NuAire LabGard ES NU-543-300S, Operation And Maintenance Manual

Page: 17 / 72

OM0239 Page 17 of 72
April 2021
5.2.5 Plumbing Services
Service ball valves with the type of service specified by the removable button on the handle are located in the
work zone. The service ball valves are not recommended for pressure over 75 p.s.i. (5.2 BAR). Reducing valves
should be installed external to the cabinet if necessary. Service ball valves should never be used for flammable
gasses or oxygen service. A special needle valve for oxygen service or certified valve is required and available upon
request.
External connection is to 3/8 inch NPT coupling in the inner sidewalls. Connection to plant utilities should be made
with proper materials for the individual service and according to national and/or local codes. Observe all labels
pertaining to the type of service and operating pressure.
5.2.6 Electrical Services
The NU-543S series Biosafety Cabinets may be "hardwired" (optional) or plugged into an outlet with protective
earthing connection with the standard power cord. The cabinet requires 230 VAC, 50/60 Hz, single phase (current
rating varies per cabinet size, reference Electrical/Environmental Requirements). It is recommended that power to
the cabinet, whether hardwired or plug connected, be on its own branch circuit, protected with a circuit breaker at
the distribution panel near the cabinet.
5.2.7 Final Assembly
Remove the protective cardboard cover over the exhaust HEPA filter located under the protective screen if in
place. . The exterior surface and viewing glass are easily cleaned with any mild household detergent cleaner using
a soft cloth. Harsh chemicals, solvent-type cleaners and abrasive cleaners should not be used.
Do not attempt to clean the HEPA filter media. Cabinet interior walls or work surface are easily cleaned with any
mild household detergent cleaner using a soft cloth. Turn the cabinet on and let it operate for 60 minutes before
using it as a LFBSC.