User Guide

Instruction Manual pH 510/ Ion 510
24
7.2 Troubleshooting
PROBLEM PROBABLE CAUSE REMEDIAL ACTION
No display a) Mains power not switched on.
b) AC Adapter socket not inserted properly.
a) Switch on the power supply.
b) Re-insert AC Adapter socket.
Unstable reading a) Insufficient reference electrolyte in
electrode.
a) Fill electrode with reference electrolyte.
b) Broken electrode b) Replace electrode.
c) External ‘noises’ or induction ( e.g.
electrical ‘noise’ caused by a nearby
motor)
c) Remove or switch off interfering device.
d) Dirty electrode. d) Clean the electrode. Hydrate, then rejuvenate if
necessary.
Slow response a) Dirty electrode. a) Clean electrode. Hydrate, then rejuvenate if
necessary.
Meter not
responding to key
press
a) HOLD mode in operation.
b) Internal program error.
a) Cancel HOLD mode. Press Hold button.
b) Reset all internal programs by removing and
reinserting the A/C adapter.