4 maintenance and servicing, 1 maintenance by metrohm service, 2 care of the unit – Metrohm 813 Compact Autosampler User Manual

Page 43: 3 replacing the pump tubing

Appendix

813 Compact Autosampler

4.4 Maintenance and servicing

4.4.1 Maintenance by Metrohm service

is best done as part of an annual service performed by specialists

from the Metrohm company. If work is frequently performed with

caustic and corrosive chemicals, it may be necessary to shorten

the interval between servicing.
The Metrohm service department is always willing to offer expert

advice on the maintenance and servicing of all Metrohm instru-

ments

4.4.2 Care of the unit

The 813 Compact Autosampler requires proper care and atten-

tion. Ex-cessive contamination of the instrument could possibly

lead to malfunctions and a shorter service life of the inherently

rugged mechanical and electronic parts.

Wipe up spilled chemicals and solvents immediately. The con-

nectors (in particular the power supply) should be protected from

contamina-tion. The 813 Compact Autosampler should never be

operated without plug cover

The unit has been constructed in such a way as to virtually eliminate

the possibility of penetration of corrosive media into the interior of the

instruments. If such a situation does occur, disconnect the mains

plug of the 766 Compact Autosampler immediately to prevent exten-

sive damage to the instrument electronics. Inform Metrohm service if

your instrument has been damaged in such a way.

The instrument must not be opened by untrained personnel. Please

comply with the safety notes in section 2.2.

4.4.3 Replacing the pump tubing

Pump tubings are consumable material with a limited lifetime and

should be replaced at regular intervals (approx. every 2 weeks

under continuous use).

The working life of pump tubing depends to a considerable extent

on the contact pressure. This is why the contact pressure must

be correctly set as described in section 2.3.7. If the pump is to

remain switched off for a lengthy period of time the tubing car-

tridges should be raised completely by loosening snap-action

lever

on the right-hand side (the pre-set contact pressure re-

mains unchanged).