Troubleshooting - EFD 900 Operating Manual

POWER, BUT NO LIGHT
POWER, LIGHT, BUT
MACHINE DOES NOT OPERATE
INCONSISTENT DOTS
MATERIAL SUCK-BACK
TIMER SEEMS INOPERATIVE

Troubleshooting

1. Check voltage at wall outlet.
NO POWER
2. Check fuse. Order replacement fuse #7111E.
3. Unplug from wall, remove top cover, visually inspect for any loose
or shorted connections.
Switch module must be replaced.
1. Unplug power input cord.
2. Check foot pedal connection, foot pedal and internal switch.
1. Check dispensing tip, barrel and material for possible clogging.
2. Check air gauge to be sure air pressure is not varying.
3. Check to see if there are air bubbles in the material being
dispensed.
1. Use SmoothFlow
pages 12-13.)
2. If it occurs, attach an empty barrel, (put timer bypass switch on),
put barrel in a cup and press the pedal to expel the sucked-back
fluid.
3. If problem cannot be corrected, contact an EFD Product Specialist
for assistance. Dispensers can be returned to EFD for repair.
1. Check to be sure timer bypass switch is off (yellow light out).
2. Check DIP switch positions (see page 9).
Note: The EFD timer is very reliable. Most questions about the timer
are resolved by simply turning the timer bypass switch off (yellow
light out).
™ pistons or LV Barriers ™ to prevent this. (See
17