How To Remove The Electrical Parts; Earth Leakage Circuit Breaker; Contactor; Terminal Block - Mitsubishi Electric EHSC-VM2B Service Manual

DISASSEMBLY PROCEDURE

3. How to remove the electrical parts

(Steps (1) through (3) are applied to all the following parts.)
(1) Remove the front panel. (Refer to Procedure 1).
(2) Remove the 4 screws holding the control box cover.
(Photo 3-1)
(3) Slightly lift and pull out the control box cover. (Photo 3-1)
<Earth leakage circuit breaker> (Photo 3-2)
(4) Disconnect all the lead wires from the earth leakage cir-
cuit breaker.
(5) Remove the 2 screws on the earth leakage circuit break-
er.
Note: To avoid dropping of the breaker, hold the breaker by
hand when removing the last screws.
<Contactor> (Photo 3-2)
(4) Disconnect all the lead wires from the contactors.
(5) Remove the 2 screws on each contactor.
Note: To avoid dropping of the contactors, hold the contactors
by hand when removing the last screws.
To prevent an electrical shock, wait until all the LED
lamps on the FTC4 control board are turned off.
<Terminal block> (Photo 3-2)
(4) Disconnect all the lead wires from the terminal block. (To
disconnect the S1, S2 and S3 lead wires, disengage the
locks by pressing on the claws.)
(5) Remove the screw on the terminal block.
Note: To avoid dropping of the terminal block, hold the termi-
nal block by hand when removing the screw .
<Controller board> (Photo 3-3)
(4) Disconnect all the lead wires from the controller board.
(5) Remove the controller board from the 6 board supports.
OCH532A
Photo 3-1
Control box
cover
Photo 3-2
Controller
board
Screw
* The photos shown are of the EHSC model.
Photo 3-3
Controller
board
69
PHOTOS
Control box cover fixing screws
Control box cover
fixing screws
Earth leakage circuit
Control box
breaker (ECB1)
Contactors
Terminal block (TB1)