Nova-Tech pH 310 - Manual (Page 22)

43
42
11. Error Messages
LCD
Indicates
Cause
Solution
Display Err
Unr
ecognized input
W
rong input in
Release key
. Select
annunciator
fr
om keypad
selected mode.
valid operations depending on mode.
CAL
&
Err
Calibration err
or
W
rong buf
fer value
Check your buf
fer input
annunciators on/
input at calibration.
value, clean pr
obe.
Buf
fer and
Dirty pr
obe.
See Calibration sections or
electrode
Pr
obe Maintenance section.
indicators blink Battery
Low battery level
Need new batteries
Clean battery contacts.
indicator blinks
or battery
Replace batteries with fr
esh
connection is bad
ones, noting polarity
* See "W
arranty" and "Return of Items" on page 47
If an err
or message appears in the primary
display (the upper r
ow of lar
ger digits),
switching of
f the meter and switching it on
again may eliminate the err
or message.
See figur
e
If err
or persists, or the meter shows
incorr
ect values, r
eturn the meter
.
For a complete diagram of the display
,
see page 5
.
ERR 1 in primar
y display
A
A
10. T
roubleshooting
Problem
Cause
Solution
Power on but
a) Batteries not in place.
a) Check that batteries ar
e in
no display
place and making good contact.
b) Batteries not in corr
ect
b) Reinsert batteries with
polarity (+ and –).
corr
ect polarity
.
c) W
eak batteries.
c) Replace batteries or attach
optional AC
adapter
.
Unstable
a)
Air bubbles in pr
obe.
a) T
ap pr
obe to r
emove bubbles.
readings
b) Dirty pr
obe.
b) Clean the pr
obe and
recalibrate.
c) Pr
obe not deep
c) Make sur
e sample entir
ely
enough in sample.
covers the pr
obe sensors.
d) External noise pickup
d) Move or switch of
f
or induction caused by
interfering motor
.
nearby electric motor
.
e) Br
oken pr
obe.
e) Replace pr
obe. See page 45.
Slow response
a) Dirty/Oily pr
obe.
a) Clean pr
obe. See "Pr
obe
Car
e & Maintenance",
page 40.
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