Servicing And Cleaning; Vitlab - VITLAB micropipette Gebrauchsanweisung

14. Servicing and Cleaning

14.1. VITLAB

micropipette up to 1000 µl
®
1. Servicing
Inspect the pipette tip cone for damage.
Inspect the piston and seal for contamination.
Test the instrument's piston seal. To do this affix a tip, and
aspirate a sample. Hold the instrument vertically, with the sample
in the tip for approximately 10 s. If a drop forms at the tip orifice,
see the troubleshooting guide on page 36.
2. Disassembly and cleaning
1. Unscrew the pipette shaft (S) from the hand grip.
2. Unscrew the upper part of the ejector (A) from the pipette
shaft.
3. Pull the shaft (B, C and D) out of the lower part (E) of the ejec-
tor.
4. Unscrew the piston unit (B).
Note:
Piston remains connected with
piston unit (B)!
5. Remove the seal with spring (C) (this is non-removable on 10
µl pipette models).
6. Clean the parts shown with a mild soap solution or isopropa-
nol and then rinse with distilled water.
7. Allow the parts to dry (max.120 °C/ 248 °F).
8. Grease piston and seal with a very thin layer of silicone grease.
Please use only the recommended silicone grease, see acces-
sories page 33.
9. Assemble the ambient temperature parts in reverse order from
above. Piston unit and upper part of the ejector (A, B) should
only be hand-tight.
A
B
C
D
S
E
(For illustration
purposes only)
31