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60
MW180 pH / mV / EC / TDS / NaCl / Temperature Bench Meter
14. TROUBLESHOOTING
SYMPTOMS
PROBLEM
SOLUTION
Slow response /
Excessive drift
Dirty pH electrode
pH electrode: Soak the electrode tip in
MA9016
for 30 minutes, then follow the
Cleaning procedure
Dirty conductivity probe
EC probe: Remove and clean the sleeve.
Make sure the four rings on the probe
are clean.
Reading fluctuates
up and down
(noise)
Clogged/dirty pH electrode
junction. Low electrolyte level
(refillable electrodes only)
Clean the electrode. Refill with fresh
MA9012
electrolyte
Conductivity probe sleeve not
properly inserted; air bubbles
inside sleeve.
Make sure the sleeve is correctly placed.
Tap the probe to remove air bubbles.
Display shows the
reading blinking.
Reading out of range
Recalibrate the meter.
Check the sample is within measurable
range.
Make sure the autoranging feature is not
enabled.
Meter fails to
calibrate or gives
faulty readings
Broken probe
Replace the probe.
LCD tags displayed
continuously at
startup
ON/OFF key
is blocked
Check the keyboard.
If error persists, contact Milwaukee
Technical Service.
“Internal Er X”
Internal hardware error
Restart the meter.
If error persists, contact Milwaukee
Technical Service.