SR700 Particle PAPR — How to
Copyright © 2013 by The S.E.A. Group
7
Make sure the SR500, headpiece and filters are
intact and correctly assembled.
Switch on the PAPR.
Place the entire facepiece or headpiece into the
test bag and seal off by closing your hand around
both the bag and the breathing hose.
IMPORTANT! Do not in any way obstruct,
squeeze together or bend the breathing hose.
With the other hand, hold the flow tube up
vertically from the bag.
The floating ball in the tube should be on the line
marked 175 or slightly above it.
175 l/min
If the floating ball isn’t on or above the line,
shake it a few times, and make sure the tube is
completely vertical.
If it seems impossible to get a successful
measurement, call your supervisor. Do not use
the equipment.
Now test the alarm functions of the SR500.
With the fan unit running, and still sealing off
around the breathing hose, block the exhaust of
the test flow tube with your thumb or hand.
The following should happen:
•
The red triangle should flash on the
display.
•
A pulsing beep should sound.
+rapid continual beep pulses
