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Instructions for Use Sarpette
4.2
Cleaning
The removed volume unit (lower part) of the pipette can be cleaned with water or alcohol. In cases of heavy
soiling, the individual parts can also be immersed in a disinfectant solution. Proper cleaning is necessary if liquid
has inadvertently penetrated into the pipette interior. Rinse and dry the instrument before assembly. Remove
particularly stubborn residues in the ultrasonic bath. Before assembling the pipette, lightly grease the O-ring (see
below).
4.3
Disassembly of the volume unit and replacement of the O-ring, models – 1000 µl (Fig. 6)
4.3.1 Remove the volume unit (lower part):
1. Press the ejection button (2), turn the ejection nut (20) or (24) to the left for 2 ml and remove.
2. Unscrew the cylinder (18).
3. Push the operating button down completely, then pull out the piston.
4.3.2 Replacing the O-ring and PTFE sleeve:
1. After removing the lower part, remove the cylinder (18) and press it onto both mandrels of the ring (14) with
the aid of a pipette tip or a pointed object.
2. Release the cylinder ring, pull out the spring (15) to reach the O-ring/PTFE sleeve.
3. Replace defective parts. Remove excess grease from the piston (13).
To avoid possible damage to the PTFE sleeve, place it on
the piston (13) and only then attach the O-ring (17).
4. Lightly grease the piston, PTFE sleeve and O-ring and reassemble the volume unit.
T he O-ring Seal Cuff Assembly is not accessible on 2, 10, 10Y and 20 μl models. If there is a
lack of tightness, the complete cylinder must be replaced.
4.3.3 Replacing the O-ring:
1. Unscrew the piston rod (21), remove the spring positioners (22, 23) and the spring (15).
2. If necessary, replace defective parts. Grease the O-ring (17) and cylinder (18) evenly.
6
M
®
Instructions for Use Sarpette
4.4
Disassembly of the volume unit and replacement of the O-ring, models 5 and 10 ml (Fig. 7)
1
2
3
4
5
12
12
12
12
12
12
12
21
13
13
13
21
13
13
6
22
22
14
15
14
15
7
23
23
15
15
17
17
16
16
17
17
13
13
8
18
18
18
18
18
9
33
10
19
19
19
19
19
11
20
20
20
20
20
815 : 1, 2, 5, 10 L
815 : 1, 2, 5, 10 L
815 : 1, 2, 5, 10 L
825 : 2, 10 L
825 : 2, 10 L
815/825 : all other models
815/825 : all other models
All models
815:
815/825:
1. Ejector cushion
825 : 2, 10 L
12. Circlip
(except 825.0010Y)
(except 825.0010Y)
1,2, 5, 10, 20 µL
all other sizes
(except 825.0010Y)
2. Ejection button
13. Piston
825:
2, 10, 10Y, 20 µL
3. Spring washer
14. Ring
4. Smartie Cap
15. Spring
5. Ejection spring
16. PTFE sleeve
6. Counter unit (adjustable)
17. O-Ring (piston)
7. Dosing unit (fix)
18. Cylinder
8. Handpiece
19. Ejector
9. Window
20 Ejection nut
10 Screws, handpiece (2x)
21. Piston rod
11. Ejection rod
22. Top spring positioner
4.4.1 Remove the volume unit (lower part):
1. Turn the ejection nut (20) and separate it from the ejection cap (24).
2. Unscrew the cylinder (18), press the operating button, then pull out the piston.
4.4.2 Changing the O-ring:
1. Press down both clips of the cylinder (18) simultaneously and without exerting force and separate them from
the ejection sleeve (25). Remove piston assembly.
2. Unscrew the piston rod (21), remove the spring positioners (22, 23) and the spring (15).
3. If necessary, replace defective parts. Grease the O-ring (17) and cylinder (18) evenly.
4. Reassemble the piston assembly, cylinder and ejection sleeve.
5. Screw the cylinder onto the pipette, press the operating button (B) down fully and lock the piston rod.
M
®
12
21
27
24
24
24
22
15
23
25
25
25
28
17
13
18
18
18
29
30
26
26
26
32
31
20
20
20
835 : all models
835 : all models
835: 5 and 10 mL
855: all sizes
835 : all models
23. Bottom spring positioner
24 Ejection cap
25. Ejection sleeve
26. Ejection screw
27. Cover assembly
28. Arm
29. Piston assembly
30. Cylinder unit
31. Housing
32. O-ring (cone, 200 µl)
33. Calibration slide
7
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