Sundstrom SR 540 EX User manual

2019-10-23
OI06H-6018 SR 540 EX 1
Operating instruction
SR 540 EX
Revision: 02

2019-10-23
OI06H-6018 SR 540 EX 2
General information
Instructions for use for SR 540 should be read before use.
When working in potentially explosive environments all parts of the equipment must be EX-approved
SR 540 EX shield can be used with the SR 507 compressed air attachment.
SR 540 EX shield can be used with the SR 500 EX fan unit in potentially explosive environments.
SR 540 EX face shield in combination with fan unit SR 500 EX are approved in accordance with
EN 12941:1998, class TH3.
SR 540 EX in combination with SR 507 and air hose SR 358 or SR 359 are approved in accordance with EN
14594:2005, class 3B.
SR 540 EX in combination with SR 507 and air hose SR 360 are approved in accordance with EN
14594:2005, class 3A.
Risk analysis should be carried by a person who has suitable training and experience in the area.

Unpacking SR 540 EX
Packing list:
• Face shield
• Breathing hose
• User instruction
• Cleaning tissue
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OI06H-6018 SR 540 EX 3

1. Assembly
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OI06H-6018 SR 540 EX 4
1.1 Check that the O-ring of
the hose is in place.
Check that the flat gasket is
ok and in place at the other
end.
1.2 Connect the end with the
flat gasket to the face shield.
Turn it clockwise about 1/8 of
a turn.
1.3 Connect the hose to the
fan unit and turn it clockwise
about 1/ 8 of a turn.

2. Performance check, minimum flow
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OI06H-6018 SR 540 EX 5
2.1 Check that the fan unit is
complete, correctly mounted,
thoroughly cleaned and
undamaged.
Connect the hose from the
face shield to the fan unit and
turn it about 1/8 of a turn
clockwise.
2.2 Turn the flow meter bag
inside out and the flow meter
appears.
2.3 Place the face shield in
the flow meter bag and start
the fan.
Grip the lower part of the bag
in order to seal around the
hose.
Grip around the measuring
tube and hold the tube
vertical.
The ball should now float
level with or just over the 175
l/min marking.
If the minimum flow is not
achieved, check that:
-The flow meter is vertical
-The ball moves freely
-The bag seals well around
the hose