Tokyo Boeki Labmax 240, Service Manual

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2‑10
1. When R1 probe moves to above the reagent bottle, 20 micro-liter separation air is
aspirated by the action of reagent pump (RP-2).
2. R1 probe goes down till the tip detects the reagent level. Then RP-2 aspirates
10 micro-liter excess reagent volume than designated.
3. R1 probe goes up to the home position.
4. R1 probe rotates to the reaction cuvette position.
5. When R1 probe goes down into a cuvette and stops at the determined position,
designated volume of reagent is dispensed.
6. R1 probe once goes up to the home position and reaction tray rotates to the next
position. Then goes down again and stops. R2 probe, which is in the probe washing
pot, will be washed, following the procedure below.
- Solenoid valve EV-3 switches the line to R2 side and solenoid valve EV-2 will be
ON, which connects to probe washing pump.
- RP-2 dispenses excess 10 micro-liter reagent and separation air 20 micro-liter
into the washing pot.
- Probe washing pump (PWP) are actuated and RP-1 sends solution to wash probe
inside and PWP washes outside.
R1 probe washing is down within the same cycle as R2 washing.
R1 is washed right after the R2 probe reagent dispense.
The procedure of R1 washing is the same as R2 washing except R1 probe is in the
washing pot and solenoid valve EV-3 is switched to the R1 side.
7. After the probe washing, water droplet at the tip is wiped up by a wiping mechanism
at the top of the washing pot when the probe goes down.