SeQual INTEGRA E-Z - Unit Test Procedure - Alternate Method; Alarm Verification Test

Service Manual
Integra E-Z Oxygen Concentrators
Chart SeQual Technologies Inc. Page 14 of 34 P/N 2917
4.1.6 Verify the O
2
concentration, O
2
flow rate and O
2
pressure are within specification (See Section
7, 8 or 9 depending on the model).
Factory Recommended Test Setup to verify performance of Oxygen Concentrator
NOTE:
For Integra E-Z units an external flow valve will not perform
adequately due to the flow control circuit. In this situation the
pressure gage should be plumbed into the system at the HEPA filter,
inside the unit. For the O
2
monitor without pump, it can be installed
after the outlet of the external flow meter or at the outlet fitting (see
Alternate Method 4.2) to force the O
2
gas through the O
2
analyzer
(check to ensure the O
2
analyzer can handle the total flow rate).
4.2. Unit Test Procedure-Alternate Method
Attach a calibrated Oxygen Monitor to the DISS block in accordance with Oxygen Monitor
manufacturers recommendations. It is important to not obstruct the flow, as this will affect the
Integra’s actual concentration (lower flow will typically increase the oxygen concentration)
NOTE:
The flow control circuit on the Integra E-Z is designed to properly
deliver oxygen flow rates during normal usage. Some sensing
equipment may restrict the actual flow rate below what the Integra
E-Z can provide and provide inaccurate concentration readings. A
highly blocked oxygen outlet will result in lower oxygen
concentration due to a build-up of argon gas.
4.3. Alarm Verification Test
Verify the Alarm Indicators (buzzer and lights) are functioning properly by confirming the
proper start-up sequence for the unit per sections describe below.
4.3.1. Start-up Sequence OM units
On initial start-up Integra E-Z units light the Green, Yellow and Red LED’s with a 3 second
beep followed by an intermittent beep for the remainder of the warm-up. As concentration
increases to ~70%, the Red LED turns off and the Yellow and Green remain on. When the
concentration reaches normal operating range (above 85%), the Yellow LED will turn off as
well as the intermittent beep. The Green LED will stay lit indicating normal operation. The
INTEGRA E-Z
INTERNAL
FLOW
CONTROL
VALVE
FLOW
METER
O
2
MONITOR
WITH PUMP
(Preferred Location)
PRESSURE
GAUGE
O
2
MONITOR
WITHOUT PUMP
(Alternate Location)
Atmosphere