Elo TouchSystems IntelliTouch Ultra Product Manual Download Page 47

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Chapter 4 - Component Installation

Before mounting the touchscreen, clean the face of the display and the back of the

Before mounting the touchscreen, clean the face of the display and the back of the
touchscreen with household glass cleaner. Be sure to remove all fingerprints. The

touchscreen with household glass cleaner. Be sure to remove all fingerprints. The
space between the touchscreen and the display face must be clean and free of any

space between the touchscreen and the display face must be clean and free of any
foreign objects.

foreign objects.

Mount the touchscreen as follows:

••

Use two layers of the double-sided adhesive tape to achieve a total thickness

Use two layers of the double-sided adhesive tape to achieve a total thickness
of 1/16-inch (2 mm). While specific touchscreen and CRT combinations may

of 1/16-inch (2 mm). While specific touchscreen and CRT combinations may
allow the use of thinner materials, 1/16-inch (2 mm) is generally necessary to

allow the use of thinner materials, 1/16-inch (2 mm) is generally necessary to
allow for variations in ROC

allow for variations in ROC between the two glass

between the two glass surfaces. Review the fit

surfaces. Review the fit

between the touchscreen and the CRT before applying the tape. If one pair of

between the touchscreen and the CRT before applying the tape. If one pair of
opposite edges has a closer fit than the other, put the adhesive tape on the

opposite edges has a closer fit than the other, put the adhesive tape on the
edges of the touchscreen with the better fit. See Figure 4-2 for typical place-

edges of the touchscreen with the better fit. See Figure 4-2 for typical place-
ment. If there is a good fit on all four edges, you may want to use double-sided

ment. If there is a good fit on all four edges, you may want to use double-sided
adhesive tape on all four edges. When doing this, move the adhesive tape in

adhesive tape on all four edges. When doing this, move the adhesive tape in
slightly on one pair of edges and add foam sealing tape outside these two

slightly on one pair of edges and add foam sealing tape outside these two
edges. The thicker foam tape will keep the adhesive tape away from the CRT

edges. The thicker foam tape will keep the adhesive tape away from the CRT
until you are ready to adhere the touchscreen to the display.

until you are ready to adhere the touchscreen to the display.

In general, the adhesive tape should be set back slightly from the edge of the

In general, the adhesive tape should be set back slightly from the edge of the
active area of the touchscreen. The adhesive tape should be attached to the

active area of the touchscreen. The adhesive tape should be attached to the
glass and not to the black tape around the perimeter of the touchscreen. When

glass and not to the black tape around the perimeter of the touchscreen. When
the display is reassembled, the mounting tape should not be visible. Do not

the display is reassembled, the mounting tape should not be visible. Do not
remove the liner from the exposed side of the adhesive tape yet.

remove the liner from the exposed side of the adhesive tape yet.

••

Cut and place the foam sealing tape on the back of the touchscreen to form a

Cut and place the foam sealing tape on the back of the touchscreen to form a
dust seal as shown in Figure 4-2, page 35. This seal is particularly important

dust seal as shown in Figure 4-2, page 35. This seal is particularly important
because the CRT is a good electrostatic precipitator and will attract dust. The

because the CRT is a good electrostatic precipitator and will attract dust. The
adhesive tape and foam sealing tape should form a complete seal around the

adhesive tape and foam sealing tape should form a complete seal around the
touchscreen. Do not leave any gaps. The sealing tape should not be visible

touchscreen. Do not leave any gaps. The sealing tape should not be visible
when the display is reassembled.

when the display is reassembled.

••

Practice aligning the touchscreen on the CRT without removing the adhesive

Practice aligning the touchscreen on the CRT without removing the adhesive
tape liner. The installation can tolerate some horizontal and vertical shift.

tape liner. The installation can tolerate some horizontal and vertical shift.
However, rotational skew between the touchscreen and display axes cannot be

However, rotational skew between the touchscreen and display axes cannot be
easily compensated for in the calibration, and will also interfere with proper

easily compensated for in the calibration, and will also interfere with proper
mounting of the tube in the bezel.

mounting of the tube in the bezel.

••

When you have a good feel for the placement of the touchscreen, clean the

When you have a good feel for the placement of the touchscreen, clean the
back side of the touchscreen and the face of the CRT again. Avoid all contact

back side of the touchscreen and the face of the CRT again. Avoid all contact
between the cleaning solution and the mounting materials as the cleaner may

between the cleaning solution and the mounting materials as the cleaner may
cause the mounting materials to eventually release from the glass. Remove all

cause the mounting materials to eventually release from the glass. Remove all
lint with a brush or compressed air. Remove the liner from the adhesive tape

lint with a brush or compressed air. Remove the liner from the adhesive tape
and align the touchscreen on the display. The thicker foam tape will keep the

and align the touchscreen on the display. The thicker foam tape will keep the

adhesive tape away from the CRT until you are ready to adhere the

touchscreen to the display. Now press the touchscreen firmly against the CRT.