Setup
313937A
11
Setup
Adjusting the Shot Size
The RETRACT proximity switch enables the machine
logic to retract the air cylinder and pumps when tripped.
Follow these instructions to adjust the position of this
switch for your desired shot size.
1.
Loosen the knurled knob securing the RETRACT
proximity switch.
2.
Unlock the Stroke Adjust lock by sliding the lever to
the left.
3.
Turn the Stroke Adjust lock knob until the RETRACT
proximity switch is in the desired position.
4.
Lock the Stroke Adjust lock by sliding the lever to
the right.
5.
Tighten the RETRACT proximity switch.
Adjust the Dispense Valve
Switch
1.
Reduce air pressure to 0 psi.
2.
Loosen the knurled knob that secures the dispense
valve proximity switch.
3.
Move the dispense valve proximity switch pointer all
the way to the right and initiate a machine cycle.
4.
Slowly increase air pressure until the air cylinder
moves forward and stalls. Do not exceed 30 psi.
5.
Return pressure to 0 psi.
6.
Slide the dispense valve proximity switch pointer
back to the left until the switch is tripped and air is
heard.
7.
Continue to slide the dispense valve proximity
switch pointer approximately another 1/16 in. to the
left then secure.
If the RETRACT proximity switch is set to a point
before the openings of the metering tubes, no
material will dispense.
The machine will produce the most accurate ratio i f
the shot size is between 15% and 100% of the
maximum shot size. Smaller shot sizes may pro-
duce less accurate ratios.
Stroke Adjust
Dispense Valve
Stroke Adjust
Dispense Valve
Summary of Contents for Pneumatic PR70
Page 32: ...Dimensions 32 313937A ...