Put the system in Manual mode to start the injection
(push Manual button).
In order to calibrate the injection solenoid valve, verify
from “Current Injection Data” the current Specific
Volume value related to the “in calibration” injector.
This value will change at every refilling of the odorant
calibration cylinder. See Screenshot 5.
Screenshot 5: Current Injector Data
If Specific Volume value related to the “in calibration”
injector is > than Entered Volume for Injector value,
then rotate the metering device screw on the injection
solenoid valve counterclockwise in order to reduce
orifice size.
See Figures 12 and 13, item 39 for the injection
solenoid valve. See Figure 10, item 39G for Metering
Devices screw for injection solenoid valve.
If Specific Volume value related to the “in calibration”
injector is < than Entered Volume for Injector value
then do the opposite.
Use a common screwdriver for calibrating the
metering device.
Note
Turning the screw a little corresponds to
high odorant flow rate variation.
Wait at least two refilling cycles before adjusting the
metering device. Have at least two similar (+/- 5%)
value readings before validate it. See “% From Last”
value in Screenshot 5.
Specific Volume value is acceptable when it is equal to
entered value +/- 10%.
See “% From Start” value in Screenshot 5 (acceptable
values: 90% Entered Volume 110%).
Put the system in Disable mode.
Change Manual mode Gas Flow rate to the desired
value in working conditions.
Put the system in Auto mode to start injection.
Purge/Wash Cycle by Means of
Natural Gas (Odorant Recovery and
Gas Washing Cycles)
CAUTION
The purging/washing operation has
to be completed before any routine
or extraordinary maintenance
intervention and before dismantling the
Type Dosaodor-D odorizing system.
During washing operation with natural gas, the control
activates both injectors at the same time (to improve the
drying process and reduce time for the operation). Only
the selected injector is used in case of injector flush.
The Purge/Wash cycle drains out all the odorizing liquid
present in the injection system to allow partial or full
dismantling without particular problems (odor or toxicity)
for the operators.
The odorant inside the Type Dosaodor-D system is
pushed into the odorizer tank. Only a small part is
injected to the line.
Odorant Recovery Cycle must always take place
before Gas wash. Follow the procedure below (refer
to Type Dosaodor-D Software for Configuration of
Type Dosaodor-D Odorant Injection System
Manual (D103117X012)):
• Close the refilling manual valve close to the odorant
calibration cylinder (look at Figure 6).
• Put the system in Refill and Disabled mode
sequentially several times (refer to Type Dosaodor-D
Software for Configuration of Type Dosaodor-D
Odorant Injection System Manual (D103117X012)).
This will increase the odorant calibration cylinder
pressure (as the Gauge mounted on the odorant
calibration cylinder indicates).
• Put the system in Purge/Wash mode
Type Dosaodor-D Software for Configuration
of Type Dosaodor-D Odorant Injection System
Manual (D103117X012)).
• Open the refilling manual valve close to the odorant
calibration cylinder (look at Figure 6).
• Start Odorant Recovery Cycle (refer to Dosaodor-D
Software for Configuration of Dosaodor-D Odorant
Injection System Manual (D103117X012)).
18
Type Dosaodor-D
