Trane RTHD

32 RLC-SVN005B-EN
RTHD Units with IT Starter
Removal of Existing Starter
WARNING
Hazardous Voltage w/Capacitors!
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
an appropriate voltmeter that all capacitors have
discharged. Failure to disconnect power and discharge
capacitors before servicing could result in death or
serious injury.
For additional information regarding
the safe discharge
of capacitors, see PROD-SVB06A-EN.
The fol
lowing components of an Intelligent Technology
(IT)SSS need to be removed prior to installing
the
Benshaw RediStart starter:
• Intelligent Starter (IT)
• 1K11 (replace)
For units with wye-delta starters, remove the associated
co
ntactors and resistor
s. See “RTHA Units with Wye-Delta
Starters,” p. 8 for an example.
Figure 30, p. 32 shows the basic layout of the IT starter
with the components that need to
be removed
highlighted.
Figure 30. Remove the highlighted components (IT starter) — RTHD
CIRCUIT
BREAKER
)4
3OLID
3TATE
3TARTER