CEN-PAQ
7
4.3 CHECK CYLINDER
PRESSURE / LEAK TEST
1. Slowly open cylinder valve fully,
check pressure gauge to ensure that the
cylinder is at least 80% FULL:
For 200 bar cylinders - 160 bar.
For 300 bar cylinders - 240 bar.
2. Close cylinder valve and time for
one minute, observing pressure gauge.
The reading must not fall by more than
10 bar in this time.
4.4 WHISTLE TEST
1. Open bypass knob slightly to vent
air from system. Check that the whistle
sounds clearly at between 63 and 73 bar.
When all air has been released, close
bypass.
4.5 FIT CLEAN FACEMASK
1. Check that orange O-ring on
demand valve outlet is clean and in good
condition.
2. Fit demand valve to facemask,
checking that coupling is secure by
rotating valve back and forth.
4.6 CHECK APPARATUS
1. Slacken all straps and check
apparatus to ensure that it is clean and in
good condition.
2. Stow facemask in pouch.
3. Apparatus is now ready for use.
4. If apparatus fails test DO NOT
USE. Attach explanatory note to
apparatus and return for servicing.