Sundstrom SR307, User Instruction

4

•  Connect the hose to the control valve inlet. Fig 3.

•  The mask is now being supplied with air and you can put it on.

•  Use the regulator knob to set the air flow rate to suit your 

current work intensity. Fig. 2.

  In the fully closed position (turn the knob anti-clockwise), the 

flow is about 5.3 CFM (150 l/min), and in the fully open position 

(turn the knob clockwise), it is about 12 CFM (340 l/min).

•  The breathing hose retaining clip which is supplied can be 

used to advantage for securing the breathing hose to your 

body. Fig. 1:11

2.5  Taking the equipment off

Leave the polluted work area before taking the equipment off.

•  Remove the mask

Releasing the air supply hoses:

CEJN connectors 

Push the coupling towards the nipple, at the same time pulling 

the locking ring back. Fig. 4.

Schrader and Hansen connectors

Twist the locking ring on the coupling.

Releasing the breathing hose:

Push the coupling towards the nipple, at the same time pulling 

the locking ring back. Fig. 4.

After every period of use, check that no defects have occurred, 

and clean the equipment. See 4.1.

2.6  Cautions / limitations

A

 -  Not for use in atmospheres containing less than 19.5 

percent oxygen. 

B

 -  Not for use in atmospheres immediately dangerous to life 

or health.

C

 -  Do not exceed maximum use concentrations established 

by regulatory standards.

D 

-  Air-line respirators can be used only when the respirators 

are supplied with respirable air meeting the requirements 

of CGA G-7.1 Grade D or higher quality.

E

 -  Use only the pressure ranges and hose lengths specified 

in the User’s Instructions.

J

 -  Failure to properly use and maintain this product could 

result in injury or death.

M

 -  All approved respirators shall be selected, fitted, used, and 

maintained in accordance with MSHA, OSHA and other 

applicable regulations.

N

 -  Never substitute, modify, add, or omit parts. Use only 

exact replacement parts in configuration as specified by 

the manufacturer.

O 

-  Refer to User’s Instructions, and/or maintenance manuals 

for information on use and maintenance of these respira-

tors.

S

 -  Special or critical User’s Instructions and/or specific 

use limitations apply. Refer to User’s Instructions before 

donning.

Do not use 

−  If the ambient air does not have a normal oxygen content.

−  If the pollutants are unknown.

−  With oxygen or oxygen-enriched air.

−  If you can smell or taste the pollutants.

−  If you finds it difficult to breath.

− If you experience dizziness, nausea or other types of 

discomfort.

−  If the warning whistle sounds, indicating that the air supply 

is lower than recommended.

−  If the functional check does not produce satisfactory results. 

See 2.3. 

Limitations

−  A person working in an explosive or flammable environment 

must follow any local regulations that may be in force for 

such conditions.

−  At very high work intensity, a partial vacuum may occur in 

the equipment during the inhalation phase, which may cause 

ambient air to be drawn in.

−  The air supply system should be equipped with an appro-

priately rated and adjusted pressure relief safety valve.

−  The equipment is approved only together with Sundström 

compressed air supply hoses.

3.  Technical specification / S – Special 

     or Critical User’s Instructions

Air flow rate

5.3 CFM (150 l/min) to 12 CFM (340 l/min) measured in the 

mask.

Manufacturer’s minimum design flow: 5.3 CFM (150 l/min).

Compressed air supply hoses and regulator 

The hoses and regulator are approved with three alternative 

connectors 

−  CEJN 10 342 series

−  Schrader Twist lock series 

−  Hansen 2RL series

The following hoses have been approved together with SR 307 

compressed air attachment:

Model number SR 358

0.374/0.590 inch (9.5/15 mm) plastic hose made of PVC-

reinforced polyester. 

Length 16.4 feet, 32.9 feet, 49.3 feet, 65.8 feet, 82.2 feet 

and 98.7 feet 

(5 m, 10 m, 15 m, 20 m, 25 m and 30 m).

Model number SR 359

0.374/0.709 inch (9.5/18 m) rubber hose made of EPDM/

polyester. Antistatic and heat resistant.

Length 16.4 feet, 32.9 feet, 49.3 feet, 65.8 feet, 82.2 feet 

and 98.7 feet 

(5 m, 10 m, 15 m, 20 m, 25 m and 30 m).

N.B. The maximum length is 98.7 feet (30 m). 

One length of hose must not be connected to another in 

order to lengthen the hose.

Materials

Plastic parts are marked with the material code and recycling 

symbol.

Shelf life

10 years from the date of manufacture. 

Sizes

Half mask SR 100 Small/Medium

Half mask SR 100 Medium/Large

Half mask SR 90-2 Small/Medium

Half mask SR 90-2 Medium/Large

Full face mask SR 200 one size

Temperature range storage

4 ºF - 104 ºF (-20 ºC to +40 ºC) and a relative humidity  

below 90%.