BUCHI ELS Detector C-650 - Manual (Page 22)

C-650 Operation Manual, Version B 5 Putting into operation 22
5.4 Exhaust venting and drain requirements
WARNING
Risk of toxic fume inhalation.
• Always route the black exhaust tube from the detector into a ventilated fume hood or
exhaust vent.
The exhaust and drain should not be allowed to enter the laboratory atmosphere and any ap-
propriate accessory (e.g. solvent filter) should be disposed of in a manner that meets the local
regulatory authorities for health and safety requirements.
The black exhaust tube from the detector can be cut and should be directed into a ventilated
fume hood or exhaust vent.
The vacuum must be moderate to avoid turbulence in the glass cell siphon or liquid spilled into
the evaporation tube.
Avoid loops or bends in the black exhaust tubing which could cause condensation traps and
could lead to poor results.
If gas from the hood enters the detector (i.e. a negative pressure exists between the detector and
the fume hood), it is possible that foreign material from the hood could contaminate the detector.
Install the drain tubing (it can be cut) in a way to the siphon outlet aligns straight to the waste con-
tainer without loops or bends-, so that the waste liquid flows smoothly through the drain tubing.
Fix the drain tubing at the inlet of the waste container so that the end of the drain tubing never
dives into the liquid in the container.
NOTE
Ensure that the Parafilm
TM is removed from the exhaust tube before installing the unit.
The drain tubing must be directed to an appropriate container regarding to the solvent nature.
The user is responsible for decontamination or recycling of any residue, regarding to the local
authorities environmental requirements.
Please check your local regulatory authorities for health and safety requirements.
The black exhaust line on the back of the unit should be vented to a fume hood. Make certain
that the fume hood withdraws gas from the detector (i.e. there should be a positive pressure be-
tween the detector and the hood). Verify that no tube damage or inappropriate installation could
allow a gas leak in laboratory.
Install the vent tube so that it cannot become blocked or bent, or restrict the gas flow from the
detector to the hood in any way.
Avoid long tube installations in upward direction creating condensation dropping back into the
detector.
If an extension tube is required (i.e. the supplied tube is not long enough), a suitable length of
¾”ID of PVC tubing can be fitted over the exhaust tubing.