Sundstrom SR570 Installation and user guide

SR570 supplied-air face shield —How to Copyright © 2020 by The S.E.A. Group 1

SR570 supplied-air face shield —How to Copyright © 2020 by The S.E.A. Group 2
…assemble the SR570 head-top
BEFORE YOU START:
Check that the equipment is complete in
accordance with the packing list and has not
been damaged in transport.
Packing list:
1. Face shield 2. Breathing hose 3.Peel off
with clips 4. User instructions 5. Cleaning
tissue
Connect the breathing hose. Connect the hose to
the face shield, a click is heard when it is correct
attached. Connect the hose to the fan and then
turn 1/8 of a turn.
The performance check should be checked on
every occasion before the fan unit is used.
Start the fan unit. Place the head-top in the flow
meter. Grip the bag to seal around the breathing
hose. Grip the flow meter tube with the other
hand, the tube will point upwards from the bag.
Read the position of the ball in the tube. This
should hover at a level with or slightly above the
upper marking on the tube, (175 l/min).
If minimum flow is not achieved, check that
•the flow meter is held upright,
•the ball moves freely,
•the bag seals well around the hose.

SR570 supplied-air face shield —How to Copyright © 2020 by The S.E.A. Group 3
The equipment is designed to provide a warning
if the air flow is obstructed.
Provoke an air flow stoppage by gripping the top
part of the bag or by shutting off the flow meter
outlet. The fan unit should then initiate alarms
by sound, light and vibrations. In usage of
compressed air the control valve SR 348 will
warn by sound.
…put on the hood
If necessary, adjust the head harness. There are
a lot of adjustment options, see fig. 11. To adjust
the head harness easier, remove the head
harness from the face shield, see “To change the
head harness”.
Height adjustment.
A - how deep the head end up in the head part.
B - how high the face shield sits on the head. If
necessary, adjust for hearing protectors.
Angle adjustment between visor and head
harness.
C - the angle against the visor. Adjust if the face
is too close to the visor or if the hearing
protector not is sealed around the ear.
D - adjustment of the angle of the headband
around the back of the head.
Width adjustment of the head harness.
E- rough adjustment of the width of the head
harness.
F - the width of the head harness.
Raise the visor and put the face shield on.

SR570 supplied-air face shield —How to Copyright © 2020 by The S.E.A. Group 4
Lower the visor unit by pulling the face seal
down under your chin. A clicking sound indicates
that the visor unit has been lowered fully.
Insert a finger between your chin and the face
seal and run the finger along the contact surface
of the face seal all the way round to check that it
fits well against the face.
Make sure that the breathing hose runs along
your back and is not twisted.
Airflow deflector
The airflow can be directed towards visor or face
for optimal comfort.
…use the peel-off
Press the peel-off clip into the center of the side
of the visor.

SR570 supplied-air face shield —How to Copyright © 2020 by The S.E.A. Group 5
Secure the peel-off to the peel-off clips.
When mounting more peel-offs, mount them so
that the tabs end up different to ease the
removal.
…fit hearing protectors
It is possible to attach hearing protectors into
the slot connection on the sides of the face
shield.
If necessary, adjust the head harness of the face
shield to get the hearing protectors in correct
position.
…clean the SR570
The person who is responsible for cleaning and
maintenance of the equipment must have
suitable training and be well acquainted with
work of this type.
Sundström cleaning tissues SR 5226 are
recommended for daily care.
NOTE! Never use solvents for cleaning.
If the equipment is more heavily fouled, the
head harness seal, face seal and sweatband can
be put in a laundry bag and machine wash (max
40 °C). Other items can be washed in a
dishwasher (max 55°C).
If necessary, spray the face shield with 70 %
ethanol or isopropanol solution for disinfection.

SR570 supplied-air face shield —How to Copyright © 2020 by The S.E.A. Group 6
…store the head-top and parts
After cleaning, store the equipment in a dry and
clean place at room temperature. Store the face
shield with the visor in the fully raised or fully
lowered position. Avoid exposing it to direct
sunlight.
…schedule maintenance
Recommended minimum requirements on
maintenance routines so you will be certain that
the equipment will always be in usable
condition.
Before use
After use
Yearly
Visual inspection
O
O
O
Function check
O
O
Cleaning
O
O
New hose gasket
O
New exhal.
membrane
O
…change the visor
Release and remove the visor.
Fit the new visor. Start in the center.

SR570 supplied-air face shield —How to Copyright © 2020 by The S.E.A. Group 7
Make sure that the visor is centered and ends up
in the groove on the face shield.
Secure the visor on the right and left side.
Check that the visor is properly locked around
the edge of the face shield.
…change the exhalation valve
The exhalation membrane is mounted inside the
valve cover.
Remove the visor.

SR570 supplied-air face shield —How to Copyright © 2020 by The S.E.A. Group 8
Release and remove the valve cover.
Release and remove the membrane.
Press on the new membrane in right position
according to the picture. Carefully check that the
membrane is in contact with the valve seat all
round.
Press the valve cover into place.
Secure the valve cover on one side.

SR570 supplied-air face shield —How to Copyright © 2020 by The S.E.A. Group 9
Secure the valve cover on the other side
…change the face shield
Release the face seal hooks from the head
harness.
Push the face seal pins out and remove the face
seal.
Fit the new face seal. The marking on the face
seal and visor should be in front of each other.
Press the face seal all around the visor.

SR570 supplied-air face shield —How to Copyright © 2020 by The S.E.A. Group 10
Make sure that the face seal pins are fixed in the
visor.
Secure the face seal hooks into the head
harness.
…change the head harness seal
Release the face seal hooks from the head
harness.
Remove the forehead seal.

SR570 supplied-air face shield —How to Copyright © 2020 by The S.E.A. Group 11
Fit the new forehead seal. Press down the tabs
of the forehead seal in the socket on the face
shield.
Place the forehead seal so it fits between the
sockets of the sides of the head harness.
Check that head harness seal is mounted
according to the picture.
Secure the face seal hooks into the head
harness.

SR570 supplied-air face shield —How to Copyright © 2020 by The S.E.A. Group 12
…change the sweatband
Follow these instructions to change the
sweatband:
Remove the head harness from the face shield
by releasing the three fixing points. Remove the
sweatband.
Push in the head harness tongue into the new
sweatband. Note which way the sweatband is
turned!
Fit the sweatband into the head harness spikes.

SR570 supplied-air face shield —How to Copyright © 2020 by The S.E.A. Group 13
Fold the sweatband around the bandeau of the
head harness and fit the spikes in the holes.
Secure the two loose sockets of the sweatband
onto the head harness.
…change the head harness
Remove the head harness from the face
shield by releasing the three fixing points.

SR570 supplied-air face shield —How to Copyright © 2020 by The S.E.A. Group 14
Secure the both fixing points of the head
harness on the sides.
Secure the fixing point of the head harness in the
front. Check that the head harness is locked in
the fixing points of the face shield.
Adjust the head harness according to the How To
instructions in this manual.
…change the hose gaskets
Strip off old gasket rings and insert new ones at
both ends of the breathing hose.