NuAire LabGard D NU-543-400, Manual

Page: 15 / 70

OM0283 Page 15 of 70
Rev 2 July/2021
5.2 Set-Up Instructions
Remove outer shipping protection (carton or crating). The cabinet is fastened to the base skid and it is usually the best
procedure to leave the skid in place until the cabinet is located in its approximate position to facilitate ease in handling. It
can then be removed from the skid by removing the banding, bolts and screws holding the cabinet to the skid. It may be
necessary to remove the control center in order to gain passage through a doorway. It can easily be removed by following
the instructions on drawing BCD-16301.
It is recommended that no less than two people are present using a
lifting system for placement of the cabinet onto the base stand.
It is not recommended to manually lift the cabinet onto the base stand.
5.2.1 Base Stand Assembly
The base stand is typically shipped knocked down in a separate carton and is assembled per drawing BCD-16385
Once assembled; place the stand in approximate position (ready for cabinet placement onto the base stand). Now
lift the cabinet on top of the base stand and bolt the base stand to the cabinet using two 3/8" - 16 x 3/4" bolts and
washers provided for the front base stand tabs and two 1/4" acorn nuts for the rear weld studs. Place the cabinet
in the desired location.
5.2.2 Leveling
Using a level placed on the work tray, first adjust the leg levelers end to end and then front to back. The NSF
approved leg levelers provide a

3/4" (20mm) adjustment.
5.2.3 Bench Installation (BCD-16300)
Place the cabinet on the bench with approximately a 2" (51mm) overhang clearance for installation of the drain
valve. Place the cabinet in desired location and using RTV caulk, seal all around the base of the cabinet and the
bench. This provides a tight seal to prevent bench spills from migrating under the cabinet.
If the drain valve is desired, (NOTE, CHECK WITH YOUR SAFETY PERSONNEL FOR REGULATORY REQUIREMENTS OF
DRAIN VALVE INSTALLATION) remove the handle from the valve stem to gain clearance for valve body rotation.
Add Loctite 242 (furnished) to the threads and rotate valve body until secure, with the valve stem (for handle) on
the left side. Re-install handle to valve stem. Adjust the cabinet on bench to provide a 2" (51mm) overhang and
seal the interface of the bench and cabinet, using RTV caulk as above.
5.2.4 Gas Service
NuAire doesn't recommend the use of natural gas within the LFBSC, but if gas service is determined to be
necessary for the application, appropriate safety measures must take place. All NuAire LFBSC's have precautionary
warning labels that say the following:
Use of explosive or flammable substances in this cabinet
should be evaluated by your appropriate safety personnel.
Once the determination has been made by the appropriate safety personnel, the application of natural gas must
be performed in accordance to national, state and local codes. IT IS ALSO STRONGLY RECOMMENDED THAT AN
EMERGENCY GAS SHUTOFF VALVE BE PLACED JUST OUTSIDE THE LFBSC ON THE GAS SUPPLY LINE.
All NuAire’s LF BSC’s meet the safety requirements of UL and CSA for Laboratory Equipment . To comply with these
safety requirements, NuAire uses only certified gas valves. If external piping is required, only black pipe is used for
this application.
As previously stated NuAire doesn't recommend the use of natural gas within the LFBSC and ASSUMES NO
RESPONSIBILITY FOR ITS USE. USE AT YOUR OWN RISK. The Bunsen burner flame within the LFBSC not only
contributes to heat build-up; it also disrupts the laminar air stream, which must be maintained for maximum
efficiency. IF THE PROCEDURE DEMANDS USE OF A FLAME, A BUNSEN BURNER WITH ON DEMAND IGNITION IS
STRONGLY RECOMMENDED. DO NOT USE CONSTANT FLAME GAS BURNERS. During use, the Bunsen burner
should be placed to the rear of the workspace where resulting air turbulence will have a minimal effect.
CAUTION
!
CAUTION
!