Envirco BSC - Manual (Page 18)

18
(m) Before calling for service, unplug the cabinet from the wall, wait for 2 minutes, then plug
and try restarting the motor. If motor start-up fails, call Envirco for service.
4.1.6 Differential pressure indication
Differential pressure indication refers to the pressure difference across the filter. The value is
enhanced when the filter loading is increased. The reading is exclusive for each combination
of safety cabinet and filter that corresponds to the previous readings of the same cabinet. It is
normal that the readings gradually increase; however, if the reading increases rapidly, there
are problems and the cabinet is in need of repair. Supply and exhaust differential shares a
display unit and is converted by the supply and exhaust key-press. EW is the exhaust
pressure differential display and DW is the supply pressure differential display.
4.1.7 Use of UV light
Before and after use of the equipment, one should sterilize by UV light more than half an hour.
4.1.8 Use of the electrical outlet
The switch of the outlet located on the control panel has a fuse of 6.3 A on the circuit board for
overload protection of the outlet. The outlet power is 120V 60Hz, maximum current 5A.
4.2 General maintenance
The system seldom needs maintenance except for the routine cleaning and regular on-site
certification. The exact time interval for routine on-site certification should be ascertained by
Safety Office or Safety Committee. The following maintenance will benefit the user and will
prolong the life of the equipment.
4.2.1 Running
The Biosafety Cabinet can continuously work twenty-four hours. All the circuits and motor are
fully protected.
4.2.2 Construction materials maintenance
Figure 1 lists the recommended cleaning method for the different materials.
NOTE: The equipment has a special exterior paint finish and it will be ruined if rubbed
with abrasive powders.