Manual

Troubleshooting 41
6 Troubleshooting
To quickly identify problems, look for obvious signs such as burnt, missing, damaged, or loose parts, as well
as fluid obstructions and leakages. If a problem recurs, there may be other root causes. Table 6-1 facilitates
troubleshooting based on symptoms. Refer to the Additional Information section for part identification.
Table 6-1 Troubleshooting
Symptom Possible Cause Recovery
DispenseJet is not
cycle jetting.
No signal to the solenoid
valve.
Check the solenoid connector between the
DispenseJet and the Dispensing System.
Air pressure to the solenoid
valve is Off or insufficient.
Check the configuration to verify DispenseJet is
selected as Valve 1.
Verify that the air pressure is 483 to 621 kPa (70 to
90 psi).
Fluid leaks from
weep hole.
Worn seal or needle.
Inspect the needle and seal for excessive wear.
Replace parts if necessary.
Lower seal missing. Install a seal and secure it with the retaining ring.
Fluid dots or lines do
not form correctly.
The nozzle is clogged.
Clean the nozzle with a compatible solvent and
bottlebrush.
If the nozzle cannot be cleaned, replace it.
No fluid being
dispensed.
No fluid in syringe, air bubble
in the flow path, or micro-
adjustment set too low or is
closed.
Use one of the following steps to purge the
DispenseJet:
1. Manually actuate the solenoid valve.
2. Open the micro-adjustment.
3. Send a signal to the solenoid valve to allow
material flow through the DispenseJet.
NOTE: You may have to remove the nozzle before
purging the DispenseJet. Check the syringe
connections and pressure.
The nozzle fluid path is
clogged.
DispenseJet is not jetting.
Refer to above symptom “DispenseJet is not cycle
jetting”
DispenseJet component
malfunctioning.
Disassemble the DispenseJet and inspect the
internal parts. Replace parts if necessary.