Metrohm 893 Professional Biodiesel Rancimat - Manual (Page 21)

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3 Installation
893 Professional Biodiesel Rancimat
￭￭￭￭￭￭￭￭ 13
Figure 6 Drying flask mounted in place
NOTE
The molecular sieve serves to adsorb interfering oxidizing gases as
well as water from the aspirated air.
You can regenerate it in the drying oven at +140 - +180 °C for 24
to 48 h (see Chapter 5.3, page 36).
3 Mount the FEP tubing for the air supply
￭ Screw one end of the FEP tubing 130 mm to the Air out connec-
tor.
￭ Screw the other end of the FEP tubing to the Air/N
2
in connec-
tor.
3.2.2 Mounting the external air supply
If the laboratory air is heavily contaminated, an external gas supply with
synthetic air can be provided.
For this, the corresponding accessories must be mounted on the rear of
the 893 Professional Biodiesel Rancimat.
NOTE
If air is supplied externally, the gas flow cannot be regulated in the
computer program.
The gas flow must be set manually using the reducing valve and the gas
flow display.