Setup
313937A
15
It is most efficient to adjust the snuff back while material
is dispensing but it can also be adjusted when there is
no air pressure in the system.
1.
If a static mixer is not in place, install one then prime
the machine. See Prime the Dispense Head,
page 12.
2.
Place a waste container under static mixer.
3.
Press the start device.
4.
Inspect the tip of the static mixer for dripping mate-
rial or for air bubble traveling up the mixer.
5.
Perform another shot and while dispensing adjust
the snuff-back adjustment knob (103) as follows.
•
If an air bubble is moving up the mixer, turn
knob clockwise to decrease snuff back.
•
If material is hanging from tip of mixer, turn knob
counterclockwise to increase snuff back.
6.
Repeat step 5 until snuff back is adjusted as
desired.
Ratio Check
1.
Remove mixer and shroud.
2.
Cycle the machine several times into a waste con-
tainer to clear and prime.
3.
Weight six small empty cups and label as indicated.
4.
Set the Stroke Adjust switch. See the Adjusting the
Shot Size section on page 11.
5.
Turn Pump Mode to SHOT.
6.
Place two cups under nose and cycle machine
once. Repeat twice for remaining cups.
7.
Weigh the six cups.
8.
Subtract the weight of the empty cups from the
weight of the filled cups to get the weight of the dis-
pensed material.
9.
Complete the ratio calculations.
Perform ratio check daily. If machine is used for
more than one shift per day, perform ratio check
once per shift.
Содержание Pneumatic PR70
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