Metrohm 850 Professional IC Cation - Prep 2 - Manual (Page 94)

4.10 Peristaltic pump
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850 Professional IC – Cation – Prep 2
Order
number Name Material Inner
diameter Use
6.1826.360 Pump tubing LFL
(white/white), 3-stop-
per PVC (Tygon) 1.02 mm For sample transfer.
6.1826.380 Pump tubing LFL
(gray/gray), 3-stopper PVC (Tygon) 1.25 mm For inline sample dilution.
6.1826.390 Pump tubing LFL (yel-
low/yellow), 3-stop-
per PVC (Tygon) 1.37 mm For the sample solution in
inline ultrafiltration.
4.10.2.2 Pump tubing connection with filter
The 6.2821.130 filters (44-2) should be changed every 3 months, more
frequently at higher backpressure.
1 2 3
Figure 44 Pump tubing connection – Changing the filter
1 Tubing olive 2 Filter 6.2821.130
Packaging contains 10 items.
3 Filter housing
Replacing the filter
1 Unscrewing filter screw
￭ Screw the filter screw (44-3) out of the tubing olive (44-1) with
the aid of two 6.2621.000 adjustable wrenches.
2 Replacing the filter
￭ Remove the old filter (44-2) with tweezers.
￭ Place the new filter (44-2) flat in the tubing olive (44-1) with
tweezers.
3 Mounting filter screw
￭ Screw the filter screw (44-3) back into the tubing olive (44-1) and
tighten by hand. Then additionally tighten with two 6.2621.000
adjustable wrenches.