Trane RTHD

20 RLC-SVN005B-EN
RTHC Units with EasySTART (or Wye-Delta) 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.
For units with an Easy Star
t Cutler Hammer SSS, remove
the following components,
location
shown in Figure 18:
• 1U11, EasySTART SSS
• 1K300 (replace)
• 1K400 (replace)
• 1TB1 terminal block
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 18. Remove highlighted components (EasySTART) — RTHC
%ASY3TART
3OLID3TATE3TARTER
4ERMINAL"LOCK