Envirco BSC - Manual (Page 21)

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(f) Remove screws to the front under panel. Remove the front under panel.
(g) Remove the four screws under the air screen and take off the air screen.
(h) Loosen the screws for the filter and remove the supply filter.
(i) Place the screws and the parts aside and install the new HEPA filter.
Exhaust filter
(k) To the right of the motor there is a spring. Release the self-tapping screw on the spring
and take off tubular motor.
(l) Remove the screws fixed on the front panel and remove the front panel.
(m)Remove the screws on the front pressure belt and take off the front pressure belt and
tighten the bolts on the back pressure belt to the minimum.
(n) Pull out the exhaust filter
(o)Put the removed bolts and components aside to install the new filter.
5.1.3 Filter Installation
(a)Carefully place the supply HEPA in position.
(b)Snug tighten the bolts in a uniform manner,finish by retightening until secure.
(c)Put the air screen between two cards in the cabinet and fix the four bolts in the front.
(d)The above operations should be performed carefully in order to prevent damage to the filter
and the working surface.
(e)Place the frontbottom panel.
(f)Place the exhaust filter in position carefully and reinstall the hold-down bars.
(g)Place the fronttop panel.
(h)Put motor on the standing base; adjust the position and fasten the spring.
(i)Raise the glass and press the small column head on glass folder. Insert the wire rope and
the glass door height should be the same s pre-disassembly.
(j)Install with glass track and boards.
(k)Put down the control panel.
(l)Test supply and exhaust filters by delivering electricity, Reset inflow wind speed and down
flow wind speed in accordance with Appendix 1.
5.1.4Motor Replacement
(a)Sterile safety cabinet: If the equipment has used poisonous chemical objects, please
coordinate with your Safety Office.
(b) Cut off the power.
(c)Open the operational panel and turn it horizontal.
(d)Disassemble the side board of either side.
(e)Use a hexagonal wrench to unload the same side fixed glass guide bolt and move out of