Model 420 & 425 Flame Photometer
425 91 001
Issue 22
1
st
December 2016
ECN 1410 & 1932
- 59 -
Error
Message
Possible causes
Things to try
Way out for user
E26
Detector circuit
saturated in Measure
mode.
Sample not diluted
correctly.
Check dilution of
sample.
Re introduce correctly
diluted sample.
E29
Sample reading over-
range.
(In measure only)
(Output shows ***.*
for value).
Maximum reading that
display can produce is
"199.9".
Check concentration of
sample. Increase
sample dilution.
In CONT. E29 is displayed
until something causes
reading to fall below
"199.9". In PEAK E29 is
displayed until cancelled
by introduction of new
sample and press of 'Print'.
E30
Li signal outside limits
in blanking. (In Ref.
mode only). (E30
displayed on Ch2 and
"Ref." flashes).
Li Concentration in the
final Blank solution
should be 100ppm.
Check source of Li.
Check dilutor and
tubing. Check
nebuliser.
E30 is displayed for 5s,
then automatically returns
to start of blanking. No
output sent.
E35
Li out of range in
m Ref. mode.
(E35 displayed on
active channels and
"Ref." flashes).
Limits on the excursions
of the Li signal in ref.
mode are ± 20% about
the value at calibration.
Either Li has run out or
there is a fault with the
instrument or dilutor.
Check source of Li.
Check dilutor and
tubing. Check
nebuliser.
E35 is displayed on active
channels and "Ref."
flashes for 5s, then
automatically returns to
start of blanking. Aspirate
a blank solution and press
'Blank'.
E39
Li signal outside limits
in calibrate. (In Ref.
mode only). (E39 is
displayed on Ch2 and
"Ref." flashes).
Li Concentration in the
final Standard solution
should be 100ppm.
Check concentration of
sample. Increase
sample dilution.
E39 is displayed for 5s,
then automatically returns
to start of calibrate (does
not go back to beginning of
blanking). Ensure diluent
has correct Li
concentration.
E61
Flame had not ignited
by the end of the ignite
cycle.
No gas from supply; gas
leak; no water in constant
head tube; air pressure
low or zero (compressor
problem, wrong setting of
regulator or leak).
Check that there is gas
and that it is connected;
check that the constant
head tube is full; check
there is air, that it is
connected and that the
pressure showing on the
gauge is correct.
Switch off, wait a moment
then switch on again.
E62
Battery Back up
Failure on Power On.
Circuit Fault or Battery
fault.
Can reset Filter Factors.
See Manual.
Press "Blank" to continue.
Have to reset Standard
Values each time user
calibrates.
E68
Serial Interface not
responding.
Serial device not switched
on or faulty.
Switch on device or
replace.
Remove faulty device,
which will remove error
code.
E69
Microprocessor not
responding.
Temporary electronic
transient.
Switch Off and On again
after 15 second delay.
