RA-4 Autosampler Height Adjustment

RA-4 Autosampler Height Adjustment

This procedure can be used to adjust the autosampler height to accomodate sample tubes that have a different height than the ones that came with the Instrument

1. Measure the sample tube length
2. Calculate difference between the sample tube you are using and 120mm (standard sample tube length)
            Ex) If tube length is 122mm, 120-122=-2mm

3.  Open maintenance screen → Parameter(PW:0219) → SYSTEM



4.  The OFFSET LFT box changes the height of where the arm will try to seal on the sample tube (1 pulse = 0.01738mm)
        
1 pulse = 0.01738mm

The current OFFSET value is shown on the left side of the blank column. You can change the value by inputing a new value in the box and hitting Enter

      Example) if difference is -2mm and OFFSET LFT value is 20, →20-2/0.01738=-95   enter  -95 to OFFSET LFT


5. After inputting the new OFFSET-LFT value, check the lift position:


Open maintenance screen


Click V1, V2 and V3 ON 


Enter No.1 at Bubbler Side and click +0mm


      The Arm will move to position No.1 and the lift will go down


Click A.Pump CW


     Check flow rate (should be 0.15 – 0.18l/min)



Adopt the same procedure No.40 and No.70 



If each flow rate is not within 0.15 – 0.18l/min, adjust OFFSET LFT and check lift position


Repeat above procedure until each flow rate falls within 0.15 – 0.18l/min

    • Related Articles

    • RA-4300 Autosampler Arm Adjustment

      This procedure can be used to adjust the arm so that it is properly sealing on the sample test tubes RA-4300 Autosampler Adjustment 1. Power on the RA-4300 and open the software 2. Open Run→Maintenance 3. Place a blank tube in position 1, 47, and 77 ...
    • SC-3 Autosampler Alignment

      Pre-Checks 1. Looking down on the autosampler head, there are two screws that go through metal springs  and attach to the cap.  Ensure that they are snug, but do not strip them. 2. Run a few tests sample runs to see if there is a consistent pattern ...
    • SC-3 Autosampler Alignment Adjustment

      Pre-Checks 1. Looking down on the autosampler head, there are two screws that go through metal springs and attach to the cap.  Ensure that they are snug, but do not strip them. 2. Run a few tests sample runs to see if there is a consistent pattern of ...
    • Removing Combustion Tube - MA3000

      Removing the Combustion Tube Carry out maintenance of the heated sections only after the power switch has been turned OFF and the heater has cooled down to room temperature or it could result in burns. 1.  With the power off remove the top cover and ...
    • RA-4 Series Autosampler turntable belt adjustment

      (1) Please remove the right side cover. You'll see the belt of the turntable. (2) Please loosen 4 screws and 2 nuts (Blue circle). (3) Please adjust belt tension by 2 screws (Red circle). (4)  Re-tighten all the screws and nuts after the belt has ...