FAULT FINDING AND REPAIR
20509 Issue 7 Jan 2018 4-17
Pressurising the Ink System
It is assumed that work on the ink system has been completed and all
connections, etc. are tight. Correct working also depends on the
accumulator being fully inflated to its correct shape at zero pressure. If
there is any doubt about this, carry out the inflation procedure (see page
-
26).
(1) Make sure that the printer is connected to a full ink container.
(2) Tighten the screws fixing the nozzle plate on the print head (or
reconnect the pipe to the print head manifold in the print head).
(3) Reconnect the input supply and switch on the printer.
(4) Set the Pump Inhibit switch to 1 and the pump should start running.
When the pump stops, the pressure should be normal.
(5) Bleed the ink system (see page 3-5).
(6) Purge the head to remove any traces of air. (see page 3-4).
(7) Check the system for leaks.
(8) Refit the print head cover if necessary.
Priming the Ink System
After any work on the ink system manifold, the system must be primed.
The pump is not designed to prime the ink system from a dry state or for
prolonged dry running. The following procedure should be carried out
without unnecessary delays so that the pump is not damaged.
Remove the cabinet cover. All connections must be complete and the
printer must be ready to switch on. An ink container must be connected.
The Pump Inhibit Switch must be set to 0.
(1) Using tissue to catch any escaping ink, disconnect the feed tube from
the QCD. Place a shallow tray under the vent in the underside of the
cabinet.
(2) Fill a wash bottle with the appropriate solvent for the ink type in the
printer.
(3) Connect the feed pipe to the wash bottle.
(4) Switch the printer on at the power switch on the rear panel. The
green front panel indicator should light.
(5) Begin to squeeze the wash bottle to force wash into the feed pipe
and, at the same time, start the pump by setting the Pump Inhibit
switch to 1. The pump should start and the green indicator in the
switch will light.
(6) Allow wash to be drawn into the printer until the sound of the pump
motor changes, indicating that wash has reached the pump. Set the
Pump Inhibit switch to 0. The pump should stop and the green
indicator in the switch will go out.
To Next Page
Loading...
Need help?
General
