Intensive Cleaning - BRAND Titrette 4760141 Operating Manual

12 Cleaning

12.2 Intensive cleaning

To avoid mixing up components, do not dismantle several instruments at the same time. Calibration
and, if applicable, an adjustment must always be carried out after dismantling or replacing a dispens-
ing unit.
1. Preparing for intensive cleaning
a.
Always perform a complete standard cleaning before further dismantling the instrument.
b.
Pull out the recirculation tube and the telescopic filling tube.
2 Removing and cleaning/replacing the titration tube
a.
b.
3. Cleaning/replacing the dispensing unit
(Note the design changes from 2012 and from serial number 01K, see Intensive cleaning, p. 73). The
dispensing unit consists of a piston and a dispensing cylinder with a valve block. If liquid is found
above the piston, the piston must be replaced. We always recommend replacing the complete dis-
pensing unit.
a.
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Operating manual
(Note the design changes from 2012 and from serial number
01K, see Intensive cleaning, p. 73)
a.
Set the valve to 'Recirculate' and pull the valve lever up-
wards to remove it (Fig. a).
b.
Hold the titrating tube as shown in the figure. To dis-
connect, push the discharge tube housing all the way
up, then pull it forward with gentle up and down mo-
tions (Fig. b).
c.
Clean the titration tube with the integrated discharge
valve (ultrasonic bath) or replace it.
a.
Hold the piston rod and slowly pull the piston out of the
dispensing cylinder (Fig. a).
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