Guangzhou EC-PACK Packaging Equipment Co., Ltd.
EC-JET 1000Pro Continuous Inkjet Printer
94
assembly, a pressure loss can result due to reduced flow;
● the stainless steel inserts, when pushed into the PTFE tubing, have pared off a little of the inner wall of
the tubing causing a blockage which reduces flow, and hence pressure;
● a leak has developed at an assembled or welded joint.
Manifold Assembly
● the pressure transducer is faulty. Check the transducer and its associated wiring before suspecting a
fault in the pressure circuit hybrid of the IPM PCB;
● the vacuum venture has either become blocked, or the stainless steel insert has been lost through
incorrect assembly;
● a leak has developed at an assembly joint or crack. The manifold has simply become worn-out after
years of ink flow.
10.5.3
1 Problem Solving - Printhead Mechanical Faults
FC32 Jet Alignment Problems
Possible causes:
● the jet has been shut down incorrectly;
● ink has been leaking from the nozzle during a period of non-use;
● the ink is contaminated causing quantities of salt deposits to build up around the nozzle;
● the nozzle problem (the cap loosed, the diamond cracked, the nozzle assembly distorted)
Before attempting to rectify a jet alignment problem, it is advisable to investigate which of these possible
causes is most likely to have occurred, and to take the appropriate steps to ensure it does not reoccur.
The first thing to do is to clear the nozzle, which will most often cure the problem. Clearing the nozzle
should remove any deposits of ink or debris which could be causing an obstruction in the nozzle orifice,
resulting in jet misalignment.
If clearing the nozzle does not solve the problem, it will be necessary to call your local Distributor for a
EC-JET approved engineer.
How to clearing the Printhead Nozzle
The nozzle has a very small orifice and it is possible for this orifice to become blocked in a number of
ways, for instance: dried ink, foreign debris introduced into the ink supply, or contamination of ink types.
The most common occurrence is when ink has dried within the nozzle and caused a restriction. In this
situation, the first course of action is to perform a series of nozzle clear routines. In normal operation, ink
is supplied to the nozzle under pressure and is emitted from the orifice as a jet. When a nozzle clear is
performed, vacuum is applied to the nozzle, and air and solvent can be drawn the reverse way into the
nozzle to clear any restrictions.
To perform a series of nozzle clears, call up the Setup menu from the CURRENT MESSAGE screen, by
pressing the
key:
