MH-50B Chemistry Analyzer Operation Manual
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Appendix 3: Change Pump Pipe
1. Wring the 2 screws with screwdriver in the left side of the back, take the panel board out, there is
a black tube called Pump Pipe;
2. Slide the upper side of the Pump Pipe out of the gap;
3. Pull out the white ties connect with Pump Pipe’s two sides;
4. Get a new Pump Pipe, connect the 2 ties with the Pump Pipe correspondent;
5. Put one side of Pump Pipe in the flute, push another side from the upper flute according to the
middle part;
6. Close the upper board, tight the screws;
Appendix 4: Clean the colorimetric cell
1. Prepare a cup of DI water or alcohol, put the sample tube into the liquor;
2. Press ‘6’ to enter “Utilities” submenu in main menu, then press ‘3’ enter “ADC” interface;
3. Press ‘8’, clean;
4. If use alcohol, discharge the residual alcohol in tube with pressing ‘8’, change DI water twice;
5. Press ‘MENU’ to return to the main menu after cleaning;
Appendix 5: Change Lamp
1. Open the upper board.
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Wring the two screws on the front side in underneath board and back board;
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Slide the upper board for a segment distance along the instrument (Don’t touch the sample
tube), get the upper board and put it on the right side.
2. Find a black box near the sample tube, it is Lamp box;
3. Wring the 2 screws(A.B)in the top of the Lamp box with screwdriver, get the Lamp box out;
4. Wring the 2 screws(C.D)in Lamp holder with screwdriver;
5. Wring the 2 screws(E.F),get the Lamp light out;
6. Replace the new lamp with old lamp, tight screws(E.F)
7. Tight 2 screws(C.D)
8. Put the Lamp box back to the place, tight the 2 screws;
9. Close the upper board, tight the screws.
Screw A, B
Screw C, D
Screw E, F
