Germfree BBF 2 - Page 17

Class II, Type A2 Biosafety Cabinet
User Manual
17
Trouble Possible Causes Remedy
Low velocity air
Low voltage on house current
Measure voltage – contact
certification company
Filter loaded
Replace filters – contact
certification company
Improper adjustment of blower
motor
Adjust to proper reading on
Magnehelic gauge – contact
certification company
Obstruction in plenum Remove obstruction
Leak between blower and
plenum
Repair leak – contact certification
company
High velocity air
Exhaust filter rupture
Replace Filters – Contact
certification company
Supply filter rupture
Repair – contact certification
company
Supply filter gasket leak
Find and repair leak – contact
certification company
Exhaust air outlet obstruction Remove obstruction
Improper adjustment of blower
motor speed control
Adjust to proper reading on
Magnehelic gauge
Non-laminar airflow
Large object obstructing airflow Remove item
Large leak in supply filter
Replace Filters – Contact
certification company