18
INM MTL 130-0202 Rev 4
6.3 Trouble-shooting chart
NOTE
It is assumed that the instrument and its installation have been checked for power supply
health, integrity and correctness of wiring and mechanical damage.
If there is any doubt regarding interpretation of these instructions or the corrective actions
to be taken, contact your local MTL Gas sales office for clarification.
KIM = Katharometer Identity Module (see photograph on next page).
SYMPTOM
POSSIBLE CAUSE
TEST
ACTION
Instrument appears to be
“dead”.
1. No power.
1. Check power on
supply terminal.
1. Reinstate if
necessary.
2. Fuse blown
2. Check main fuse in
AC power terminal block
- see Figure 5.
2. Replace if necessary,
check supply voltage is
correct. If fuse blows
again see next symptom.
3. Internal connection
failure.
3. Disassemble and
check all connections.
3. Replace KK650
electronics –
see section 7.9
Instrument repeatedly
blows fuses.
1. Wrong supply
voltage.
1. Check actual voltage
supply with that shown
on the analyser data
label.
1. Contact your
local MTL Gas
sales office.
2. Wrong value or type
of fuse.
2. Check instrument
data label for correct
fuse.
2. Replace as
necessary.
Fault code between 1
and 32 is displayed - see
manual sec 5.2
1. Unexpected gas
applied; e.g. high
hydrogen content
more than 60% over
instrument range.
1. Pass air through the
analyser.
1. Check to see if faults
still exist, if not, check
cause 2 then 3.
2. Sensor
contaminated.
2. Clean sensor as per
sections 7.5/7.6
2. Check fault status,
if OK recalibrate
instrument.
3. Electronics failure.
3. Replace electronics
as per section 7.9
3. Recalibrate
instrument.
Fault codes 64 to
131072 will only occur
during calibration.
1. Following a sensor
change
1. Sensor and KIM are
not matched.
1. Check that serial
numbers match – see
Fig. 4 in manual for
location of KIM
1. Replace/exchange
as necessary.
2. If these fault codes
are displayed when
KIM and sensor are
known to match
2. Calibration gas
incorrect or not flowed
for sufficiently long.
2. Check gas - replace
as necessary - and flow
for at least 10 minuets
at the correct flow rate
- refer to calibration
section in manual
2. Try to recalibrate
instrument.
3. Fault code remains
3. Memory corrupt
3. Reset factory
settings – see section
7.10.2 and try to
recalibrate.
4. Fault code remains.
4. Sensor
contaminated.
4. Clean sensor as per
sections 7.5/7.6 and
recalibrate.
5. Fault code remains.
5. Electronics failure.
5. Replace electronics
assembly as per
section 7.9
