27
10. Close the cylinder valve, open the by-pass valve slightly in order to allow the air
to slowly evacuate. Read the mechanical pressure gauge when HUD Yellow and
Red LEDs begin to ash. The pressure gauge should read 1/2 full.
NOTE: THE PRESSURE INDICATION DISPLAYED IN THE HUD IS REFRESHED EVERY 2 SECONDS.
Continue to slowly evacuate the air and read the pressure gauge when the
mechanical whistle starts to sound, the visual red LED only on the HUD starts to
ash, and the red LED on the BAC and DDU starts to ash. The pressure gauge
should read 1/3 full.
For the S9 and S9 Incurve HP (4500 psi), the alarm should sound at
approximately 1,575 psi.
For the S9 and S9 Incurve LP (2216 psi) the alarm should sound at approximately
775 psi.
NOTE: TO MEET THE NIOSH REQUIREMENT FOR SET POINT ACTIVATION OF THE EOSTI’S AND THE NFPA 1981-
2019 REQUIREMENTS, THE S9 EOSTI 33% (LOW AIR ALARM WHISTLE) AND THE HUD EOSTI 33% ARE SET AT
35%+/- 2%.
THE RANGE FOR THE ACTIVATION OF THE EOSTI’S (33% LOW AIR WHISTLE AND 33% HUD FLASHING RED LED)
FOR THE S9 AND S9 INCURVE HP (4500 PSI) IS BETWEEN 1485 PSI TO 1665 PSI (33% TO 37%).
THE RANGE FOR THE ACTIVATION OF THE EOSTI’S (LOW AIR WHISTLE AND 33% HUD FLASHING RED LED) FOR
THE S9 AND S9 INCURVE LP (2216 PSI) IS BETWEEN 732 PSI TO 819 PSI (33% TO 37%).
NOTE! IF THE SOUND LEVEL OF THE LOW AIR WARNING WHISTLE SEEMS TO BE BELOW NORMAL, REMOVE THE
UNIT FROM SERVICE. SERVICE THE LOW AIR WHISTLE ACCORDING TO THE INTERSPIRO SERVICE MANUAL. THIS
MUST BE CARRIED OUT BY A HOLDER OF AN INTERSPIRO SERVICE CERTIFICATE.
NOTE! THE REGULATOR HAS A SAFETY NOZZLE AT THE HIGH PRESSURE HOSE CONNECTION. THE SAFETY
NOZZLE LIMITS THE LOSS OF AIR IN THE EVENT OF A HIGH PRESSURE HOSE OR GAUGE LEAK. DURING A
FUNCTION TEST OF THE LOW AIR WARNING IT IS IMPORTANT THAT THE AIR PRESSURE BE REDUCED SLOWLY
TO ALLOW THE PRESSURE TO PASS BACK THROUGH THE SAFETY NOZZLE. IF THE SECONDARY PRESSURE IS
REDUCED MORE QUICKLY THAN THE HIGH PRESSURE AIR CAN BE REDUCED TO REACH THE ACTIVATION
PRESSURE, THE WHISTLE MAY NOT HAVE SUFFICIENT AIR TO SOUND AND THE FUNCTION TEST SHOULD BE
REPEATED.
11. When the alarm sounds, turn the by-pass valve to the “OFF” position.
CAUTION! THE BY-PASS VALVE MUST BE RETURNED TO ITS CLOSED POSITION PRIOR TO THE REMAINING AIR
BEING RELEASED FROM THE SYSTEM. FAILURE TO CLOSE THE BY-PASS VALVE WILL CAUSE THE BY-PASS TO BE IN
THE “ON” POSITION WHICH WILL CAUSE A FREE FLOW OF AIR WHEN THE CYLINDER IS TURNED ON FOR NEXT
USE.
12. Turn on the positive pressure to let the system evacuate.
13. To turn the unit off press the black backlight button two times or press and hold
the black backlight button and then simultaneously press the red alarm button
when the system has evacuated fully.
To Next Page
Loading...