6
Troubleshooting
PROBLEM
LCD does not
light
System will not
actuate
System will not
pressurize
System will not
pull vacuum
Inconsistent
dispensing
POSSIBLE CAUSE
No power input
Foot switch not
plugged in or
improperly plugged
in
Defective foot switch
Broken wire or loose
connection inside
unit
Defective solenoid
Defective PC board
Insufficient air
pressure
Air hoses not
plugged in
Regulator defective
Vacuum setting is
too low
Defective solenoid
Defective vacuum
venturi
Defective vacuum
needle valve
Air bubbles in
adhesive
Dispense time is too
low
Dispense needle
started to clog
10
CORRECTION
Check power cord
connections
Turn on power
Check foot switch
connection
Foot switch needs to be
repaired or replaced
Unplug power cord and
disconnect air supply.
Remove cover and check
for broken wires or loose
connections
Replace solenoid
Replace PC board
Increase air supply
pressure
Check connection
Replace regulator
Increase vacuum setting
Replace solenoid valve
Replace venture
Replace needle valve
Reduce vacuum setting
Increase dispensing time
Replace needle