Faster ASEPTIC, Operating And Maintenance Manual

Page: 42 / 68

a D:GROUP Company
00254EN – Rev. 01 – 11/2012 42
13.F CONTROL OF ALARMS
ALARM FOR MISFUNCTIONING OF MAIN MOTOR-FAN (LAF)
This alarm can be simulated by disconnecting the feeding cables of the main motor-fan. When the isolator is
switched on and the “stand-by” period is over, check that the red light of the relevant alarm and the visual and
sound (buzzer) signals start.
ALARM FOR MISFUNCTIONING OF SECONDARY MOTOR-FAN (SUCTION)
Also this alarm can be simulated by disconnecting the feeding cables of the suction motor-fan. When the
isolator is switched on and the “stand-by” period is over, check that the red light of the relevant alarm and the
visual and sound (buzzer) signals start.
ALARM FOR REDUCTION OF THE PRESSURE CAPACITY
To verify this alarm, gradually remove one of the front gloves at the end of stand-by period and check that the
red light of the relevant alarm and the visual and sound (buzzer) signals start. Furthermore check that when
the glove is back in the correct position, the alarm stops.
ALARM FOR OPENING OF THE FRONT WINDOW OF THE ISOLATOR
To verify this alarm it is enough you move the front window from its standard work position removing the four
knobs and check that the red light of the relevant alarm and the visual and sound (buzzer) signals start. Re-
position the window in its standard work position and check that the alarm stops.
ALARM FOR REDUCTION OF LAMINAR AIRFLOW VELOCITY IN THE WORK CHAMBER
During the normal working of the isolator, cover the work surface almost completely with a PVC or paper
sheets and check that the relevant red light switches on. When the correct operating conditions of the laminar
airflow are restored, the alarm will stop.
OTHER ALARMS
With the help of FASTER’s technicians also the alarms for LAF and internal pressure below the minimum
threshold or over the maximum threshold can be checked