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8.1.
Check device is functional and airtight
This test is necessary before the initial release of a device for use, after any parts are changed that can influence seals
and every six months.
To inspect function check that the connection to the air feed hose can be turned easily, the seals and couplings are in
perfect condition and the belts, breathing hose and air feed hose are not damaged. Check the mask in accordance with
the information brochure.
Put the device on, initially without the air feed hose, and check it is easy to breathe. Then connect the air feed hose with
the suction strainer/blower removed. The breathing resistance must increase in accordance with hose length. If the
increase is too great check that there are no foreign objects in the hose. There should also not be any strong smell;
othersie the inside of the hose must be cleaned. Then connect the suction strainer/blower to the air feed hose. The
breathing resistance must not increase noticeably, otherwise the suction strainer/blower must be replaced.
The seal test is carried out with the aid of a vacuum/overpressure pump and a certified fine manometer. It is expedient to
use the same equipment to check the seal on the mask. Use a suitable stopper to block the breathing hose on the mask
connector, connect the air feed hose and tighten the cap nut. Connect a hose coupler to the free end of the air feed hose
in place of the suction strainer to connect the pump and the fine manometer and righten this cap nut also. Then set a
vacuum or overpressure of 10mbar. Consult the information brochure for the test device. The value may not fall by more
than 1mbar within two minutes; otherwise check the hose connections and that the plug on the breathing hose is airtight.
If the seal is not achieved then defective parts must be replaced. The leak point can be found by holding the device under
water while it has an overpressure of 10mbar. The necessary equipment can be supplied on request.
8.2. Cleaning
All parts of the device must be thoroughly cleaned after each use. Do not use solvents!
The mask is cleaned in accordance with the information brochure.
The breathing hose with the connections is washed carefully in lukewarm water with EKASTU - cleaning fluid for masks
(order no. 266 962), using a soft bottle brush if necessary. After cleaning rinse thoroughly in clear water and dry in the air
or in a mask drying cabinet. Avoid radiating heat (e.g. the sun or a radiator) and temperatures over 60°C.
The belts, the suction strainer/blower and the fresh air light duty hose are rubbed with a soft cloth that has been soaked in
soap solution, then rubbed with a soft cloth that has been soaked in clear water and dried in the air. Avoid the penetration
of water into the suction strainer/blower. We recommend beginning cleaning at the suction strainer/blower.
The inside of the breathing hose must be cleaned before the first application, after any possible soiling of the inside and if
any smells occur in the air inhaled. To do this fix both ends of the hose at a height of at least 1 m. Fill with approx. 3/4 l of
lukewarm water with household dishwashing liquid (e.g. Pril, approximately 3 times stronger than for washing dishes) and
lift the hose, moving the liquid from one section to the other end until the water level reaches the edge. Repeat the
process in reverse, several times depending on the level of soiling. Then rinse with clear water in the same way two or
three times and hang the hose up to dry, preferably without looping.
8.3. Disinfection
The disinfection of the breathing hose with or without surplus valve and with the connector is carried out in a disinfection
bath with EKAST U -mask desinfection (order no. 266 942) after thorough cleaning. Please observe the notes on the use
of the disinfection agent. Rinse and dry thoroughly after removing the hose from the disinfection bath (see section above).
The mask is disinfected in accordance with the corresponding information brochure.
