Introduction; Intended Users Of This Manual; Nasal Cpap; Features Of The Vpap Iii, Vpap Iii St - ResMed VPAP III, VPAP III ST, VPAP III ST-A Service Manual

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Introduction

This manual is a guide to servicing and repairing the VPAP III, VPAP III ST and VPAP III ST-A flow
generator and humidifier. It is written for ResMed distributors, and gives instructions for replacing
subassemblies and for recalibration as appropriate. Work at the component level will normally be
carried out by ResMed.

Intended users of this manual

Before attempting any repair work, please ensure that you:
• are familiar with the operating manual and the clinical manual for the flow generator
• have suitable electrical and mechanical training to satisfy the requirements of the relevant
regulatory authorities
• use the correct antistatic procedures described in this manual
Use only approved ResMed parts and never use parts that have failed, show excessive wear, have
been contaminated, or are ineffective for their intended use.
Note: Schematics of all PCBs in this flow generator are available to authorised service
centres. To order, please contact your local ResMed office.

Nasal CPAP

Nasal Positive Airway Pressure systems are used to treat obstructive sleep apnea, a disorder that
causes a physical obstruction in a person's airway while sleeping. The principle of treatment is that
filtered air is delivered by a flow generator through flexible tubing to a nasal mask worn by the
patient while sleeping. The flow generator maintains a positive pressure in the patient's airway
which acts as a pneumatic splint, preventing the airway from collapsing during sleep.

Features of the VPAP III, VPAP III ST

The VPAP III system provides continuous positive airway pressure (CPAP) and bi-level therapy to
patients with obstructive sleep apnea (OSA). The device delivers a treatment pressure with a
maximum range of 2 to 25 cm H 2 O depending on the unit's configuration.
The data storage and processing capabilities of the VPAP system facilitate patient management.
The system provides summary data for a variety of time intervals, which can be viewed via the
LCD menus. The patient's usage hours, mask leak, tidal volume, respiratory rate, minute
ventilation, apnoea + hypopnoea index (AHI), and apnoea index (AI) are displayed in the Results
section of the Clinical menu.

Features of the VPAP III ST-A

The VPAP III ST-A provides bi-level therapy. It combines the features of the VPAP III series along
with adjustable trigger and cycle thresholds, and a range of clinician and patient alarms.The device
delivers a treatment pressure with a maximum range of 2 to 30 cm H 2 O depending on the unit's
configuration.

HumidAire 2i™

The HumidAire 2i is designed to integrate with the VPAP III system to form a single heated
humidification and VPAP unit.

ResLink

The ResLink clinical therapy management module is designed to integrate with the VPAP III
system. It provides greater insights into therapy and visible, objective evidence that the device is
delivering effective ventilation during sleep.
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