eutech-instruments ecoscan do 6 do meter Manual De Usuario
Instruction Manual
DO 6
56
9 TROUBLE-SHOOTING
GUIDE
Problem Cause
Solution
No display
when turned
on
when turned
on
a) Batteries not in place
b) Batteries not in correct
polarity (+ and –
position).
position).
c) Weak
batteries
a) Remove rubber boot/stand. Check
that batteries are in place and
making good contact.
making good contact.
b) Re-insert batteries with correct
polarity.
c) Replace
batteries.
Unstable
readings
readings
a) Insufficient electrolyte in
probe.
b) Air
bubbles
trapped
around the probe.
c) Dirty or damaged probe
d) Probe not deep enough
in sample.
e) External noise pickup or
induction caused by
nearby electric motor.
nearby electric motor.
f)
Broken probe.
a)
Fill probe with electrolyte &
replace pre-membraned cap.
replace pre-membraned cap.
b)
Stir or tap probe to remove
bubbles.
bubbles.
c)
Clean the probe and re-calibrate.
d)
Make sure sample entirely covers
the probe sensors.
the probe sensors.
e)
Move or switch off interfering
motor.
motor.
f)
Replace probe.
Slow
response
response
a) Dirty / Oily probe.
b) Temperature
is
changing.
a)
Clean probe. See “Probe Care &
Maintenance.
Maintenance.
b)
Allow time for temperature to
stabilize
stabilize
Not
responding
to key press
responding
to key press
a)
HOLD mode in
operation indicated by
flashing display.
operation indicated by
flashing display.
b)
Damaged key pad.
c)
Internal program error.
a)
Cancel HOLD mode.
b)
Return to dealer.
c)
Reset all internal programs by
reinserting batteries.
reinserting batteries.