Spare parts : Item Designation
2 Grooved pin
7 PTFE bearing bushing
8 Adapter
10 Shaft tube
12 Bushing
13 Shaft sleeve
14 Stator
15 Rotor
2001 Rotary shaft assembly
Overview (Fig. 2)
The R 50 agitator shaft is a high-speed ball-bearing rotary shaft. A splash
guard seals it against the medium. The maximum immersion depth of the
unit is 180 mm.
The free-wheeling conical shaft is dangerous. Observe the safety instruc-
tions !
The dissolver disc and cage can be removed for cleaning purposes.
Spare parts : Item Designation
3 Grooved pin
4 Deep-groove ball bearing
5 Circlip
6 Circlip
7 Shim
8 O-ring
9 Bearing bushing
10 Shim
11 Rotary shaft
13 Dissolver disc
14 Cage
16 Static ring
17 Friction ring
18 O-ring
Drive unit:
The drive unit is maintenance-free but not immune from wear. The carbon
brushes of the motor wear down over time and produce grooves in the
collector. To clean the drive use only water with a detergent that contains
tensides, or use isopropylalcohol for stubborn soiling.
Dispersion tools:
The seals in the dispersion tools must be constantly monitored. In the event
of leakage, the suction effect of the rotating shaft can cause the medium to
penetrate as far as the drive unit. If liquid emerges from the side holes at the
top of the shaft tube, stop work immediately and check the seals.
The function of the dispersion heads depends on the condition of the sharp
edges on the rotor and stator. These edges may be blunted very quickly in
abrasive media, reducing the effectiveness of dispersion.
The dispersion tools are cleaned by running them in a solvent which will
dissolve substance residues without harming the seals. Because of the high
flow speed, this is usually sufficient to clean the rotor and stator. The
dispersion tool must be removed and cleaned immediately after use to
prevent residues from adhering to the threads of the rotor and stator and to
prevent the formation of undesirable bacteria cultures.
The dispersion tools may also be sterilized. The following methods may be
used:
A) Chemical methods
Germicidal solutions (formalin, phenol, alcohol, etc.) are good
general-purpose disinfectants. It is important that all disinfectant
residues are then removed with sterilized water.
21
012008
Risk of injury !
Agitator shaft R 50
Maintenance and cleaning
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