Key To Symbols; Technical Specification - Sundstrom SR 520 Gebrauchsanleitung

• Remove the peel-offs from the new visor.
• Secure the new visor first to the fixed mounting and then to
the over-centre mounting.
• Tension the visor by moving the lever downwards as far as
it will go. Fig. 21.
• Check that the visor is firmly in contact with the visor opening
seal all round.
• Fit the closing panels by pushing them into place with your
fingers. A clicking sound indicates that they are in place.
Fig. 22.
4.4.3 To change the face seal on the SR 540 EX
The plastic frame of the face seal is provided with a groove (Fig.
23) into which the visor unit frame fits (Fig. 24). The frame is
locked in position by means of two pins - one at each end - that
fit into holes in the visor unit. The ends of the face seal fabric
are provided with hooks that are secured to the head harness.
Proceed as follows:
• Release the hooks from the head harness. Fig. 25.
• Release the face seal by pulling its frame so that its pins are
released from the visor unit holes. Fig. 26.
• Remove the face seal.
• Thread the new face seal over the visor unit flange, with the
centre markings in line with one another. Fig. 27.
• Press the face seal frame down so that the pins drop into
the visor unit holes. A clicking sound indicates that they are
in place. Fig. 28.
• Secure the hooks to the head harness in the place where
the sweatband is relieved. Fig. 25.
4.4.4 To change the sweatband
SR 520/SR 530
The sweatband is secured to the forehead strap by double-
sided adhesive tape. Proceed as follows:
• Pick away one end of the sweatband so that it is removed
together with the tape.
• Pull the sweatband off.
• Remove the protective paper and fit the new sweatband.
SR 540 EX
The sweatband is secured to the forehead strap by means of
Velcro tape. Proceed as follows:
• Release the face seal hooks from the head harness. Fig. 25.
• Pull the sweatband off.
• Fit the Velcro strip with the ruffled side towards the forehead
strap and with the relief upwards.
• Secure the hooks to the head harness where a relief has
been made in the sweatband. Fig. 25.

5. Technical specification

Weights
Model
Hood SR 520
Hood SR 530
Face shield SR 540 EX
Materials
Plastic parts are marked with the material code and recycling
symbol.
Temperature range
• Storage temperature: from -20 °C to +40 °C at a relative
humidity below 90 %.
• Service temperature: from -10 °C to +55 °C at a relative
humidity below 90 %.
• Service temperature when used together with fan SR 500
EX is -10 °C to +40 °C.
24
Approx. weight
360 g
480 g
680 g
Shelf life
The equipment has a shelf life of 5 years from the date of
manufacture.

6. Key to symbols

See user instructions
Date wheel
CE approved by INSPEC International Limited
Relative humidity
<XX% RH
Temperature range
+XX°C
-XX°C
>XX+XX< Material designation
7. Approval
• Hoods SR 520 and SR 530 in combination with fan unit
SR 500/SR 500 EX or SR 700 are approved in accordance
with EN 12941:1998, class TH3.
• Face shield SR 540 EX in combination with fan unit
SR 500 EX is approved in accordance with EN 12941:1998,
class TH3.
• Hoods SR 520 and SR 530 and face shield SR 540 EX in
combination with fan SR 500 EX are approved in accor-
dance with ATEX Directive 2014/34/EU and IECEx Scheme.
• Hoods SR 520 and SR 530 and face shield 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.
• Hoods SR 520 and SR 530 and face shield SR 540 EX in
combination with SR 507 and air hose SR 360 are approved
in accordance with EN 14594:2005, class 3A.
Visors
• The PC visor for the SR 540 EX has been tested to class B,
high-speed particles, in accordance with EN 166:2001.
• The PETG visor for the SR 540 EX has been tested to class
F, high-speed particles, in accordance with EN 166:2001.
The PPE Regulation (EU) 2016/425 type approval has been
issued by Notified Body 0194. For the address, see the reverse
side of the user instructions.
The EU declaration of conformity is available at
www.srsafety.com ATEX-codes:
ATEX-codes:
II 2 G Ex ib IIA T3 Gb (SR 520 and SR 530).
II 2 G Ex ib IIB T3 Gb (SR 540 EX).
II 2 D Ex ib IIIC T195°C Db (SR 520, SR 530 and
SR 540 EX).
Key to ATEX markings:
Explosion protection mark.
II Equipment group (explosive atmospheres other than
mines with fire damp).
2 G Equipment category (2 = High level of protection for
Zone 1, G = Gas).