MSA PremAire Cadet Escape G1 User manual

Operating Manual
PremAire Cadet Escape G1
Combination Supplied-Air Respirator with SCBA for Escape
Order No.: 10164751/01
Print Spec: 10000005389 (F)
CR: 800000058217
MSAsafety.com
US

© MSA 2022, 2023. All rights reserved
WARNING!
Read this manual carefully before using or maintaining the device. The device will perform as designed only if it is used and
maintained in accordance with the manufacturer's instructions. Otherwise, it could fail to perform as designed, and persons
who rely on this device could sustain serious injury or death.
The warranties made by MSA with respect to the product are voided if the product is not installed and used in accordance with
the instructions in this manual. Please protect yourself and your employees by following the instructions.
Please read and observe the WARNINGS and CAUTIONS inside. For additional information relative to use or repair, call
1-800-MSA-2222 during regular working hours.
MSA is a registered trademark of MSA Technology, LLC in the US, Europe and other Countries. For all other trademarks visit
https://us.msasafety.com/Trademarks.
1000 Cranberry Woods Drive
Cranberry Township, PA 16066
USA
Phone 1-800-MSA-2222
Fax [phone]
For your local MSA contacts, please go to our website www.MSAsafety.com

US PremAire® Cadet Escape G1 3
Contents
1 Safety Regulations 5
1.1 NIOSH Approval Information 5
1.2 Important Notice for Respiratory Users and Respiratory Protection Program Administrators 6
1.3 Reference 6
1.4 Contact Information 6
2 Description 6
2.1 Operating Principles 6
2.2 Cylinder and Valve Assembly 7
2.3 Attachment Hose 7
2.4 Second Stage Regulator 8
2.5 Facepiece 8
2.6 Carrier and Harness Assembly 8
3 Size Selection 8
3.1 Respirator Fit Test 9
4 Visual Inspection 9
4.1 All Components 10
4.2 Facepiece 10
4.3 Regulator 10
4.4 Cylinder and Valve Assembly 10
4.5 Carrier and Harness 11
4.6 Intermediate and Supply Hoses 11
4.7 Record Keeping 11
5 Functional Tests 11
6 Air Supply Hoses 12
6.1 Air Source 12
6.2 Air Supply Hose 12
6.3 Inlet Pressure Gauge 13
6.4 Supply Hose-to-Supply Connections 13
6.5 Supply Hose-to-Attachment Hose Connections 14
6.6 Quick-Disconnect Table Chart 14
7 Donning 15
7.1 Approval Verification 16
7.2 Donning the Respirator 16
7.3 Donning the Carrier and Harness, Right Hip Version 16
7.4 Donning the Facepiece 17
7.5 Testing the Negative Pressure Seal 18
7.6 Connecting the Air Supply Hose to the Attachment Hose 19
7.7 Installing the G1 Push-to-Connect Regulator 20
8 During Use 21
8.1 Factors that Affect the Service Life of the Respirator Escape Cylinder 22
8.2 Standard Operation 22
8.3 Emergency Operation 22
8.4 Cold Weather Operation 23
9 After Use 24
9.1 Disconnecting the G1 Push-to-Connect Regulator 24
9.2 Removing the Facepiece 25
9.3 Removing the Carrier and Harness 26

4 PremAire® Cadet Escape G1 US
10 Cleaning and Disinfecting 26
10.1 Cleaning and Disinfecting the Facepiece 27
10.2 Cleaning and Disinfecting the Remainder of the Respirator 28
11 Cylinder 28
11.1 Safety Precautions for MSA Self-Contained Breathing Apparatus Cylinders 29
11.2 Charging Cylinders 29
12 Spectacle Kit 30
13 Flow Test and Overhaul Requirements 31
13.1 Required Overhaul and Flow Test Frequency 32
14 Maintenance 32
15 Safekeeping and Storage 32
15.1 Respirator 32
15.2 Facepiece 32
16 Appendix 34
16.1 Converting the Carrier and Harness from Right Hip Mount to Left Hip Mount (Standard Carrier) 34
16.2 Converting the Carrier and Harness from Right Hip Mount to Left Hip Mount (Bag Carrier) 35
16.3 Donning the Carrier and Harness, Left Hip Version 37

1 Safety Regulations
US PremAire® Cadet Escape G1 5
1 Safety Regulations
This respirator is certified by the National Institute of Occupational Safety and Health (NIOSH).
1.1 NIOSH Approval Information
WARNING!
Read and obey all NIOSHapproval limitations.
Failure to follow this warning can result in serious personal injury or death.
This pressure-demand, self-contained breathing apparatus (SCBA) is certified by the National Institute for Occupational
Safety and Health (NIOSH) for use in atmospheres immediately dangerous to life or health (IDLH):
“Immediately dangerous to life or health” means conditions that pose an immediate threat to life or health or conditions that
pose immediate threat of severe exposure to contaminants, such as radioactive materials, which are likely to have adverse
cumulative or delayed effects on health [Title 42 CFR, Part 84.2, (Q)].
Certifying Agency Contact Information
National Institute for Occupational Safety and Health (NIOSH)
Phone: 800-CDC-4636
NIOSH Cautions and Limitations
D - Airline Respirators can be used only when the respirators are supplied with reparable air meeting the requirements of
CGA C-7.1 Grade D or higher quality.
E- Use only the pressure ranges and hose lengths specified in the User's Instructions
I- Contains electrical parts which have not been evaluated as an ignition source in flammable or explosive atmospheres by
MSHA/NIOSH.
J- Failure to properly use and maintain this product could result in injury or death.
M- All approved respirators shall be selected, fitted, used and maintained in accordance with MSHA, OSHA and other
applicable regulations.
N- Never substitute, modify, add or omit parts. Use only exact replacement parts in the configuration as specified by the
manufacturer.
O- Refer to Users Instructions, and/or maintenance manuals for information on use and maintenance of these respirators.
S- Special or critical User’s Instructions and/or specific use limitations apply. Refer to user instructions before donning.
NIOSHS - Special or Critical User's Instructions
• Approved for use at temperatures above -25° F (-32° C).
• Approved for G1 configurations only when respirator is supplied with respirable air through an air supply hose with a
minimum length of 9.5 inches and a maximum length of 300 feet within a pressure range of 70-110 psig.
• A maximum of 12 sections of straight or uncoiled air supply hose may be used in making up the working length of
hose. When using coiled hose, a maximum of six sections may be used and each section is considered to be 50 feet
long. Hose sections vary from 9.5 inches to 100 feet lengths. The air-line connection to the apparatus is to be made
through approved Quick-Disconnects only. The purity of the air supply is the responsibility of the user. The respirator
is approved only when the air supplied meets the requirements of the Compressed Gas Association Specification G-
7.1 for quality verification level (Grade) D air or equivalent specifications.
• Approved only when the compressed-air cylinder is fully charged with air meeting the requirements of the
Compressed Gas Association Specification G-7 for quality verification level (grade) D air or equivalent specifications.
• In fire service applications, MSA recommends breathing air quality in accordance with NFPA 1989.
• The cylinder shall meet applicable DOT specifications.

6 PremAire® Cadet Escape G1 US
2 Description
• Use with adequate skin protection when worn in gases and vapors that poison by skin absorption(for example:
hydrocyanic-acid gas).
• For NIOSH G1 configurations, see Approval Insert (P/N 10163122).
1.2 Important Notice for Respiratory Users and Respiratory Protection Program Administrators
1. Before occupational use of this respirator, a written respiratory protection program must be implemented meeting all
the local government requirements. In the United States, employers must comply with OSHA 29 CFR 1910.134
which includes medical evaluation, training, and fit testing.
2. An adequate respiratory protection program must include knowledge of hazards, hazard assessment, selection of
proper respiratory protective equipment, instruction and training in the use of equipment, inspection and
maintenance of equipment, and medical surveillance. [See OSHA regulations, Title 29 CFR, Part 1910.134 (c).]
3. This respirator may be used only after proper instruction and training in its use as specified in OSHA regulations Title
29 CFR, Part 1910.134.
4. Do not mark the respirator, i.e., with stamps, labels, paint, or other method. Use of such markings may interfere with
apparatus use or may constitute a flammability hazard.
5. Be sure that no other equipment interferes with the respirator facial seal, the user’s ability to operate the respirator, or
other necessary means of mobility.
1.3 Reference
For more information on the respirator use and performance standards, consult the following publications:
• ANSI Z88.2 - Latest edition, Practices for Respiratory Protection, American National Standards Institute,
https://webstore.ansi.org/Info/Sdolist. (This standard is superseded by ASTM F3387)
• ASTM F3387 - Latest edition , Standard Practices for Respiratory Protection, ASTM International
https://www.astm.org/Standard/standards-and-publications.html (ASTM F3387 formerly known as ANSI Z88.2)
• Title 29 CFR Part 1910.134, Respiratory Protection Standard, https://www.osha.gov/law-regs.html
1.4 Contact Information
In the event of a product concern, contact your local MSA authorized repair center or distributor, who will provide the
necessary information to MSA for issue resolution. To report any serious concerns or to inquire about the products use the
following contact information:
MSA North America
Corporate Center MSA Canada MSA de Mexico, S A De C V
1000 Cranberry Woods Drive
Cranberry Township, PA 16066
Phone 1-800-MSA-2222
Fax [phone]
16435 118th Avenue
Edmonton AB T5V 1H2
Phone 1-800-MSA-2222
Fax [phone]
Fraccionamiento Industrial Avenida,
Del Conde #6
76240 El Marques, Queretaro
Phone [phone]
Fax [phone]
2 Description
2.1 Operating Principles
The PremAire Cadet Escape Respirator is a combination supplied-air respirator with self-contained breathing apparatus
(SCBA) for escape.
The PremAire Cadet Escape Respirator utilizes a pressure-demand regulator mounted at the facepiece. This mask
mounted regulator (MMR) maintains a slight positive pressure within the facepiece while regulating and reducing the air
supply to a breathable pressure. This is accomplished by using a diaphragm that senses the breathing demands of the
user in a controlled feedback state. The positive pressure of air inside the facepiece, whether the wearer is inhaling or
exhaling, is to prevent contaminants from entering the facepiece, should there be slight face-to-facepiece seal leakage.

2 Description
US PremAire® Cadet Escape G1 7
The respirator is suitable for use with a large, compressed air cylinder of breathable air or a bank of cylinders set up in
cascade fashion. Alternatively, the PremAire Cadet Escape Respirator can be used with a compressor system designed
and configured to supply respirable breathing air to the respirator, within the NIOSH approved pressure range.
In normal use, the PremAire Cadet Escape Respirator is connected to an air supply of a type and duration selected by the
user and will provide respiratory protection as long as the user remains connected to the air supply. The respirator allows
the wearer to work within the limits of the approved air-supply hose. The escape cylinder is not to be used for entry. The
escape cylinder should not be used to switch from one airline to another. However, should the primary air supply fail or be
interrupted, the emergency escape cylinder enables the wearer to egress from the potentially IDLH atmosphere.
2.2 Cylinder and Valve Assembly
The cylinder and valve assembly consists of a cylinder and a combination cylinder
valve and first stage regulator valve. The cylinders are available in 5, 10, and 15
minute rated service time durations. The cylinders are available in aluminum or carbon
fiber material options. The cylinders are available in 2216, 3000, or 4500 psig service
pressures.
The valve assembly includes a handwheel to open and close the cylinder air supply, a
recessed/protected pressure gauge to measure cylinder contents, a cylinder fill port
with check valve to pressurize the cylinder, a high pressure relief device to protect the
cylinder from over-pressurization, an intermediate pressure relief valve to protect the
second stage regulator from over-pressurization, and a first stage regulator valve to
reduce cylinder pressure to a suitable intermediate pressure. The first stage regulator
valve incorporates a downstream design and dual springs to provide maximum
reliability.
The valve assembly is available with either threaded or quick-connect hose
connections. The threaded hose connection has the regulator and attachment hose
semi-permanently attached to the cylinder and valve. The quick-connect option has
the regulator and attachment hoses attached to a separate T-manifold that can quickly
disconnect from the cylinder and valve assembly for convenient cylinder filling and
change out.
2.3 Attachment Hose
The attachment hose is used to connect the air supply hoses to the cylinder and valve
assembly. The attachment hose includes a large sintered filter to remove particulate
from the supplied air source. The attachment hose includes a check valve to prevent
loss of air through the hose when the cylinder valve is open (SCBA mode). MSA
approved quick-disconnects are fitted to the end of the attachment hose.

8 PremAire® Cadet Escape G1 US
3 Size Selection
2.4 Second Stage Regulator
The second stage regulator is a pressure-demand regulator. The release button on
bottom of the regulator stops air flow. To stop airflow, push the button in. To restart the
regulator, inhale sharply. The regulator attaches to the facepiece with Push-To-
Connect connectors.
2.5 Facepiece
The facepiece and nosecup are available in three sizes (small, medium, and large).
The facepiece includes a large lens to optimize field of view and a mechanical speech
diaphragm to enhance speech communication. When the facepiece is not connected
to a regulator, an opening in the facepiece connection lets airflow bypass the inhalation
valve and exhalation valves, which decreases breathing resistance and further
enhances speech communication. The facepiece includes a broad range of head
harness designs and material options. An optional spectacle kit is available.
2.6 Carrier and Harness Assembly
The carrier and harness assembly consists of a cylinder carrier, a waist belt, a shoulder strap, and attachment hose strain
relief strap.
The carrier and harness assembly is available in nylon or Kevlar materials.
The cylinder carrier is available in standard and bag versions. The standard version includes metal clamps and fabric
straps. The bag version includes a single bag with draw string. Cylinder carriers are removable from the harness using
quick release hardware.
The waist belt is available in two sizes, standard and large. The waist belt includes a side-release buckle with single
adjustment. The shoulder strap includes a large adjustment buckle.
A shoulder pad accessory is available.
The harness assembly includes a stand-by mount to stow the second stage regulator when the respirator is not in use.
3 Size Selection
WARNING!
The facepiece will not provide protection unless all inhaled air is drawn through the SCBA.
Failure to follow this warning can result in serious personal injury or death.
NOTE: Individuals who wear eyeglasses must use the G1 spectacle kit to guarantee a correct fit. Ordinary eyeglasses
cannot be worn under the facepiece.
Regardless of facial dimensions and respirator sizing charts, users must do an actual qualitative or quantitative respirator
fit test to make sure the correct respirator size is selected.

4 Visual Inspection
US PremAire® Cadet Escape G1 9
1. Do a fit test of the respirator size relative to your facial features and dimensions. Ask the safety administrator or
program manager for help selecting the initial size to try.
2. Don the facepiece. Refer to Section 7.4 Donning the Facepiece for instructions.
3. Do a negative-pressure seal test. Refer to Section 7.5 Testing the Negative Pressure Seal for instructions.
4. If the facepiece does not pass the negative-pressure seal test or feels uncomfortable, try the next nearest size
relative to your face.
5. Passing the negative-pressure seal test does not verify that the size is correct. Do a qualitative or quantitative
respirator fit test to verify the size. If the respirator passes a negative-pressure seal test but does NOT pass a
respirator fit test, try the next nearest size.
If other leakage than from the facial seal occurs, find and correct the condition, then do the test again.
3.1 Respirator Fit Test
WARNING!
• Do quantitative or qualitative respirator fit tests routinely for each wearer of this respirator. Obey all specified
warnings and limitations. Failure to do so can result in serious personal injury or death.
• Make sure the probe does not contact the face during fit testing. Failure to do so can result in false protection factor
readings.
Failure to follow these warnings can result in serious personal injury or death.
Use the instructions provided with the MSA Quik Chek Kit (P/N805078) to perform respirator fit testing.
3.1.1 Quantitative Test
A fit factor of at least 500, based on ambient aerosol fit test methods or equivalent, is required before any type of respirator
is assigned to an individual.
3.1.2 Qualitative Fit Test
Only validated protocols are acceptable. The respirator must pass a test designed to assess a fit factor of at least 500.
4 Visual Inspection
Conduct the visual inspections: Upon receipt, daily, and after use.
Inspect the entire respirator after it is cleaned and disinfected.
ASTM F3387 and OSHA 29 CFR 1910.134, describe three levels of inspection procedures which are to be performed.
Refer to these documents, or to an inspection program prepared by a health professional in establishing an inspection
program. Detailed repair procedures are located in MSA User’s Maintenance Instructions.
WARNING!
DONOT inspect the respirator before cleaning if there is danger of contacting hazardous contaminants. Clean and
disinfect first, then inspect.
Failure to follow this warning can cause inhalation or skin absorption of the contaminant and result in serious
personal injury or death.
WARNING!
• If the respirator exhibits any of the conditions listed in the Visual Inspections section or if the respirator does not
function properly for all tests as described in the Functional Tests section, the respirator must be removed from
service and the condition must be checked and corrected by an MSA trained and certified repair person before using.
• Never substitute, modify, add, or omit parts. Use only exact replacement parts in the configuration as specified by the
manufacturer.

10 PremAire® Cadet Escape G1 US
4 Visual Inspection
Failure to follow this warning can result in serious personal injury or death.
4.1 All Components
1. Inspect all components for deterioration, dirt, cracks, debris, tears, holes, stickiness, signs of heat or chemical
related damage or other visible signs of damage.
2. Inspect all straps (shoulder pads, pull straps, lumbar pad, waist straps, facepiece head harness) for tears, cuts, wear,
abrasion, missing buckles or straps.
3. Perform all component specific inspections listed below.
4.2 Facepiece
1. Inspect the lens for cracks, scratches, deformation, and color change.
2. Check the facepiece rubber for a tight seal and secure fit to the lens ring.
3. Ensure the exhalation valve is clean and operates easily. The valve must move off the seat and return when released
(from inside the facepiece).
4. Inspect the facepiece inlet for damage. Ensure the inhalation valve is in place.
5. Inspect the nosecup to ensure the check valve are in place and the nosecup is secure to the component housing.
4.3 Regulator
1. Ensure that moisture or debris is not present, especially inside the regulator.
2. Ensure the o-ring and seal ring are free of debris and not damaged or missing.
3. If the SCBA is equipped with a quick connect hose, inspect the rubber seal for deterioration, dirt, cracks, tears, or
tackiness.
○ Inspect the quick connect fittings.
○ Ensure that the openings are clear and free of debris and other contaminants.
○ Ensure that the quick connect fittings operate properly and are secured.
4.4 Cylinder and Valve Assembly
Breathing apparatus cylinders should be recharged as soon as possible after use. Cylinders should not be stored partially
charged for two reasons:
If used without recharge, the service life of the respirator is reduced.
The cylinder burst disc vents excess pressure if a full cylinder is over exposed to fire or heat. If the cylinder is not full, it may
be damaged before the burst disc vents.
1. If the cylinder is less than FULL, recharge it before storing it. Cylinder air must be at least CGA Quality Verification
Level (Grade) D respirable air.
2. Inspect the cylinder valve for signs of damage.
3. Inspect the cylinder body for cracks, dents, weakened areas, corrosive agent, causing the fibers to break or peel, or
signs of heat-related damage. If the cylinder is damaged return it to an MSA Service Center. Call 1-800-MSA-2222
for instructions.
4. Check the hydrostatic test date on the cylinder approval sticker located on the cylinder neck. Aluminum and carbon
fiber cylinder must be tested every five years.
5. Ensure the needle and gauge face on the cylinder valve gauge are clearly visible and that the gauge stem is not bent.
6. Inspect the high pressure relief device. Verify that the relief holes are clear and free of debris or other contamination.
7. Inspect the intermediate pressure relief valve. Verify that the relief holes are clear and free of debris or other
contamination.
8. Inspect the valve assembly seal ring to verify that it is present and properly seated. Inspect the seal ring for rubber
deterioration, dirt, cracks, tears, holes, or tackiness.
9. Inspect the hose connections. Verify that the hoses are properly secured.

5 Functional Tests
US PremAire® Cadet Escape G1 11
10.If the cylinder and valve assembly is equipped with quick connect coupling, inspect the coupling on cylinder and
valve and T-manifold.
○ Inspect quick-connect fittings.
○ Ensure the openings are clear and free of debris and other contaminants
○ Ensure the quick-connect fittings operate properly and are secured after inspection
11.Inspect the fill port. Verify that the fill port dust cap is present and properly secured.
It is also essential that the required inspections and tests be performed on all respirator cylinders in accordance with
Department of Transportation (DOT) regulations. DOT regulations require that composite cylinders be retired from service
after the fifteenth year. Please note this does not include cylinder valve assembly which may be reused. Aluminum cylinder
service life is indefinite if proper inspection and hydrotest procedures are followed and they indicate that the cylinder may
remain in service. Contact an MSA distributor or sales associate for additional information regarding this policy.
NOTE: OSHA 29 CFR 1910.134 recommends checking cylinder pressure weekly. For maximum safety the cylinders
should be stored full or empty (pressure above ambient but less than 100 psig).
4.5 Carrier and Harness
1. Inspect all harness components for cuts, tears, abrasion or signs of heat or chemically-related damage.
2. Inspect the cylinder carrier components for cuts, tears, abrasion or signs of heat or chemically-related damage.
○ Verify that the carrier securely retains the cylinder.
4.6 Intermediate and Supply Hoses
1. Inspect the airline hose for signs of cuts, tears, voids, abrasion, tackiness, brittleness, or signs of heat or chemically-
related damage.
1. Inspect the end fittings and ferrules for signs of cuts, voids, abrasion, cracks, splitting, oxidation, signs of heat, or
chemically-related damage.
4.7 Record Keeping
Following inspection, the date and initials of the designated inspector should be recorded on an inspection tag. A more
detailed record of the operations performed can be noted on an inspection and maintenance log, available from MSA.
When the inspection data has been recorded, the respirator is ready for use.
5 Functional Tests
WARNING!
If the respirator does not function properly as described in the Functional Tests section, the respirator must be removed
from service and must be checked and corrected for proper operation by an MSAtrained or certified repair person before
using.
Failure to follow this warning can result in serious personal injury or death.
If the respirator has passed the visual inspection successfully, conduct the functional tests daily and after each use.
If any part of the respirator fails the functional test, do not use the respirator and return the device to a certified repair
technician.
NOTE: The functional checks must be conducted with a full cylinder. Before starting the tests, check the pressure gauge
on the cylinder valve to verify that the cylinder is full.
Check that the Regulator and Facepiece Can Hold a Negative Pressure
1. Close the cylinder valve and purge any air from the system using the bypass knob or the purge cover on the regulator
2. Hold the facepiece against the face to create an effective seal.
3. Attach regulator to the facepiece and inhale until the facepiece begins to collapse against the face.
4. Hold breath for approximately 10 seconds.

12 PremAire® Cadet Escape G1 US
6 Air Supply Hoses
○ Negative pressure should be maintained and the facepiece should remain collapsed against the face for the
entire 10 seconds.
NOTE: Do not use the respirator if negative pressure cannot be maintained in the facepiece.
Check Function of Regulator
1. Push the release buttons on the side of the regulator to ensure the regulator is shut off.
2. If the regulator is equipped with a bypass valve, ensure that the bypass knob is fully closed (clockwise).
3. Open the cylinder valve and ensure the valve is completely open.
4. Open the bypass knob (counterclockwise).
○ Ensure that air flows from the regulator.
5. Close the bypass knob (clockwise).
6. Attach the regulator to the facepiece.
NOTE: Ensure proper attachment by pulling on the regulator.
7. Don the facepiece or hold the facepiece against the face to create an effective seal.
8. Inhale sharply to start air flow.
9. Breathe normally.
a. Ensure proper regulator response.
b. The regulator should NOT make any unusual sounds including whistling, chattering, or popping.
10.Remove the facepiece from the face.
a. Ensure that air flows freely.
b. Push the regulator release buttons and ensure air flow stops.
11.Check the attachment hose quick-disconnect plug.
a. Verify that no air flows through the plug when the cylinder valve knob is open.
12.After completing the functional checks, recharge the cylinder and valve assembly before storing it.
6 Air Supply Hoses
6.1 Air Source
The purity of the air supply is the responsibility of the user. The respirator is approved only when the air supplied meets the
requirements of the Compressed Gas Association Specification G-7.1 for quality verification level (Grade) D air or
equivalent specifications.
6.2 Air Supply Hose
The PremAire Cadet Escape Respirator can be used with a wide range of MSA air supply hoses with a minimum length of
9.5 inches and a maximum length of 300 feet. For G1 configurations, the minimum air supply pressure is 70 psig and the
maximum air supply pressure is 110 psig. A maximum of 12 sections of straight or uncoiled air supply hose may be used in
making up the working length of hose. When using coiled hose, a maximum of six sections may be used and each section
is considered to be 50 feet long. Hose sections vary from 9.5 inches to 100 feet lengths. The air-line connection to the
apparatus is to be made through approved quick-disconnects only.
WARNING!
Particles and contaminants can enter an air-line respirator system when air-supply hoses are disconnected and/or
reconnected in a contaminated atmosphere. This could result in inhalation of contaminants. It is the user’s responsibility to
determine the potential risk and take the necessary precautions, which may require prohibiting disconnection or
reconnection of air supply hoses in a contaminated atmosphere. If in doubt DO NOT disconnect and/or reconnect air
supply hoses.
Failure to follow this warning can result in serious personal injury or death.

6 Air Supply Hoses
US PremAire® Cadet Escape G1 13
WARNING!
MSA air supply hoses have temperature limitations. DO NOT use the PremAire Cadet Escape Respirator whenever
ambient or inlet-air temperatures exceed the limits specified below for each hose material.
Failure to follow this warning can result in serious personal injury or death.
Hose Material Recommended Limits
Polyvinyl Chloride 32° F to 120° F (0° C to 48° C)
Neoprene -25 F to 212 F (-31° C to 100° C)
Nylon (coiled) -20 F to 180 F (-28°C to 82° C)
6.3 Inlet Pressure Gauge
To ensure accurate pressure readings, the inlet pressure gauge must be located at the air source.
6.4 Supply Hose-to-Supply Connections
Use MSA-approved couplings only for supply hose connections.
CAUTION!
Hoses must only be interconnected with either the threaded connector (3/4-16 UNF) or locking quick-disconnect couplings
listed below. DO NOT use non-locking quick disconnects to interconnect air supply hoses.
Failure to follow this caution can result in minor or moderate injury.
CEJN - Chrome
Threaded (3/4" - 16 UNF)*
*This typical threaded connector method can be used to interconnect sections of approved air-supply hose to the PremAire System.

14 PremAire® Cadet Escape G1 US
6 Air Supply Hoses
Snap-Tite Aluminum
Snap-Tite Stainless Steel
Locking quick-disconnects connect by pushing the plug and socket together. To separate, push the plug and socket
together, then pull the socket sleeve away from the plug.
6.5 Supply Hose-to-Attachment Hose Connections
Attachment hose connections are to be made through approved MSA couplings only.
6.6 Quick-Disconnect Table Chart
Locking Types
Snap-Tite - Aluminum (AL), Brass (BR), Stainless Steel (SST)

7 Donning
US PremAire® Cadet Escape G1 15
Non-Locking Types
Snap-Tite - Aluminum (AL), Brass (BR), Stainless Steel (SST)
Foster - Steel (S), Stainless Steel (SST)
Hansen - Brass (BR)
Non-Locking Types with Valve in Plug
Foster - Brass (BR)
Hansen - Stainless Steel (SST)
7 Donning
WARNING!
• Obey the instruction in this section to make sure that the respirator operates correctly before going into a hazardous
atmosphere.
• If the respirator does not operate correctly as described in this section, remove the respirator from service. Make
sure an MSAtrained and certified repair technician corrects the unsatisfactory condition before returning the
respirator to service.
• If you have a beard, gross sideburns, or similar physical characteristics that prevent direct contact between your skin
and the sealing surface of the facepiece, this device may not seal properly with your face (refer to NFPA 1500 and
OSHA 29 CFR 1910.134). An incorrect facial seal can let contaminants leak into the facepiece, decreasing or
removing respiratory protection. Do NOT use this device if such conditions exist.
• Do a test of the face-to-facepiece seal before each use.
• Make sure the correct nosecup is installed in the facepiece.
• Individuals who wear eyeglasses must use the G1 spectacle kit to guarantee a correct fit. Ordinary eyeglasses
cannot be worn under the facepiece.
• Only remove the facepiece in a safe, nonhazardous, nontoxic atmosphere.
Failure to follow these warnings can result in serious personal injury or death.

16 PremAire® Cadet Escape G1 US
7 Donning
7.1 Approval Verification
Before using the respirator review all NIOSHapproval labels and approval inserts to make sure the respirator is in an
approved configuration. For details and a complete list of cautions and limitations for the respirator refer to 1 Safety
Regulations. For NIOSH 42 CFR Part 84 approval configurations, refer to the G1 PremAire Cadet Escape Approval Label
Insert (P/N10163122).
7.2 Donning the Respirator
1. Remove the respirator from its storage location/case.
2. Check that the cylinder is fully pressurized
CAUTION!
DONOT use a partially full cylinder. If the cylinder is not full, escape service time is decreased.
Failure to follow this caution can result in minor or moderate injury.
WARNING!
DONOT enter any area that requires an escape time greater than the service life of the cylinder. Cylinder life varies with
the work rate of the individual and may be shorter with heavy work loads.
Failure to follow this warning can result in serious personal injury or death.
Quick-connect cylinder configuration only
NOTE: Make sure the t-manifold nipple is connected to coupling of the cylinder
valve prior to use. If not connected opening cylinder will not supply air to
regulator.
3. Connect the air supply hoses to each other.
4. Connect the air supply hoses to the air source.
7.3 Donning the Carrier and Harness, Right Hip Version
See 16 Appendix for left hip placement.
1. Hold the shoulder strap with the left hand.
2. Slide shoulder strap over head so that the shoulder strap is positioned over the
left shoulder and the cylinder is positioned on the right hip.

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US PremAire® Cadet Escape G1 17
3. Adjust the shoulder strap by pulling the strap down.
NOTE: The cylinder should be positioned at or just below waist level.
4. Connect the waist belt buckle
5. As necessary, slide the waist belt buckle toward the cylinder to properly position
the belt.
6. Adjust the waist strap by pulling the strap to the left.
7. Tuck in loose ends of shoulder strap and waist belt.
7.4 Donning the Facepiece
The facepiece is either carried using the neck strap in front of the chest or using the clip on the shoulder strap. To ensure
protection from dirt and debris, ensure the facepiece opening is towards the user's body.
1. Spread the harness with both hands.

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2. Position the chin into the chin cup.
3. Pull the head straps over your head.
NOTE: Ensure that the harness is sitting correctly and is not twisted.
4. Adjust facepiece and tighten the straps firmly and evenly.
WARNING!
Ensure that the top of the facepiece seal directly contacts the user's forehead. Ensure that there is no hair between the
facepiece's seal and the user’s skin.
Failure to follow this warning can result in serious personal injury or death.
7.5 Testing the Negative Pressure Seal
WARNING!
• If the facepiece does not hold a negative pressure seal, remove the respirator from service and return it to an MSA
trained and certified repair technician.
• Do a negative pressure seal test before each use and before going into a toxic atmosphere.
Failure to follow this warning can result in serious personal injury or death.
In order to check the facepiece-to-face tightness, a leak test must be performed before each use.

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1. Seal the inlet connector with the palm of your hand or by attaching the
regulator.
NOTE: If properly aligned the bypass knob will show on the right side of the
user's facepiece.
2. Test tightness.
a. Inhale and hold breath for 10 seconds.
b. The facepiece must stay collapsed on face.
c. Exhale.
NOTE: The exhalation valve should open and release the pressure inside
the facepiece.
3. (If necessary retighten the straps.
NOTE: If the leak test fails the facepiece must not be used.
7.6 Connecting the Air Supply Hose to the Attachment Hose
1. Verify that the cylinder valve knob is completely closed (clockwise).
WARNING!
• DO NOT open the cylinder valve knob unless in an emergency escape application. Doing so while connected to an
air source could result in depleted cylinder pressure and decreased escape time.
• DO NOT enter any area which requires an escape greater than the service life of the cylinder. Cylinder life varies with
the work rate of the individual and may be shorter with heavy work loads.
Failure to follow these warnings can result in serious personal injury or death.
2. Push the regulator release buttons to shut off the regulator
3. While pressing the release buttons, pull the regulator out of the stand-by mount.

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4. Connect the air supply hose to the attachment hose.
5. Pull on the quick-disconnect plug and socket to verify that the hoses are securely
attached.
6. Listen and inspect for air leakage from the regulator, cylinder and valve
assembly, and hose connections.
WARNING!
DO NOT use the respirator if it exhibits leakage. Return the respirator to an MSA trained or certified repair person to
correct the condition.
Failure to follow this warning can result in serious personal injury or death.
7. Check for bypass operation. Grasp the red knob and turn it counter-clockwise.
Listen for airflow. Turn the knob clockwise to close the bypass.
7.7 Installing the G1 Push-to-Connect Regulator
1. Grasp the regulator and insert it into the facepiece by pushing inward.
NOTE: If properly aligned the bypass knob will show on the right side of the
user's facepiece.