Buchi Scrubber K-415 Manuel d'utilisateur télécharger pdf (Page 46)

7 Maintenance and repairs

46 K-415 Operation Manual, Version B

7.6 Washing solution

Used washing solutions may impair the functionality of the Scrubber K-415 especially in the range of

the neutra lization point as a result of strong foaming. Changing the washing solution in appropriate

time (when the color indicator undergoes a color change) keeps the adsorption stage and/or reaction

stage from getting soiled and pre vents the possibility of the pump getting damaged. For a discription

of how to prepare and ﬁll up the washing solution, see chapters 5.9 and 5.10.

NOTE

Make sure to dispose of the used washing solution according to your laboratory guidelines.

7.7 Active charcoal

Exchange the active charcoal as soon as it clumps together or white crystals or other residues

become visible.

7.8 Pump

Flush the pump once a week or after hard use.

To ﬂush the pump, proceed as follows:

• Close the bypass valve a completely (for maximum suction power).

• Disconnect the suction hose d from the absorption vessel and put it into a suitable vessel c with

at least 500 mL of distilled water.

• Disconnect the silencer and remove it.

NOTICE

Risk of a water leakage and power failure.

• Do not pull on the pump output hose.

• Place a

suitable vessel b on the pump output.

•

Switch on the device and collect the waste water from the pump.

• Flush the pump until the collected waste water is clear

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Buchi Scrubber K-415 Manuel d'utilisateur Page 46