Air source
Locate the source of supplied air, from a breathing air compressor in a clean air environment. Locate the
air source far enough from your work site to ensure the air remains contaminant-free. Always use an inlet
fi lter on your air source.
Use suitable after-cooler/dryers with fi lters, and carbon monoxide monitors and alarms as necessary to
assure clean, breathable air at all times.
The air should be regularly sampled to be sure that it meets Grade D requirements.
Breathing air pressure
Air pressure must be continually monitored at the point-of-attachment while operating this respirator.
A reliable air pressure gauge must be present to permit you to continually monitor the pressure during
actual respirator operation.
DANGER failure to supply the minimum required pressure at the point-of-attachment for your hose length
and type will reduce airfl ow and may expose you to life threatening conditions, diseases or death.
The Breathing Air Pressure Table (see page 2) defi nes the air pressure ranges necessary to provide
Respirex Simplair supplied respirators with air that falls within the required range of 6 - 10 cfm (170 - 280 L/
min) mass fl ow (Ref. 42 CFR, Part 84, Subpart J).
Make sure you understand the information in the Breathing Air Pressure Table before using this respirator.
Set the air pressure at the point-of-attachment within the required pressure range and air supply hose type
and length.
Breathing air supply hoses and hoses fi ttings
NIOSH approved Respirex air supply hose(s) MUST be used between the breathing tube connection fi tting
on the wearer’s belt and the point-of-attachment to the air supply.
NIOSH approved Respirex quick-disconnect fi ttings MUST be used to connect Respirex hose lengths
together. Total connected hose length and number of hoses MUST be within the ranges specifi ed on the
Breathing Air Pressure Table (see page 2) and the respirator’s NIOSH approval label (see page 1).
9
