Precision Medical Air-Oxygen Blender - Manual (Page 11)

10
Blender
Air-Oxygen
Primary Outlets Flow capacity:
• High Flow Blender (Pm 5200 model) 15 l/min to 120 l/min
• Low Flow Blender (PM 5300 Model) 3 l/min to 30 l/min
Auxiliary Outlet:
The auxiliary flow outlet maintains the same flow capacity
and F
I O
2
accuracy as the Primary Outlets with Bleed Valve
not engaged. When bleed flow is activated, some of the air/
oxygen mixture will vent to atmosphere to maintain F
I O
2
concentration accuracy at the Low Flow settings.
• High Flow Blender (Pm 5200 model) 15 l/min or less
• Low Flow Blender (Pm 5300 model) 3 l/min or less
5. Attach a supply line to the outlet port of the flowmeter.
ALARM TEST
1. Connect the Air-Oxygen Blender to air and oxygen sources,
pressurize the Blender and turn “ON” the flowmeter.
2. Set Oxygen Concentration Dial to 60% F
I O
2.
3. Disconnect or turn “OFF” the air supply to the Air-Oxygen Blender.
The Blender should alarm with a loud whistle noise. The whistle
indicates the alarm is operating correctly.
4. Reconnect and activate the air supply line to the Blender, the
alarm should stop whistling.
5. Disconnect or turn “OFF” the oxygen supply line to the Blender.
The whistle indicates the alarm is operating correctly.
6. Reconnect and activate the oxygen supply line to the Blender,
the alarm should stop whistling.
7. If alarm fails to function properly, DO NOT USE.
REVERSE gAS FLOW PROCEdURE
1. Disconnect the oxygen hose from the gas source. Remove all
outlet connections from the Blender to ensure that there is no
outlet flow.
2. While gradually increasing the air supply pressure from 30-75 psi
(2.07-5.17 bar) check for leakage past the oxygen inlet check valve.
3. Replace the Duckbill Check Valve in the oxygen inlet if
leakage is > 100 ml/min. Reference Air-Oxygen Blender
Service manual (P/N 504827.)
4. Repeat steps 1-3 to check for leakage past the air inlet check
valve.