Leak Tests - Dräger FPS 7000 RP Notice D'utilisation

Cleaning and disinfecting the drinking valve
● Prepare a cleaning solution: Completely dissolve 1 cleaning tablet
R 57 991 in 33.8 US fl.oz. (1 liter) of drinking water and fill it into
the drinking reservoir.
● Remove the mouthpiece and replace with the drain hose.
● Clean the mouthpiece in the cleaning solution. Rinse with running
drinking water and dry with oil-free compressed air (10 - 20 psi/
0.6 - 1.2 bar).
● Connect the drinking reservoir to the outside of the drinking valve
with a hose.
● Squeeze the cleaning solution from the reservoir through the
drinking valve until a small amount of the solution emerges from
the drain hose.
● Close off the drain hose with a hose clip.
● Allow the cleaning solution to act for 3 minutes.
● Open the hose clip and squeeze roughly half of the cleaning
solution out of the reservoir and through the drinking valve.
● Close the hose clip again and let the cleaning solution act for
3 minutes again.
● Open the hose clip and squeeze the remaining cleaning solution
through the drinking valve.
● Fill the drinking reservoir with clear drinking water.
● Squeeze the water out of the reservoir and through the drinking
valve.
● Disconnect the drinking reservoir from the hose.
● Using a compressed air gun, blow oil-free compressed air (10 -
20 psi/0.6 - 1.2 bar) into the hose until the drinking valve is dry.
● Dismantle the hose and the drain hose.
● Fit the mouthpiece onto the connection inside the facepiece and
make sure that it is properly fixed.
138

Leak tests

Carry out the leak test with a suitable test device (e. g. of the Testor
or Quaestor series)
(1) Checking leak tightness
● Moisten the face seal with water.
● Mount the Dräger FPS 7000 RP on the test head.
● Make sure that the face seal fits tightly onto all parts of the test
head. Inflate the test head if necessary.
● Adjust the connection piece with adapter tightly and produce a
negative pressure of 10 cm H
If the pressure drop is less than 1 cm H
Dräger FPS 7000 RP is considered leak-tight. If the Dräger
FPS 7000 RP leaks, continue with step (2).
(2) Leak test under water
● If fitted, remove the communication system.
● Immerse the test head including the Dräger FPS 7000 RP in the
water.
● Produce a positive pressure of approx. 10 cm H
● Slowly turn the test head under the water surface. Emerging
bubbles indicate leaks.
● Take the test head with the Dräger FPS 7000 RP out of the water,
repair the Dräger FPS 7000 RP or replace leaking components.
● Repeat the leak test (1).
After testing
● Press the button and pull the adapter from the connection piece.
● Remove the Dräger FPS 7000 RP from the test head and dry if
necessary.
Use Instructions for NIOSH-approved full facepieces
O (10 mbar).
2
O (1 mbar) per minute, the
2
O (10 mbar).
2