MSA G1 PAPR User manual

MSAsafety.com
Operating Manual
G1 Powered Air-Purifying Respirator (PAPR)
Full Facepiece Respirator
Order No.: 10192450/02
Print spec.: 10000005389(F)
CR 800000041171

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
© MSA 2020. 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 for their safety 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 any additional information relative to
use or repair, call 1-800-MSA-2222 during regular working hours.
For alternate languages, refer to part number 10192482.

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G1 Powered Air-Purifying Respirator (PAPR)
US
Contents
1 Safety Regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 NIOSH Approval Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1.1 Certifying Agency Contact Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 NIOSH Cautions and Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3 NIOSH Cautions and Limitations of Use for Chemical, Biological, Radiological, and Nuclear (CBRN)
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.4 Important Notice for Respirator Users and Respiratory Protection Program Administrators . . . . . . . . . . 6
1.5 CBRN Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.6 References. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.7 Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.8 Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.1 G1 Facepiece. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.2 APR Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.3 C420 Respirator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.4 Air Filtration Cartridges/Canisters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.5 G1 Spectacle Kit (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3 Size Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1 Respirator Fit Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1.1 Quantitative Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1.2 Qualitative Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4 Visual Examinations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...14
4.1 All Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.2 G1 Facepiece. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.3 APR Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.4 C420 Respirator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.5 Air Filtration Cartridges/Canisters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5 Before Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.1 Respirator Use Limitations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.2 Exposure Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.3 Mixtures of Contaminants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.4 Exposure Limits for Mixtures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6 Preparing for Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.1 Installing the Waist Belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.2 Installing the Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.2.1 Single-Use (Li-SO2) Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.2.2 Rechargeable (NiMH) Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.2.3 Installing the Battery in the Blower Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.3 Installing the APR Adapter on the Facepiece . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.4 Installing the Breathing Tube on the Blower Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.5 Installing the Breathing Tube in the Facepiece and APR Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.6 Airflow Testing without Air Filtration Cartridges/Canisters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...23

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G1 Powered Air-Purifying Respirator (PAPR)
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6.7 Installing Air Filtration Cartridges/Canisters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
6.8 Airflow Testing with Air Filtration Cartridges/Canisters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7 Donning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
7.1 Donning in Normal Weather. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
7.2 Donning in Cold Weather. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
7.3 Testing the Negative Pressure Seal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
8 During Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
8.1 In-Use Airflow Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
8.2 Cold Weather Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
9 After Use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
9.1 Doffing the Respirator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
10 Cleaning and Disinfecting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
10.1 G1 Facepiece. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
10.2 APR Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
11 Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
11.1 Discarding Single-Use (Li-SO2) Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
11.2 Charging Rechargeable (NiMH) Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
11.3 Discarding Rechargeable (NiMH) Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
12 G1 Spectacle Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
13 Maintenance and Recertification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
14 Safekeeping and Storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
14.1 G1 Facepiece. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
14.2 C420 Respirator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
14.3 Air Filtration Cartridges/Canisters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
14.4 Batteries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
14.5 CBRN Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
14.6 Removing the Device from Service Permanently . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
15 Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

5
Safety Regulations
G1 Powered Air-Purifying Respirator (PAPR)
US
1 Safety Regulations
This respirator complies with the National Institute for Occupational Safety and Health (NIOSH) regu-
lation under 42 CFR Part 84.
1.1 NIOSH Approval Information
WARNING!
Read and obey all NIOSH approval limitations. Failure to obey this warning can result in serious injury
or death.
1.1.1 Certifying Agency Contact Information
National Institute for Occupational Safety and Health (NIOSH)
Phone: 800-CDC-4636
1.2 NIOSH Cautions and Limitations
1.3 NIOSH Cautions and Limitations of Use for Chemical, Biological, Radiological, and Nuclear
(CBRN) Applications
A- Not for use in atmospheres containing less than 19.5 percent oxygen.
B- Not for use in atmospheres immediately dangerous to life or health.
C- Do not exceed maximum use concentrations established by regulatory standards.
F- Do not use powered air-purifying respirators if airflow is less than four cfm (115 lpm) for tight
fitting facepieces or six cfm (170 lpm) for hoods and/or helmets.
H- Follow established cartridge and canister change schedules or observe ESLI to ensure that
cartridges and canisters are replaced before breakthrough occurs.
I- Contains electrical parts that may cause an ignition in flammable or explosive atmospheres.
J- Failure to properly use and maintain this product could result in injury or death.
L- Follow the manufacturer's User Instructions for changing cartridges, canisters and/or filters.
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 User’s Instructions, and/or maintenance manuals for information on use and mainte-
nance of these respirators.
P- NIOSH does not evaluate respirators for use as surgical masks.
S- Special or critical User's Instructions and/or specific use limitations apply. Refer to User's Instruc-
tions before donning.
A- Not for use in atmospheres containing less than 19.5 percent oxygen.
F- Do not use powered air-purifying respirators if airflow is less than four cfm (115 lpm) for tight
fitting facepieces or six cfm (170 lpm) for hoods and/or helmets.
H- Follow established cartridge and canister change schedules or observe ESLI to ensure that
cartridges and canisters are replaced before breakthrough occurs.
I- Contains electrical parts that may cause an ignition in flammable or explosive atmospheres.
J- Failure to properly use and maintain this product could result in injury or death.
L- Follow the manufacturer's User Instructions for changing cartridges, canisters and/or filters.
M- All approved respirators shall be selected, fitted, used and maintained in accordance with MSHA,
OSHA and other applicable regulations.

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Safety Regulations
G1 Powered Air-Purifying Respirator (PAPR)
US
1.4 Important Notice for Respirator Users and Respiratory Protection Program Administrators
WARNING!
This respirator supplies LIMITED protection.
Before occupational use of this respirator, a written respiratory protection program must be imple-
mented 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.
An adequate respiratory protection program must include knowledge of hazards, hazard assess-
ment, selection of correct respiratory protective equipment, instruction and training in the use of
equipment, inspection and maintenance of equipment, and medical surveillance.
This respirator will perform as designed only if it is used and maintained strictly according to the
manufacturer's instructions, labels, and limitations. The Program Administrator and the users must
read and understand these instructions before using or servicing this device.
Do NOT substitute, modify, add, or omit parts. Use only exact replacement parts in the configura-
tion specified by MSA.
Examine the respirator regularly and maintain it according to the instructions in this manual. Only
MSA trained repair technicians can do repairs.
If the respirator does not operate as specified in this manual, remove it from service and return it
to an MSA trained repair technician.
This respiratory protective device does not supply oxygen. Use the device only in areas that have
sufficient ventilation.
Use this respirator with the correct air filtration cartridge/canister for protection against specific
chemical and/or particulate contaminants. Do NOT use this device if you cannot make sure that
the air filtration cartridge/canister is applicable for the contaminant. The respirator will not supply
protection unless all inhaled air is pulled through an applicable air filtration cartridge/canister.
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 mainte-
nance of these respirators.
R- Some CBRN agents may not present immediate effects from exposure, but can result in delayed
impairment, illness, or death.
S- Special or critical User's Instructions and/or specific use limitations apply. Refer to User's Instruc-
tions before donning.
Y- This respirator provides respiratory protection against inhalation of radiological and nuclear dust
particles. Procedures for monitoring radiation exposure and full radiation protection must be
followed.
Z- If during use, an unexpected hazard is encountered such as a secondary CBRN device; pockets
of entrapped hazard or any unforeseen hazard, immediately leave the area for clean air.
BB- Not for use for entry into atmospheres immediately dangerous to life or health.
CC- For entry, do not exceed maximum use concentrations established by regulatory standards.
GG- Direct contact with CBRN agents requires proper handling of the respirator after use. Correct
disposal procedures must be followed.
UU- The respirator should not be used beyond eight (8) hours after initial exposure to chemical
warfare agents to avoid possibility of agent permeation. If liquid exposure is encountered, the
respirator should not be used for more than two (2) hours.
VV- PAPRS with TC-23C approvals may NOT be used for escape from IDLH atmospheres.

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Safety Regulations
G1 Powered Air-Purifying Respirator (PAPR)
US
Do NOT use this device if:
- The identity of the contaminant is unknown.
- The concentration of the contaminant is unknown.
- The permissible exposure limit (PEL), recommended exposure limit (REL), and/or threshold limit
value (TLV) of the contaminant is unknown.
An approved professional must supply an applicable change-out schedule for air filtration
cartridges/canisters, unless the cartridge/canister has an end-of-service-life indicator. The change-
out schedule must include all factors that have an effect on respiratory protection, including work
practices and other conditions that are specific to the users' environment.
If this respirator is used for protection against substances that have poor warning properties, there
is no secondary method of notification about when to replace the air filtration cartridges/canisters.
Obey applicable additional precautions to prevent overexposure, such as a more conservative
change-out schedule or use of a supplied-air respirator (SAR) or self-contained breathing appa-
ratus (SCBA).
Do NOT use this device with urethane paints or other paints that have diisocyanates unless there
is a change-out schedule for air filtration cartridges/canisters. Because of their poor warning prop-
erties, overexposure to these substances can occur without user awareness and result in severe
permanent damage to the respiratory system.
Go out of a contaminated area immediately if:
- Breathing becomes difficult.
- Dizziness or other distress occurs.
- You taste or smell a contaminant.
- You feel irritation of the nose or throat.
- You are instructed to do so by responsible personnel.
If you have a beard, large sideburns, or similar physical characteristics that prevent direct contact
between your skin and the sealing surface of the facepiece, this device may not seal correctly with
your face (refer to NFPA 1500, Standard on Fire Department Occupational Safety and Health
Program, and ANSI Z88.2, Practices for Respiratory Protection). 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 negative pressure seal test before each use.
Individuals who wear eyeglasses must use the G1 spectacle kit to guarantee a correct fit. Ordinary
eyeglasses cannot be worn under the facepiece.
Do NOT use this device in explosive or flammable atmospheres.
Do NOT use this respirator, or air filtration cartridges/canisters for protection against exposure to
radiation. They may not supply sufficient protection.
The respirator can help decrease exposure to airborne biological agents, including the H1N1
(swine) flu virus, avian (bird) flu virus, other types of influenza, severe acute respiratory syndrome
(SARS), or other bacterial or viral biological agents, and the risk of influenza infection during a
pandemic. This respirator does NOT remove the risk of exposure, infection, illness, or death.
The respirator is certified by NIOSH to comply with the requirements specified for the designated
filter efficiency level. Applicable authorities have not, however, set a safe level of exposure to
biological agents. Therefore, the respirator may not prevent transmission of the influenza virus.

8
Safety Regulations
G1 Powered Air-Purifying Respirator (PAPR)
US
Refer to the Centers for Disease Control and Prevention (CDC) at www.cdc.gov for guidance about
the use of respirators to help decrease exposure to the H1N1 virus or other airborne biological
agents in community, home, and occupational settings. The CDC recommends fit testing, medical
evaluations, and training for optimal effectiveness when a respirator is used in a nonoccupational
setting. Failure to obey these preparatory actions can cause dangerous conditions. OSHA requires
that the use of respirators in an occupational setting be in accordance with a complete respiratory
protection program that includes correct size selection, training, and fit testing. For detailed infor-
mation about respiratory protection programs, contact OSHA or go to www.osha.gov.
The CDC recommends frequent hand washing and wearing gloves to help prevent the transmis-
sion of disease from exposure to contaminated surfaces.
The CDC recommends that you wash your hands immediately after removing the respirator.
Do NOT remove the respirator in a contaminated area. Think of the outer surface of the respirator
as contaminated at all times. Safety goggles that fit tightly or a full-facepiece respirator can help
prevent transmission of the influenza virus.
ALWAYS clean cartridge/canister-style respirators before use in accordance with the instructions
in this manual.
This respirator is NOT for use by (a) children or (b) people with a medical condition who may be
adversely affected by using it.
When filters are used in an application that makes sparks, make sure that the filters are protected
by a shield. Sparks can cause damage to filters and decrease the level of protection.
Do NOT remove the respirator until it and other protective clothing are decontaminated. Otherwise,
exposure to contaminants can occur. In CBRN applications, this includes exposure to CBRN
agents.
Do NOT replace the air filtration cartridge/canister in a contaminated area.
Obey the decontamination and disposal procedures set by the applicable authorities.
Make sure that there is no blockage of the air filtration cartridges/canisters.
The respirator has no user-serviceable parts except as instructed in this manual.
If the respirator falls to the ground during use, go out of the contaminated area immediately.
Examine the device for damage. If the device is damaged, contaminants can get into the filtration
system.
Failure to obey these warnings can result in serious injury or death.

9
Safety Regulations
G1 Powered Air-Purifying Respirator (PAPR)
US
1.5 CBRN Applications
WARNING!
Do NOT use this device without the correct training and a complete understanding of its limitations.
Misuse can prevent the respirator from supplying the necessary protection.
This respirator supplies LIMITED protection. The device is approved by NIOSH for respiratory
protection against atmospheres containing chemical, biological, radiological, and nuclear (CBRN)
warfare agents; however, it cannot protect against all possible warfare agents.
Use this device with the applicable personal protective equipment and clothing necessary to
supply protection against dermal hazards.
Wear impermeable protective clothing to prevent exposure to gases and vapors that can poison
by skin absorption.
Exposure to some CBRN agents may not show immediate effects, but can result in delayed impair-
ment, illness, or death.
CBRN agents may NOT be identified by smell or sight. Don the respirator before going into an area
that may contain a CBRN agent. Obey the procedures set by the applicable authorities.
Do NOT use this respirator for more than 8 hours after initial use in an atmosphere that contains
CBRN agents or more than 2 hours after initial use in an atmosphere that contains CBRN agents
in liquid or mist form. Otherwise, agent permeation can occur.
Failure to obey these warnings, in addition to all instructions and protective measures for CBRN
agents, can result in serious injury or death.
1.6 References
For more information about the use and performance standards for the respirator, consult the
following publications:
• ANSI Z88.2, Practices for Respiratory Protection. American National Standards Institute,
New York, NY, 2015.
• CAN/CSA-Z94.4, Selection, Use, and Care of Respirators. CSA Group, Toronto, Canada, 2011.
• ISO 2230, Rubber Products - Guidelines for Storage. International Organization for Standardiza-
tion, Geneva, Switzerland, 2002.
• NFPA 1500, Standard on Fire Department Occupational Safety and Health Program.
National Fire Protection Association, Quincy, MA, 2013.
• Title 29 CFR Part 1910, Occupational Safety and Health Standards. Superintendent of Documents,
US Government Printing Office, Washington, DC.
• Title 29 CFR Part 1910.134, Respiratory Protection Standard. Superintendent of Documents, US
Government Printing Office, Washington, DC.

10
Safety Regulations
G1 Powered Air-Purifying Respirator (PAPR)
US
1.7 Contact Information
For product concerns, 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:
1.8 Warranty
Express Warranty
MSA warrants the G1 Powered Air Purifying Respirator (PAPR) and its accessories to be free from
mechanical defects or faulty workmanship for a period of one (1) year from date of shipment, provided
it is maintained and used in accordance with MSA’s Instructions and/or recommendations. This
warranty does not apply to expendable or consumable parts whose normal life expectancy is less than
one (1) year such as, but not limited to, non-rechargeable batteries, and cartridges. Replacement
parts and repairs are warranted for ninety (90) days from the date of repair of the product or sale of
the replacement part, whichever occurs first. MSA shall be released from all obligations under this
warranty in the event repairs or modifications are made by persons other than its own or authorized
service personnel, or if the warranty claim results from product misuse, accident, abuse, or normal
wear and tear. No agent, employee or representative of MSA may bind MSA to any affirmation, repre-
sentation or modification of the warranty concerning the goods sold under this contract.
THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTEES, EXPRESSED, IMPLIED, OR STAT-
UTORY, AND IS STRICTLY LIMITED TO THE TERMS HEREOF:MSA SPECIFICALLY DISCLAIMS
ANY IMPLIED WARRANTY OF MERCHANTABILITY OR OF FITNESS FOR A PARTICULAR
PURPOSE.
Exclusive Remedy
It is expressly agreed that the Purchaser’s sole and exclusive remedy for breach of the above
warranty, for any tortious conduct of MSA, or for any other cause of action, shall be the repair and/or
replacement, at MSA’s option, of any equipment or parts thereof, that after examination by MSA are
proven to be defective. Replacement equipment and/or parts will be provided at no cost to thepur-
chaser, F.O.B. MSA’s plant. Failure of MSA to successfully repair any non-conforming product shall
not cause the remedy established hereby to fail of its essential purpose.
Exclusion of Consequential Damages
PURCHASER SPECIFICALLY UNDERSTANDS AND AGREES THAT UNDER NO CIRCUM-
STANCES WILL MSA BE LIABLE TO PURCHASER FOR ECONOMIC, SPECIAL, INCIDENTAL OR
CONSEQUENTIAL DAMAGES OR LOSSES OF ANY KIND WHATSOEVER, INCLUDING BUT NOT
LIMITED TO, LOSS OF ANTICIPATED PROFITS AND ANY OTHER LOSS CONCERNING THE
GOODS SOLD BY MSA. THIS EXCLUSION IS APPLICABLE TO CLAIMS FOR BREACH OF
WARRANTY, TORTIOUS CONDUCT OR ANY OTHER CAUSE OF ACTION AGAINST MSA.
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]

11
Description
G1 Powered Air-Purifying Respirator (PAPR)
US
2 Description
The G1 Powered Air-Purifying Respirator (PAPR), hereafter referred to as respirator or device, is for
use in atmospheres that are NOT immediately dangerous to life or health (IDLH).
The respirator has a battery-powered blower assembly that pulls contaminated air through air filtration
cartridges/canisters to purify it, then supplies the purified air to the facepiece for inhalation. Exhaled
air is released through the exhalation valve.
For information about approved configurations, refer to the G1 PAPR Approval Insert (PN 10192481).
2.1 G1 Facepiece
The facepiece is available in three sizes (small, medium,
large). The nosecup is available in two designs (CBRN and
non-CBRN) and three sizes (small, medium, 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 the
APR adapter, an opening in the facepiece connection lets
airflow bypass the inhalation 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.
2.2 APR Adapter
The APR adapter lets you install the respirator breathing
tube on the facepiece. The APR adapter connects to the
facepiece with a push-to-connect (PTC) connection and
disconnects from the facepiece with a release button. The
APR adapter has large Rd 40 threads that let you install the
respirator breathing tube quickly and tightly.
NOTE: The rubber neck strap (Model Number 7-2830-1)
is not approved for use with the 4-point black cloth head
harness (Model Number 7-3104-1).
The device has the following components:
• G1 facepiece
• APR adapter
• C420 respirator
• Air filtration cartridges/canisters
The device has the following optional component:
• G1 spectacle kit

12
Description
G1 Powered Air-Purifying Respirator (PAPR)
US
2.3 C420 Respirator
The C420 respirator is a blower-assisted, air-purifying respirator referred to as a powered air-purifying
respirator. The C420 respirator has a blower assembly, breathing tube, waist belt, battery, and airflow
indicator.
The blower assembly is a waist-mounted, battery-powered, motor that pulls breathable air through two
air filtration cartridges/canisters and supplies it to the user. There are two threaded inlet ports on the
front of the blower assembly for the attachment of cartridges/canisters, an outlet port on the top of the
blower assembly for the attachment of the breathing tube, and an ON/OFF power switch. The battery
compartment is on the bottom of the blower assembly.
The breathing tube attaches to the top of the blower
assembly and connects to the facepiece through the
APR adapter. Breathing tubes are available in two
lengths (30 and 36 in.).
The waist belt lets you attach the respirator to your waist
tightly. Waist belts are available in two lengths (60 and
70 in.).
Single-use and rechargeable batteries are available.
The single-use batteries are 6-volt lithium-sulfur dioxide
(Li-SO2). The rechargeable batteries are 4.8-volt
rechargeable nickel metal hydride (NiMH). An MSA
battery charger is included with the NiMH rechargeable
battery.
The airflow indicator shows that the minimum airflow for
safe usage is available. When the respirator is fully
assembled and powered on, it supplies constant filtered
airflow at a minimum flow rate of 115 liters per minute
(lpm).
2.4 Air Filtration Cartridges/Canisters
The air filtration cartridge/canister contains adsorbents and a filter that removes or neutralizes specific
contaminants.
CBRN Canister GME Cartridge HE Cartridge

13
Size Selection
G1 Powered Air-Purifying Respirator (PAPR)
US
2.5 G1 Spectacle Kit (Optional)
The G1 spectacle kit lets users mount eyeglasses inside the
facepiece. Individuals who wear eyeglasses must use the
G1 spectacle kit to guarantee a correct fit. Eyeglasses
cannot be worn under the facepiece without the G1 spec-
tacle kit.
3 Size Selection
NOTE: Individuals who wear eyeglasses must use the G1 spectacle kit to guarantee a correct fit. Ordi-
nary 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 that the correct respirator size is selected.
(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 respirator. Refer to Section 7 "Donning" for instructions.
(3) Do a negative pressure seal test. Refer to Section 7.3 "Testing the Negative Pressure Seal" for
instructions.
(4) If the respirator 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.
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.
For information about respirator fit tests, refer to ANSI Z88.2-1992, Practices for Respiratory Protec-
tion, and Title 1910.134, Respiratory Protection Standard,
In addition to regular respirator fit tests, do a qualitative or quantitative respirator fit test after repairs
or maintenance.
NOTE: The selection of a fit test method can have an effect on the maximum use concentration.
Use the instructions and adapter in a Quik Chek Kit (PN 805078) to do respirator fit testing.
3.1.1 Quantitative Test
For use in a CBRN application, a fit factor of at least 2000, based on ambient aerosol fit test methods
or equivalent, is necessary before any type of respirator is assigned to an individual.

14
Visual Examinations
G1 Powered Air-Purifying Respirator (PAPR)
US
3.1.2 Qualitative Test
Only validated protocols are acceptable. The respirator must pass a test designed to assess a fit factor
of at least 2000 with the blower assembly power off and at least 10000 with the blower assembly
power on.
4 Visual Examinations
WARNING!
Do NOT examine the respirator before it is decontaminated, cleaned, and disinfected if there is a
risk of exposure to contaminants. Obey the applicable decontamination procedures, clean and
disinfect the respirator, then examine it.
If the respirator shows any of the conditions listed in Section 4 "Visual Examinations", remove the
respirator from service and return it to an MSA trained repair technician.
Do NOT substitute, modify, add, or omit parts. Use only exact replacement parts in the configura-
tion specified by MSA.
Failure to obey these warnings can result in serious injury or death.
Do a visual inspection upon receipt, and before and after each use.
Examine the entire respirator after it is decontaminated, cleaned and disinfected.
4.1 All Components
Examine all components for deterioration, dirt, cracks, debris, tears, holes, stickiness, heat- or chem-
ical-related damage, or other signs of damage.
Make sure that the respirator is complete and assembled correctly. Refer to Section 6 "Preparing for
Use".
Do all of the following component-specific inspections.
4.2 G1 Facepiece
Examine the lens for cracks, scratches, deformation, or color changes.
Make sure that the facepiece rubber has a tight seal and is attached to the lens ring tightly.
Make sure that the exhalation valve is clean and operates easily. Make sure that the valve moves off
the seat and returns when released (from inside the facepiece).
Examine the facepiece inlet for damage. Make sure that the inhalation valve is in position.
Examine the nosecup to make sure that the check valves or air guides are in position. Make sure that
the nosecup is attached to the component housing tightly.
Examine the nosecup, inhalation port, inhalation valves, exhalation valves, and exhalation port for
dust, Kevlar fibers, and other debris. If necessary, use the instructions in Section 10 "Cleaning and
Disinfecting" to clean these components.
Make sure that the straps for the head harness are not torn, cut, worn, fraying, or missing buckles.
4.3 APR Adapter
Examine the APR adapter for cracks, scratches, deformation, or color changes.
Examine the adapter gasket (green), O-ring, and seal ring for wear or damage.
Remove the adapter cover to examine the exhalation valve. Make sure that the valve moves off the
seat and returns when released.
Examine the Rd 40 threads for damage.

15
Before Use
G1 Powered Air-Purifying Respirator (PAPR)
US
4.4 C420 Respirator
Make sure that the belt is not torn, cut, worn, fraying, or missing buckles.
Examine the blower assembly for cracks or damage. Make sure that all threads are in good condition.
Make sure that there are no loose objects rattling inside the blower assembly.
Make sure that the cap is installed tightly over the battery compartment.
Examine the breathing tube for cuts, holes, tears, cracks, or other signs of damage. Make sure that
all threads and couplings are in good condition.
Make sure that the handwheel on the breathing tube can move freely and is not damaged.
Make sure that all gaskets and seals are in position and in good condition.
4.5 Air Filtration Cartridges/Canisters
Examine the air filtration cartridge/canister for cracks, scratches, deformation, or color changes.
Examine the Rd 40 threads for damage.
Look at the label on the air filtration cartridge/canister to make sure that the shelf life has not expired.
Make sure that the cartridges/canisters are effective and approved for the contaminants in the envi-
ronment.
5 Before Use
5.1 Respirator Use Limitations
WARNING!
An approved professional must supply an applicable change-out schedule for air filtration
cartridges/canisters, unless the cartridge/canister has an end-of-service-life indicator. The change-
out schedule must include all factors that have an effect on respiratory protection, including work
practices and other conditions that are specific to the users' environment.
If this respirator is used for protection against substances that have poor warning properties, there
is no secondary method of notification about when to replace the air filtration cartridge/canister.
Obey additional precautions to prevent overexposure, such as a more conservative change-out
schedule or use of an SAR or SCBA.
Failure to obey these warnings can result in serious injury or death.
This is an approved PAPR ONLY when it is used in an approved configuration. For information about
approved configurations, refer to the G1 PAPR Approval Insert (PN 10192481).
NOTE: The rubber neck strap (Model Number 7-2830-1) is not approved for use with the 4-point black
cloth head harness (Model Number 7-3104-1).
Do not exceed the maximum use concentrations set by regulatory standards.
Users must comply with the following MSA respirator use limitations. Do not exceed the following
maximum use concentrations during use:
• 1000 times the exposure limit for the contaminants in the environment if a quantitative fit test is
used. Using a qualitative fit test can decrease the maximum use concentration.
• Immediately dangerous to life or health (IDLH) concentration for any contaminant in the environ-
ment.

16
Before Use
G1 Powered Air-Purifying Respirator (PAPR)
US
The following is a PARTIAL list of substances that have poor warning properties.
5.2 Exposure Limits
Refer to the applicable exposure limits from the following sources:
• American Conference of Governmental Industrial Hygienists (ACGIH)
• Occupational Safety and Health Administration (OSHA)
• National Institute for Occupational Safety and Health (NIOSH)
• American Industrial Hygiene Association (AIHA)
Contact MSA at 1-800-MSA-2222 for information.
5.3 Mixtures of Contaminants
WARNING!
If any one contaminant in a mixture is the same as or more than the IDLH concentration, the entire
mixture is IDLH. Do NOT use the respirator, except for escape when the respirator is used in a gas
mask configuration.
Failure to obey this warning can result in serious injury or death.
NIOSH approves of mixing the following contaminants: organic vapors, chlorine, chloride dioxide,
hydrogen sulfide, acid gases, ammonia, and carbon monoxide.
Particulates can be mixed with any other particulate or any gas or vapor for which the air filtration
cartridge/canister is approved.
This respirator can be used for protection against a mixture of contaminants in an environment at the
same time or against one contaminant then another (using the same air filtration cartridge/canister)
ONLY in the following conditions:
• The air filtration cartridge/canister is approved for all contaminants in the environment.
• Contaminants in the environment at the same time are less than the IDLH levels for the specific
contaminants.
Acrolein Nitric Acid
Aniline Nitro compounds:
Arsine - Nitrogen oxides
Bromine - Nitroglycerin
Carbon monoxide - Nitromethane
Diisocyanates Ozone
Dimethyl sulfate Phosgene
Hydrogen cyanide Phosphine
Hydrogen selenide Phosphorous trichloride
Methanol Stibine
Methyl bromide Sulfur chloride
Methyl chloride Urethane or other diisocyanate containing paints
Methylene chloride Vinyl chloride
Nickel carbonyl

17
Preparing for Use
G1 Powered Air-Purifying Respirator (PAPR)
US
5.4 Exposure Limits for Mixtures
ACGIH publishes the following information to calculate the threshold limit value (TLV) of a mixture:
First, use the following formula to calculate the total concentration of the chemical mixture (CMixture)
from the individual contaminant concentrations (C1, C2, C3...):
(CMixture) = C1+C2+C3…
Use the following formula to calculate the TLV of the mixture, where T1, T2, T3, ... are the individual
contaminant TLVs and C1, C2, C3... are the individual contaminant concentrations:
Use these equations ONLY if the contaminants in the environment are actually mixed. Some
substances do not mix and may be in the environment separately, for example, in pockets or at
different levels. In that case, use the lowest TLV of the substances in the environment to find the appli-
cable respirator category for protection against all contaminants in the environment.
6 Preparing for Use
WARNING!
Make sure that all respirator components with threads are installed correctly. Cross-threading can
cause a connection to feel tight, but does not supply a sufficient seal for protection.
Failure to obey this warning can result in serious injury or death.
Make sure that the device does not have any of the conditions listed in Section 4 "Visual Examina-
tions".
Make sure that there are no parts missing from the assembled device.
Make sure that the air filtration cartridges/canisters are approved for and effective against all contam-
inants in the environment.
Make sure that the device is in an approved configuration. For information about approved configura-
tions, refer to the G1 PAPR Approval Insert (PN 10192481).
Make sure that the head harness is in an approved configuration.
NOTE: The rubber neck strap (Model Number 7-2830-1) is not approved for use with the 4-point black
cloth head harness (Model Number 7-3104-1).
Before going into a contaminated area, use the following factors to make an estimate of the maximum
safe duration of use:
• The amount and type of contaminate in the air, and the capacity of the air filtration cartridge/
canister to absorb or neutralize the contaminant. An average airflow of approximately 2 cfm will
flow through each cartridge/canister during extended use.
• The number of airborne particles (dust) in the atmosphere.
• The charge contained in the battery.
• The physiological limits of the respirator user.
TMixture =C
Mixture
C1+C
2+C 3+ ....
T1T2T3

18
Preparing for Use
G1 Powered Air-Purifying Respirator (PAPR)
US
6.1 Installing the Waist Belt
WARNING!
Make sure that the waist belt is tight around your waist to keep the device in position during use.
Failure to obey this warning can result in serious injury or death.
(1) Put the belt through the male end of the buckle.
(2) Remove the male end of the buckle from the belt.
(3) Remove the keeper loop from the belt.
(4) Put the belt through the two belt loops on the back of
the blower assembly.

19
Preparing for Use
G1 Powered Air-Purifying Respirator (PAPR)
US
6.2 Installing the Battery
WARNING!
Do NOT use any battery that shows signs of damage, bulging, swelling, disfigurement, or liquid in the
plastic wrap.
Failure to obey this warning can result in serious injury or death.
6.2.1 Single-Use (Li-SO2) Batteries
WARNING!
Do NOT let single-use (Li-SO2) batteries fall to the ground or be damaged in any way that can cause
a rupture. Single-use (Li-SO2) batteries contain pressurized sulfur dioxide gas, which is toxic.
If you smell an odor like vinegar or rotten eggs from the single-use (Li-SO2) battery, there is possibly
a leakage of battery gas. Put on protective gloves before you touch the battery. Remove the battery.
Obey the instructions in Section 11.1 "Discarding Single-Use (Li-SO2) Batteries" to discard the
battery. Obey the instructions in Section 6.2 "Installing the Battery" to install a new battery.
Failure to obey these warnings can result in serious injury or death.
Use the black battery cap assembly supplied with the blower assembly. Each battery cap assembly
has a retaining lanyard to prevent loss of cap.
(5) Install the keeper loop on the belt.
(6) Install the male buckle on the belt.

20
Preparing for Use
G1 Powered Air-Purifying Respirator (PAPR)
US
6.2.2 Rechargeable (NiMH) Batteries
WARNING!
Do NOT let rechargeable (NiMH) batteries fall to the ground or be damaged in any way that can cause
a rupture.
If the battery is damaged, remove it. Obey the instructions in Section 11.3 "Discarding Rechargeable
(NiMH) Batteries" to discard the battery. Obey the instructions in Section 6.2 "Installing the Battery" to
install a new battery.
Do NOT use the rechargeable (NiMH) battery for more than 4 hours. Doing so can result in signifi-
cantly decreased airflow and permanent damage to the battery.
Do NOT let the rechargeable (NiMH) battery discharge fully.
Failure to obey these warnings can result in serious injury or death.
Before you use the rechargeable (NiMH) battery for the first time, or if the battery has not been used
for several months, do three 6-hour charge/4-hour discharge cycles to get the best battery perfor-
mance. Do the discharge cycles with the blower assembly operating in a nonhazardous environment
without the breathing tube or cartridges/canisters installed. Refer to Section 11.2 "Charging
Rechargeable (NiMH) Batteries" for instructions.
(1) Turn the black battery cap assembly counterclock-
wise to loosen and remove it.
(2) Put the split ring on the retaining lanyard through the
securing hole of the blower housing.
(3) Remove the black battery cap assembly.
Keep the black battery cap assembly for possible
future use.
(4) Put the split ring on the retaining lanyard for the green
battery cap assembly through the securing hole of the
blower housing.
(5) Install the green battery cap assembly, and turn it
clockwise to hand-tighten it.