•
Don the blower unit according to its instructions.
•
Switch on the blower device, then check adequate air fl ow (see Instructions for Use of the blower
unit).
•
Don the hood so that the visor comes in front of the face and the breathing hose trails freely
down the back and is not kinked.
•
Flowhood 1 (half hood): Tighten by arranging the face seal under the chin (draw at the loop).
•
Flowhood 2 (full hood): Tighten by adjusting the drawstring around the neck.
•
Check that hair or clothing is not trapped in the seal.
4. Maintenance and storage
•
Store in a cool and dry place (-10 °C...+50 °C, max. 75 % RH), protected from direct sunlight
and any impurities.
•
Clean with a damp cloth or sponge (be careful not to scratch the visor). Use lukewarm water and
mild detergent (neutral, pH 6-8) (e.g. washing-up liquid). Let dry.
•
Do not use solvents (e.g. acetone, turpentine), hot water or bleaching agents (perborate,
percarbonate). Never clean with compressed air or compressed water.
•
Check that the hood and breathing hose are undamaged and replace damaged items.
•
Always use original spare parts.
Replacing the breathing hose
•
Undo the nut found on the rear innerhood (with Flowhood 2, also remove the plastic washer) and
remove the hose.
•
Insert the new hose into the hood (with Flowhood 2, also fi t the washer) and tighten the nut.
•
Check that both layers of hood fabric are trapped under the nut.
Replacing the exhalation valve
•
Pull the valve cover from the valve and remove the disc.
•
Insert a new disc making sure that it lies fl at on the seat.
•
Align the valve cover with the slots and snap it into place.
5. Selection of blower-assisted breathing protector equipped with fi lter
See Instructions for Use of the blower device to be used.
Type of protective device
Power-assisted face shield with
particle fi lter
TH1P
TH2P (Flowhood 1)
TH3P (Flowhood 2)
Device with combined fi lter
Power-assisted face shield
with gas fi lter *)
TH1 gas fi lter class 1 or 2
TH2 gas fi lter class 1 or 2
TH3 gas fi lter class 1 or 2
*) Provided that the maximum permissible detrimental gas concentration for the gas fi lter is not exceeded.
For power-assisted fi ltering devices with gas fi lter, concentration must not exceed 0.05 vol.% in gas fi lter
class 1 and 0.1 vol.% in gas fi lter class 2 and 0.5 vol.% in gas fi lter class 3.
**) If national guidelines exist: in all cases the lowest value applies.
Multiples of threshold
concentration **)
APF (Assigned protection factor)
BS 4275 (GB)
BGR 190 -
ZH1/701 (DE)
10
5
20
20
40
100
The specifi ed multiples of threshold value for the gas or particle fi lters are
given separately, but in all cases the lowest value applies.
10
5
20
20
40
100
* * * * * * * * * * * * * * * * *
Remarks, limitations
"Open" facepieces, such as helmets or hoods,
do not provide suffi cient protection in case of
breakdown or inferior output of the blower.
Therefore, devices of class TH1 must never be
used against carcinogenic, very poisonous or
radioactive gases and vapours.
For devices with combined fi lter apply the
relevant limitations of gas and particle fi lters.
15