3
SECTION 1: OPERATION OF THE CABINET
Starting the extract fan
The method of starting the extract system may differ depending on the installation and
specification.
1. The extract system may have a starter / on/off buttons near the fume cupboard
2. The extract system may be linked to the fume cupboard alarm panel
3. The extract system may be controlled by a remote system or BMS
Before operating the fume, cupboard ensure that the airflow alarm has been properly calibrated
(see separate calibration booklet)
On successful starting of the extract fan, the airflow alarm panel should display a green light. If a
red flashing light and audible beeping is encountered, please close the sash and report to
laboratory supervisor.
(Check to see if alarm panel has been calibrated)
Sash Stop (High)
The glass sash can be raised to its maximum safe height of 500mm for access to the fume
cupboard chamber.
The sash will automatically stop at this height.
At all times make sure to close the sash fully, thus providing
maximum protection to the user. If large equipment is to be
loaded into the fume cupboard chamber, the sash can be
raised further by pushing the sash restrictor knob upwards,
once the sash is lowered the sash stop will automatically reset.
Note: when raising the sash above 500mm an audible alarm
will be heard and a red flashing light will appear on the sash
high button of the control panel. Once the sash is lowered below 500mm the sash high button
light will return to green.
Sash Stop (Low)
When the glass sash is fully closed, there will be a 50mm gap at the bottom, this is intentional.
Stopping the extract fan
To switch the extract fan off press the fan OFF button on the control panel / or local stop start.
We recommend running the fan several minutes after an experiment has been completed to
ensure removal of all fumes.
As a matter of safety please ensure that the sash is always closed unless loading or unloading
equipment.
