Sundstrom SR 520 Gebrauchsanleitung Seite 16

studied. The breathing hose must be connected to the fan unit
equipped with filters. The above-atmospheric pressure gener-
ated in the head-top prevents particles and other pollutants
from being admitted into the breathing zone.
1.2 Applications
The equipments can be used as an alternative to filter respira-
tors in all situations in which these are recommended. This
applies particularly if the work is physically demanding, warm
or of long duration. When selecting the head-top, some of
the factors that should be taken into account are as follows:
• Types of pollutants
• Concentrations
• Work intensity
• Protection requirements in addition to respiratory protective
device.
The risk analysis should be carried by a person who has
suitable training and experience in the area.
1.3 Warnings/Limitations
Note that there can be national differences in the regulations
for use of respiratory protective equipment.
Warnings
The equipment must not be used
• If the fan is not running. In this abnormal situation, the
equipment will provide no protection. In addition, there is
risk of carbon dioxide quickly accumulating in the head top,
which would lead to oxygen deficiency.
• if the pollutants are unknown,
• in environments that are immediately dangerous to life and
health (IDLH),
• in environments where the ambient air is oxygen-enriched
air or does not have a normal oxygen content,
• if you find it difficult to breathe,
• if you can smell or taste the pollutants,
• if you experience dizziness, nausea or other discomfort.
Limitations
• The head-tops must not be used together with peel-offs or
head covers in potentially explosive atmosphere.
• If the face seal is not firmly in contact with the face, the
pressure necessary for maintaining the correct protection
factor will not be established.
• If the user is exposed to very high work intensity, negative
pressure may occur in the device during the inhalation
phase, which may involve the risk of leakage into the
head-top.
• The protection factor may be reduced if the equipment is
used in surroundings in which high wind speeds occur.
• The seal of the head-top against the face must be assured.
This may be difficult to achieve if the user has a beard or
sideboards.
• Be aware that the breathing hose might make a loop and
get caught up by something in your surrounding.
• Never lift or carry the equipment by the breathing hose.
2. Parts
2.1 Delivery check
Check that the equipment is complete in accordance with the
packing list, and undamaged.
Packing list
• Hood with breathing hose
• User instructions
• Cleaning tissue
16
2.2 Accessories / Spare parts
Part
O-ring for breathing hose. Fig. 1b
Set of valves
Sweatband
Protective film set *
Cleaning tissues SR 5226, box of 50
* Must not be used in potentially explosive atmosphere
3. Use
3.1 Installation
See also the user instructions for fan unit SR 500/SR 500 EX/
SR 700 or compressed air attachment SR 507 whichever is
used.
3.2 Donning
See also the user instructions for fan unit SR 500/SR 500 EX/
SR 700 or compressed air attachment SR 507 whichever is
used.
SR 520
• Adjust the head harness by adjusting the length of the Velcro
strap. This is important for ensuring a good fit. Fig. 3.
• Grip the hose mounting with one hand and, with the other,
hold the strap in the lower part of the hood. Fig. 4.
• Put your chin into the hood. Fig. 5.
• Keep hold of the strap and pull the hood over your head with
the hand holding the hose mounting.
• Adjust the hood so that it seals all the way round your face
and so that it fits firmly and comfortably. Fig. 6.
• To ensure a perfect fit, it may be necessary to take off the
hood and adjust the head harness.
• Make sure that the breathing hose runs along your back and
is not twisted. Fig. 7.
SR 530
• Adjust the head harness by adjusting the length of the Velcro
strap. Fig. 3.
• Hold the hood upside down. Grip each side of the hood
opening with one hand. Fig. 8.
• In one movement, put your chin in and then the rest of your
head into the hood. Fig. 9.
• With the same grip, pull the hood down so that the head
harness fits firmly and comfortably around your head.
• Adjust the neck size of the hood by means of the elastic
neck strap. Fig. 10.
• Make sure that the breathing hose runs along your back and
is not twisted. Fig. 7.
3.3 Doffing
See the user instructions for fan unit SR 500/SR 500 EX/
SR 700 or compressed air attachment SR 507 whichever is used.
4. Maintenance
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.
4.1 Cleaning
Sundström cleaning tissues SR 5226 are recommended for
daily care.
If the equipment is more heavily fouled, use a soft brush or
sponge moistened with a solution of water and dishwashing
detergent or the like. Rinse the equipment and leave it to dry.
If necessary, spray the hood with 70 % ethanol or isopropanol
solution for disinfection.
NOTE! Never use a solvent for cleaning.
Ordering No.
R06-0202
R06-0201
R06-0203
T06-0201
H09-0401