Faster ASEPTIC, Руководство по эксплуатации и техническому обслуживанию

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a D:GROUP Company
00254EN – Rev. 01 – 11/2012 8
4 OPERATION
4.A SYSTEM AND PERFORMANCES CONTROLS
The ASEPTIC isolator is provided with an automatic regulation system to keep constant the unidirectional
down flow air speed and the positive pressure in the work chamber, even with the progressive clogging of the
HEPA filters up to the maximum pressure supported by the motor-fans.
The suction fan provides to keep 100 Pa, positive pressure, within the work chamber while the unidirectional
down flow air velocity, provided by the main fan, is 0.45 m/s.
The soft-touch control panel is microprocessor-controlled with a display showing all relevant data with regard
to the operating functions, the different alarms and the error messages.
When the isolator is running if you open the front glass, this action activates an audible and visual alarm,
which cannot be silenced since there is no protection for operator.
When the isolator is off the front glass can be opened completely by unscrewing the four knobs that fasten
the glass.
To optimize the visibility inside the work chamber, the isolator is provided with an ergonomically angled front
window (approx. 7 degrees sloping as to the vertical)
4.B REMOTE SIGNALS
On the ceiling of the isolator a PVC box contains 3 terminal clamps with the following dry contacts:
A. Ventilation status (ON/OFF)
It is possible to obtain a 12 Vdc output to connect a led light or alternatively a Normally Open voltage free
contact to be connected to an external circuit.
There are two different working possibilities selectable in the software:
1 The signal starts when ventilation is turned ON and stops when ventilation is OFF.
2 The signal is flashing during the start up phase of the ventilation and is ON when the correct air
flow/pressure conditions are reached.
B. Correct air flow conditions
It is possible to obtain a 12 Vdc output to connect a led light or alternatively a Normally Open voltage free
contact to be connected to an external circuit. That signal is closed when air flow rate is in the correct range
and it is open in case of any flow/pressure alarm.
C. External consent
On request with a software selection it is possible to allow ventilation to be turned ON by a remote volt free
contact. When the ventilation is turned ON the isolator stay in stand by (start up) till the remote normally open
contact is closed.
If during normal ventilation the remote contact is open the following message will appear “REMOTE
CONTACT OFF” and the operator has to switch OFF ventilation as soon as possible and then check the
reasons of the failure.