389D001 Rev G 8 of 94
The FlexAIR Canopy Exhaust Connection has a 12” [305 mm] diameter connection with a 10” [254mm]
diameter spun inner baffle. It mounts directly over the exhaust filter and has flaps to reduce the amount of room
air being exhausted. A sensor that detects when the flap opens during low duct exhaust conditions triggers a low
flow exhaust alarm in the cabinet.
Optional reducing collars are available to adapt the FlexAIR exhaust connection to smaller duct diameters.
Final Connections and Tests
1. The plumbing connection to the service petcocks must be made with great care because the effluent
from a safety cabinet may be biologically hazardous. Consult the facility safety officer regarding these
connections to assure they are properly connected and filtered if required. When present, petcocks are
factory piped within the cabinet. The external connection consists of a 3/8” compression tube fitting at
the rear, top, or bottom of the cabinet outer sidewall seal panel. Qualified personnel with proper
materials and technique should make connection to plant utilities per NFPA
2. Check that the drain valve is closed or the drain coupling is properly capped.
3. Check for proper installation of the cable port
4. Connect the cabinet to the dedicated power supply circuit as noted in Section I under “Electrical
Service”
5. If so equipped, connect the relay(s) of the optional cabinet monitor wiring package to the external
HVAC building automation system
6. Position the view screen at the correct access opening height indicated by the arrow labels on each side
of the view screen guides.
7. Turn on the blower. The indicator light will illuminate and the running blower will make an audible
sound.
8. Turn on the fluorescent light. The indicator light will illuminate along with the interior work area. Check
the following conditions:
The fluorescent light will not operate unless the blower switch is on.
The fluorescent light will not operate when the view screen is closed.
9. If your cabinet has the optional ultraviolet light (UV), lower the view screen to its fully closed position
and turn the UV light on to make sure it is operational.
NOTE: The UV light option features an interlock that prohibits its operation unless the view
screen is fully closed. The fluorescent lamp and UV lamp will not operate simultaneously.
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