Maintenance Schedule - Sundstrom SR 500 EX Gebrauchsanleitung

Check of the minimum flow - MMDF
• Check that the fan unit is complete, correctly
mounted, thoroughly cleaned and undamaged.
• Start the fan unit.
• Place the head top in the flow-meter.
• Grip the lower part of the bag to seal around the
upper attachment of the breathing hose. Fig. 19.
Note! You must not grip around the breathing
hose itself as this would either obstruct the air
flow or cause failure to achieve a proper seal.
• Grip the flow meter tube with the other hand so that the
tube points vertically upwards from the bag. Fig. 19.
• Read the position of the ball in the tube. This
should hover at a level with or slightly above the
upper marking on the tube, (175 l/min). Fig. 20.
If minimum flow is not achieved, check that
- the flow meter is held upright,
- the ball moves freely,
- the bag seals well around the hose.
Checking the alarms
The equipment is designed to provide a warning if the
air flow is obstructed. This alarm function should be
checked in conjunction with the flow check before the
equipment is used. Proceed as follows:
• Provoke an air flow stoppage by gripping the top
part of the bag or by shutting off the flow meter
outlet. Fig. 21.
• The fan unit should then initiate alarms by sound
and light signals.
• If the air is again allowed to flow, the alarm signals
will automatically cease after 10-15 seconds.
• Switch off the fan unit and remove the flow meter.
3.5 Donning
After the filters have been fitted, a performance check
has been carried out and the head top has been
connected, the equipment can be put on. Before
putting it on, read the user instructions for the head top.
• Take the fan unit on and adjust the belt so that the
fan unit is firmly and comfortably secured at the
back of your waist. Fig. 22.
• Start the fan by pressing the control button. See
also 2.6 above.
• Put the head top on.
• Make sure that the breathing hose runs along your
back and is not twisted. Fig. 22. Note that when a
full face mask is used, the hose should run along
your waist and up along the chest. Fig. 23.
3.6 Doffing
Leave the polluted area before taking the equipment off.
• Take off the head top.
• Switch off the fan.
• 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
maintenance 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
decontamination - proceed as follows:
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• 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. Preferably store the fan
unit with the plugs fitted. 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
Inspection/lubrication
•
of battery gasket
•
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 modification
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 preferably
be changed in accordance with a predetermined
schedule. If no measurements are made on site, the gas
filters should be changed once a week or more frequently
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 filter holder. Fig. 24.
• 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
underside of the adapter at the semicircular
gap. Fig. 25.
o Then prise out the filter. Fig. 26.
• 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
filter adapter, in the joint between the particle
and gas filters.
o Then prise out the filter. Fig. 27.
Fit new filters/combined filters. See 3.2 d.
After use Annually
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