ECP2050
60 / 64
Problem
Caused by / Conditions
Solution
W13, 14, 21, 24, 25, 30; E44,
45, 51.
Pulsation compensation
learning, see
Other
Contact service center.
Save log and info list from
Ecomac or Clarity.
11. M
AINTENANCE
11.1. Periods
Minimal period for check valve and seal exchange is one year.
This period may be
shorter if there are used buffers, high pressure/flow rate, aggressive solvents, everyday use or
other aggravating conditions. In case of such difficult environment it is recommended to exchange
the check valves and seals every 6 months.
Piston replacement can be done approximately once per 5 years when conditions are hard,
or when they are damaged after inappropriate replacement of other parts. When the unit is used
under common conditions, replacement is done approximately once per 10 years.
Checking unit function (Operational qualification OQ, unit validation) under heavy-duty
operating conditions is recommended to be done once per 6 months, or once per 1 year, if the
working conditions are optimal, max. once per 2 years. During unit validation a complete unit
control is proceeded, and according to observed unit condition can be replaced damaged parts.
Periodic control of pumping blocks (working and washing) screws tightness is recommended
once per month.
It is recommended to check lubrication of moving parts of pump mechanics once per year.
Recommended period for replacing mobile phase filters on inlet tubing is one year.
11.2. Cleaning and Decontamination
Follow safety instructions of agents used in chromatography process.
Use dry or moistened cotton cloth for cleaning or unit surface.
11.3. Cleaning Check Valves
) and
clean them using ultrasound
in distilled water or
other solution agent, dissolving used buffers. You may also try a combination of water bath with
inorganic/organic or polar/nonpolar solvent.
11.4. Storage and Transport
If the pump shall be put out of service for a longer period of time or it shall be transported, it
is advisable to purge it with isopropanol and plug it afterwards. Remove unit door before
transportation and pack it to avoid damage during transportation.
