35
Fan unit SR 500
EN
1. General information
2. Technical specification
3. Use
4. Maintenance
5. Parts list
6. Key to symbols
7. Worn-out products
8. Approvals
1. General information
The SR 500 is a battery-powered fan unit that, together
with filters and head top, is included in the Sundström
fan-assisted respiratory protective device systems
conforming to EN 12941 or EN 12942 and to Sund-
ström Powered Air Purifying Respirator (PAPR) system
conforming to AS/NZS 1716:2012.
Before use, both these user instructions and those for
the filter and head top must be carefully studied.
The fan unit is to be equipped with filters, and the filte-
red air is supplied through a breathing hose to the head
top.
The above-atmospheric pressure then generated pre-
vents pollutants from the surroundings from penetra-
ting into the head top.
Use of a respirator must be part of a respiratory protec-
tion program. For advice see EN 529:2005 or AS/NZS
1715:2009.
The guidance contained in these standards highlights
important aspects of a respiratory protective device
program but does not replace national or local
regulations.
If you feel uncertain about the selection and care of the
equipment, consult your work supervisor or get in
touch with the sales outlet. You are also welcome to get
in touch with the Technical Service Department at
Sundström Safety AB.
1.1 Applications
The SR 500 can be used as an alternative to filter respi-
rators in all situations for which these are recommended.
This applies particularly to work that is hard, warm or of
long-duration.
When selecting filters and head top, the following are
some of the factors that must be taken into account:
• Possible occurrence of explosive atmosphere
• 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.
1.2 System description
Fan unit
The characteristics of the SR 500 are as follows:
• Operating time of up to 13 hours.
• The battery is of lithium ion type that is good for at
least 500 charging cycles.
• The same control is used for starting, stopping and
selection of operating status.
• Display with clear symbols.
• Initiates an alarm by vibration and sound/light signals
in the event of an obstruction in the air flow.
• Equipped with automatic air flow control with
compensation for air pressure and temperature.
• To be used with two filters/combined filters.
• Can be used together with a hood, visor, welding
shield, half mask, full face mask, helmet with visor or
welding shield together with helmet with visor.
Filters
See 3.4
Breathing hose
The breathing hose is not included with the fan unit but
is supplied with the relevant head top.
The breathing hose for half mask and full face mask is
purchased separately.
Head top
The choice of head top depends on the working
environment, work intensity and the required protection
factor. The following head tops are available for the SR
500:
• Class TH3 hood, model number SR 520.
• Class TH3 hood, model number SR 530.
• Class TH3 hood, model number SR 561.
• Class TH3 hood, model number SR 562.
• Class TH3 visor, model number SR 540.
• Class TH3 welding shield, model number SR 590.
• Class TM3 full face mask, model number SR 200.
• Class TM3 half mask, model number SR 900.
• Class TH3 helmet with visor, model number SR 580.
• Class TH3 weldning shield together with helmet with
visor, model number SR 584/SR 580.
• Class TH3 gold-plated shield together with helmet
with visor, model number SR 587/SR 580.
• Class TH3 shield 2/3, EN 3 together with helmet with
visor, model number SR 588-1/SR 580.
• Class TH3 shield 2/3, EN 5 together with helmet with
visor, model number SR 588-2/SR 580.
1.3 Warnings/limitations
Warnings
The equipment must not be used
• In the power-off state. In this abnormal situation a
rapid build-up of carbon dioxide and depletion of
oxygen may occur in the head top and no protection
is given.
• If the surrounding air does not have a normal oxygen
content.
• If the pollutants are unknown.
• In environments that are immediately dangerous to
life and health (IDLH).
• With oxygen or oxygen-enriched air.
• 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 SR 500 must always be used with two particle
filters or two combined filters or a combination of
two gas filters of the same type and two particle
filters.
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