Ecom ECP2010, User Manual

Page: 60 / 68

ECP2010 / ECP2010H
60 / 68
Problem Caused by / Conditions Solution
Damaged seal – esp. when
using solvents as Acetonitrile.
It may seem like that bubbles
are formed inside the pumping
system, it is convenient to
exclude other source of
bubbles using degasser.
Try to replace seals
(See
6.7.1.1 ).
The pump is not run-in
properly after seals
replacement. Run-in the pump under optimal
conditions (see
6.7.1.1 ).
Electronic failure. Contact service center.
Flowrate is lower then set
value. Pressure stability. Problems with lower flow rate
occur and usually relate to
problems with pressure
stability
– see solution above.
Solution agent. Solution agents with very high
or very low viscosity may
cause these problems. As well
as not degassed solvents.
Calibration After eliminating above
mentioned reasons, proceed
automatical calibration
FLOW
AUTO
(see 6.7.2.2 ).
Electronic failure. Contact service center.
Motor works hardly/loudly,
there isn’t indicated any
pressure and flow rate is low
or none.
Clogged frit of outlet valve.
Only if check valves with frit
are used. Check the frit, try to clean it or
replace the check valve.
Electronic/mechanic failure. Contact service center.
Reporting of errors and
warnings (Wxx, Exx)
E24 –
PRESSURE PEAK
OVER SAFETY LIMIT!
Operating error. Locate and
eliminate reason for pressure
escalation
– stuck column,
clogged frit behind the unit or
other, above mentioned.
E41 –
PRESSURE OVER
HIGH LIMIT
E28 –
PRESSURE UNDER
LOW LIMIT!
Operating error. Locate and
eliminate reason for pressure
suppression
– leakage from
the system (leaking
purge/degass valve and other,
above mentioned)
W4, E29 –
PUMP LEAKAGE!
REMOVE ALL LEAKS. DRY
UP SENSOR AND WAIT
FOR 60 s TO UPDATE.
Reported according to setting
in
6.2.7 .
Operating error.
Eliminate source of leaking
and dry up surroundings of
sensor (see
6.2.7 )