Amada Miyachi Unitek STA-100A, Руководство по эксплуатации, Страница: 74 / 154

CHAPTER 5: MAINTENANCE
STA SERIES AC CONTROLS
5-10 990-351
Section IV. Optional Components Replacement
NOTE: Each of the following options is described in a separate Appendix . Each Appendix contains
descriptions, maintenance procedures, and other information. (See Table of Contents .)
Optional Primary Current Sensor
1 To replace the primary current sensor, disconnect the two-wire (white and gray) connector from
the mating connector of the two-wire (black and red) jumper cable (which is connected to the
AC Timer Main Board connector J1).
2 Disconnect the orange cable from the circuit breaker by loosening the Allen head screw in the
circuit breaker.
3 While holding the current sensor, remove the 10-32 screws and size 10 lock washers that secure
it to the back plate.
4 Slide the current sensor from the orange cable.
5 Install or re-install the primary current sensor by sliding the sensor onto the orange cable from
L1 bus bar.
6 Connect the orange cable to the circuit breaker (if equipped).
7 Attach the current sensor to the Control with 10-32 screws and number 10 washers.
8 Reconnect the two-wire (white and gray) connector from the mating connector of the two-wire
(black and red) cable.
Optional Secondary Current Sensor Connector
1 To replace the secondary current sensor connector, disconnect the two-wire (black and red)
cable connector from the AC Timer Main Board connector J11.
2 Remove the attaching hardware (nut and washer) from the inside bottom of the Control.
3 Install or re-install the connector assembly by attaching it to the bottom of the Control with the
attaching hardware (nut and washer) supplied with the assembly.
4 Reconnect the two-wire (black and red) cable connector to the AC Timer Main Board
connector J11.