Donning In Cold Weather; Testing The Negative Pressure Seal - MSA G1 Operating Manual

US
15. Make sure that the head harness straps do not cut into your ears.
16. Do a negative pressure seal test. Refer to
7.2

Donning in Cold Weather

Users must fully know how to don the respirator in cold weather before using this respirator in cold weather.
Use the instructions in 7.1 Donning in Normal Weather
breath (7.1 Donning in Normal
the harness straps in Step 10. If you do not, the facepiece can fog immediately.
To prevent the facepiece lens from fogging in cold weather, keep facial perspiration to a minimum before donning the
respirator.
7.3

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 repair technician.
• Do a negative pressure seal test before each use and before going into a toxic atmosphere.
Failure to follow these warnings can result in serious personal injury or death.
To make sure that the face-to-facepiece tightness is correct, do a negative pressure seal test before each use.
7.3.1 Single Port
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14. Make sure that the head harness tabs are flush to the face and not folded under the
facepiece seal or head harness straps.
7.3 Testing the Negative Pressure
to don the respirator. For donning in cold weather, you MUST hold your
Weather, Step 3) before you start to put the facepiece in position in Step 4 until after you tighten
1. Use the palm of your hand to seal the inlet to the air filtration cartridge/canister.
G1 APR Facepiece
Seal.
7 Donning