
LW Series Instructions
22
ø22
z
Safety Precautions
Instructions
•Turn off the power to the LW series control units before
starting installation, removal, wiring, maintenance, and
inspection of the products. Failure to turn power off may
cause electrical shocks or fire hazard.
•To avoid burning your hand, use the lamp holder tool when
replacing lamps.
•For wiring, use wires of a proper size to meet the voltage
and current requirements. Solder correctly according to the
instructions on “Wiring” and “Notes on Terminal Cover” on
page 23. Tighten the M3 terminal screws to a torque of 0.6
to 1.0 N·m. Failure to tighten terminal screws may cause
overheating and fire.
Panel Mounting
Remove the contact block from the
operator. Insert the operator into the
panel cut-out from the front, then install
the contact block.
•Removing the Contact Block
Turn the locking lever on the contact
block in the direction opposite to the
arrow on the housing. Then the contact
can be removed.
•Installing the Contact Block
Insert the contact block, with the TOP
markings on the contact block and the
operator placed in the same direction.
Then lock the units, turning the locking
lever in the direction of the arrow.
•Notes on Mounting
Use the optional ring wrench (LW9Z-
T1) to mount the operator onto the
panel. Tightening torque should not
exceed 1.2 N·m. Do not use pliers.
Excessive tightening will damage the
locking ring.
•Collective Mounting
As the locking lever can be turned eas-
ily from the rear of the units using a
screwdriver, the contact blocks can be
removed even when mounted collec-
tively.
Replacement of Lens and
Marking Plate
•Removing
1. Remov e the oper ator (lens, marking
plate, and lens holder) b y inserting a
screwdriver into the recess of the
lens through the bezel.
[Removing the Operator]
2. Remove the marking plate by push-
ing the lens from the rear to disen-
gage the latches between the lens
and the lens holder, using the
screwdriver as shown below.
[Removing the lens]
Note:The translucent filter in the lens holder
cannot be removed because the filter
is sealed to make the unit waterproof.
•Installing
For round lens types, place the mark-
ing plate on the lens holder with the
anti-rotation projection engaged and
press the lens onto the lens holder to
engage the latches. For square lens
types, insert the marking plate into the
lens, and press the lens onto the holder
to engage the latches.
Note: Make sure of correct orientation of the
marking plate.
[Round Lens Type]
[Square Lens Type]
Marking Plate and Films
For LW series illuminated pushbuttons
and pilot lights, legends and symbols
can be engraved on the marking
plates, or printed marking film can be
inserted under the lens for labelling
purposes.
•Marking Plate and Marking Film
Size
TOP side
Operator
Locking lever
TOP marking
Contact block Locked position
Lens Round Lens Square Lens
Built-in Marking PlateApplicable Marking Film
Lens Marking Plate Lens Holder
Lens Marking Plate Lens Holder
Engraving
Area
ø17.8
0.85
Engraving
Area
0.85
0.6
17.5
19.8
•Two 0.1mm-thick films or one 0.2mm-
thick film can be installed in the lens.
•Marking film is not included.
•Recommended marking film: Polyester
film
•Engraving must be made on the
engraving area within 0.5mm deep.
•The marking plate is made of white
acrylic resin.