* If tubing is brittle, replace with new .050 X .070 tubing (p/n
CPJ00_024_0).
* If tubing is not hard, remove the valve (clamp off all pressure lines first)
and cut off 1/8 inch from ends and reposition on valve.
* Note: Both valve port and tubing end must be dry to ensure a tight fit. Dry
tubing end by rolling the corner end of a paper towel into a fine point and
insert into tubing end.
T) Unit locks up after installation
* Connect transformer to a Power Backup Supply UPS (available from
Loveshaw).
* Supply a dedicated line plus use regulated supply.
* Insure A.C. outlet has a proper ground.
* Make sure the conveyor line is properly grounded to a low impedance
ground (less then 5 ohms).
* If you are unable to unlock the MICROJET by turning it on and off, do
the 666 SLAM function (see operators manual for additional information on
666 SLAM procedure).
U) Tailing output
* Check distance between head and substrate; should be 1/2 inch max.
* Check dot size setting, readjust global and individual.
* Make sure unit is level and not being subject to excessive vibration.
* Purge system of air with lid at approximately 45 degrees.
* Check pump pressure (see AIR PUMP PRESSURE ADJUSTMENT
procedure).
* Check tubing lengths going from valve to nozzle plate (see nozzle plate
drawing).
* Backflush nozzles as needed.
* Change nozzle plate.
* Increase character width and check line speed.
MICROJET Trouble-Shooting Guide 8
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