M&R CHALLENGER II Series, Manual, Page: 48 / 241

Operator Controls
M&R Printing Equipment, Inc. - Glen Ellyn, Illinois
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The M&R AC print stations feature solid state proximity sen-
sors to facilitate the setting of print stroke length from the
front and the rear of the screen. To adjust the print stroke
length, simply grasp the sensor mounting bracket, and gen-
tly slide the proximity sensor to the desired position. Adjust
the sensor so that the flood bar and squeegee just clear the
image area of the screen. (See illustration below)
NOTE: DO NOT ADJUST THE SEN-
SOR WHILE THE PRINT STATION IS
IN OPERATION!
The squeegee and flood bar speeds may be independently
adjusted to suit a wide range of print applications or require-
ments. The speed adjustment knobs are located on the top
print station control panel. Simply adjust the control knob
for either the flood bar speed, or the squeegee speed,
clockwise to increase the speed, or counterclockwise to
decrease the speed. A convenient L.E.D. digital speed indi-
cator is located on the power inverter assembly at the right
rear of the print station chassis. Use this indicator as a
handy visual reference whenever the need for reproducing
precise flood/print stroke speeds is required. (See illustra-
tion below)
The AC drive print stations include an adjustment for setting
of the off-contact distance. Off-contact is defined as the
dimension between the bottom of the screen fabric and the
top surface of the substrate. Generally when printing tex-
tiles, the off-contact distance is set for 1/16”. The adjust-
ment may be set by use of the threaded shafts with lock
nuts located on the front and rear screen frame holder
assembly. Using a 1-1/8” open end wrench, loosen the
lower locking nut on the threaded shaft. Turning the top
locking nut counterclockwise will decrease the off-contact
distance, while turning the top locking nut clockwise will
increase the off-contact distance. Remember to tighten the
bottom and top locking nuts when you are satisfied with the
off-contact distance. Adjustment of the rear screen holder
off-contact will require the use of a 3/4” open end wrench
(See illustration below)
i
IMPORTANT!