Scott 2.2 Operating & Maintenance Instructions page 33

6. Connect the RIC UAC filling hose assembly by pushing the quick
disconnect coupling on the RIC UAC filling hose assembly on to the
coupling on the respirator until the quick disconnect sleeve "clicks"
into place. See FIGURE 16.
7. Slowly open the RIC UAC filling hose assembly valve to pressurize
the supply line and begin air flow to the cylinder.
WHEN THE REGULATED FILLING PRESSURE IS HELD CONSTANT AT
THE CYLINDER RATED PRESSURE THROUGHOUT THE CHARGING
CYCLE THE FLOW mUST BE mONITORED TO NOT EXCEED 1500 PSIG/
mINUTE FOR mOST CYLINDER AND VALVE ASSEmBLIES.
IF AT ANY TImE DURING THE FILLING PROCESS A LEAK IS DE-
TECTED, ImmEDIATELY DISCONTINUE THE FILLING PROCEDURE
AND LEAVE THE IDLH ATmOSPHERE.
8. Continually monitor the pressure gauge on the respirator user's
cylinder while filling. When the pressure gauge on the user's cylin-
der reads "FULL," immediately terminate filling and disconnect the
air supply source. A check valve in the RIC UAC coupling on the
respirator will prevent air from flowing out of the respirator user's
cylinder.
a) If the respirator user's cylinder is being filled from a portable air
supply cylinder (such as a SCOTT RIT-PAK portable air supply),
the air from the supply cylinder will stop flowing when the pressure
in the respirator user's cylinder equals the remaining pressure in
the portable air supply (pressures will balance). Disconnect the
RIC UAC filling hose assembly.
b) If the respirator user's cylinder is being filled from a supply hose
connected to a high pressure air supply source, extra care is
required to prevent over filling the respirator user's cylinder. If
the supply pressure exceeds the pressure rating for the complete
respirator, the RIC UAC relief valve will open when the respira-
tor user's cylinder is full and will reset after the high pressure
air supply is disconnected. The cylinder pressure gauge should
indicate "full" at this time. Disconnect the RIC UAC filling hose
assembly.
THE RIC UAC mANIFOLD IS FITTED WITH A RELIEF VALVE TO VENT
AIR IF THE RATED PRESSURE OF THE RESPIRATOR IS EXCEEDED.
IF THIS OCCURS, SHUT OFF THE AIR FROm THE RIC UAC FILLING
HOSE ASSEmBLY AND DISCONNECT THE AIR SUPPLY. THE RELIEF
VALVE WILL RESET AFTER EXCESS PRESSURE IS RELEASED.
THE RIC UAC ASSEmBLY IS DESIGNED WITH INTEGRAL PROTECTION
DEVICES. DO NOT DISASSEmBLE OR mODIFY ANY PART OF THIS AS-
SEmBLY.
9. When charging is complete, disconnect the RIC UAC filling hose as-
sembly from the RIC UAC coupling on the respirator. To disconnect
RIC UAC filling hose assembly, pull the coupling sleeve away from
the respirator until the coupling disengages. Install the dust caps on
the RIC UAC coupling and on the RIC UAC filling hose assembly
coupling.
10. Charging the cylinder will increase the temperature of the air within
the cylinder. When charging is complete and the cylinder cools to
ambient temperature, the pressure within the cylinder will fall slightly.
If practical in the situation, top off the cylinder to ensure optimum
service time.
IF CHARGING IN COLD AmBIENT CONDITIONS WHERE THE TEmPERA-
TURES ARE BELOW FREEZING, SEE THE USE OF THE RIC UAC IN
lOW TEMPERATURE SECTION OF THIS INSTRUCTION.
11. After charging is complete, monitor the cylinder pressure on the res-
pirator and repeat the above procedure as needed until the respirator
user can be removed from the hazardous atmosphere.
NOTE
NOTE
NOTE
NOTE
NOTE
Page 33 of 48
WARNING
IF AT ANy TIME DURING THE FIllING
P R O C E S S A l E A K I S
IMMEDIATEly DISCONTINUE THE FIllING
P R O C E D U R E A N D l E AV E T H E I D l H
ATMOSPHERE. CONTINUING TO FIll A
RESPIRATOR THAT HAS EXHIBITED A lEAK
MAy CAUSE A FAIlURE OF THE EQUIPMENT
WHICH MAy RESUlT IN SERIOUS INJURy
OR DEATH.
P/N 595279-01 Rev. B 5/14
D E T E C T E D ,