Labconco Protector Airo 184 Series, User Manual

Page: 72 / 193

Chapter 6: Maintaining the Protector Filtered Hood
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Original instructions
Quarterly (or more often as required)

Determine the actual airflow face velocity through the sash opening of the
filtered hood where the average reading should be at the specified
velocity. (Use calibrated thermal anemometer or other approved
apparatus).

Replace carbon filters when chemical breakthrough is indicated by the
primary broad organic sensor, target acid gas sensor or time. See “Partial
Filter Replacement” section of this manual in
Chapter 6 .

All weekly activities.
Annually

Replace lights, if necessary.

Replace HEPA filters if the face velocity drops below the recommended
speed as the airflow alarm alerts you.

Have the enclosure validated by a qualified certification technician. See
Certification and Recertification in
Chapter 6 .

All quarterly activities.
Initial Certification
The filtered hood has been designed for an inflow velocity of 60-100 fpm. The
filtered hood should be certified for the proper inflow velocity required by your
Safety Officer.
Re-Certification
Under normal operating conditions, the filtered hood should be recertified at least
annually if serviced. The certifier should perform the following tests.

Airflow Velocity Test
In addition, the following test should also be performed at the user’s discretion:

Smoke Test to determine proper airflow patterns
User Alarm Code List
Listed next is an overview of control panel functions and alarm codes with their
meaning, causes, and solutions.