Thermo Scientific FTIR User manual

Modular Gas System
USERGUIDE
269-346401B July 2022

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For Research Use Only. This instrument or accessory is not a medical device and is not
intended to be used for the prevention, diagnosis, treatment or cure of disease.
WARNING
Avoid an explosion or fire hazard. This instrument or accessory is
not designed for use in an explosive atmosphere.

Contents
Introduction 1
Using this document 3
Conventions used 4
Site requirements and safety information 5
Operating environment 6
Installation 11
Assemble the rack 12
Replace gas cell fittings 18
Mount the sample probe and particulate filter 20
Connect the Heated Valve Drawer and pressure control system 22
Connect the electrical wiring 30
Install the pressure transducer 32
Turn on the Heated Valve Drawer 34
Operation 35
Manual Pressure Control Configuration 36
Automatic Pressure Control Configuration 42
Using an eductor to generate vacuum 48
Using the temperature controllers 50
Sampling procedure for the Modular Gas System 52
Maintenance 57
Test for leaks 58
Replace the particulate filter 62
Replacing the rear filter 64
Replace water catch filters 67
Replace fuses 69

Clean the flowmeters 71
Clean the FTIR Heated Valve Drawer 72
Replaceable parts 73
Plumbing diagrams 75
Manual Pressure Control System 75
Automatic Pressure Control System 76
Eductor Panel 77

Introduction
The Thermo Scientific™ Modular Gas System includes the FTIR Heated Valve Drawer for convenient
gas selection and gas cell isolation. With the Heated Valve Drawer, you can monitor and control the
temperature, pressure, and flow rate of your gas sample from sample point through the heated gas
cell.
The Modular Gas System is intended to be used with non-flammable and non-oxidizing gases that
are compatible with PTFE, PFA, glass, and stainless steel.
Figure 1-1: The Automated Pressure configuration of the Heated Valve Drawer.
Chapter 1
ThermoScientific Modular Gas System User Guide 1

Introduction
The Modular Gas System includes an open 19” rack mounted system and is designed to be used with
the Thermo Scientific Antaris™ IGS analyzer, or the Nicolet™ iG™50, NicoletiS™50, NicoletiS10, or
NicoletiS20 spectrometers.
SYSTEM OPTIONS
The system accommodates a variety of configurations, including the following options:
lCompatible with Antaris IGS analyzer or a Nicolet spectrometer
lInstalls in a full or half height 19-inch standard rack or table mounted system
lSuitable for open or enclosed racks
The Heated Valve Drawer also supports a variety of configurations of valves, controls, and gas
fittings. This manual describes each of the components available, but your Heated Valve Drawer may
be configured differently to suit your site and sampling requirements.
For additional information about available configurations, contact www.thermofisher.com.
Be sure that all persons operating this system read the site and safety
manual first.
The site and safety guide that came with your analyzer or spectrometer contains important safety
information. Before you use the system, read the entire guide. To prevent personal injury and
damage to equipment, follow the safety precautions contained in the guide whenever you use the
system.
2 Modular Gas System User Guide ThermoScientific

Using this document
This document describes setting up, operating, and maintaining the FTIR Heated Valve Drawer as a
component of the Modular Gas System. Read this manual before you attempt to install or use the
system.
Before using this system, review the Site and Safety information that came with your spectrometer.
See the user guides for your spectrometer and other accessories for additional information.
If you have any questions or concerns after reading this manual, refer to www.thermofisher.com.
ThermoScientific Modular Gas System User Guide 3
Introduction

Introduction
Conventions used
Safety precautions and other important information use the following format:
DANGER
Avoid hazard. Indicates a hazardous situation which, if not avoided, will
result in serious injury or death.
WARNING
Avoid hazard. Indicates a hazardous situation which, if not avoided,
could result in serious injury or death.
CAUTION
Avoid hazard. Indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.
NOTICE
Follow instructions with this label to avoid damaging the system hardware or losing data.
Note Contains helpful supplementary information.
4 Modular Gas System User Guide ThermoScientific

Site requirements and safety
information
This chapter contains a summary of safety precautions for using the system. The information in this
guide is a supplement to the site and safety information that came with your instrument and to the
user guide that came with your gas cell, spectrometer or analyzer, and other system components.
See the site and safety guide that came with your system components for additional site
requirements and safety information.
Each person who will be using this device should read this chapter as well as the site and safety
information that came with your other system components.
Operating environment 6
Chapter 2
ThermoScientific Modular Gas System User Guide 5

Site requirements and safety information
Operating environment
Consider the following environmental factors when planning your work space.
Lifting and carrying
The FTIR Heated Valve Drawer weighs approximately 23 kgs (51 lbs). To avoid risk of injury, use
proper lifting techniques when lifting or moving the Heated Valve Drawer or other system
components.
CAUTION
Avoid risk of personal injury. Your Heated Valve Drawer cannot be lif-
ted safely by a single person. Lifting or moving the drawer requires two
people. Use proper lifting techniques when lifting or moving the drawer
or other system components.
Workspace considerations
The Heated Valve Drawer is measures approximately 48.26 cm wide, 30.5 cm high, and 38 cm deep
(19 in. wide, 12 in. high, and 15 in. deep). With the optional heated filter, the drawer is approximately
48.26 cm deep (19 in.)
The FTIR Heated Valve Drawer is designed to fit a standard open 19” rack
CAUTION
Do not position the FTIR Heated Valve Drawer so that it is difficult to
reach the cable connections and power switch on the rear panel.
Electrical service specification
CAUTION
Avoid shock hazard. Each wall outlet used must be equipped with a
ground. The ground must be a noncurrent-carrying wire connected to
earth ground at the main distribution box.
6 Modular Gas System User Guide ThermoScientific

The following table lists the specifications for electrical service. Contact our service representative in
your area if you have questions about the requirements.
Requirements Specifications
Input current 10 A (max.)
Input voltage 230 Vac
Line frequency 50 to 60 Hz
Line disturbances Sags, surges or other line disturbances must not exceed 10% of input
voltage (even for a half cycle).
Noise < 2 V (common mode)
< 20 V (normal mode)
Power cords
Use an appropriate power cord for the electrical service. The power cord supplied with the
spectrometer is a 3-wire, grounded power cord, appropriate for use in the country listed as the
shipping destination for the system. The main power supply cord can be replaced only by an
equivalent cable. If the power cord you received is not appropriate for the electrical system in your
location or if the power cord becomes damaged, contact us to order a new power cord.
A 10 A rated power cord must be used for each power cord.
Temperature and humidity
The FTIR Heated Valve Drawer is designed for indoor use at altitudes up to 2,000 M (6,500ft). The
drawer itself operates reliably at temperatures between 16 °C and 27 °C (60 °F and 80 °F).
Maintain humidity at 20% to 80% non-condensing.
The safe environmental operating temperatures of the gas analysis system at your location may be
restricted by the safe operating parameters for the gas cell(s) used with your analyzer or
spectrometer.
ThermoScientific Modular Gas System User Guide 7
Site requirements and safety information

Site requirements and safety information
Gas Cell Safe Operating Temperature Range
10-meter 25 °C to 185 °C (77 °F to 365 °F)
2-meter 20 °C to 185 °C (68 °F to 365 °F)
Other cells See the documentation that came with the gas cell
Ventilation of sample gases
The FTIR Heated Valve Drawer includes a gas vent on the rear panel of the drawer. Ensure that the
sample gases are vented to a safe and suitable location.
This system is designed for vacuum use only. If you are sampling toxic or hazardous gases, the gas
vent outlet must be connected to a vacuum exhaust vent system designed to safely remove these
toxic or hazardous gases.
If the vent port is blocked or connected to a source of pressure, toxic or hazardous gas could enter
the work area and break the gas cell windows. Never block or plug the vent port or connect it to a
source of pressure.
The pressure relief valve is set to 25 PSI to protect the 2M or 10M gas cell with ZnSe windows. The
relief valve is connected to the vent port.
WARNING
Avoid toxic inhalation. If you are sampling noxious, toxic, reactive,
asphyxiant, or otherwise hazardous gases, you must provide an active
venting system to vent the gases to a safe and suitable location.
DANGER
Avoid fire and explosion hazard. The infrared source inside the adja-
cent FTIR instrument is an ignition source. If you are sampling flam-
mable gases, vent the gases away from the instrument. Provide a fume
hood or other active venting system that is free of spark and other igni-
tion sources and that prevents flammable vapors from collecting in the
atmosphere surrounding these instruments.
8 Modular Gas System User Guide ThermoScientific

Fire safety and burn hazards
Components of the FTIR Heated Valve Drawer become quite hot during normal operation, including
the heated filter, sample gas line, gas fittings, and valves.
CAUTION
Avoid burn hazard. The optional heated filter becomes very hot during
normal operation. Turn off power to the heaters and allow the filter to
come to room temperature before handing the heated filter assembly.
To avoid a burn injury, turn off the FTIR Heated Valve Drawer and allow to cool to room temperature
before replacing any components.
Tip hazard
The rack mounted system can pose a tip hazard unless appropriate anti-tip extensions, feet, or
anchors are in place. Use anti-tip devices that were designed by your rack manufacturer or by a
qualified structural engineer.
Rack enclosure hazards
If your gas system is installed in an enclosed rack, ensure that the rack is properly ventilated to
prevent gases from accumulating inside the rack and internal rack temperatures from exceeding the
operating temperatures of the enclosed components.
DANGER
Avoid fire and explosion hazard. The infrared source inside the adja-
cent FTIR instrument is an ignition source. If you are sampling flam-
mable gases, vent the gases away from the instrument. Provide a fume
hood or other active venting system that is free of spark and other igni-
tion sources and that prevents flammable vapors from collecting in the
atmosphere surrounding these instruments.
ThermoScientific Modular Gas System User Guide 9
Site requirements and safety information

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Installation
This chapter describes setting up components of the Modular Gas System and connecting and
turning on the Heated Valve Drawer.
The installation steps depend on whether you have a Manual or Automatic Pressure Control system.
Your system may be configured with different connections and components. See the plumbing
diagram for your system in the Appendix before connecting gas lines.
Chapter 3
ThermoScientific Modular Gas System User Guide 11

Installation
Assemble the rack
You can install the FTIR Heated Valve Drawer and your other system components on a standard
open 19-inch rack. The optional rack accommodates the heated valve drawer, pumps and filters, and
a spectrometer or analyzer.
Depending on your configuration, your system may look different than the one shown.
Figure 3-1: Two possible configurations for the rack-mounted system
CAUTION
Avoid risk of personal injury. Your Heated Valve Drawer and the spec-
trometer or analyzer cannot be lifted safely by a single person. Lifting or
moving the drawer requires two people. Use proper lifting techniques
when lifting or moving the drawer or other system components.
Required Materials
l5/32 inch hex wrench
lTwo or more people are required for the installation
12 Modular Gas System User Guide ThermoScientific

❖To install system components on the optional rack
Step 1: Install the Heated Valve Drawer
Note If the rack is empty when you begin, you may want to carefully lay the rack flat on its back
side so that you can lower the drawer into position. The vacuum pump is also easier to install in
this postion. If there are already components on the rack, one person will need to support the
weight of the heated valve drawer while the other fastens the screws.
1. Insert the drawer into the front of the rack, aligning the holes on the front of the drawer with the
cage nut clips.
2. With one person supporting the weight of the drawer, use the six (6) hex screws and washers to
fasten the front panel of the drawer to the rack.
3. Completely tighten each of the screws.
ThermoScientific Modular Gas System User Guide 13
Installation

Installation
Step 2: Position the instrument
The system supports the IGS Analyzer on the bottom shelf of the rack or the iG50 FTIR Spectrometer
on the top of the rack.
lTo install the IGSAnalyzer on the bottom shelf of the rack
1. Slide the back feet of the anlyzer into the rear brackets to center the analyzer, and then lower the
front feet into the brackets.
When removing the analyzer, lift the front feet over the bracket and slide the analyzer forward.
lTo install the Nicolet iG50 FTIRSpectrometer on the top of the rack
The spectrometer is held in place by four screws installed from below the top of the rack upward
into the feet of the iG50
14 Modular Gas System User Guide ThermoScientific

1. Carefully position the spectrometer on top of the rack with the feet aligned over the drilled holes.
2. Insert the four (4) screws upward from underneath the top of the rack into the four feet of the spec-
trometer.
3. Tighten each of the screws completely.
4. Complete the assembly according to the installation guide that came with your spectrometer.
If your system uses a Manual Pressure Control system, proceed to step 3:install the pumps and
additional filters.
If your system uses an automatic pressure control system, turn to "The Automatic Pressure Control
System"
ThermoScientific Modular Gas System User Guide 15
Installation