Rtha Units With Wye-Delta Starters; Removal Of Existing Starter - Trane RTHA Installation, Operation And Maintenance Manual

RTHA Units with Wye-Delta Starters

Removal of Existing Starter

WARNING
Hazardous Voltage!
Disconnect all electric power, including remote
disconnects before servicing. Follow proper lockout/
tagout procedures to ensure the power can not be
inadvertently energized. Failure to disconnect power
before servicing could result in death or serious injury.
The following components of an Wye -Delta starter need
to be removed prior to installing the RediStart starter:
• 2R1-2R6 Resistors
Figure 5. Remove the highlighted components (wye-delta starter) — RTHA-YD
2T4
2R1-2R6
2U1
8
2K4
2K3
2K2
2K1
• 2K1-2K4 Contactors
• 2U1 monitor
• Optional voltage/current meters
Figure 5, p. 8 shows the basic layout of the Wye-Delta
starter with the components that need to be removed
highlighted.
Note: If the optional voltage/current meters are mounted
on the cabinet door, they must be removed for the
new starter to fit properly. Once the meters are
removed, block-off plates can be obtained locally.
Install per your state and local codes.
2F1 2F2
2TB3
T6
T5
T4
T3
T2
T1
2TB2
2K5
2T5
2T6
2T7
2TB1
or
2CB1
2T2
2T1
2T3
RLC-SVN005B-EN