WARNING MESSAGE
DESCRIPTION
PROBABLE CAUSES
ACTIONS
Injector Variation
The current calculated injector specific
volume has varied from the last value
or from the entered value by an amount
that exceeds the warning limits. The
limits for the warning are configured on
the Alarm Configuration screen.
This may occur if:
1. Dust is present in the orifice
of the injection solenoid valve.
This may also give an Injector
division warning.
2. Downstream pressure changed (not
stable pressure).
Warning limits are defined and entered
by the operator. No action is required
if the purpose is just monitoring the
“injector specific volume” parameter.
If big variations take place
1. Use “Injector solenoid valve cleaning
with Liquid odorant” procedure.
2. Investigate the downstream pressure.
Injector Division Warning
Type 1 (High Contact)
After every refill cycle for the odorant
calibration cylinder, the injector specific
volume is recalculated. The control
algorithm may divide the value by 2
in an attempt to continue operation
and search for the new correct
value, according to the new process
parameters (working conditions).
This warning may indicate that
the working conditions (process
parameters) changed, in this case
the warning does not require any
activity by the operator (the system
is calculating the new correct
model according to the new
working conditions).
The division (after a refill cycle) may take
place when:
The odorant used volume that was
calculated reaches 30% of odorant
calibration cylinder volume (rated
odorant calibration cylinder capacity) and
the high level contact has not cleared.
This may occur if:
1. The value of “rated odorant
calibration cylinder capacity
parameter” is much lower than the
real volume of the measurement
odorant calibration cylinder (wrong
parameter value).
2. The entered parameter value
for “injector specific volume”
is much greater than the real
capacity of injection (which can be
adjusted mechanically).
3. Odorant calibration cylinder
has overfilled.
4. Injector ball valve is partially closed.
5. Dust is present in the orifice of the
injection solenoid valve.
6. Downstream pressure changed
(pressure not stable).
1. Check the rated odorant calibration
cylinder capacity parameter value.
2. If the system goes to injector alarm,
the injection valve calibration
procedure may be used (in
extreme cases).
3. Odorant calibration refilling should
take at least 45 seconds. Check
odorant tank pressure and/or the
calibration of flow valve (should be
mounted in the liquid line to control
refill time).
4. Check the injector valve ball.
5. Use “Injector solenoid valve cleaning
with Liquid odorant” procedure.
Injector Division
Warning Type 2
(Low Contact)
After every refill cycle for the odorant
calibration cylinder, the injector specific
volume is recalculated. The control
algorithm may decide to divide by 2
the value in an attempt to continue
operation and search for the new correct
value, according to the new process
parameters (working conditions).
This warning may indicate that
the working conditions (process
parameters) changed, in this case
the warning does not require any
activity by the operator (the system
is calculating the new correct
model according to the new
working conditions).
The division (after a cycle refill) may
take place when:
The calculated odorant used volume
reaches 130% of odorant calibration
cylinder volume (“rated odorant
calibration cylinder capacity”) and a low
level signal has not been received.
This may occur if:
1. The value of “rated odorant
calibration cylinder capacity
parameter” is much lower than the
real volume of the odorant calibration
cylinder (incorrect parameter value).
2. The entered parameter value
for “injector specific volume”
is much greater than the real
capacity of injection (can be
adjusted mechanically).
3. Odorant calibration cylinder
has overfilled.
4. Injector ball valve is partially closed.
5. Dust is present in the orifice of the
injection solenoid valve.
6. Downstream pressure changed (not
stable pressure).
1. Check the rated odorant calibration
cylinder capacity parameter value.
2. Check if the entered specific
volume for injector parameter is in
compliance with the real capacity
of injection. If the system goes to
injector alarm, the injection valve
calibration procedure may be used (in
extreme cases).
3. Odorant calibration refilling should
take at least 45 seconds. Check
odorant tank pressure and/or the
calibration of flow valve (should be
mounted in the liquid line to control
refill time).
4. Check the injector valve ball.
5. Use “Injector solenoid valve cleaning
with Liquid odorant” procedure.
Table 4.
Troubleshooting (continued)
- continued -
25
Type Dosaodor-D
