Dsg And Mass Pressure Reducer; Warning Signal; High Pressure Seal Rings; General Overhaul - MSA DSL Serie Manual De Instrucciones

9.1.

DSG and MASS Pressure Reducer

9.1.1 Warning signal

 Connect lung governed demand valve to connector.
 Connect the compressed air supply hose to the connector and to the pressure reducer.
 Open the cylinder valve(s).
 Cylinder pressure indicated on the pressure gauge must be at least 120 bar.
 Close the cylinder valve(s) again.
 Carefully activate the flushing function of the lung governed demand valve until air flows out.
Watch the high pressure gauge, the warning signal must be activated by 30 bar minimum.


9.1.2 High Pressure Seal Rings

Check the condition of the O-rings at the cylinder connection (visual inspection) before connecting the compressed air
cylinder, replace if necessary. O-ring replacement is recommended at least once every 12 months. .

9.1.3 General Overhaul

The six-year general overhaul, or repairs in the event of a functional fault, should be performed only by the
manufacturer or by a person authorised by MSA. All rubber components and other parts subject to wear are
replaced. The apparatus is then readjusted and sealed.
9.2.

Air-tightness of High and Medium Pressure Components before use

9.2.1 Apparatus Supplied from a Compressed Air Cylinder

 Connect the compressed air supply hose to adapter and pressure reducer.
 Open the cylinder valve(s).
The cylinder pressure must be at least 270 bar with 300 bar cylinders and at least 180 bar with 200 bar

cylinders.
 Close the cylinder valve(s). Pressure must not drop by more than 10 bar within one minute.

9.2.2 Apparatus Supplied from a Breathable Air Network

 Connect the compressed air supply hose to adapter and pressure reducer and tap point in the breathable air
network.
 Open the shut-off valve at the tap point in the breathable air network.
 Medium pressure must be at the values indicated in paragraphs 5.2.1/5.2.2.
 Close the shut-off valve. Pressure drops of 1 bar max. within one minute are permissible.
Care, Maintenance, Inspection and Storage
DSL Series
GB
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