Troubleshooting - TECHCON SYSTEMS TS250 User Manual

6.3 Cycle Counter
The cycle counter records the numbers of dispense cycle being activated. Up
to 65,535 cycles can be recorded. This number is shown at the lower right
hand corner of the LCD. Press the Counter Reset button (3) to clear the
counter.
7

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
6
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