9. MAINTENANCE
9.1 Fault finding during commissioning
If a BA364G Counter fails to function during
commissioning the following procedure should be
followed:
Symptom
Cause
Check:
No display
No power supply,
or incorrect
wiring.
Note: Terminals 2,
6, 10 & RS2 are
interconnected
within the
instrument.
That there is
between 10 and
28V on terminals
1 & 2 with
terminal 1
positive.
Counter is
receiving power
but pulse input
indicator not
rotating.
No input pulses,
incorrect input
configuration,
incorrect linking
of terminals 3 & 4
and
terminals 7 & 8.
Input
configuration.
Linking of
terminals 3 & 4.
and
terminals 7 & 8.
That input signal
polarity is correct.
Pulse input
indicator rotating
but incorrect rate
display.
Incorrect rate
display calibration
5CALE
.
r
t-bA5E
Pulse input
indicator rotating
but incorrect total
display.
Incorrect total
display
calibration.
Remote reset
switch contacts
closed.
5CALE
.
t
That RESET
annunciator on
display is not
activated. If it is,
check reset wiring
and switch.
Pulse input
indicator rotating
but total display
showing
9.9.9.9.9.9.9.9
or
-9.9.9.9.9.9.9
Or if shown on
the lower display
9.9.9.9.9.9
or
-9.9.9.9.9
Total display has
overflowed.
Reposition
decimal point in
total display or
enter a different
5CALE
.
t
to reduce total
display
magnitude.
Unstable rate
display
Noisy pulse input
signal
Eliminate source
of electrical noise.
Increase
debounce and/or
display filter.
Unable to enter
configuration
menu.
Incorrect security
code
That the correct
security code is
being used.
Contact BEKA if
code is lost.
Alarms do not
function
Alarms have been
disabled following
calibration
change.
Re-enable both
alarms.
9.2 Fault finding after commissioning
ENSURE PLANT SAFETY BEFORE
STARTING MAINTENANCE
Live
maintenance
is
permitted
on
intrinsically safe equipment installed in a
hazardous area, but only certified test
equipment should be used unless a gas
clearance certificate is available.
If a BA364G Counter fails after it has been
functioning correctly, the following table may help to
identify the cause of the failure.
Symptom
Cause
Check:
No display
No power supply.
That there is
between 10 and
28V on terminals
1 & 2
Pulse input
indicator not
rotating.
No input pulses
Output from
sensor.
Wiring between
sensor and
BA364G Counter.
Unstable rate
display
Noisy pulse input
signal
Locate source of
electrical noise, or
increase
debounce and
rate display filter.
If this procedure does not reveal the cause of the
fault, it is recommended that the instrument is
replaced.
9.3 Servicing
We recommend that faulty BA364G Counters are
returned to BEKA associates or to your local BEKA
agent for repair.
9.4 Routine maintenance
The mechanical and electrical condition of the
instrument should be regularly checked. Inspection
frequency
should
be
adjusted
to
suit
the
environmental conditions.
9.5 Guarantee
Instruments which fail within the guarantee period
should be returned to BEKA associates or our local
agent. It is helpful if a brief description of the fault
symptoms is provided.
9.6 Customer comments
BEKA associates is always pleased to receive
comments from customers about our products and
services. All communications are acknowledged and
whenever possible, suggestions are implemented.
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