Sundstrom SR 500 Consignes D'utilisation page 39

• Start the fan unit.
• Put the head top on.
• Make sure that the breathing hose runs along your
back and is not twisted. Fig. 33.
Note that when a full face mask is used, the hose should
run along your waist and up along the chest. Fig. 34.
When a half mask is used, the hose should run along
your back and over your shoulders. Hose SR 951, see
fig. 35. Hose SR 952, see fig. 36.
3.6 Doffing
Leave the polluted area before taking the equipment off.
• Take off the head top.
• Switch off the fan unit.
• Release the belt and remove the fan unit.
After use, the equipment must be cleaned and inspected.
See 4 Maintenance.
4. Maintenance
The person who is responsible for cleaning and mainte-
nance of the equipment must have suitable training and
be well acquainted with work of this type.
4.1 Cleaning
Sundström cleaning tissue SR 5226 are recommended
for daily care. At more thorough cleaning or decontami-
nation - proceed as follows:
• Assemble the plug kit. See 3.2 e.
• 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 fan unit with 70 % ethanol or
isopropanol solution for disinfection.
NOTE! Never use a solvent for cleaning.
4.2 Storage
After cleaning, store the equipment in a dry and clean
place at room temperature. Avoid exposing it to direct
sunlight. The flow meter can be turned inside out and
can be used as a storage bag for the head top.
4.3 Maintenance schedule
Recommended minimum requirements on maintenance
routines so you will be certain that the equipment will
always be in usable condition.
Before
use
•
Visual inspection
•
Performance check
Cleaning
Change of fan gaskets
4.4 Change parts
Always use genuine Sundström parts. Do not modify the
equipment. The use of non-genuine parts or modifica-
tion of the equipment may reduce the protective function
and put at risk the approvals received by the product.
4.4.1 To change the particle filters/
gas filters/combined filters
Change the particle filters at the latest when they are
clogged. The fan senses when this has occurred and
provides a warning as described in 3.3 under the
heading Operation/performance. The gas filters should
After Annually
use
•
•
•
•
preferably be changed in accordance with a predetermi-
ned schedule. If no measurements are made on site, the
gas filters should be changed once a week or more fre-
quently if the pollutants can be smelt or tasted in the
head top.
Bear in mind that both filters/combined filters must be
changed at the same time and must be of the same type
and class. Proceed as follows:
• Switch off the fan unit.
• Unscrew the filter/combined filter.
• Release the pre-filter holder. Fig. 37.
• Change the pre-filter in its holder. Clean as
necessary.
• To release the particle filter SR 510 from the
adapter, proceed as follows:
o Grip the filter with one hand.
o Place the thumb of the other hand on the under-
side of the adapter at the semicircular gap.
Fig. 38.
o Then prise out the filter. Fig. 39.
• To release the particle filter SR 510 from the gas
filter, proceed as follows:
o Grip the gas filter with one hand.
o Insert a coin or some other flat object, e.g. the fil-
ter adapter, in the joint between the particle and
gas filters.
o Then prise out the filter. Fig. 40.
• Fit new filters/combined filters. See 3.2 d.
4.4.2 To change the gaskets
The gaskets in the filter mountings of the fan unit prevent
polluted air being drawn into the fan unit. They must be
changed once a year or more frequently if wear or age-
ing is detected. Proceed as follows:
• Switch off the fan unit.
• Screw out the filters.
• The gasket has a groove all round and is fitted on a
flange below the threads in the filter mounting. Fig. 41.
• Remove the old gasket.
• Fit the new gasket onto the flange. Check that the
gasket is in place all round.
5. Technical specification
Air flow rate
During normal operation, the air flow rate is at least 175
l/min, which is the manufacturer's recommended mini-
mum flow rate or MMDF.
On boosted operation, the air flow rate is up to 240 l/min.
The automatic flow control system of the fan unit main-
tains these flows constant throughout the operating time.
Batteries
STD, Standard, 14.4 V, 2.25 Ah, lithium-ion.
HD, Heavy Duty, 14.4 V, 3.5 Ah, lithium-ion.
• The charging time for the STD battery is about 1.5 h.
• The charging time for the HD battery is about 2 h.
Operating times
The operating times may vary with the temperature, and
the condition of the battery and filters.
The table below gives an indication of the expected ope-
rating times under ideal conditions.
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