Sundstrom SR 500 Mode D'emploi page 36

EN
Contents
1. General information
2. Use
3. Technical specification
4. Maintenance
5. Parts list
6. Key to symbols
7. Worn-out products
8. Approvals
The SR 500 should be used together with filters and a
head top - hood, visor, welding shield or full face mask
- which must be obtained separately. Before use, both
these user instructions and those for the filter and
head top must be carefully studied.
1. General information
The SR 500 is a battery-powered fan unit that,
together with filters and an approved head top, is
included in the Sundström fan-assisted respiratory
protective device systems conforming to EN
12941/12942:1998 and to Sundström Powered Air
Purifying Respirator (PAPR) system conforming
to AS/NZS 1716:2003. The fan unit is to be equipped
with filters, and the filtered air is supplied through a
breathing hose to the head top. The above-atmos-
pheric pressure then generated prevents pollutants
from the surroundings from penetrating into the head
top. 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
respirators 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. See
also sections 1.3 Warnings/limitations and 2.4 Filters.
36
Fan unit SR 500
1.2 System description
Fig. 1.
Fan unit
The characteristics of the SR 500 are as follows:
• The battery is of lithium ion type that is good for at
least 500 charging cycles.
• Two battery capacity alternatives, i.e. 2.2 Ah or
3.6 Ah.
• The battery need not be discharged before it is
charged.
• The charging time is 1,5-2 hours.
• To be used with two filters/combined filters.
• Operating time of up to 13 hours.
• The same control is used for starting, stopping and
selection of operating status
• Display with the following symbols
• Small fan symbol that lights up with a green
light during normal operation.
• Bigger fan symbol that lights up with a green
light during boosted operation
• Triangle that lights up with a red light if the air
flow should cease or if the filters are clogged.
• Battery symbol that lights up with a yellow light
when the battery capacity is low.
• 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.
• Can be used together with a hood, visor or full face
mask.
Air flow rates
On normal operation, the fan delivers at least 175 l/
min, and on boosted operation, at least 225 l/min. The
automatic flow control system of the fan unit maintains
these flows constant throughout the operating time.
Warning system/alarm signals
• In the event of air flow obstructions
If the air flow should drop below the preselected
value (175 or 225 l/min), this is indicated in the
following way:
• A pulsating sound signal will be heard.
• The built-in vibrator will be activated.
• The red warning triangle of the display will
flash.
Action: Immediately interrupt the work, leave the
area, and inspect the equipment.