Printronix SLPA8000 User Manual page 240

Chapter 6
Troubleshooting Other Symptoms
Sympton
Cylinder will not cycle
after the label is encoded/
printed.
Label running into tamp
pad.
240
Table 13. Applicator Troubleshooting Chart
Diagnosis
1. Check for faults on the
display.
2. Check the photocell
operation or apply signal.
3. Check input air pressure
and cylinder pressure.
4. Check that the air hose to
the cylinder is not
obstructed.
5. Check cylinder valve
operation.
6. Check for mechanical
binding of the air cylinder or
leaking seal on the cylinder
shaft.
1. Check tamp alignment to
peel bar.
2. Check the air jet pressure
and air jet angle.
3. Check tamp pad for wear
on the edges.
Solution
1. Correct or clear any faults
on the LCD.
2. Replace photocell if
defective. Test photocell or
apply signal input from the
interface board to the GPIO
port.
3. Input air pressure should be
set to 80 psi. The cylinder
pressure should be
approximately 40 to 60 psi
on the control panel.
4. Repair chinked air lines or
broken and leaking fittings.
5. Check air input and output
from the valve. Also check
24 volts to the valve. If not
24 volts, check the 24vdc
power supply output. If OK,
check for mechanical
sticking of the valve. Push
manual valve pilot located
on top of the valve.
6. Remove air lines to the
cylinder and manually slide
up and down to check for
binding. Adjust cylinder or
replace cylinder assembly.
1. Loosen four allen screws
and slide the tamp pad
assembly to .050 inches in
front of the peel bar.
2. Lower pressure on the
control panel, or increase
angle adjustment of the air
jet.
3. Replace the lower pad
assembly if worn.