How to inspect, assemble, put on, and seal-test a respirator for low-pressure spray foam application
Versi-Foam Systems are professional foam dispensing systems that should be used under proper health and safety conditions. All Versi-Foam Systems are a low-pressure product with a dispensed pressure of 250 pounds per square inch.
Personal protective equipment that we suggest for Versi-Foam application:
- Chemical-resistant safety goggles
- Chemical-resistant protective clothing to prevent skin exposure
- Chemical-resistant nitrile gloves
- A NIOSH-approved respirator.
Types of respirators (01:02)
Your choice of respirator depends on the project conditions or the applicator's preference. Options include half mask respirators, full mask respirators, or powered air purifying respirators.
Half mask and full mask respirators should be used with organic vapor cartridges and particulate filters or P100 cartridges and filters. Full mask respirators provide more protection than half mask respirators. The face shield protects the face and eyes from irritants and contaminants.
A powered air purifying respirator, when used with an organic vapor cartridge, offers breathing-comfort from a battery-powered fan, which pulls air through filters and circulates air through the helmet and hood. Both half mask and full mask respirators require a fit test to ensure proper operation and protection.
Filters and cartridges (01:52)
Organic vapor cartridges and particulate filters should be changed on a regular basis. Once you have chosen a respirator, it is best to have a medical evaluation by a physician or a licensed healthcare professional to ensure you will be able to breathe correctly while wearing a respirator.
See OSHA (www.osha.gov) for information on:
- Fit-test procedures
- User seal-check procedures
- Respirator cleaning procedures
- Medical evaluations
Inspect respirator before use (02:34)
Carefully inspect your respirator before using it. If any parts are missing or damaged, replace those parts or replace the entire mask.
- Check the face piece to make sure it is in good condition without any holes or tears.
- Check the cartridge connectors to make sure they are not cracked and are fully inserted into the mask.
- Check all the valves to be sure they are present and in good condition. The valves should be lying flat without any distortion, tears, or holes.
- Check the head straps to be sure they have not lost their elasticity. Make sure the straps are not twisted.
- Be sure to use fresh filters and cartridges. Cartridges and filters should not be overused and need to be replaced from time to time.
Set up the respirator
- Snap the filter and filter cover onto the cartridge or the filter holder if no cartridge is used.
- Thread the cartridges or filter assemblies into the cartridge connectors on the face piece.
Now that you've inspected your respirator and installed the cartridges, you are ready to put it on.
Center the respirator on your face (04:00)
Begin by adjusting the respirator head straps and clips to their full outward position.
- With one hand holding the respirator, place your chin inside the chin cup and the top of the respirator over your nose.
- With your other hand, position the plastic straps, so they are centered on your head.
- Remove any slack in the upper straps by pulling the two end tabs back toward your ears. Do not tighten at this time.
- Fasten the bottom elastic straps behind your neck and under your hair.
- Remove any slack in the bottom straps by pulling the backend tabs toward the front. Do not tighten at this time.
- Tighten the upper head straps in small equal increments to ensure the top half of the respirator is tightened evenly and centered on your face.
- Tighten the lower head straps by pulling evenly on the end straps in the back of the respirator until the entire respirator is snug, comfortable, and centered on your face.
- Gently pull the respirator away from your face and maneuver it to assure it is centered, comfortable, and snug.
Test the seal (05:24)
Once you have your respirator on, you should perform a positive and negative pressure user seal check to assure the respirator is seated correctly and in good working order.
- Before performing seal checks, exhale vigorously.
- Perform a positive pressure seal check by placing the palm of your hand over the exhalation valve, so it is completely sealed, and exhale gently. If you have a good seal, the face piece will bulge out slightly.
- Perform a negative pressure seal check by placing the palm of each hand over the two cartridges or filters, so they are completely sealed, and inhale. Hold your breath for five seconds. If you have a good seal, the face piece will collapse.
If any air leaks are detected during either check, reposition the facepiece and readjust the head straps. Repeat the seal checks until a seal is obtained. Now that your respirator is in place, you are ready to begin using your Versi-Foam System.