entering the opening of the work area has been identified when designs the Biosafety Cabinet. The
test should be conformed the rules of the NSF49. The opening air velocity testing data see the
APPENDIX 1.
To adjust the fan speed adjustment should be according to the data specified in the APPENDIX 1.
To set the air velocity of the opening work area correctly.
We emphasis again that only the qualified people can use the calibrated equipment to carry out the
adjustments. If there is some difficulties PLS contact the manufacturer.
Note: the adjustments must be made in conjunction with the down flow air velocity profiling section
3. And it is necessary to have a balance test between them.
3) Downflow air velocity:
The equipment should be balanced by it. And generally only the adjustment outlined in section 1.7
required. However when the HEPA filter blocked for more accumulations the readings on the static
pressure monitor increased (located on the control panel). The fan speed needs to adjust so that can
rebuild the correct air velocity within the working chamber. The equipment designed the air split.
And we can control the exhaust and inflow air ratio by adjusting the positions of the grids in the air
split. The setting is done in the factory and generally need no adjustment. The equipment correct
settings and the testing data see the APPENDIX 1.
NOTE: The adjustment of the balance of the air velocity must be carried out by the professional
person.
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