A3C

13

Application

Mounting and Replacing the Pushbutton

(1) Mounting Direction for the Pushbutton/Display and Lamp

Lighted Pushbutton Switch

• Insert the Lamp (incandescent lamp or LED lamp) into the

Pushbutton so that the lamp guide fits into the wider gap between

the projections on the Pushbutton.

Indicator

• With Indicators, the Lamp is inserted facing the opposite direction

(i.e., at 180

°) to that for Lighted Pushbutton Switches.

Note: Push the projections on the Lamp into the grooves on the Pushbutton/

Display.

The Lamp for Lighted Pushbutton Switches moves, but the Lamp for

Indicators is fixed.

(2) Mounting Direction for the Pushbutton/Display and Switch

• Insert the Pushbutton/Display into the Switch so that the lamp guide

is aligned with the non-projecting part of the Switch.

• Apply a pressure between 9.8 and 24.5 N.

Note: 1. The mounting direction for Indicators is 180

° to that for Lighted

Pushbutton Switches. Be sure to insert the Legend Plate and other

parts with the correct orientation.

2. If the terminals of the Lamp become bent, it may be impossible to fit

them into the lamp terminal holes. Ensure that the terminals are

straight when they are inserted.

3. Take particular care about the mounting direction with the round

models (A3CT).

(3) Removing the Pushbutton/Display

Hold the recessed portions on the cap of the Pushbutton and pull.

Note: Do not use tools such as pliers to remove the Pushbutton as this may

damage the cap.

Panel Mounting

• Insert the Switch from the front of the panel. Mount the mounting

nut from the terminal end of the Switch and tighten it.

• There are projections on the terminal end of the Switch which may,

depending on the orientation, block the nut. In this case, turn the nut

until it is possible to mount it. Tighten the nut to a torque between

0.20 and 0.39 N·m.

• If soldering is used, mount the mounting nut first. Lead wires and

mounds of solder may make it impossible to mount the nut after

soldering.

Socket Mounting

• After securing the Switch to the panel using the mounting nut, insert

the Socket into the Switch.

• Align the positioning holes of the Socket with the projections of the

Switch before inserting the Socket.

Mounting the Insulation Cover

• After securing the Switch to the panel using the mounting nut, pass

the lead wires through the holes in the Insulation Cover and then

perform wiring. Hold the Insulation Cover so that the cylindrical hole

is facing the Switch, and insert the lead wires from the end with the

barriers.

• After wiring is completed, mount the Insulation Cover by pushing it

into the Switch.

Projections

LED/lamp guide

LED/lamp guide

Groove of the Display

Projection of the LED/lamp

LED/lamp guide

Projection

of the Switch

Recess

Mounting nut

Panel

Panel

Projection

of the Switch

Positioning

hole of the Socket

Insulation Cover attached to Switch

Switch terminal