Section 6: Flow Calibration Check; Introduction; Flow Rate Check; Flow Calibration - Nellcor NPB-75 Service Manual

SECTION 6: FLOW CALIBRATION CHECK

6.1

INTRODUCTION

6.2

FLOW RATE CHECK

6.1 Introduction
6.2 Flow Rate Check
6.3 Flow Calibration Process
Perform a Flow Calibration Check after replacing the Flow System and/or
Pump. Flow Calibration Check includes Flow Rate Check and Flow
Calibration Process.
To perform the Flow Rate Check, follow the steps below:
1. Connect the FilterLine to the handheld capnograph/pulse oximeter.
2. Turn on the monitor.
3. Connect the other end of the FilterLine to the Flow meter gas
outlet.
4. Access the Flow Calibration screen of the Service Mode, refer to
Table 6-1: "Flow Calibration".
5. Check that the Flow Meter reading is 50 ±5 ml/min. (at sea level)
If the Flow Meter reading is 50 ±5 ml/min:
5a Perform Flow Calibration Process, refer to section 6.3 "Flow
Calibration Process".
If the Flow Meter reading is not 50 ±5 ml/min:
5b Change the pump voltage value until the flow rate displayed
in the flow meter is 50 ±5 ml/min, refer to Section 4: Service
Mode, Table 4-5: "Accessing Flow Calibration".
5c Perform Flow Rate Check
5d Perform Flow Calibration Process, section 6.3 "Flow
Calibration Process".
If you cannot set the flow rate to 50 ±5 ml/min after adjusting the
pump voltage value:
5e Change the Flow System, refer to section 7.6 "Replacing the
Flow System".
5f Perform Flow Rate Check
5g Perform Flow Calibration Process.
If after changing the Flow System you still cannot set the flow rate
display in the flow meter to 50 ±5 ml/min:
5h Change the Pump, refer to section 7.5 "Replacing the Pump".
5i Perform Flow Rate Check
5j Perform Flow Calibration Process.
6-1