Troubleshooting - ZOLL AEV Operator's Manual

1. Class I: Basic Insulation: the earth grounding provides a dissipation route under this fault
condition. Under fault conditions with resistances of 100 m Ω or less, the AC/DC converter
shunts the current away and opens the safety fuse or breaker.
Class II - Supplementary Insulation: the impedance of the isolation barrier integral to the AC
2.
power supply provides the protection to the user and patient. Under high voltage fault
conditions, the device relies on isolation of the high voltage internal circuitry from the
equipment's enclosure as the safety countermeasure.
Protection against electric shock does not rely on Basic Insulation only, but includes an
additional safety precaution that prevents accessible metal parts from becoming live should the
basic insulation fail.
Protective grounding testing, typical for many medical devices, is applicable only to Class I
equipment. The ventilator's electrical safety design is not dependent on earth grounding as the
means of protection.

Troubleshooting

You can quickly address common problems by following the alarm mitigation instructions.
Should this device fail to operate properly, verify the integrity of all accessories, ventilator
circuits, and fitting connections. Check all control panel settings and follow the alarm
mitigation instructions provided by the ventilator's Smart Help messages.
Verify that the Fresh Gas/Emergency Air Intake Disk Filter and Foam Filter are not clogged or
dirty. Check for operating power with internal batteries and external power sources.
If the tests above do not resolve an operating problem, service is required. Contact the closest
authorized ZOLL Service Center or the ZOLL Customer Service Department.
906-0731-01-05 Rev. C ZOLL Ventilator Operator's Guide 7-9