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Installation: "Series A"
Infrared Touch Frame & Tempered Glass Shield On LG 42" LCD
Step 1.) Preparation
Workspace
Requirements:
1.) A clean, atmospherically-controlled environment with good lighting
2.) Two work surfaces, one with a padded, non-abrasive surface and
another very flat (we use a 1" thick plate glass measuring 96 X
52") assembly table. For
this installation onto an LG 42" LCD each surface should be at least
48X60"
Tools Required:
1.) #1 or #2 Philips Head
Screwdriver (per your display's fasteners)
2.) X-Acto Knife and Fresh Blades
3.) Windex® Glass Cleaner or Equivalent
4.) Large Roll Paper Towels
5.) Lint-Free Monitor Cleaning Wipes
6.) 8-12 Non-Skid Cork-Faced Glass Support Squares
7.) Latex Surgical-Style Gloves (optional)
8.) Roll of Painter's Tape (optional)
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Pictured: LG
42" LCD display on
non-abrasive work surface
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Pictured: Glass Shield
on Cork-Blocks to be Cleaned
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Glass Shield Preparation
The tempered glass shield (0.125" thick in this instance) is placed upon non-slip cork-faced
blocks. These support and protect the glass of both the glass shield and
the tabletop.
Thoroughly clean the entire glass shield using a
commercially available glass cleaner.
Then use lint-free monitor wipes to remove any extraneous paper or dust
residue.
Tip: It is more effective to liberally
spray the cleaner directly on the glass, allow at least 30 seconds to soak, then wipe off in
vertical strokes. Repeat using horizontal cleaning motion. Continue until
completely spotless on the entire surface, edge to edge.
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Apply Adhesive Tape
This is an engineered double-sided adhesive with extraordinary bonding
strength when applied correctly.
We will concentrate our
efforts on the more difficult substrate to adhere to, thus, we apply the
adhesive tape to each side of the the glass shield rather than directly to the
display or the Wavelength® unit.
Apply the 1" wide 3M® VHB® acrylic adhesive tape on one side of the glass to within 1/16" of the
outer edge.
Tip: It is important to maximize the adhesive
properties of the VHB by carefully laying down a
couple of inches at a time and then applying moderate pressure from the
midline outwards to allow trapped air to escape.
Note: DO NOT STRETCH the adhesive tape |
Pictured: Glass Shied with VHB Applied (tape's
liner backing
paper still in place)
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The adhesive should have no
gaps in the corners. Overlapping the tape at the X/Y intersection and cut through both
layers to create a near perfect butt joint.
Tip: Butt joints are preferred
because they
expose less potential open area than mitre joints.
Note: Adhesive Strength Is Directly Proportional
to Contact Area, It
should be laid down accurately and pressed onto the surface after it is
positioned. |
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Pictured: Wavelength
Touch Frame With Glass Shield Assembly"blocked-in" with Cork.
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Preparing the Wavelength
Touch Frame
Using the flat table
surface, the Wavelength® unit is placed face down with non-skid
cork blocks under and around the outside edges to prevent it from slipping
around while we work.
Thoroughly clean the back of the Wavelength® touch
frame using a
commercially available glass cleaner.
Note: Do not spray cleaner directly on the unit,
instead, spray it onto the paper towel and vigorously wipe down the
surface.
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After the touch frame's
rear surface has been completely cleaned and dried, strip the liner off
of one side of the glass shield.
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Pictured: Stripping
Liner Off Adhesive
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Position the Glass
The tape's liner has been
stripped and the assembly is ready For Installation On The
Display
Carefully place the glass on the rear side of the Wavelength
touch frame.
Note: The glass
is sized smaller than the touch frame which creates a "reveal"
of approximately 1/16"~1/8" on all four edges.
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Repeat the
process to apply adhesive to the other side of the glass.
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Assembly Attachment
Attach the touch frame (with glass) as an assembly to the display
itself.
Tip: Mark the
corners of the touch frame's final, ideal location before setting the touch
frame assembly in place by "dry fitting" the assembly on the
display while the adhesive's liner is still in place. Mark the corners using
strips of "Painter's Tape".
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Optional Support Brackets
The optional support brackets install using the display's existing bezel
attchment fasteners. These are located on the back of the display. Remove
and re-use the bottom screws closest to the vertical portion of the
frame.
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The brackets are functional supports as well as a method to hide and route
the touch frame's USB communication cable. Route
the cable through the bracket as shown
before using the display's fastener to attach it. |
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Brackets
Installed
There are "left" and "right" brackets. Installed
properly, the outer top corner of the brackets face will be located at the
point of the frame's corner radius ends. |
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Curing
The touch frame adhesive requires 72 hours at 72ºF. ambient temperature
to reach 75% of its full strength (100 p.s.i.)
The display assembly should be left in a horizontal plane during the initial
curing stage to assure a secure position.
Tip: After the first 24 hours turn the assembly
touch face down for the final 48 hour cure.
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