Metrohm 743 Rancimat - Manual (Page 20)

3.2 Mounting accessories ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
12 ￭￭￭￭￭￭￭￭ 743 Rancimat
Note
The dust filter serves for filtering the air sucked through the air
pump and must be replaced at periodic intervals (see Chapter 5.2,
page 161).
2 Mount drying flask
Caution
Do not fill the hot molecular sieve directly into the drying flask
after regeneration, as otherwise the plastic filter on the filter tube
will melt.
Wait until the molecular sieve has cooled down before filling.
￭ Fill the molecular sieve into the drying flask (4-2).
￭ Screw the filter tube (4-4) on the lower side of the drying flask
cover (4-1) into the opening marked (above) with a dot.
￭ Screw the drying flask cover with mounted filter tube onto the
drying flask and insert in the flask holder (4-3) on the rear of the
Rancimat.
￭ Screw the one end of the FEP tubing 250 mm (4-6) onto that
opening on the drying flask cover at the bottom of which the fil-
ter tube is located.
￭ Screw the other end of the FEP tubing onto the From flask con-
nection (4-7) on the rear of the Rancimat.
￭ Screw the one end of the second FEP tubing 250 mm (4-5) onto
the second opening on the drying flask cover.
￭ Screw the other end of the second FEP tubing onto the To flask
connection (4-9).
Note
The molecular sieve serves for adsorbing interfering oxidizing gases
as well as water from the sucked in air. You can regenerate it in
the drying oven at +140…+180 °C for 24 to 48 h (see Chapter
5.3, page 161).
3 Mount the FEP tubing for the supply air
￭ Screw the one end of the FEP tubing 130 mm (4-11) onto the Air
out connection (4-10).