See full instructions here.

Inspection Before Use:

1. Inspection before use
2. Check that the mask is the correct size.
3. Check that the mask is complete, correctly assembled and thoroughly cleaned.
4. Check the mask body, membranes, membrane seats and harness for wear, cuts, cracks, missing parts, and other defects.
5. Check that the appropriate filter is intact and installed properly.

Donning:

1. Remove any hood, glasses or ear protection from head.
2. Holding the mask in one hand, grab the strap buckle and pull on the head strap until the pad is tight against the mask.
3. Take out any twists or tangles.
4. Holding the strap buckle, pull the strap over your head and put it around your neck.
5. Let the mask hang on your chest.
6. Grab the pad with one hand and the filter with the other.
7. Hold the mask against your face.
8. Pull the pad over your head and place it on the crown of the head.

Adjusting the harness, single strap

1. Reach behind your neck and grab the free end of the harness strap.
2. Pull the free end away from the neck until buckle pops open.
3. Pull on the free end of the strap until the respirator seats comfortably on your face. 
4. Use your thumb and forefinger to squeeze the buckle shut. 
5. Wiggle the respirator until it seats comfortably. 

Adjusting the harness, cradle strap

1. Slacken the elastic straps.
2. Adjust the strap length so that the mask fits firmly and comfortably by pulling the strap ends.
3. Wiggle the mask to the face until you get a good fit. 

Fit check 

1. Use the pre-filter holder to check if the mask is tight.
2. Place the pre-filter holder to the filter.
3. Put the mask on. Place the palm of your hand lightly over the hole on the pre-filter holder to make it tight.

NOTE: Do not push so hard that the respirator’s shape is affected.

Take a deep breath and hold your breath for about 10 seconds. If the mask is tight, it will be pressed against your face. 

If any leakage is detected, check the inhalation and exhalation valves, adjust the straps of head harness or switch to alternative size of the respirator. Repeat the fit check until there is no leakage.

Maintenance:

Cleaning 

Sundström cleaning tissues SR 5226 are recommended for daily care. If the mask is heavily soiled, use a warm (up to +40 °C), mild soap solution and a soft brush, followed by rinsing with clean water and drying in air at room temperature. If necessary, spray the mask with 70 % ethanol or isopropanol solution for disinfection. Proceed as follows:

1. Remove the filter, the covers for the exhalation valves and the membranes, the inhalation membrane and the head harness. (Optional – The harness can be washed, but takes extra time to dry.) 
2. Clean as described above. Critical areas are the exhalation membranes and the membrane seats which must have clean and undamaged contact surfaces. 
3. Inspect all parts and replace with new parts as necessary. • Leave the mask to dry, and then assemble it. 

NOTE: Never use solvents for cleaning.

Storage 

The best way to store the mask, clean and dry, is in the Sundstrom storage box SR  230 or storage bag SR 339. Keep it away from direct sunlight or other sources of heat. 

Maintenance Schedule 

Recommended minimum requirements on maintenance routines so you will be certain that the equipment will always be in usable condition.

See Maintenance Schedule here.

Change Parts

Always use genuine Sundström parts. Do not modify the equipment. The use of non-genuine parts or modification of the equipment may reduce the protective function and put at risk the approvals received by the product.

To change the inhalation membrane

• Reach inside the respirator and gently pull out the inhalation membrane.
• Check the edge of the inhalation valve. Gently stretch the flap until it slips over the stud.

To change the exhalation membranes 

• The exhalation membranes are mounted on a dowel on the inside of the valve covers on each side of the mask body. The covers should be changed whenever the membranes are changed.
• Snap the valve covers off the membrane seats.
• Prise off the membranes. 
• Press the new membranes onto the dowels. Carefully check that the membranes are in contact with the membrane seats all round.
• Press the valve covers into place. A clicking sound indicates that the cover has snapped into place.

To change the head harness

• Detach the head harness by pushing the two connection points towards the filter attachment.
• Check that the straps are not twisted and snap on the new harness by putting each plastic swivel into the contoured slot and pulling it until it snaps in.