Sundstrom SR 900 Bedienungsanleitung

Fit the SR900

Sling the lower neck strap around your neck.

Hold the mask up to your chin.

Cup the mask up, until it covers your mouth and

nose.

Hold the mask in position, pull the upper head

harness up and over your head. Make sure the

upper strap sits on the crest of your head.

If necessary, unlock the buckles at your neck and

tighten or loosen the tension of the strap.

Even out the tension of the head harness by

hooking your fingers around the LOWER strap

and pulling outwards a few times. This will

increase the lift of the upper strap, supporting

the weight of the filter.

IMPORTANT:

Never pull the head harness over a hard hat, ear

muffs, goggles, cap or other head gear – the

harness must be fitted DIRECTLY on your head.

Fit the filter holder

Insert the bayonet fitting of the filter holder into

the corresponding fitting in the mask, then turn

¼ turn clockwise until it snaps securely into

place.

To remove the filter holder, turn it ¼ turn anti-

clockwise and pull away.

1/4 turn

Fit a filter

Make sure the filter is facing the correct way

(arrow pointing towards the respirator).

Place the filter inside the rubber fitting ring of

the mask.

Ensure that the flange of the filter fits into the

groove all the way around the rubber fitting.

Fit a pre-filter to the front of the main filter or

combined filters.

Fit a pre-filter

IMPORTANT:

A pre-filter should ALWAYS be attached to the

front of any main filter, whether a particle or a

gas filter.

Place a pre-filter in the pre-filter holder.

Snap the pre-filter holder with the pre-filter onto

the front of the main filter.

Check for leakage

Make sure the mask is completely assembled

with all parts intact, including filter, pre-filter and

pre-filter holder

Fit the respirator on your face.

Cover the centre hole in the pre-filter holder

with the palm of your hand.

Breathe in and hold your breath for about ten

seconds.

The mask should collapse against your face and

remain collapsed until you breathe out again.

If the mask returns quickly to its normal shape,

there may be a leakage problem. If so, repeat

the leakage test. If the same problem happens

again, see your supervisor.

Remove a filter

Pull the rubber tab at the bottom of the filter

flange and peel back the rubber rim until the

filter is free.

Wear your breathing hose

There are two types of breathing hose: single

and twin.

Most SR900 configurations can use either the

single or twin hose.

You can use the hose as is, but if your work

involves heat, sparks or open flames, you may

choose to cover the hose with a protective

flame-resistant cover. Both the single and twin

hoses can be protected in this way. Slip the

protective cover around the hose. If required,

fasten with the Velcro straps.

Whatever breathing device you use, the single

hose is designed to be worn on either side of the

body. The twin hose is worn on both sides of

your neck.

The nozzle end of the breathing hose connects

to one of the following breathing devices:

•Remote Filter Holder

•SR500 PAPR

•SR700 particle PAPR

•SR507 supplied-air regulator (NOTE: for

single hose only)

The valve end of the breathing hose connects to

the SR900 respirator.

Fit the hose to the mask

Insert the bayonet fitting of the valve end of the

breathing hose into the bayonet fitting of the

mask. Angle the hose connector until the two

fittings match. Then turn the hose connector ¼

turn clockwise until it snaps into position.

The same procedure applies to both the single

and the twin hose.

To remove the hose, turn it anticlockwise and

pull out the hose connector.

1/4 turn

Fit the hose to a device

The nozzle end of the hose can be connected to

various devices:

•Remote Filter Holder

•SR500 PAPR

•SR700 particle PAPR

•SR507 compressed air attachment (with

single hose only)

The procedure is the same for all devices:

•Make sure the O-ring at the tip of the

hose is intact.

•Insert the hose into the hole in the

device, fitting the two protruding lugs

into the corresponding slots of the

bayonet fitting.

•Turn the hose clockwise until it locks

securely.

To remove the hose from the device, turn the

connector anticlockwise and pull out.

IMPORTANT: Before using the SR900 respirator

with any of the devices listed above, make sure

you are familiar with the device and know how

to use it correctly. Please consult the appropriate

training modules for the respective device.

Fit to SR307 supplied-air

regulator

Attach the SR307 connection adaptor as you

would a filter.

Connect the filter adapter just as you would a

filter.

IMPORTANT: Before using the SR900 respirator

with the SR307 supplied-air regulator, make sure

you are familiar with the regulator and know

how to use it correctly. Please consult the SR307

training modules.

Use the Remote Filter Holder

The remote filter holder lets you wear the filter

around your back on a waist belt.

This may be of benefit if the work you perform

involves heat, sparks, spray or splashes.

Fit the filter holder to the belt attachment. The

square flange on the holder fits into the square

hole on the attachment. Slide the two parts

together until the locking tongue locks into

position.

You may choose to wear the filter holder

horizontally or vertically. In either case, ensure

that the hose connector is located on the upper

side of the belt.

Fit a main filter or combined filters, pre-filter and

pre-filter holder into the rubber filter holder, as

described earlier.

CAUTION: You may wish to remove the

inhalation membrane to minimise breathing

resistance. However, it is very important to

reinsert the membrane if you want to use the

filter holder in other configurations.

Match up the bayonet fittings on the filter holder

and the Remote Filter Holder and turn ¼ turn

clockwise until it locks into position.

1/4 turn

Fit a single or twin breathing hose between the

SR900 respirator and the Remote Filter Holder,

fit the mask to your face and tighten the

waistbelt.

Prepare for use in welding

The remote filter holder is ideal for use in

welding.

When the assembled equipment is fitted, it is

placed at your back directly behind you. This

helps keep the filter intake away from all welding

hazards, such as heat, sparks and toxic metal

fumes that may be released in the welding

process.

The remote filter holder gives the SR900

respirator a much more shallow profile, enabling

it to easily fit inside most welding hoods or

shields.

A spark-proof and flame-resistant cover is

available for protecting the breathing hose from

heat, the arc or flame, and flying sparks during

the welding.

Covers are available for both both the single and

twin hoses.

Simply slip the cover around the hose. If

required, fasten with the Velcro strips.

A spark-catching metal mesh can be inserted

into the pre-filter holder, preventing any sparks

from hitting the pre-filter or main filter.

Simply fit the mesh into the pre-filter holder

before inserting the pre-filter.

Give the SR900 a QUICK CLEAN

IMPORTANT:

Only a CLEAN respirator can provide effective

protection. The mask should be cleaned and

checked after each use — a simple procedure

that takes only a minute.

Cleaning may be done with warm soapy water

and a soft cloth, or by using Sundstrom’s special

sterilised hygienic cleaning tissues that keep

your mask soft and flexible.

NEVER USE SOLVENTS OR ABRASIVES.

Clean the outside of the respirator, checking for

cracks or other damage.

Wipe the inside of the mask, including any

‘nooks and crannies’ inside the respirator.

Make sure the face rim and chin cup of the mask

are thoroughly clean.

Replace the pre-filter with a new one.

Perform a THOROUGH CLEAN

Give the respirator a quick clean, as described

above.

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