Sundstrom SR 500 User manual

2020-04-23
OI06H-0118 SR 500 1
Operating instruction
SR 500
Revision: 04

General information
Instructions for use for SR 500 should be read before use.
The SR 500 is a battery-powered fan that is included, together with the filter and approved human interface, in
the Sundström respiratory protective system conforming to EN 12941/12942:1998 class TH3/TM3.
Available head tops for the SR 500 are listed in Instructions for use.
When selecting filters and head top, the following are some of the factors that must be taken into account:
▪Types of pollutants
▪Concentrations
▪Work load
▪Protection requirements in addition to respiratory protection
The risk analysis should be carried out by a person who has suitable training and experience in the area.
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Unpacking the SR 500
Packing list:
•Fan unit SR 500
•Battery, STD
•Battery charger SR 513
•Belt SR 508
•Particle filter SR 510 P3 R, 2x
•Filter adapters, SR 511, 2x
•Pre-filters, SR 221, 10x
•Pre-filter holders, SR 512, 2x
•Flow meter SR 356
•User instructions
•Cleaning tissue SR 5226
•Plug kit 2020-04-23
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1. Assembling the fan unit, battery
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1.1 On delivery, the battery is
fitted to the fan with a
protective tape over the
battery terminals. Release the
battery by placing the fan
upside down.
Fold back the cover/lock on
the battery a couple of
centimetres and then push
with the other thumb.
1.2 Remove the protective
tape.
1.3 Connect the power supply
lead to the battery charger.
Connect the battery to the
battery charger. Connect the
power supply lead of the
charger to the wall socket.
N.B. Mains voltage of 100-
240V.
Charging takes place
automatically in 3 steps
1. Orange LED
2. Yellow LED
3. Green LED
Push the battery back into the
battery compartment. Check
that the battery has been
pushed in as far as it will go
and that its lock is operative.

2. Assembly belt
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2.1 Assemble the belt by
pressing together the two
halves of the buckle.
2.2 The belt should be
mounted so that the belt is
pointing upwards.
Insert the three tongues of
the belt half into the slot in the
fan.
Begin to insert the upper
tongue and then turn the belt
into the fan.
2.3 Press down the three lips
locking the belt half.
2.4 Correctly mounted belt.

3. Particle filter
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3.1 Check that the gaskets in
the filter mounting of the fan
unit are in place and are in
good condition.
3.2 Snap the filter onto the
filter adapter.
3.3 Do not press onto the
centre of the filter –it might
damage the filter paper.
3.4 Screw the adapter into
the filter mounting so far that
the adapter will be in contact
with the gasket.
Then turn it about 1/8 turn
further in order to ensure a
good seal.

Particle filter
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3.5 Fit one pre-filter into the
filter holder.
3.6 The pre-filter should have
slipped under the shoulders
in the pre-filter holder.
3.7 Press the filter holder
onto the particle filter.
3.8 Correctly mounted pre-
filter holder with particle filter.

4. Combined filers, Gas filter + particle filter
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4.1 Snap the particle filter
onto the gas filter. The arrows
on the particle filter. must
point towards the gas filter.
4.2 Do not press onto the
centre of the filter it might
damage the filter paper.
4.3 Check that the gaskets in
the filter mounting of the fan
unit are in place and are in
good condition.

Combined filers, Gas filter + particle filter
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4.4 Fit one pre-filter, SR 221
into the filter holder.
4.5 Screw the filter
combination into the filter
mounting so far that the filter
will be in contact with the
gasket. Then turn it about 1/8
turn further in order to ensure
a good seal. Press the filter
holder onto the particle filter.
4.6 Correctly mounted pre-
filter holder.
The filters used must be of the same type,
i.e. two SR 510 P3 or two SR 518 A2/SR 510 P3, etc.
When filters are changed, both filters/combined filters must
be changed at the same time.

5. Operation/Performance
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5.1 Start the fan by pressing
the control button.
5.2 After the button has been
pressed, a programmed test
will be run on the fan and the
display will then light up, the
audible signal will sound, and
the vibrator will vibrate twice.
5.3 If the button is pressed
again, the flow will increase to
240 l/min, and this is
indicated by the large fan
symbol lighting up.
If the control button is
pressed again, the fan flow
rate will revert to 175 l/min
and the small fan symbol will
again light up.

Operation/Performance
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5.4 The battery symbol on the
display indicates the battery
capacity.
1. Lights green: > 70 %
2. Flashing green: 50-70 %
3. Lights yellow: 20-50 %
4. Flashing red: < 20 %
5.5 When about 5% of the
battery capacity is left, the fan
will begin to initiate an alarm
and the battery symbol will
flash. The battery capacity is
sufficient to allow the work to
be concluded without undue
haste. The work should then
be interrupted and the wearer
of the equipment should
leave the site.
5.6 To switch off the fan, keep
the control button depressed
for about 2 seconds.

6. Performance check, minimum flow
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6.1 Check that the fan is
complete with filters, is
correctly fitted, cleaned and
undamaged.
Start the fan unit.
Connect the hose from the
head top to the fan and turn it
about 1/8 of a turn clockwise.
6.2 Turn the flow meter bag
inside out so that the
transparent measuring tube is
on the outside.
Note. If the bag is turned with
the measuring tube inwards,
it can be used as a storage
bag.
6.3 Place the head top in the
flow meter bag and start the
fan unit.
Grip the lower part of the bag
in order to seal around the
hose.
Grip around the measuring
tube and hold the tube
vertical.
The ball should now float
level with or just over the
175 l/min marking.
If the minimum flow is not
achieved, check that:
-The flow meter is vertical
-The ball moves freely
-The bag seals well around
the hose.

7. Performance check, alarms
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The equipment is designed to provide a warning if the air flow is
obstructed, and this should be checked in conjunction with the
flow. Check before the equipment is taken into use.
N.B. If the minimum flow is not achieved or if the alarm signals
do not operate as intended, the fan must not be used.
7.1 Cause a flow stoppage by
still holding tightly the joint
between the hose and the
flow meter bag and then
blocking off the flow meter
outlet.
7.2 The fan will now initiate
an alarm by audible and
visual signals and vibrations.
7.3 If the flow meter outlet is
now unblocked and the air is
allowed to flow freely, the
alarm signals will cease
within 10 –15 seconds.
Switch off the fan and remove
the head top from the flow
meter bag.

8. Putting the equipment on
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Before putting the equipment on, read carefully the user
instructions for the head top.
After the filter has been fitted, a performance check has been
carried out and the head top has been connected, the equipment
can be put on.
8.1 Snap the two parts of the
buckle together.
After the buckles have been
connected, tighten the belt so
that it is comfortable.
8.2 The fan should be firmly
in contact with the wearer’s
back in order to ensure
optimum comfort and
ergonomic benefits.
8.3 Put the belt ends in the
clips on each side of the belt.

9. To change the particle filters
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9.1 Change particle filter by
bending the pre-filter holder
from the filter adapter.
Bear in mind that both filters
must be changed at the same
time.
9.2 Grip the filter with one
hand.
Place the thumb of the other
hand on the underside of the
adapter at the semi-circular
gap. Then prise out the filter.
9.3 Change pre-filter by press
it in the middle and then
remove it.

To change the gasfilters, combined filters
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9.4 To change the gas filter:
Unscrew the filter/combined
filter. To change the gas filter,
prise the particle filter off the
gas filter.
9.5 As an alternative, the filter
combination can be
separated by means of the
filter adapter.
Bear in mind that both filters/combined filters must be changed
at the same time and must be of the same type and class.

10. Cleaning/Disinfection
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10.1 The plug kit is used for
cleaning or decontamination
of the fan unit and prevents
dirt and water from entering
the fan housing.
Disconnect the breathing
hose and the filters and install
the plugs.
10.2 In the event of heavy
fouling, a soft brush or
sponge wetted with a solution
of water and dishwashing
detergent can be used.
10.3 An SR 5226 cleaning
wipe should be used for daily
cleaning.
Wipe the outside of the fan.
If necessary, spray the product with 70 % ethanol or
isopropanol solution for disinfection.

Cleaning/Disinfection
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10.4 Clean the pre-filter
holders inside and out. 10.5 Wipe the filter adapter clean.
Check that the sealing ridge
for the particle filter is
undamaged.
10.6 Wipe the belt clean.

11. Maintenance schedule
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11.1 The gasket has a groove
all round and is fitted on a
flange below the threads in
the filter mounting.
Remove the old gasket.
11.2 Fit the new gasket onto
the flange. Check that the
gasket is in place all round.
Before use After use Annually
Visual
inspection O O
Performance
check O O
Cleaning
O
Change
of fan gaskets O
The following schedule shows the recommended minimum
maintenance procedures required in order to ensure that the
equipment is always in functional condition.

Troubleshooting schedule
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Fault
Reason
Action
The fan unit fails to start
Battery discharged
Recharge battery
Fan
-battery contact
problems
Bend/adjust/clean the battery terminals. Check
that there are two terminals. Check the contact
rivets on the fan.
Battery faulty
New battery,
test another battery
Measure the voltage which
should be
13
–17 V
Charger faulty, fails to
charge the battery.
Make a visual check and make
sure that there
is no dirt on the contacts to the charger or
battery.
A new battery charger.
Fan motor/electronic
fault
Send the fan unit for repair
Yellow battery symbol
flashes
Battery discharged
Recharge the battery