Buchi Pump Module C-605 Manuel d'utilisateur télécharger pdf (Page 38)

7 Maintenance

38 Pump Combinations Operation Manual, Version E

7.6 Piston backrinsing

ATTENTION

When working with aqueous saline solutions, residues might collect behind the piston seal. These

residues must be removed since they can contribute to a faster wearing of the seals.

The system can be rinsed with a spraying device

ﬁlled with water. We recommend to use a tissue

at the outlet of the backrinsing to collect the water

drops.

Fig. 7.3: Piston backrinsing with spraying device and tissue

7.7 Changing the valves

Always replace the valves in all pump heads.

For this purpose, proceed as follows:

• Remove the pump head cover.

• Loosen the screws of the pump head and

remove it.

• Using the turix wrench, loosen the valve screw

ﬁttings on the suction and pressure tubing on

the upper and lower side of the pump head.

Fig. 7.4: Uninstalling the ﬁtting

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Buchi Pump Module C-605 Manuel d'utilisateur Page 38