Sundstrom SR 500 User manual

2020-10-05
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Operating Instruction
SR 500
Revision: 03
Powered Air-Purifying Respirator
PAPR

Introduction
The User Instructions for the SR 500 should be read before use. DO NOT USE the respirator until you
completely read and understand the instruction manual.
The SR 500 is a battery powered fan unit that, together with filters/cartridge and an approved respirator inlet
covering (facepiece or headgear) is a NIOSH 42CFR84 approved powered air-purifying respirator (PAPR).
The SR 500 is NIOSH Loose and Tight Fit approved with certain components.
Available head tops for the SR 500 are listed in the User Instructions.
When selecting an air-purifying respirator the following are some of the factors that must be considered:
• 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.
OI06H-0121 SR 500 2020-10-053

IMPORTANT:
THIS RESPIRATOR IS INTENDED TO BE USED ONLY IN CONJUNCTION
WITH AN ORGANIZED RESPIRATORY PROTECTION PROGRAM WHICH
COMPLIES WITH THE REQUIREMENTS OF “PRACTICES FOR
RESPIRATORY PROTECTION”, Z88.2-1992 AVAILABLE FROM AMERICAN
NATIONAL STANDARDS INSTITUTE (ANSI), 11 WEST 42ND STREET,
NEW YORK, N.Y. 10036, OR WITH THE REQUIREMENTS OF OSHA
STANDARD 29 CFR 1910.134 AVAILABLE FROM THE US DEPARTMENT
OF LABOR, OCCUPATIONAL SAFETYAND HEALTH ADMINISTRATION
AND/OR OTHER PERTINENT NATIONALLY RECOGNIZED STANDARDS.
NIOSH approval (USA)
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Unpacking the SR 500
Check that the equipment is complete in accordance with
the packing list and has not been damaged in transit
Packing list:
•Fan unit SR 500
•Battery, HD
•Battery charger SR 513
•Belt SR 508
•Particulate filter SR 510 P100/HE, 2x
•Filter adapters, SR 511, 2x
•Pre-filter holders, SR 512, 2x
•Flow meter SR 356
•User instructions
•Cleaning Wipe SR 5226
•Plug kit
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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 covering the battery
terminals.
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 fitted belt.

3. Particulate filter
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7
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 particulate filter
onto the filter adapter.
3.3 Do not press onto the
center 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.

3. Particulate filter
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3.5 Press the filter holder
onto the particulate filter.
3.6 Correctly mounted pre-
filter holder with particulate
filter.

4. Combined filter/cartridge
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4.1 Snap the particulate filter
onto the chemical cartridge.
The arrows on the particulate
filter must point towards the
chemical cartridge.
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 filter/cartridge
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4.4 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.
4.5 Correctly fitted pre-filter
holder.
The filters used must be of the same type,
e.g. SR 532 OV/SD/CL/HC/HF+SR 510 P100/HE.
When changing the filters and cartridges, both filters and
cartridges must be changed.

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
sound signal will sound, and
the vibrator will vibrate twice.
5.3 If the button is pressed
again, the flow will increase to
at least 7.9 CFM (225 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 at least 6.2
CFM (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 facepiece or
headgear 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
6.2CFM (175 l/min) marking.
If the minimum flow is not
achieved, check that:
-The flow meter held upright,
-The ball moves freely
-The bag seals well around
the hose.

7. Performance check, alarms
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The fan unit 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.
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 Provoke an air flow
stoppage by gripping the top
part of the bag or by shutting
off the flow meter outlet.
7.2 The fan will now initiate
an alarm by sound and light
signals and vibrations.
7.3 If the air is again allowed
to flow, the alarm signals will
automatically cease after 10
to 15 seconds.
Switch off the fan unit and
remove the flow meter.

8. Donning
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Before putting it on, read the user instructions for the head top.
After the filters /cartridges have been fitted, a performance
check has been carried out and the respiratory inlet covering
has been connected, the SR 500 can be put on.
8.1 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.
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.
Leave the polluted area
before removing the
respiratory inlet covering and
fan unit

9. Change particulate filter
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9.1 Change particulate 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 semicircular
gap. Then prise out the filter.
Change the particle filters at the latest when they are clogged. The
fan senses when this has occurred and provides a warning.

To change the combined filter/cartridge
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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 Grip the gas filter with one
hand.
Insert a coin or some other
flat object, e.g. the filter
adapter, in the joint between
the particulate filter and
chemical cartridge.
Then prise out the filter.
Bear in mind that both filters/combined filters must be changed
at the same time and must be of the same type and class.
The gas cartridges should preferably be changed in accordance with
a predetermined schedule. If no measurements are made on site, the
gas cartridges should be changed once a week or more frequently if
the pollutants can be smelt or tasted in the head top.

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.
WARNING: Never use a solvent for cleaning.

10. 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.