8 RLC-SVN005B-EN
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
• 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 v
oltage/
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.
Figure 5. Remove the highlighted components (wye-delta starter) — RTHA-YD
2K1
2K2
2K3
2K4
2T4
2R1-2R6
T1
T2
T3
T4
T5
T6
2TB1
or
2CB1
2F1 2F2
2TB2
2TB3
2K5
2T5
2T6
2T7
2T1
2T2
2T3
2U1
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