M&R 12 COLOR, Manual

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Operator Controls
M&R Printing Equipment, Inc. - Glen Ellyn, Illinois
39
Before securing the screen frame in the frame holders, be
sure to set the micro registration adjustments for “Zero” or
middle range. (See illustration below)
In addition, be sure to allow 3/8” (9mm) to 1/2” (12mm) gap
between the inside of the front screen frame holder and the
screen frame. This clearance will prove helpful later in the
set-up process as you align screen frames which may have
a slightly mis-aligned image. When the screen frames are
properly loaded into the front and rear screen frame holders,
lock the screen frame into position using the pneumatic
screen frame clamp toggle switches (Air Locks) located on
the small control panel on top of the print station assembly.
Install all remaining screen frames as outlined above.
You are now ready to install the flood bar and the squeegee.
The flood bar is installed on the rear (towards the center of
the press) print carriage mounting bar. The squeegee is
installed on the front (towards the outside diameter of the
press). NOTE: On presses ordered with outside to inside
diameter print stroke, the flood bar and squeegee mount in
an opposite manner, squeegee at the rear (towards the cen-
ter of the indexer) and flood bar in the front (towards the
outside diameter of the press).
Align the notches on the flood bar and squeegee with the
pneumatic squeegee/flood bar clamps, or with the manual
mounting clamps provided. Raise the squeegee/flood bar
into the clamp assembly and up against the chrome plated
mounting bar and slide it either to the right or the left to cen-
ter it on the mounting bar.
Once centered, lock the squeegee/flood bar in place using
the pneumatic clamps or manual clamps as provided.
Both the flood bar and the squeegee are provided with an
angle adjustment. If the angle is set to a greater degree, the
squeegee will deposit more ink during the print stroke.
Decreasing the angle will result is less ink deposit. The
same holds true for the angle of the flood bar as well. Set
the angle for the squeegee and flood bar to middle range
(an approx. 30-40 degree angle). (See illustration below)
Adjust the flood bar pressure by use of the large black
knurled knobs at the top of the print carriage assembly. The
flood bar pressure should be adjusted so that there is only
a slight pressure felt on the bottom of the screen mesh. To
increase the flood bar pressure, turn the black knurled
knobs counterclockwise. To decrease the pressure, turn the
black knurled knobs clockwise. With the flood bar installed,
you are now ready to install the squeegees.
Squeegee installation is performed in the same manner as
described previously for the flood bar, raise, align and lock.
Adjustment of the squeegee pressure is as follows:
A properly adjusted squeegee should exhibit a slight bend,
producing a light resistance as you manually push the print
carriage towards the rear of the screen. You can note the
pressure reading on the small reference scale on the air
cylinder. To increase the squeegee pressure, turn the black
knurled knobs counterclockwise. To decrease the pressure,
turn the black knurled knobs clockwise. (See illustration
below)