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Macro 900 Operation Manual
If the 'REPLACE DO CAP' error occurs during Optical DO Zero calibration, this
usually indicates that the DO Cap needs replacing. Perform a full DO calibration
first at DO Zero then at 100% DO. If that does not cure the problem, replace
the DO Cap (see
If the corrective actions shown above for 'READINGS UNSTABLE' or 'OUT OF
CAL RANGE' errors do not work, thoroughly clean the Probe and try again. If
the 'OUT OF CAL RANGE' error persists, reset the calibration values to Factory
Defaults then try again.
If the 'OUT OF CAL RANGE' error persists when calibrating EC, check you are
using the correct EC Calibration Standard and that the Probe Sleeve is fitted
and tight.
If the 'OUT OF CAL RANGE' error persists when calibrating pH, check you are
using the correct pH Calibration Standard for the calibration point selected.
If the 'OUT OF TEMP RANGE' error persists when carrying out a three point ISE
calibration, check your solution temperatures are within the specified limits with
respect to each other.
Remember:
The Probe sleeve forms an integral, working part of the
Probe's measurement system, and MUST be fitted during calibration
and measurement for correct operation.
Probe without the sleeve fitted, you will get an error message.
10.5. Resetting to Factory Calibration Defaults
In some cases, if there has been a serious calibration error, the easiest way to
rectify the situation is to reset the Probe to its factory defaults. To do this, first
bring up the Calibration screen:
Select Full Cal. This will give you a choice of three electrodes:
Move the cursor arrow to the electrode you want to reset, then press the MR
key. If you select Aux Electrodes, you must press OK first to enter the Aux
Electrode selection screen. Once in that screen, select the Aux electrode you
want to reset then press MR.
© 2013 Palintest Ltd.
Replacing the Optical DO Cap
Calibration
MacroCal
DO 100%
Full Cal
Calibration
pH/ORP
DO/EC
Aux Electrodes
www.palintest.com
in section
14).
If you try to calibrate the
V3
Page 32 of 147
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Troubleshooting
