MH-50B Chemistry Analyzer Operation Manual
30
7.2 Trouble and Handle
phenomena cause
Method
Fail absorbing
a) The pump doesn’t work
b) Loose pipe
c) Absorbing time is zero
d) The pipe is damaged
a) Tight the screw of the pump
b) Cut down a part of the pipe’s tie
c) Install the ASP TIME again
d) Change the pipe(Appendix)
No Display
a) The power doesn’t supply
b) The electricity doesn’t work
c) Signal display line is loose
a) Turn on the power
b) Check the power socket
c) Check the display cable
Dark Display
The contrast of the display is
changed with the environment.
Adjust the contrast adjustor
No Printing
a) No paper.
b) Print paper is blocked.
c) Thermal print paper is in reverse
a) change the new paper
b) install the paper again
c)install the paper again
Fail
Absorbance
a) Do not absorb DI water
b)There are bubble in the
colorimetric cell.
c) Dirty colorimetric cell
d) The lamp is aging
1. Test it with DI water
2. a): Clear the bubble in colorimetric cell
b): Clean the colorimetric cell with CLEAN
c): Change the lamp
Instable
results
a) No absorbance when power on
b) Invalidate reagent
c) Inadequate ASP quantity
d) No STD.
e)Improper wavelength
f) Absorb air into reagent to get high
result
a) Absorbance again
b) Change validity reagent
c) Adjust the ASP quantity
≤
600uL
d) Test the BLANK and STANDARD again
e) Test another wavelength
f) Operate carefully and standard
Contrast
adjustor
