Thermo Fisher Scientific EcoScan CON 6 & TDS 6 - Manual (Page 39)

Instruction Manual CON 6/TDS 6
35
8 TROUBLE-SHOOTING GUIDE
Problem Cause Solution
Power on but
no display
a) Batteries not in place
b) Batteries not in correct
polarity (+ and –
position).
c) Weak batteries
a) Check that batteries
are in place and
making good contact.
b) Re-insert batteries with
correct polarity.
c) Replace batteries.
Unstable
readings
a) Air bubbles in probe.
b) Dirty probe.
c) Probe not deep
enough in sample.
d) External noise pickup
or induction caused by
nearby electric motor.
e) Broken probe.
a) Tap probe to remove
bubbles.
b) Clean the probe and
re-calibrate.
c) Make sure sample
entirely covers the
probe sensors.
d) Move or switch off
interfering motor.
e) Replace probe.
Slow response a) Dirty / Oily probe. a) Clean probe. See
“Probe Care &
Maintenance”.