Precision Medical PM5400 Series - Manual (Page 10)

9
H
ELI
O
2
BLENDEr
HELIUM-OxygEn
PRE-USE TESTING
WARNING
• Read this User Manual before installing or operating the H
ELI
O
2
Blender.
• Confirm the concentration of heliox with an alarmed Oxygen Monitor /
Analyzer.
• Confirm contents of heliox cylinder prior to use.
CAUTION
Inspect the H
ELI
O
2
Blender for visual damage before use, DO NOT
USE if damaged.
NOTE: The tests listed below should be performed prior to placing the
H
ELI
O
2
Blender in service.
Pre-Use Testing consists of:
• Alarm Test • Reverse Gas Flow Procedure
1. Secure the H
ELI
O
2
Blender to a wall or pole bracket in an upright position.
2. Connect the heliox and oxygen supply lines to the appropriate inlet fittings
on the bottom of the H
ELI
O
2
Blender.
3. Attach a flowmeter, or other metering device to one of the outlet ports and
verify F
I O
2
range for accuracy with an alarmed Oxygen Monitor / Analyzer.
Primary Outlets Flow capacity:
• High Flow Blender (PM 5500 Model) 15 l/min to 120 l/min
• Low Flow Blender (PM 5400 Model) 3 l/min to 30 l/min
Auxiliary Outlet Use:
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 the bleed flow is
activated, some of the heliox mixture will vent to atmosphere to maintain F
I O
2
concentration accuracy at the low flow settings.
• High Flow Blender (PM 5500 Model) 15 l/min or less
• Low Flow Blender (PM 5400 Model) 3 l/min or less
4. Attach a supply line to the outlet port of the flowmeter.
ALARM TEST
1. Connect the H
ELI
O
2
Blender to respective heliox and oxygen sources,
pressurize the Blender and turn “ON” the flowmeter.
2. Set Oxygen Concentration Dial to 50% F
I O
2.
3. Disconnect or turn “OFF” the heliox supply line to the H
ELI
O
2
Blender. The
Blender should alarm with a loud whistle noise. The whistle indicates the
alarm is operating correctly.
4. Reconnect and activate the heliox supply line to the Blender, the alarm
should stop whistling.
5. Disconnect or turn “OFF” the oxygen supply line to the H
ELI
O
2
Blender.
The Blender should alarm with a loud whistle noise. The whistle indicates
the alarm is operating correctly.
6. Reconnect and activate the oxygen supply line to the Blender, the alarm
should stop whistling.