessive torque to the
terminal shaft.
Note: 6.0 and 6.6kV motors on 6800 or 6800L frames (see
compressor model number for motor frame) use the
same motor terminals as the 10 to 13.8kV motors.
The motor terminal on a 10 to 13.8kV motor has a copper
shaft that is threaded M14 x 2-6 G. Brass nuts are provided
on the motor terminals to retain the lugs, and the final
connection should be tightened to 24 to 30 ft·lb (32.5 to
40.7 N·m).
NOTICE
Motor Terminal Damage!
Applying torque to the motor terminal when
tightening lugs could result in equipment or property-
only damage.
Always use a second wrench to back-up the assembly
and prevent the application of torque to the terminal
shaft.
Before beginning wiring and torquing, ensure proper motor
terminal care and do NOT apply any excess stress.
Ground Wire Terminal Lug
A ground wire lug is provided in the motor terminal box to
allow the field connection of an earth ground. The lug will
accept a field-supplied ground wire of #8 to #2 AWG. For
AWG/MCM equivalents in mm
2
, refer to the table in
“Electrical Requirements,” p. 53. After completing the field
connection of wiring, inspect and clean the motor terminals
and motor housing, and remove any debris before
reinstalling the motor terminal box cover. The cover must
be re-installed onto the motor terminal box and all bolts
installed. Do NOT operate the chiller with the motor
terminal box cover removed or with any loose or missing
cover bolts.
CE for Medium Voltage Starter
WARNING
Hazardous Voltage w/Capacitors!
Failure to disconnect power and discharge capacitors
before servicing could result in death or serious
injury.
Disconnect all electric power, including remote
disconnects and discharge all motor start/run
capacitors 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 a CAT III or IV
voltmeter rated per NFPA 70E that all capacitors have
discharged.
Note: Graphic labels (shown above) are used for CE
application only.
Important:
• Before servicing, disconnect all power
sources and allow at least 10 minutes for
capacitors to discharge.
• All electrical enclosures—unit or remote—
are IP2X.
• Customers are responsible for all field
wiring in compliance with local, national,
and/or international codes.
• Any fuses inside the medium-voltage
starter enclosure may be energized.
• Power factor correction capacitors (PFCC)
fuses must be installed before energizing
the medium-voltage starter.
• Do NOT modify or disassemble the
medium-voltage starter.
• Use only factory-authorized replacement
parts.
• Do NOT install or energize the medium-
voltage starter if it has been damaged.
• Contactor must be bolted in place after
installation; maximum torque is 14 ft·lb
(19.0 N·m).
Note: Graphic labels (shown above) are used for CE
application only.
Important: Mounting a motor starter on or over a
combustible surface could result in a fire. To
minimize the risk of possible fires, a floor plate
of at least 0.056 in. (1.43 mm) thick galvanized
or 0.63 in. (1.6 mm) thick uncoated steel
extending at least 5.9 in. (150 mm) beyond the
equipment on all four sides must be used.
Medium Voltage Motor
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