Trouble
Possible cause and correction
No power.
Be sure that there is power at the wall receptacle. Check the input
power fuse. If the fuse has failed, check the voltage value in the fuse
cartridge window. Be sure that it matches the input voltage.
Auxiliary output is not
Insure that the external voltage to the circuit is between 5 and 24 VDC
functioning.
and that the load does not exceed 250mA.
If the output has been overloaded, the fuse may be open. See sche-
matic on page 23 and replace if necessary.
Inconsistent dots.
1. Check dispensing tip, barrel and material for possible clogging.
2. Check dispenser air pressure reading to be sure air pressure is
not varying.
3. Air bubbles in the material can cause inconsistency. For best
results, remove all air bubbles.
Timer seems inoperative.
Check to be sure
STEADY
mode is off.
Note:
The EFD timer is very reliable. Any failure will be total, so that
no inconsistency is possible. Most questions regarding the timer are
resolved by simply turning the
STEADY
mode off.
Material suck-back.
1. Use SmoothFlow
™
pistons or LV Barriers
™
to prevent this (see
pages 14 and 15).
2. If it occurs, attach an empty barrel, put in
STEADY
mode, place
the barrel in a cup then press the pedal to expel the fluid.
3. If problem cannot be corrected, contact an EFD Product Specialist
for assistance. Dispensers can be returned to EFD for repair.
If you encounter a problem that you cannot readily solve, call EFD.
Troubleshooting