Emerson Tartarini Dosaodor-D User manual

Type Dosaodor-D Odorant Injection System
Controlled by Type ROC809 Remote Telemetry
Unit for North America Installation
Figure 2. Standard Wick Insert Figure 3. Type Dosaodor-D Pneumatic Panel
Figure 1. Type ROC809 Remote Telemetry Unit
Instruction Manual
D103102X012
July 2017
Type Dosaodor-D

Specications
The Specications section on this page provides the ratings and other specications for Type Dosaodor-D.
Pneumatic Panel:
Material
Stainless steel plate
Installation
Wall mount
Weight
55 to 100 lbs / 25 to 45 kg
(based on conguration)
Overpressure Relief Valve
Stainless Steel with Following Rating Options:
200 psi / 14.0 bar
550 psi / 38.0 bar
870 psi / 60.0 bar
Electrical Protection
Explosion proof
Class I, Division 1 and 2 - Groups B, C, D
Class I, Zone 1 and 2 - Groups IIB + H2, IIA
Mechanical Connections
Odorant Inlet and Discharge
1/4 in. / 6.4 mm OD Tube tting (double ferrule)
Gas Inlet and Discharge
3/8 in. / 9.5 mm OD Tube tting (single ferrule)
Maximum Working Pressure
Supply: 1450 psi / 100 bar
Injection: 870 psi / 60.0 bar
Odorant Flow Rate
0.13 to 3.70 gal/hr / 0.5 to 14.0 l/hr
(0.89 to 24.97 lbs/hr at 6.75 lbs/gal)
Temperature Range
14 to 140°F / -10 to 60°C
Odorant Calibration Cylinder:
Body Material
304 Stainless steel
Maximum Working Pressure
870 psi / 60.0 bar
Maximum Emergency Design Pressure
1450 psi / 100 bar
Solenoid Valves:
Body Material
304 Stainless steel
Gasket Material
Fluorocarbon (FKM)
Valve Operation
Electromagnetic
Maximum Working Pressure
870 psi / 60.0 bar
Power Requirements
12 Vdc
Electrical Protection
Explosion proof
Class I, Division 1 - Groups A, B, C, D
Stabilizer Filter Type SA/2:
Body Material
Steel
Maximum Working Pressure
1450 psi / 100 bar
Gasket Material
Nitrile (NBR)
Type ROC809 Controller
The I/O modules used in the Type ROC809
controller are standard ROC800 Series modules
with no special equipment required
Barrier Specications
See Table 1
I/O Requirements
See Table 2
Type ROC809 Technical Specifications
Go to: http://www.emersonprocess.com/remote/
Recommended Odorant Filter Specification
50 µm (filter is included)
2
Type Dosaodor-D

Introduction
Type Dosaodor-D is a computerized odorant injection
system for natural gas using patented solenoid
injector technology that eliminates the need for
plunger pumps.
The solenoid injectors provide odorant injection
accuracy to be maintained over the entire ow range
of the system, approaching innite turn down.
Automatic calibration during operation adjusts for any
changes in mechanical components and also detects
failures for alarming. Report by exception alarming is
a congurable option.
The system can also be configured to use
redundant injectors and/or an emergency backup or
bypass absorption system.
Real time and historical data can be read locally or
remotely by a laptop computer using ROCLINK 800
conguration software or remotely using third party
SCADA products utilizing ROC or Modbus protocol.
ROCLINK 800 software is available for complete
conguration and operation of the system including:
• Display of real time and historical data
• Conguration of alarms
• Archival of historical data
Benets
• Uniform distribution of odorant due to frequent
smaller injections and enhanced absorption from
the wick insertion.
• High turndown ratio. For example, one specific
configuration would evenly distribute odorant at
flow rates from 2000 to 1,200,000 SCFH / 53.6 to
32,160 Nm3/h without mechanical adjustment.
• Automatic calibration of injection system during
normal operation ensuring consistent odorization.
• Environmentally friendly with no venting of gas or
odorant while operating.
• Extremely low maintenance cost.
• Variety of redundancy and backup options for
reliable odorization.
• User friendly configuration software.
• Standard and scalable hardware platform that
supports additional station I/O for AGA flow
calculations and PID control algorithms.
Operation
The Type Dosaodor-D odorant injection system
operates on the basic principle of a fixed differential
pressure and orifice used to measure a non-
compressible fluid.
Fixed differential pressure is maintained using double
cut regulation by fixed differential pressure regulators
(Type SA/2 regulators) which reference P2 and reduce
the inlet pressure of a regulating station to P2 + ∆P.
∆Pmin = 8.7 psi / 0.60 bar, ∆Pmax = 21.7 psi / 1.5 bar
(an alternate high-pressure source can be used). This
pressure loading of the odorant calibration cylinder
filled with odorant is used to inject liquid odorant into
the downstream pipeline through an on/off valve (the
fixed orifice1) with a known flow coefficient that is
controlled by the automated system. The objective of
the automated control system is to maintain an injection
rate specified by the user which is proportional to the
gas flow. Accuracy of injection is accomplished utilizing
relatively small injections which are automatically
resized over a wide range dependent upon variations
in the gas flow. This results in a turn down ratio for
the system that can exceed 500:1 (the addition of a
simple bypass system utilizing the odorant storage
tank can allow the turn down ratio to approach infinity).
An odorant calibration cylinder with a fixed volume is
utilized to recalibrate the injection valve flow coefficient
each time the odorant calibration cylinder is refilled.
During the refill cycle the pressure used for injection is
relieved into the downstream pipeline which eliminates
venting of gas to atmosphere or an expansion tank.
Liquid odorant refill of the odorant calibration cylinder
is typically accomplished by using all or some part of
the P2 + ∆P pressure to load the odorant storage tank
thus pushing the liquid out of the tank and into the
odorant calibration cylinder, ∆P = 8.7 to 21.7 psi /
0.60 to 1.5 bar.
Since the unit uses only pressure for injection there
are few moving parts in the system resulting in very
little maintenance. Relatively low cost options for both
automated and emergency redundancy for odorization
are also available.
The gas flow rate is obtained through either a
corrected gas volume pulse input or an instantaneous
flow rate analog input (4 to 20 mA) signal. The gas
1. Although the valve orice is xed for a specic application the valve can be adjusted manually to accommodate ow rates as small as 2 MSCFH to over 33,000 MSCFH with one injector.
3
Type Dosaodor-D

flow rate can also be configured manually to a fixed
value. Odorant injection rate is then calculated using
accumulated flow in order to reduce variability.
In cases where the station does not have a flow
computer, the Type ROC809 can be connected
directly to a pulse output from the turbine or an
analog output from a differential pressure transmitter
(Rosemount Types 3051 and 3095, etc.).
Variability between the calculated and actual injection
volume is used to automatically adjust injection
parameters for any changes in the system and
to detect alarm conditions or system failure, the
odorant calibration cylinder is used to monitor the
actual use of odorant. In the event of power failure,
configuration information and archived historical data
are maintained.
Type Dosaodor-D is designed to purge the odorant
back into the tank in the event that mechanical
maintenance is required. Odorant is pushed back
into the tank and gas is purged through the system to
absorb any remaining liquid.
General Safety Rules
Only qualified personnel shall install and operate the
odorizing system.
Odorizing systems should be installed, operated
and maintained in accordance with international and
applicable codes and regulations.
Installation, operation and maintenance procedures
performed by unqualified personnel may result in
unsafe operation.
This condition may result in equipment damage or
personal, environment injury. If a leak develops in
the system, the escaping gas may accumulate and
become a fire or explosion hazard. Immediately call
qualified service personnel in case of trouble.
The service engineers (operators and maintenance
workers of odorizing systems) shall comply, in any
case, with the following rules:
1. Always wear safety clothing to prevent the product
from coming in contact with the skin, eyes or to
prevent it from being inhaled;
2. In case of leaks or liquid spillage, be prepared to
neutralize or contain the liquid.
Site Requirements
Careful consideration when locating the ROC809 on
the site can help reduce future operational problems.
Consider the following items when choosing a location:
• Local, state and federal codes often place
restrictions on locations and dictate site
requirements. Examples of these restrictions are:
the amount of distance from a meter run, distance
from pipe anges and hazardous area classications.
Ensure that all code requirements are met.
• Choose a location for the ROC that minimizes the
length of signal and power wiring.
• The ROC809 is equipped for radio communications
should be located so the antenna has an
unobstructed signal path. Antennas should not
be aimed into storage tanks, buildings or other tall
structures. If possible, antennas should be located
at the highest point on the site. Overhead clearance
should be sufcient to allow the antenna to be raised to
a height of at least 20 ft / 6 m.
• To minimize interference with radio communications,
choose a location for the ROC away from
electrical noise sources, such as engines, large
electric motors and utility line transformers.
• Choose a location for the ROC away from heavy
tra󰀩c areas to reduce the risk of being damaged
by vehicles. However, provide adequate vehicle
access to aid monitoring and maintenance.
• The site must comply with class limits of Part 15
of the FCC rules. Operation is subject to the following
two conditions: (1) The device may not cause harmful
interference and (2) the device must accept any
interference received, including interference that may
cause undesired operation.
Compliance with Hazardous Area Standards
The ROC hazardous location approval is for Class I,
Division 2, Groups A, B, C and D. The Class, Division and
Group terms include:
1. Class denes the general nature of the hazardous
material in the surrounding atmosphere. Class I is for
locations where ammable gases or vapors may be
present in the air in quantities sufcient to produce
explosive or ignitable mixtures.
4
Type Dosaodor-D

Figure 4. General Installation Schematic
REGULATING STATION
ODORANT
TANK
P1 P2
LIQUID
INJECTION POINT
PNEUMATIC PANEL
SIGNALS FROM
FLOW COMPUTER
HAZARDOUS AREA SAFE AREA
TYPE ROC809
2. Division denes the probability of hazardous
material being present in an ignitable concentration
in the surrounding atmosphere. Division 2 locations
are locations that are presumed to be hazardous
only in an abnormal situation.
3. Group denes the hazardous material in the
surrounding atmosphere. Groups A to D are
as follows:
• Group A – Atmosphere containing acetylene.
• Group B – Atmosphere containing hydrogen,
gases or vapors of equivalent nature.
• Group C – Atmosphere containing ethylene,
gases or vapors of equivalent nature.
• Group D – Atmosphere containing propane,
gases or vapors of equivalent nature.
For the ROC809 to be approved for hazardous
locations, it must be installed in accordance with
the National Electrical Code (NEC) guidelines or
other applicable codes.
NOTICE
Refer to the ROC809 User Manual for
installation. Incorrect installation in a
hazardous area could result in personal
injury or property damage.
Generally, control unit installation in
hazardous area is not recommended.
I. S. BARRIER PARAMETERS MUST BE LEVEL SWITCH + CABLE PARAMETERS
1 Co ≥ Ci + Cc
2 Lo ≥ Li + Lc
3
Alternative to previous one
Lo/Ro ≥ Lc/Rc
Table 1. Barrier Specications
KEY 40 - ODORANT FILTER
5
Type Dosaodor-D

Figure 5. Automated Pressure Balancing System with Bypass Schematic
*SUPPLIED BY SYSTEM INTEGRATOR
l
REGULATING STATION
ODORANT
TANK
P1 P2H
SIGNALS FROM
FLOW COMPUTER
TYPE ROC809
P2L P2
SOLENOID VALVE SOLENOID VALVE
PNEUMATIC PANEL
HAZARDOUS AREA SAFE AREA
CAUTION
When working on units located in a
hazardous area (where explosive gases
may be present), make sure the area is in
a non-hazardous state before performing
procedures. Performing procedures in a
hazardous area could result in personal
injury or property damage.
Best Practices for Installation
1. Install a sight/drip glass to monitor odorant
injection. If the odorant storage tank is large, a
bypass is recommended to reduce the time it
takes to pressurize the tank.
2. Before installing the pneumatic panel, verify
oat activation of magnetic switches in odorant
calibration cylinder. Use an Ohm meter and
validate that when the panel is upright and
the oat is at the bottom one set of wires has
conductivity (brown). Then tip the panel upside
down which will cause the oat to slide up the
stem to the high level magnetic switch and the
second magnetic switch wire should then have
conductivity (green).
3. Get and read the Type Dosaodor-D Software for
Conguration of Type Dosaodor-D Odorant Injection
System Manual (D103117X012). Get the
information that is printed on the panel for odorant
calibration cylinder capacity (CONTROL DEVICE
VOLUME) and injector valve ow coefcients
(SPECIFIC VOLUME INJECTOR N° X). Get the
three values related to the used odorant: specic
gravity (normally about 0.6); specic weight
(normally about 6.75 lbs/gal) and nally the initial
injection rate (normally in the 0.5 to 1.0 lb of odorant
per million cubic feet of gas range).
KEY 40 - ODORANT FILTER
6
Type Dosaodor-D

Figure 6. Connections for Pneumatic Panel
ODORANT LINE
TO PIPELINE,
1/4 IN. OD TUBE
P2(STATION OUTLET)
PRESSURE LINE,
3/8 IN. OD TUBE
P1(STATION INLET)
PRESSURE LINE
3/8 IN. OD TUBE
ODORANT LINE
FROM TANK,
1/4 IN. OD TUBE
ODORANT LINE
TO PIPELINE,
1/4 IN. OD TUBE
P2(STATION OUTLET)
PRESSURE LINE,
3/8 IN. OD TUBE
P1(STATION INLET)
PRESSURE LINE,
3/8 IN. OD TUBE
ODORANT LINE
FROM TANK
1/4 IN. OD TUBE
1
2
12
3
1 2
PNEUMATIC PANEL B1 VERSION PNEUMATIC PANEL B2 VERSION
1
2
1
2
1
2
3
1 2
1 2 3 PRINTED ON SOLENOID VALVE
M
M
V
V
R
R
M
M
V
V
R
R
4. Install quarter turn hand valves at each end of
tubing runs for easy isolation during troubleshooting
or repairs.
5. Install “Pete’s Plugs” so that a pressure gauge can
be placed into different parts of the system (e.g.
storage tank pressure, pressure at point of pipeline
injection; pipeline or supply pressure to Type SA/2)
for troubleshooting.
6. If odorant storage tank is kept at P2 + ∆P pressure
then a ow control valve must be installed in the
liquid line to control rell time. Swagelok ow
control (metering) valves are recommended: M
and 31 Series. Suggested rell time: 45 seconds
minimum to 120 seconds. However, if the storage
tank oats with the pipeline by using added
solenoid valves, then this valve is not needed.
7. As above, rell of the odorant calibration cylinder
should take at least 45 seconds to a couple
minutes. Considering this value, assume that
odorant is already at the low level of the odorant
calibration cylinder (you have not purged the
odorant back into the tank or are not just starting
up the system and need to ll all the tubing coming
to the odorant calibration cylinder).
8. Type ROC809 digital output modules (DOs) do not
drive the solenoids directly; wires are used to power
the supply (see Figure 8).
9. Get a cross over ethernet cable to connect directly
from a PC to the Type ROC809 ethernet port.
See Type Dosaodor-D Software for Conguration
of Type Dosaodor-D Odorant Injection System
Manual (D103117X012).
7
Type Dosaodor-D

SLOT REQUIREMENT DESCRIPTION POINT DESCRIPTION (SPECIFICATION
SHEET)
1 Optional Communication Card Not Applicable 6.3:COM
2 Optional Communication Card Not Applicable 6.3:COM
3 Optional Communication Card Not Applicable 6.3:COM
4Choose according
to Flow Rate input Pulse Inputs Channel 1: Flow Input from computer or pulse meter 6.3:PI
Channel 2: Spare
5Choose according
to Flow Rate input Analog Inputs
Channel 1: Flow Input from computer
6.3:AI
Channel 2: Supply tank level input
Channel 3: Spare
Channel 4: Spare
6 Required Discrete Inputs
Channel 1: Odorant calibration cylinder high level
6.3:DI
Channel 2: Odorant calibration cylinder low level
Channel 3: Gas ow computer alarm(2)
Channel 4: Spare
Channel 5: Spare
Channel 6: Spare
Channel 7: Spare
Channel 8: Spare
7 Optional Analog Outputs
Channel 1: Instantaneous Odorant Concentration
6.3:AO
Channel 2: Average Odorant Concentration for Current Day
Channel 3: Spare
Channel 4: Spare
8 Required Discrete Relay Outputs
Channel 1: Injector #1 solenoid
6.3:IOM3
Channel 2: Injector #2 solenoid
Channel 3:Odorant calibration cylinder pressure solenoid/Tank
pressure solenoid
Channel 4: Odorant calibration cylinder rell control solenoid
Channel 5: System is ofine
9 Required Discrete Relay Outputs
Channel 1: Alarm Output
6.3:IOM3
Channel 2: Low odorant supply tank level
Channel 3: Gas volume output pulse
Channel 4: Odorant volume output pulse
Channel 5: Spare
1. Each module must be inserted in the assigned slot.
2. This point should be manually recongured if it is not connected to an external ow computer see Dosaodor User Manual (D103117X012), Alarm Output
Contact Selection, Flow Computer.
Table 2. I/O Requirements(1)
10. For the low ow conditions, set the odorizer
control program scan time to 20 seconds (default
is 2 seconds) to improve current value read
out for ow. See Type Dosaodor-D Software
for Conguration of Type Dosaodor-D Odorant
Injection System Manual (D103117X012).
11. Review conguration of system, set alarm and
other parameters while mechanical installation is
in progress (including odorant calibration cylinder
volume and initial injector valve ow coefcient(s)).
See Type Dosaodor-D Software for Conguration
of Type Dosaodor-D Odorant Injection System
Manual (D103117X012).
12. Spend time training on the operation, conguration
and troubleshooting tools for the system.
13. After landing all control wiring and before loading
the system with pressure, activate each digital
output to verify correct wiring and operation
of solenoids.
14. In an orderly manner pressurize the system with
nitrogen (IF USED) from the high pressure supply
and for reference to the pipeline pressure.
15. Check tubing and ttings for any leakage.
8
Type Dosaodor-D

16. Open liquid odorant ll tubing valve to odorant
calibration cylinder and check for leaks.
17. Do a manual rell of the odorant calibration
cylinder; check for any leaks in tubing and ttings
and correct operation of magnetic switches.
18. Do a purge of the odorant calibration cylinder (for
training and correct operation of components).
19. Rell odorant calibration cylinder.
20. Set operation mode to Manual and set ow rate
to high level (50,000 MCFH to 75,000 MCFH)
in order to push odorant through the injection
solenoids and remaining tubing down to
the pipeline.
21. Once odorant appears in sight glass, place
system in Automatic mode and continue setting up
conguration parameters.
22. Observe rst rell of odorant calibration cylinder
and recalculation of injector ow coefcient.
23. After a period of operation and allowing several
odorant calibration cylinder rells, analyze actual
injection rate against target. To conrm everything is
working correctly locate a calibration rell (at the top
of the hour) in the event log. Next, nd where there
was another rell at the top of another hour, this
may be several hours or even days later. Count the
number of rells that occurred during that time. The
volume of the odorant calibration cylinder tells you
how much odorant was measured into the pipeline
during that time. Referring to the computer, you can
add up the gas ow during that same period since
AGA calculations are summarized for each hour at
the top of the hour. Now you can divide the volume
of odorant you calculated by the gas ow volume for
the same period and verify the injection rate.
Injection System Conguration Schemes
The Type DOSAODOR-D product works using the
differential pressure that is present in regulating
station. For non-differential applications (no regulating
stations involved) please refer to appropriate solutions
and related documentation.
Installation schematic depends on the application and
needs of the customer. In the following pages, good
practices and best practices will be described.
Just to give an idea about different congurations and
installation options (see Figures 4 and 5), the following
are the most common:
1. Additional odorant ow control valve may be used
on odorant liquid line when odorant storage tank
is maintained at P2 + ∆P. ∆P = 8.7 to 21.7 psi /
0.60 to 1.5 bar. CV for built-in control valve
(position 23, Figures 12, 13): CV= 0.11. Odorant
calibration cylinder rell time should be contained
in the 45 to 120 seconds. If these constraints
cannot be satised tuning the built-in ow control
valve, an additional ow control valve must be
used according to working conditions, to obtain
the required rell time. Swagelok ow control
(metering) valves are recommended: M and
31 Series.
2. Optional 3-way valve for pressurizing odorant
storage tank to P2 + ∆P. ∆P = 8.7 to 21.7 psi / 0.60
to 1.5 bar when tank is maintained at P2. When
the 3-way valve is not energized then the storage
tank is maintained at (oats with) P2. When it is
energized for a liquid rell of the odorant calibration
cylinder then the pressure begins going up towards
P2 + ∆P bar until the rell is completed.
3. Optional 3-way valve for maintaining odorant
storage tank at P2. This is commonly used with
option 2. Refer to Figure 5.
4. Option for odorant storage tank relief to P2. If
P2 pressure (refer to Figures 4 and 5) is highly
variable or there is excess buildup of pressure
in the storage tank due to temperature changes
and at the same option 2 is not used, then a
simple pressure relief valve may be needed to
relieve excess pressure from the storage tank into
P2 stream.
5. Option for odorant calibration cylinder relief to P2.
If the pressures in P2 are highly variable, like what
may occur in a straight line pipe with no regulator
station, then the pressure in the odorant calibration
cylinder may be raised to a value that is too high
for the system to work properly during operations.
To resolve this issue a relief valve may be installed
across the 3-way valve on the pneumatic panel, to
vent excess pressure from the odorant calibration
cylinder into the downstream pipeline.
6. Options for utilizing odorant storage tank as a
bypass or absorption system. This functionality may
be activated by the Type Dosaodor-D system when
disabled or in fault.
9
Type Dosaodor-D

Most frequent combinations.
A. 1 and 6 with 4 and/or 5
B. 2 and 3 with 6
C. 4 and/or 5 with 6
D. 2 and 3 should be used together
Pneumatic Panel Installation
Pneumatic Panel should be installed in the immediate
vicinity of the odorant pick-up point (absorption-type tank
or other type of tank).
All of the panel components are resistant to chemical
attack from all of the odorizing liquids, to the elements
and to those conditions specied in regulations
regarding safety and electrical equipment.
It is essential that the distance between the panel and
the injection location be as short as possible, as a
short route limits the quantity of odorant subjected to
pressure and thus reduces the chances of leakage of
liquid occurring.
The pneumatic panel (Figure 3) is intended to be
wall mounted. Two spacing brackets are part of the
standard equipment supplied with the panel. The
standard equipment contains two brackets, standard or
extended injection wick, odorant lter and screws.
Four openings are provided for pipe connections and
they are located at the end points of the support panel.
The positions and sizes of the openings can be easily
identied from Figure 6.
Pneumatic Lines and Connections
The pneumatic connections between the
Type Dosaodor-D panel, the gas line and the odorant
tank should be carried out using stainless steel piping
only. Refer to Figure 6 for pipe sizes.
CAUTION
The pipeline connecting the
Type Dosaodor-D panel with the
odorant tank should be congured to
avoid the creation of possible air/gas
pockets (obstacles to the odorant ow).
Piping should be installed as straight as possible, with
a constant grade and without any sequences of upward
and downward inclines.
Polytetrauoroethylene (PTFE) tape or thread sealer
should be used on all pipe ttings to prevent
odorant leakage.
Type ROC809 Controller Installation
Planning is essential to a good installation. Because
installation requirements depend on many factors,
such as the application, location, ground conditions,
climate and accessibility, this document only provides
generalized guidelines.
!
WARNING
Failure to follow the following installation
requirements could result in equipment
malfunction and loss of odorant
injection. Loss of odorant in the natural
gas supply could result in personal
injury and property damage from
undetected leaking natural gas.
Level Float and Switch Wiring
Type ROC809 must not receive the signals directly
from the odorant calibration cylinder (low and high
level). For safety reasons a barrier must be installed.
Barriecications
Verify connection cable and eld device capacitance
and inductance do not exceed the limits given for the
Intrinsically Safe barrier.
Level Switch Safe Parameters:
Ci (Equivalent input capacitance) = 20pF
Li (Equivalent input inductance) = 4μH
If the results are negative, condition 3 prevails on 2, since
cable resistance reduces circuit current (consequently
reducing the stored electrokinetic energy).
Cable parameters:
Cc (Equivalent input capacitance)
Lc (Equivalent input inductance)
Rc (Equivalent input resistance)
Environmental Requirements
NOTICE
The ROC809 requires protection
from direct exposure to rain, snow,
ice, blowing dust or debris and
corrosive atmospheres.
10
Type Dosaodor-D

In salt spray environments, it is
especially important to ensure that the
enclosure is sealed properly, including
all entry and exit points.
• Always install the ROC809 in a user-
supplied enclosure.
• If the ROC809 is installed outside
a building, it must be placed in a
National Electrical Manufacturer’s
Association (NEMA) 3 or higher rated
enclosure to ensure the necessary
level of protection.
• The ROC809 operates over a
wide range of temperatures.
In extreme climates it may be
necessary to provide temperature-
controlling devices to maintain
stableoperating conditions.
• In extremely hot climates, a ltered
ventilation system or air conditioning
may be required.
• In extremely cold climates, it may be
necessary to provide a thermostatically
controlled heater in the sameenclosure
as the ROC809.
• To maintain a non-condensing
atmosphere inside the ROC809
enclosure in areas of high humidity,
it may be necessary to add heat
or dehumidication.
I/O Conguration
Several options are available on the Type ROC809
controller. Outputs may be added to interface
with external devices such as systems for remote
data transmission, remote monitoring and remote
surveillance. Table 2 lists the minimal requirements.
NOTICE
Each module must be inserted in the
assigned slot as shown in Table 2.
Further conguration information is provided in the
Type Dosaodor-D Software for Conguration
of Type Dosaodor-D Odorant Injection System
Manual (D103117X012).
Refer to the ROC809 Remote Operations Controller
Instruction Manual (Form A6116).
Electrical Connections Schematics
The electrical connections between the enclosure and
pneumatic panel should be completed according to
Figures 7 and 8.
Preliminary Checks
Before turning on the electronic control unit:
1. Gas Volume/Gas Delivery signal type must be set
to one of the following input signals:
• Pulse input
• Analog input
• Internal Orice
• Internal Turbine
2. Check all of the electrical and pneumatic
connections for proper conformity throughout the
entire system, using the diagrams and drawings
supplied by the system integrator.
3. Make sure that all of the valves for connection
between the pneumatic panel and remaining part
of the station are leak free. Turn on the electronic
control unit.
Control Unit Power-On and
Parameters Set-Up
After all of the checks in the preceding section and
suggested by the system integrator have been carried
out, turn on the system, set it in Disable mode and
congure parameters as described in:
“Procedure and Compilation of Work Parameters”
chapter of Type Dosaodor-D Software for
Conguration of Type Dosaodor-D Odorant
Injection System Manual (D103117X012).
Programmed and Displayed Data
Please refer to Type Dosaodor-D Software for
Conguration of Type Dosaodor-D Odorant Injection
System Manual (D103117X012).
11
Type Dosaodor-D

TYPE DOSAODOR-D B1 VERSION TYPE DOSAODOR-D B2 VERSION
Figure 7. Electrical Connections Schematics
A -->5
B -->6
2
3
4
5
61
A -->1
B -->2
A -->3
B -->4
ROC809
Hazardous area
Safe area
Pneumatic Panel
Injector 1
solenoid valve
Junction
box 2
Junction
box 1
I.S.
Barrier
-
+
-
+
-
+
Remote operations
controller enclosure
Brown
Low
White
Green
High
Odorant calibration
cylinder refill
solenoid valve
Odorant
calibration cylinder
solenoid valve
A -->5
B -->6
2
3
4
5
61
A -->1
B -->2
A -->3
B -->4
78
A -->7
B -->8
Hazardous area
Safe area
Brown
Low
White
Green
High
ROC809
Pneumatic Panel
Injector 1
solenoid valve
Injector 2
solenoid valve
Junction
box 2
Junction
box 1
I.S.
Barrier
Remote operations
controller enclosure
-
+
-
+
-
+
-
+
Odorant calibration
cylinder control
solenoid valve
Odorant calibration
cylinder pressure
solenoid valve
12
Type Dosaodor-D

CPU
ETHERNET
R OC809
LE D
RS-232D
LO IST AT US
KEY S
LICENSE
RESET
#1
#2
ETHERNET
RXTXCO L
LN K
RS-232
RXTXRT S
DTR
GND
+
+
-
-
-
-
+
+
+
-
CH1
CH2
CH3
CH4
CH
Y
DO
RELA
5CHAN
5
COM
6
8
7
4
5
3
2
1
DI
8CHAN
Green - Low
Brown-High
Com.
+12 V
Ethernet cable
5
-
6
7
-
8
3
-
4
3
-
-
-
-
-
4
+
+
+
+
12 V
12 V
12 V
12 V
Injector 1
solenoid valve
Injector 2
solenoid valve
Cylinder/tank
pressure solenoid
Cylinder refil
control solenoid
ETHERNET CABLE
ETHERNET CONNECTION
CPU
ETHERNET
R OC809
LE D
RS-232D
LO IST AT US
KEY S
LICENSE
RESET
#1
#2
ETHERNET
RXTXCO L
LN K
RS-232
RXTXRT S
DTR
GND
+
+
-
-
-
-
+
+
+
-
CH1
CH2
CH3
CH4
CH
Y
DO
RELA
5CHAN
5
COM
6
8
7
4
5
3
2
1
DI
8CHAN
Green - Low
Brown-High
Com.
+12 V
Ethernet cable
5
-
6
7
-
8
3
-
4
3
-
-
-
-
-
4
+
+
+
+
12 V
12 V
12 V
12 V
Injector 1
solenoid valve
Injector 2
solenoid valve
Cylinder/tank
pressure solenoid
Cylinder refil
control solenoid
+12 V
COM.
SUPPLY VOLTAGE CONNECTIONS
Figure 8. Type ROC809 Electrical Connections
GREEN - HIGH
BROWN - LOW
LEVEL SWITCH CONNECTIONS
REFER TO TYPE DOSAODOR-D SCHEMATICS
ON PAGE 12 JUNCTION BOX 1
COM
6
8
7
4
5
3
2
1
DI
8CHAN
CPU
ETHERNET
R OC809
LE D
RS-232D
LO IST AT US
KEY S
LICENSE
RESET
#1
#2
ETHERNET
RXTXCO L
LN K
RS-232
RXTXRT S
DTR
GND
+
+
-
-
-
-
+
+
+
-
CH1
CH2
CH3
CH4
CH
Y
DO
RELA
5CHAN
5
COM
6
8
7
4
5
3
2
1
DI
8CHAN
Green - Low
Brown-High
Com.
+12 V
Ethernet cable
5
-
6
7
-
8
3
-
4
3
-
-
-
-
-
4
+
+
+
+
12 V
12 V
12 V
12 V
Injector 1
solenoid valve
Injector 2
solenoid valve
Cylinder/tank
pressure solenoid
Cylinder refil
control solenoid
6
INJECTOR 1
SOLENOID VALVE
INJECTOR 2
SOLENOID VALVE
ODORANT
CALIBRATION
CYLINDER/TANK
PRESSURE
SOLENOID
ODORANT
CALIBRATION
CYLINDER REFILL
CONTROL
SOLENOID
5
12 Vdc SUPPLY
8 7
4 3
2 1
SOLENOID VALVES CONNECTIONS
REFER TO TYPE DOSAODOR-D SCHEMATICS ON PAGE 12 JUNCTION BOX 2.
EXTERNAL POWER SUPPLY IS NEEDED.
6
4
5
3
2
1
12
10
11
9
8
7
15
14
13
3
2
1
ON
OFF
OFF
2
1
Com
Com
+T
HAZARDOUS
AREA
I.S. BARRIER SAMPLE
CHECK PARAMETERS ACCORDING TO I.S.
BARRIER PARAMETER TABLE
KFD2 - SR2 - EX2. W (PEPPERL AND FUCHS)
SAFE AREA
DISCRETE INPUT CARD
INPUT 1 - HIGH LEVEL
INPUT 2 - LOW LEVEL
PULSE INPUT CARD*
USE TO PROVIDE
POWER FOR THE
BARRIER JUMPER SET
FOR 24 VDC
ODORANT
CALIBRATION
CYLINDER HIGH
CONTACT
(GREEN WIRE)
ODORANT
CALIBRATION
CYLINDER LOW
CONTACT
(BROWN WIRE)
*ALTERNATIVE POWER FOR THE BARRIER: ANALOG INPUT BOARD (AI - 12).
BARRIER
12 Vdc SUPPLY
12 Vdc SUPPLY
12 Vdc SUPPLY
13
Type Dosaodor-D

NOTICE
The factory tuning procedure of the
injection solenoid valve is conducted with
a specic gravity value of 1.
The value entered in the elds “Entered
Volume For Injector 1 (lbs/sec), Entered
Volume For Injector 2 (lbs/sec) must be
calculated. Multiply the specic gravity of
the odorant to be injected (typical values
range between 0.5 and 1.0) by the value
found on the nameplate of the pneumatic
panel titled: Specic volume injector N°1.
For example, with an odorant specic
gravity of 0.6 and the specic volume of
injector 1 being 0.0132 lb/s, the entered
value would be:
0.6 * 0.0132 = 0.00792 (entered value)
If the Entered Volume for Injector 1
changes more or less than the 10% of
the label value, the calibration procedure
is required. See section labelled
“Injection Valve Calibration.”
Startup and Testing
Additional Materials Required
In order to proceed with system startup, you should
have at least 0.14 gal. of liquid capable of neutralizing
the effect of the odorant used.
The most frequently used liquid is a mixture of sodium
hypochlorite (bleach) with denatured alcohol and a
small amount of “fragranced” liquid soap.
Preliminary Operation and Leakage Test
Before starting-up the system according to the best
practice, it’s strongly recommended for safety reasons
to check that all of the pneumatic connections have
been carried out properly and that the whole system
(pipes, pipe connections and equipment) are pressure
tight and leak free.
In case of effective National regulations, above
recommendation shall be mandatory.
Proceed as follows using Figures 4 and 5 as reference:
• Close the odorant input valve found at the base of the
pickup tank. The use of this valve is strongly suggested
for every installation.
• Open the two gas on/off valves found on the main line
(upstream station, downstream regulators).
• Using a suitable spray, check for any gas leaks (check
ALL ttings).
• Proceed by switching on the Type ROC809, setting the
system in Disable mode.
• Check the line section connecting the pneumatic panel
with the odorant tank, including odorant lter for any
gas leaks.
If no leaks are detected, prime the entire system.
Priming the Pneumatic Panel
• Open the 4 on/off gas valves found on the main line
(Upstream lters, Downstream regulators, Odorant
injection, High-pressure gas supply to the panel).
• Open the two on/off odorant valves found on the
pneumatic panel.
• Open the on/off odorant valve found at the base of
the odorant storage tank.
• Switch on the Type ROC809 control unit.
• Check the programmed data for accuracy.
• Eliminate any alarms present.
• Start the Wash cycle as described in
Type Dosaodor-D Software for Conguration
of Type Dosaodor-D Odorant Injection
System (D103117X012).
Stop the wash cycle after an interval of time that is
sufcient to drain the section of the line joining the
pneumatic panel with the injection point: Approximately
12 seconds for each meter of pipeline installed
(DN 6 x 4 mm).
Once the priming/drainage phase is completed, the
system is ready for operation. Make sure that the ow
computer is transmitting the gas volumes correctly
(Using ROCLINK 800 Software).
Set to zero all of the internal counters (look at
Type Dosaodor-D Software for Conguration of
Type Dosaodor-D Odorant Injection System
manual (D103117X012)).
Set the system in Auto mode.
The system will start dosing the odorant proportionally
to the ow rate of the gas in transit.
14
Type Dosaodor-D

• Cut-off power supply to the electronic control unit.
• Depressurized the pneumatic panel by loosening
the joint located in the upper left part of the control
odorant calibration cylinder.
Recommended Parts Replacement
• Replace all rubber parts inside the two pressure lter-
regulators model Type SA/2.
• Replace the lter cartridge located inside the
lter housing.
Restart the system, following the instructions described in
“Startup and Testing” section.
Extraordinary Maintenance:
It shall be carried out in case the system stops
injecting the necessary odorant quantity. Alarm
messages may highlight this condition. Please refer to
troubleshooting section.
Professionally trained staff is required to perform
maintenance operations.
Operators shall perform mechanical/pneumatic
interventions and be well informed on all instructions
related to safety operations, that have to be met during
any intervention on systems managing ammable and/or
odorizing liquids.
Injection Valve Calibration
NOTICE
In some cases, the Injection valve
may need calibration. This may be
needed when:
1. Injector alarms take place frequently.
2. The injection solenoid valve is
replaced with a new one that has not
been calibrated.
3. During startup, if the injection
solenoid valve calibration is not
adequate to the working conditions
(frequent injector alarms may
take place).
4. The Entered Volume for the injector
changes more or less than 10% of
the label value.
Maintenance and Operation
Injection Valve Tuning
Procedures and Recommended
Timing for Routine/Extraordinary
Maintenance Operations
The Type Dosaodor-D system that you have
purchased has been manufactured with state-of-the-
art technology and materials currently available.
Type Dosaodor-D odorizing system and its
accessories are subjected to normal wear/aging and
must be inspected periodically.
The frequency of inspection/checks and replacement
depends upon the severity of service conditions and
upon applicable National or Industry codes, standards
and regulations/recommendations.
Maintenance may be accomplished following proper
procedures that are detailed in the Instruction Manual.
Routine Maintenance:
For routine maintenance operations, refer to the parts
list and appropriate assembly drawings. It includes all
spare parts that may need to be replaced in the system
enabling the system to comply with the functional
specication it was originally designed.
System Shutdown
!
WARNING
To avoid personal injury or property
damage from sudden release of
pressure, isolate the equipment from
the pressure system and release all
pressure from the connections before
performing maintenance operations.
These are the operations to be carried out:
• Purge/Wash cycle by means of Natural Gas (follow
the procedure on page 18).
• After completing the Purge/Wash Cycle, close all
valves on the pneumatic panel.
• Close the needle valve located on the pipe detecting
the odorizing pressure (low pressure branch).
• Close the odorant outlet valve located on the tank
from which the odorant is picked up.
15
Type Dosaodor-D

Before starting the calibration
procedure, the system must be
correctly installed and tested. Refer
to Type Dosaodor-D Software for
Conguration of Type Dosaodor-D
Odorant Injection System Manual
(D103117X012) for following
programming steps.
CAUTION
During the calibration procedure gas
overodorization or underodorization
may take place.
To avoid this, the calibration process
might be accomplished “o󰀨-line”
using simulation devices (Plastic tank
containing anti-freezing liquid). Please
contact your local Sales O󰀩ce in case
o󰀨-line calibration is mandatory.
Put the system in Disable mode.
Select the injector to be calibrated. See Screenshot 1.
Screenshot 1: Injection System
Enter following data:
a) Odorant Injection Concentration (depending on
the odorant type). See Screenshot 2.
b) Entered Specic Volume for the Injector that must
be calibrated. See Screenshot 2.
Choose data from Table 3a or 3b (according to odorant
ow rate) and multiply this value for the odorant
Specic Gravity.
Denition:
Odorant Specic Gravity = ρodorant/ρH2O =
ρodorant/8.32
ρodorant = Odorant Density [LBS/Gal]
ρH2O = 8.32 LBS/Gal
Examples:
ρSulfur base odorant = 8.345 LBS/Gal
ρMercaptan base odorant = 6.776 LBS/Gal
Screenshot 2: Injection Data Conguration
c) Odorant Weight (depending on odorant type).
See Screenshot 3.
d) Rated Odorant Calibration Cylinder Capacity (see
proper value on pneumatic panel nameplate).
See Screenshot 3.
Screenshot 3: Injection Data Conguration
e) Manual Mode Gas Flow Rate. See Screenshot 4.
Choose data from Table 3a or 3b; if Injection
Concentration is different from 2.48 LBS/MMCF /
40 mg/m3, then calculate the new value by the formula
below.
Screenshot 4: Operating Data Conguration
If required Injection Concentration is different from
2.48 LBS/MMCF / 40 mg/m3 then the Manual Mode
Gas Flow Rate value must be recalculated by the
following formula:
16
Type Dosaodor-D

English Imperial Units
Manual Mode Gas Flow Rate = (2.48 x Manual Mode
Gas Flow Rate (2.48))/ Injection Concentration
International Standard Units
Manual Mode Gas Flow Rate = (40 x Manual Mode
Gas Flow Rate (40))/ Injection Concentration
“Manual Mode Gas Flow Rate (2.48)” and “Manual
Mode Gas Flow Rate (40))” values are listed in the
third column of Tables 3a and 3b.
Example:
Injection Concentration = 0.62 LBS/MMCF
Odorant Flow Rate = 17.7 MCF/h
Manual Mode Gas Flow Rate =(2.48 x 9.531)/ 0.62
= 38.124 MCF/D
Position the metering device screw more or less open
depending on the odorant ow rate. In order to obtain
low odorant ow rate the orice must be nearly closed
and vice versa.
ODORANT FLOW RATE
(SEE PNEUMATIC PANEL NAMEPLATE) INJECTION CONCENTRATION MANUAL MODE GAS FLOW RATE SPECIFIC VOLUME FOR INJECTOR(1)
MCF/hLBS/MMCF MCF/D LBS/sec
17.7
2.48
9.531 0.00165
35.3 19.062 0.00330
70.6 38.124 0.00660
141.3 76.248 0.01320
211.9 114.372 0.01980
282.5 152.496 0.02640
353.1 190.620 0.03300
423.8 228.744 0.03960
494.4 266.868 0.04620
1. The specic volume entered for injector must be calculated. Multiply the specic gravity of the odorant to be injected (typical values range between 0.5 and 1.0) by the value that may be
found on the nameplate of the pneumatic panel titled: Specic volume injector N°1. These values are listed in right column of above table. Example, with an odorant specic gravity of
0.6 and the specic volume of injector 1 being 0.0132 lbs/sec, the entered value would be: 0.6 * 0.0132 = 0.00792 (entered value).
ODORANT FLOW RATE
(SEE PNEUMATIC PANEL NAMEPLATE) INJECTION CONCENTRATION MANUAL MODE GAS FLOW RATE SPECIFIC VOLUME FOR INJECTOR(1)
l/h mg/m3Stm3/D g/s
0.5
40
270,000 0.75
1 540,000 1,5
2 1,080,000 3
4 2,160,000 6
6 3,240,000 9
8 4,320,000 12
10 5,400,000 15
12 6,480,000 18
14 7,560,000 21
1. The specic volume entered for injector must be calculated. Multiply the specic gravity of the odorant to be injected (typical values range between 0.5 and 1.0) by the value that may be
found on the nameplate of the pneumatic panel titled: Speci c volume injector N°1. These values are listed in right column of above table. Example, with an odorant specic gravity of
0.6 and the specic volume of injector 1 being 6 g/sec, the entered value would be:0.6 * 6 = 3.6 (entered value),
Table 3a. Imperial Parameters
Table 3b. International Standard Parameters
17
Type Dosaodor-D

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 Specic
Volume value related to the “in calibration” injector.
This value will change at every relling of the odorant
calibration cylinder. See Screenshot 5.
Screenshot 5: Current Injector Data
If Specic 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
orice 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 Specic 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 ow rate variation.
Wait at least two relling cycles before adjusting the
metering device. Have at least two similar (+/- 5%)
value readings before validate it. See “% From Last”
value in Screenshot 5.
Specic 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 ush.
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 Conguration of
Type Dosaodor-D Odorant Injection System
Manual (D103117X012)):
• Close the relling manual valve close to the odorant
calibration cylinder (look at Figure 6).
• Put the system in Rell and Disabled mode
sequentially several times (refer to Type Dosaodor-D
Software for Conguration 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 Conguration
of Type Dosaodor-D Odorant Injection System
Manual (D103117X012)).
• Open the relling manual valve close to the odorant
calibration cylinder (look at Figure 6).
• Start Odorant Recovery Cycle (refer to Dosaodor-D
Software for Conguration of Dosaodor-D Odorant
Injection System Manual (D103117X012)).
18
Type Dosaodor-D

Figure 10. Two Way Injection Solenoid Valve - MaintenanceFigure 9. Odorant Filter - Maintenance
7
40A 40B
40C
39G
39H
39H
39F
39F
39E
39D
39C
39B
39A
40D
40E
40F
40G
40H
40J
40K
123
LIQUID INLET
LIQUID OUTLET
• Stop Odorant Recovery Cycle after about 15
seconds (depending on the installation conditions)
and eventually repeat the procedure if needed.
• Select gas wash time.
• Run gas wash cycle.
• The cycle will be terminated when the Gas Wash
cycle time will expire.
• Put the system in disable mode and turn it off
before maintenance operations.
At this point all valves of the system have to be closed
and you can perform maintenance operations on the
involved parts.
After completing all operations, to restart the system
open the system valves, turn ON the odorizer, reset the
existing alarms and put the system in AUTO (MANUAL
or MINIMUM RATE).
Injection Solenoid Valve Cleaning with
Liquid Odorant (Injector Flush)
NOTICE
During the washing operation with
natural gas the control activates both
injectors at the same time (to increase
the drying process), during injector
ush just the selected injector is
activated. This allows the system to
increase the pressure for cleaning the
dirty injector and reduce potential over
odorization issues.
For injector selection, please refer
to Type Dosaodor-D Software for
Conguration of Type Dosaodor-D
Odorant Injection System
Manual (D103117X012).
19
Type Dosaodor-D

Figure 11. Type SA/2 Supply Filter
21
V
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19 20
1
AA
H
R
M
Sez.A-A
H
H
M
R
V
- Entrata/Uscita acqua
-Amonte delregolatore
Up
-Al raccordo di alimentazione
del pilota
-Avalle del regolatore
Water Inlet/Outlet
stream of the regulator
To the feeding of the pilot
Downstream of the regulator
LEGEND
H - NOT USED
M - STABILIZER INLET
R - STABILIZER OUTLET
V - PIPELINE REFERENCE PRESSURE
21
V
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19 20
1
AA
H
R
M
Sez.A-A
H
H
M
R
V
- Entrata/Uscita acqua
-Amonte delregolatore
Up
-Al raccordo di alimentazione
del pilota
-Avalle del regolatore
Water Inlet/Outlet
stream of the regulator
To the feeding of the pilot
Downstream of the regulator
Procedure:
• Put the system in Disable mode (refer to
Type Dosaodor-D Software for Conguration of
Type Dosaodor-D Odorant Injection System
Manual (D103117X012));
• Turn injector valve adjusting screw in (closed) counting
the number of turns to close the valve completely;
• Fully open the injector valve adjustment screw (there
are O-rings installed so the screw will not come out
and will not leak);
• Put the system in Purge/Wash mode (refer to
Type Dosaodor-D Software for Conguration of
Type Dosaodor-D Odorant Injection System
Manual (D103117X012));
• Start the injector Flush Cycle pushing start button
(refer to Type Dosaodor-D Software for Conguration
of Type Dosaodor-D Odorant Injection System
Manual (D103117X012));
• Repeat previous step (increasing “injector Flush Cycle
time if needed”) according to the needs. 1 second is
the suggested injector ush cycle time, 5 seconds is
the maximum allowed time;
• Put the system in Disable mode (refer to
Type Dosaodor-D Software for Conguration of
Type Dosaodor-D Odorant Injection System
Manual (D103117X012));
• Fully close the injector valve adjustment screw;
• Turn injector adjusting screw out (open) for the same
number of turns required to close the valve in the
rst step.
• Put the system in required Operation mode to
start injection.
Replacement of the Filtering Cartridge
(See Figure 9)
CAUTION
Before replacing the ltering cartridge
(key 6, Figure 9), all devices mounted on
the pneumatic panel have to drain out the
odorizing liquid they contain.
To do this, follow the instructions reported in paragraph
“Purge/Wash Cycle by Means of Natural Gas” section.
20
Type Dosaodor-D