Saros 9400R-SEQ Operators & Service Manual page 36

10) Verify the functionality of the increase and decrease flow buttons. Starting at flow setting C3, press the
decrease flow button and verify the screen reads C2. Press the increase flow button and verify the screen
changes back to C3.
NOTE: It is normal for the motor to speed up or slow down with each flow adjustment.
11) Verify the functionality of the pulse dose mode button. Press the button and verify the device toggles
between a continuous flow setting (C) and pulse dose setting (P). The C & P are displayed on the far left
side of the screen.
12) Verify the functionality of the no breath alarm. Switch to a pulse dose setting and do not attach any tubing to the outlet. Within 60
seconds of no breath detected, verify the system automatically changes to continuous flow. This is a patient safety measure.
13) Verify the unit runs on battery power. Disconnect the AC power supply and allow the SAROS to run for approximately 60 seconds.
Verify the unit continues to run without interruption and that the battery icon is still displayed on the screen.
14) Verify the no battery alarm. Remove the battery and verify that an audible alarm sounds and the red light is visible.
15) Within 5-10 seconds, reinstall the battery and verify the SAROS restarts automatically. Once the SAROS restarts, re-connect the
external power as well to resume battery charging.
6.6.2 Flow and O Concentration Test
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Connect the SAROS to a testing station per the diagram shown below:
SAROS
NOTE: If testing concentration or flow rate at multiple settings, allow a 5 minute stabilization period between changing the flow rate
prior to taking any test readings.
NOTE: The SAROS is BTP compensated. If measuring concentration and/or flow with a device that is non-Argon compensated and non-
BTP compensated, an additional 0.10 LPM should be added to the flow rate recorded by the testing equipment. The VT PLUS HF Gas
Flow Analyzer manufactured by FLUKE Biomedical is not BTP or Argon compensated.
NOTE: Be sure to used standard oxygen-compatible tubing. The tubing from SAROS to the testing device should be a single continuous
piece with no restrictions in line.
1) Verify continuous flow settings C3 and C2 using the following procedure:
a) Turn on the SAROS and set the flow to C3 (3.0 LPM). Allow the unit to run for a minimum of 5 minutes to stabilize before testing.
b) Verify the O concentration is within 90-96% and record the reading.
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c) Record a 60 second running average for the flow rate. Verify the 60 second average is within 2.70 - 3.30 LPM. If using a non-Argon
or Non-BTP compensated measuring device, verify the 60 second average is within 2.60 – 3.20 LPM.
d) Adjust the flow setting to C2 (2.0 LPM). Allow the unit to run for a minimum of 5 minutes to stabilize before testing.
e) Verify the O concentration is within 90-96% and record the reading.
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36 | 9735-SEQ H
Oxygen Anylizer that includes the
capability to measure both flow rate
(LPM and mL) and Oxygen con-
centration/purity % for flow rates
between 1-3 LPM.
Operator & Service Manual
Decrease flow button
Increase flow button
Vent to
atmosphere