25
Metalyser
®
Soils HM4000
Instruction Manual v3.0
3.4. TROUBLESHOOTING
Whilst your Metalyser
®
is designed to be very reliable, problems may occur
throughout its working life. The following tables are intended to help you
diagnose and resolve these problems simply and quickly. Should you not be
able to resolve the problem please contact your supplier and they will be able
to assist you.
When troubleshooting your Metalyser
®
the following checks should be undertaken in this
order:
1. Reference Electrode
– does the Reference Electrode contain the right level of
electrode fill solution? Is it damaged at all? Are there air bubbles in the inner
tube?
2. Stirrer
– does the stirrer rotate? Does it mix the powder reagents when
operating?
a.
To check this run the stirrer according to the instructions on page 13
2. Working Electrode
– is the Working Electrode plated correctly?
a.
Is WE1 grey in colour or is WE2 yellow in colour? Has the grey WE1 Hg
Plate been wiped off before the WE2 plating?
3. Solutions
– could the solutions have been contaminated? Have the correct
buffers been added in the correct order? Has the right amount of standard
been added?
The Metalyser
®
will try and help you with determining the problems. See below.
Displayed Error
Probable Cause
> L.O.D
The metal concentration is above the maximum limit of
500mg/kg.
Dilution should be used.
< L.O.D
The metal concentration is below the minimum limit of
detection for the method being used.
Addition error
The increase in metal response was not
sufficient
enough to determine the addition.
Calibration error
The addition was not added or the metals have not
been detected
.
