Copyright © 2016 by The S.E.A. Group

Fit the SR900 Sling the neck strap around your neck Copyright © 2016 by The S.E.A. Group

Fit the SR900 Sling the neck strap around your neck Start from the bottom: fit the mask to your chin Copyright © 2016 by The S.E.A. Group

Fit the SR900 Sling the neck strap around your neck Start from the bottom: fit the mask to your chin Cup the mask over your mouth and nose Copyright © 2016 by The S.E.A. Group

Fit the SR900 Pull the upper strap with the rubber patch up and over your head Make sure the upper strap sits on the crest of your head Copyright © 2016 by The S.E.A. Group

Fit the SR900 Unclip and adjust the buckle if you need to tighten or loosen the strap. Close the buckle. Even out tension by pulling the lower strap outwards a few times on both sides Copyright © 2016 by The S.E.A. Group

Fit a filter Make sure the filter holder is clean, intact and fitted with an inhalation membrane Copyright © 2016 by The S.E.A. Group

Fit a filter Match up the bayonet fitting of the filter holder to the one in the mask Copyright © 2016 by The S.E.A. Group

Fit a filter Insert the filter holder in the mask Give it a ¼ turn clockwise to lock it in position Reverse action to detach Copyright © 2016 by The S.E.A. Group

Fit a filter Make sure the filter is turned the correct way (arrows toward mask) Copyright © 2016 by The S.E.A. Group

Fit a filter Place filter in the filter holder Ease the filter securely into the groove Copyright © 2016 by The S.E.A. Group

Fit a filter Place a pre-filter in the pre-filter holder Copyright © 2016 by The S.E.A. Group

Fit a filter Snap the pre-filter holder with pre-filter onto the main filter Copyright © 2016 by The S.E.A. Group

Check for leakage Fit the fully assembled respirator to your face Copyright © 2016 by The S.E.A. Group

Check for leakage Cover the hole in the pre-filter holder with your hand Breathe in and hold your breath for 10 secs Copyright © 2016 by The S.E.A. Group

Check for leakage The mask should collapse slightly against your face and stay collapsed until you breathe out If the mask returns to its normal shape quickly, there could be a leakage problem: tell your supervisor Copyright © 2016 by The S.E.A. Group

Fit a hose Make sure the hose is clean, intact, and fitted with an O-ring and an inhalation membrane Single hose Twin hose Copyright © 2016 by The S.E.A. Group

Fit a hose Match up the bayonet fitting of the hose to the one in the mask Copyright © 2016 by The S.E.A. Group

Fit a hose Insert the hose in the mask Give it a ¼ turn clockwise to lock it in position Reverse action to detach Same action for single and twin hoses Copyright © 2016 by The S.E.A. Group

Fit the hose to a device Check O-ring at end of hose Line up lugs with slots in bayonet fitting Give it a ¼ turn to lock in position Reverse action to detach Same for all devices with bayonet fitting Copyright © 2016 by The S.E.A. Group

Connect SR900 to SR307 Adapter fits just like a filter Copyright © 2016 by The S.E.A. Group

Use the remote filter holder Fit the remote filter holder to the belt attachment. The square flange on the holder fits into the square hole on the attachment. Slide the two parts together until the locking tongue locks into position. Copyright © 2016 by The S.E.A. Group

Use the remote filter holder You may choose to wear the remote filter holder horizontally or vertically. Copyright © 2016 by The S.E.A. Group

Use the remote filter holder Horizontal or vertical, ensure that the hose connector is located on the upper side of the belt. Copyright © 2016 by The S.E.A. Group

Use the remote filter holder Assemble the filter holder, filters, pre-filter and pre-filter holder Copyright © 2016 by The S.E.A. Group

Use the remote filter holder Match up the bayonet fitting of the filter holder with the remote filter holder Insert the filter assembly into the remote filter holder Give it a ¼ turn clockwise to lock it in position Reverse the action to detach Copyright © 2016 by The S.E.A. Group

Use the remote filter holder The remote filter holder lets you wear the filter around your back on a waist belt. The single hose is worn on either side of the body The twin hose is worn on both sides of the neck Copyright © 2016 by The S.E.A. Group

Prepare for welding Slip a protective cover over the hose. Available for both the single and twin hose If desired, secure with Velcro straps Copyright © 2016 by The S.E.A. Group

Prepare for welding Fit the spark-catching mesh IN FRONT of the pre-filter in the pre-filter holder Copyright © 2016 by The S.E.A. Group

Prepare for welding The SR900 is ready for welding Copyright © 2016 by The S.E.A. Group

Quick clean Use warm soapy water and a clean soft cloth, or a Sundström cleaning tissue Inspect and wipe the outside of the mask You can leave the head strap on Check that there are no cracks or other damage Copyright © 2016 by The S.E.A. Group

Quick clean Use warm soapy water and a clean soft cloth, or a Sundström cleaning tissue Wipe the inside of the mask Pay special attention to ‘nooks and crannies’ inside the respirator Make sure the face rim and chin cup are clean Copyright © 2016 by The S.E.A. Group

Quick clean Replace the pre-filter with a new one and snap onto the main filter Copyright © 2016 by The S.E.A. Group

Quick clean Store the assembled respirator in a sealed container away from any contaminants Copyright © 2016 by The S.E.A. Group

Thorough clean First, perform a quick clean Remember to check for cracks or other damage Copyright © 2016 by The S.E.A. Group

Thorough clean Remove the filter holder (if using) and wipe the inside of the filter holder Pay special attention to the groove and the rim of the filter holder Copyright © 2016 by The S.E.A. Group

Thorough clean Remove each of the two exhalation valve caps on the mask Gently pull the membranes out Wipe the membranes and the valve seats clean Check for cracks or damage Reassemble Copyright © 2016 by The S.E.A. Group

Thorough clean Remove inhalation membrane from the filter holder or hose attachment Check for cracks or damage Clean membrane and valve seat Reassemble Make sure ALL valves are properly fitted. Draw a few deep breaths through assembled respirator Copyright © 2016 by The S.E.A. Group

Thorough clean Make sure O-rings are fitted and intact Copyright © 2016 by The S.E.A. Group

Thorough clean If head strap is very dirty, remove and clean Let dry before reattaching Tip: use a toothbrush to clean Copyright © 2016 by The S.E.A. Group

Thanks for watching Copyright © 2016 by The S.E.A. Group