Series YB2
24mm Square Panel Seal Pushbuttons
ASSEMBLY INSTRUCTIONS
1. Remove knurled nut.
Spacer
5. Install the blue o-ring which
was removed in step 2 at
the inside bottom of the
bezel.
Bezel
Blue
O-ring
6. Align tab inside of the bezel with keyway on housing and
bring bezel back into its original position.
2. Remove bezel and
o-ring from housing.
Housing
Bezel
Keyway
Tab
Bezel
Blue
O-ring
( –)
make sure that the square
gasket is present at the
3. Install LED.
LEDs
AT634 & AT636
D-Flat
(+)
Part Number
This Side
Cathode
Socket (–)
Anode
Socket (+)
ATTENTION
ELECTROSTATIC
SENSITIVE DEVICES
Align D-flat on LED with Part Number
on switch for appropriate polarity and
insert LED into base.
7. Before installing into panel,
Back of
Bezel Bezel
back of the bezel. Align
keyway on bezel with tab
in panel and push switch
all the way into the panel.
Panel
8. Attach knurled nut behind panel and tighten. Make sure that
bezel and actuator fit properly and that there is no space
between bezel and panel. Do not overtighten.
( –)
LED AT628
D-Flat
(+)
LEDs AT625G,
AT631B,
AT632F
Align D-flat on LED with Part Number
on switch for appropriate polarity and
insert LED into base.
ATTENTION
ELECTROSTATIC
SENSITIVE DEVICES
The larger metal part within the LED
represents the cathode (–). Align LED
for appropriate polarity and insert LED
into base.
Actuator
Spacer
Knurled Nut
LEGENDS
Bezel
Panel
Shaded Area is Printable Area for Film Inserts
( –)
(+)
4. Align tabs (B) on both
sides of actuator with
the projections (A) inside
of the housing and push
actuator firmly down to
snap in.
Cathode ( –)
B
Anode (+)
Actuator
A
Housing
Recommended Print Method:
Screen Print; Epoxy based ink is recommended
Film Material and Thickness:
Clear Polyester, 4 mil max.
(15.88) Sq (0.76) Typ
.625 .030
Availability March 16, 2011
www.nkkswitches.com
(17.4) Sq
.685
Phone 480.991.0942 ? Toll Free 877.228.9655
7850 East Gelding Drive ? Scottsdale, Arizona 85260
0211
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