EBS EBS-6100 - Page 87

EBS
Ink-Jet Systems
®
 EBS-6100 Printer User's Manual
 Paragraph 4 - Operating the Printe
r
20070529#20.5
 85
Alarm LED
Message on the terminal display
Description
LED
PH. ERR.
PHASE ERROR
EBS-6000
EBS
Head phasing error.
There are the following major reasons for a phasing error
(no monitoring signal from the gutter):
 the nozzle is partially or completely clogged - clear the
nozzle,
 ink drops fail to fall into the gutter (a risk of flooding
the head occurs) - adjust the ink jet path,
 the gutter is soiled with fluid ink or a thick layer of dry
ink - wash the gutter with solvent; sometimes it may
be required to dry the gutter with a jet of air,
 very strong electromagnetic interference in the vicinity
of the head - screen the head, i.e. check whether
metal screens are installed at the bottom of the head
and whether the metal casing of the head is
electrically connected with the head casing via a fixing
screw; check whether the yellow and green earth wire
is well connected to the head casing on one end and
to the printer housing (the printer’s earth) on the other,
 the hose connecting the head with the printer is
subject to vibration or periodical shocks - fix the hose,
 the ink filter inside the gun or the main ink filter are
clogged - replace the filter,
 unsuitable ink pressure in the system - set the rated
pressure inside the ink system,
 ink viscosity is outside the range between -5 and +15
(ink is too thin or too thick), see paragraph 4.3 Print
Head Status,
 partial vacuum is too low for the following reasons:
• the outlet of consumed air is clogged or necked
down (NOTE: there is a risk of flooding the printer
with ink!!!), clear the outlet,
• the partial pressure generation pump is soiled or
damaged - dismantle the pump and wash it with
solvent or replace,
• some valves are damaged - replace the damaged
valves.
 the phasing signal cable or phasing electronic circuit
are damaged,
 damage in the breaking circuit - ink is not broken into
droplets properly,
 damage in the charging circuit - ink drops are not
charged properly.