(4)
Thread the motor-blower coupling nut into the facepiece until resistance is
encountered.
NOTE:
Continue tightening the coupling nut an additional 60 degrees (the distance
of two notches on the coupling nut) into the facepiece.
(5)
If attached, unthread the filter from the motor-blower assembly.
(6)
Check that there is a gasket in the motor-blower housing.
NOTE:
The gasket is necessary so that the filter and motor-blower will seal.
WARNING!
Do not use the respirator if the spider gasket in the facepiece inhalation housing or the gasket in the motor-blower housing is
missing or appears damaged.
Failure to follow this warning will permit the contaminant to be drawn into the respirator and inhaled, resulting in
serious respiratory injury or death.
(7)
Thread the filter into the motor blower and hand-tighten.
12
OptimAir® MM PAPR
4 Respirator Assembly
US