High Pressure Seal; Replacing Cylinder And Valve Assembly - Scott 2.2 Operating & Maintenance Instructions

4. Inspect the High Pressure Seal in the high pressure inlet. If high
pressure seal is damaged or missing, remove the respirator from
service and tag for repair by authorized personnel. See FIGURE 21.

HIGH pREssURE sEal

5. Replace with a fully charged cylinder and valve assembly of the appropri-
ate pressure rating. Verify that the replacement cylinder has protective
cap installed on the CGA Fill fitting on the valve and that the cylinder
connector is clean and free of dirt and debris. See FIGURE 22.
VERIFY THaT THE
CYlINDER CONNECTOR
Is ClEaN aND FREE
OF DIRT OR DEBRIs
pUsH
DIRECTlY
ON THE
CYlINDER
ValVE TO
ENGaGE

REplaCING CYlINDER aND ValVE assEMBlY

6. Slide the top of the cylinder up under the cylinder retention strap.
Orient the SNAP-CHANGE connector over the high pressure inlet of
the pressure reducer.
7. Engage the cylinder SNAP-CHANGE by pushing the cylinder con-
nector into the pressure reducer firmly until both SNAP-CHANGE
locks click and lock. PUSH DIRECTLY ON THE CYLINDER VALVE
TO ENGAGE. See FIGURE 22.
HIGH pREssURE
sEal
FIGURE 21
pROTECTIVE
Cap ON CGa
FIll FITTING
FIGURE 22
sNap-CHaNGE CYlINDER REplaCEMENT pROCEDURE
Page 39 of 48
WaRNING
UsE OF a REspIRaTOR WITH a MIssING
O R D a M a G E D H I G H p R E s s U R E s E a l
M aY R E s U lT I N a I R l E a K a G E W H I C H
M aY R E D U C E T H E D U R aT I O N O F U s E
a N D / O R T H E T I M E R E M a I N I N G a F T E R
aN END OF sERVICE alaRM aCTUaTEs
OR MaY pREVENT THE END OF sERVICE
alaRM FROM aCTUaTING. THE UsE OF a
REspIRaTOR WITH sUCH aN aIR lEaK MaY
REsUlT IN EXpOsING THE UsER OF THE
REspIRaTOR TO THE aTMOspHERE THE
REspIRaTOR Is INTENDED TO pROTECT
aGaINsT aND MaY lEaD TO sERIOUs
INJURY OR DEaTH.
WaRNING
VERIFY THaT THE CYlINDER CONNECTOR
Is ClEaN aND FREE OF DIRT OR DEBRIs
BEFORE ENGaGING THE sNap-CHaNGE
TO THE pREssURE REDUCER. DIRT IN
THE CONNECTOR CaN CONTaMINaTE THE
BREaTHING aIR paTH aND CaN CaUsE THE
REspIRaTOR TO MalFUNCTION REsUlTING
IN lOss OF aIR sUpplY aND sERIOUs
INJURY OR DEaTH.
CaUTION
OVERTIGHTENING THE CYlINDER ValVE
MaY CaUsE DaMaGE THaT COUlD REsUlT
IN lEaKaGE OF aIR FROM THE CYlINDER.
UsE NO TOOls TO ClOsE THE CYlINDER
ValVE.
CONTINUED ON NEXT paGE...
P/N 595279-01 Rev. B 5/14