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Troubleshooting
6-20
Backflushing a Valve
Perform this procedure only if you were unsuccessful in achieving good
quality print by backflushing or double backflushing a nozzle, or if ink is
seeping from the nozzles. Backflushing forces solvent into a valve’s outlet
port and out its inlet port.
Note: This procedure requires the use of a Backflush Kit. To order see the
"Parts List."
Note: Before backflushing, check the inlet and outlet tubing to make sure
there are no contaminents lodged in the tubing.
1) Unplug the controller and the printhead power supply.
2) Disconnect the ink line, data lines and power supply cables from the
printhead.
3) Remove the ground wire.
4) Remove the printhead enclosure.
5) Remove the printhead assembly from the case. Note: Nozzle blocks
must be removed with the printhead assembly. Take care not to stress
the ink lines.
6) From your Backflush Kit, obtain the small syringe.
7) Cut a 6" (15.2 cm) piece of valve tubing and connect it to the syringe.
8) Cut a second 6" (15.2 cm) piece of valve tubing.
9) Backflush a valve as follows:
Note: Backflush only one valve at a time.
Note: As you perform the next step, make sure to point the tubing away
from yourself and have a cloth handy to absorb ink.
a. Disconnect the inlet tubing from the inlet port and direct into a
collection container. (See Figure 6F.)
Note: Do not disconnect the tubing from the manifold.
b. Connect the second piece of 6" (15.2 cm) tubing to the inlet port and
direct the other end into a collection container.
c. Disconnect the outlet tubing from the outlet port.
d. Fill the syringe with solvent – porous or non-porous, as applicable.
e. Connect the syringe tubing to the outlet port.
f. Reconnect the data lines and power supply cables to the printhead.
g. Plug in the controller and the printhead power supply.
h. Set the controller to purge only the valve you are backflushing. (See
your printhead technical manual for purging instructions.)
i. Block the photocell.
j. Depress the plunger to force solvent into the outlet port and out the
inlet port.
k. Unblock the photocell and cancel the purge.
l. Unplug the controller and printhead power supply.
Содержание PatrionPlus
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Страница 72: ...Operation iv 29669 02080 Rev AG...
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Страница 161: ...Troubleshooting ii 29669 02080 Rev AF...
Страница 184: ...Repair ii 29669 02080 Rev AF...
Страница 212: ...Parts List ii 29669 02080 Rev AF...