Fluid-Path Disassembly Procedure - JENCONS ZIPPETTE PRO Series Operator Instructions Manual

Fluid-Path disassembly procedure for Cleaning or Replacement
Disassembly should only be undertaken AFTER the unit has been cleaned, using the standard cleaning
procedure described on page 6. For autoclaving follow steps 1-3.
1. Undo the piston sleeve fixing ring by turning it to align with the sleeve slot and sliding it down from
the sleeve (Drawing 9 & 10).
2. Press the two fixing levers on the back of the piston sleeve inwards, and lever the back piston sleeve
away from the front sleeve assembly (Drawing 10 & 11).
3. Remove the front piston sleeve (Drawing 12).
4. Pull out the piston assembly from the glass barrel (Drawing 13).
5. Undo the threaded platform ring of the base platform (Drawing 14) and, turn the stop ring clock-
wise and pull it off the assembly (Drawing 15).
6. Carefully slide off the fixing ring and the threaded platform ring, together with the clear
Polypropylene protection sleeve (Drawing 16).
7. Take out the glass barrel from the base platform. Under the glass barrel is an encapsulated FEP 'O'
ring which should be handled with extreme care (Drawing 16).
8. To remove the FEP dispense tube (Drawing 17): firstly turn the anti-drip tap to the closed position
then lift off the dispense tube protective cover and pull out the dispense tube from its seating.
9. Reassemble the instrument following the above points in reverse order. Make sure that the FEP 'O'
ring is well located into the base platform's recess.
Important points to observe:
• Do not use hard tools to scrape off residue of reagent from the piston.
• Take special care not to damage the piston when inserting it into the glass barrel.
• Bevelled inside edge of the glass barrel must be at the top end when fitted.
• Before tightening the threaded ring fully onto the threaded platform base, rotate the Polypropylene
protection sleeve so that the tooth on its base locates properly into the notch on the threaded ring.
• Make sure the front end of the dispense tube is clipped into the dispense tube protection cover from
the underside
• Do not use force in assembly or disassembly
• Always wear protective clothing and eye protection when disassembling or assembling your Zippette.
Protective clothing and eye protection should also be worn when dispensing.
8
Operator Instructions