Thermo Scientific 1300 Series, User Manual

Page: 65 / 130

Description:
• Determines the internal and external behavior of the air movement.
Equipment:
• Cold smoke (titanium tetrachloride)
Method:
• Downflow:
Pass smoke across the centerline of the work surface, 100mm above the
work opening.
• View Screen Retention:
Pass smoke 25 mm behind the window opening, 150 mm above the
work opening.
• Work Opening Edge Retention:
Pass smoke around the entire outside work opening, approximately
38 mm away from the cabinet.
• Window Seal Test:
Pass smoke up both sides and across the top of the window opening
from inside the work area, approximately 50 mm from the edges.
Acceptance:
• No smoke shall have dead spots, reflux or escape the cabinet once drawn
in.
Description:
• Refer to GB 4793.1-1995
Description:
• Verify the unit is integrated properly into the facility.
8-12 1300 Series A2 Thermo Scientific
Section 8
Certification Testing
Airflow Pattern Test
Elect. Leakage , Ground
Resistance, Polarity Tests
Site Installation
Assessment Tests