Choice Of Room - MIL'S MINIVAC 1 PS Manual De Operación Y Mantenimiento

Case n°2
FLEXO time (8 minutes)
During the FLEXO time, if the pressure drops below the "Stop Motor" threshold, the vacuum pump is not
stopped.
At the end of the FLEXO time, if the pressure is below the "Stop Motor" threshold, the vacuum pump is
stopped.
Case n°3
FLEXO time (8 minutes)
During the FLEXO time, if the pressure reaches the "High pressure Stop" threshold, the vacuum pump is
stopped. It means that the consumption flow of the establishment is limited.

CHOICE OF ROOM

The unit must be located in a clean, non-humid, non-saline, dustless and ventilated local whose the
temperature should be between +5C and +40C.
Forced ventilation controlled by a thermostat must be installed to ensure adequate room ventilation.
The following formula can be used to size the fan:
∆ °
With:
Q = Ventilation volume (m³/h)
P = Compressor energy consumption (kW)
ΔT = Temperature difference between the local and outdoor
1250 = Volumetric heat capacity Cp (J.m³.K -1 )
520713-00
MINIVAC 1/2/3 PS & ARICA
End of FLEXO time
Start-up (-650 mbar)
Motor stop (-750 mbar)
High pressure stop (-820 or -870 mbar)
On
Off
Start-up (-650 mbar)
Motor stop (-750 mbar)
High pressure stop (-820 or -870 mbar)
On
Off
∆ °
Example : Vacuum pump power 16.5 kW
ΔT eligible = 10°C
.
The air inlet area must be dimensioned such that the flow rate does not exceed 3 m/s.
(Extreme tolerance of 5 m/s).
For information purposes, the table below gives the amounts of heat that must be extracted, according to
the installed capacity in kW
Total
installed Heat released
capacity
kW kW/h kJ/h Th/h
5 5.22 18792 4.3
10 10.45 37620 8.6
15 15.67 56512 12.9
20 20.90 75240 17.2
25 26.12 94032 21.5
30 31.35 112860 25.8
The person in charge of the installation has overall responsibility of the product environment requirements.
He is also in charge of setting up methods of struggle against fire and to protect vacuum units against shocks,
flooding, earthquake and corrosion.
The technician or exploiting is responsible for building construction and civil engineering infrastructures or
earthwork.
Outdoor deadline pressure (snow, wind, rain..) must be taken into account.
Environmental constraints must be managed.
According to the standards NFS99-175 (§ 5-7-3), ISO 10083, ISO 7396-1 (§ 5-8) vacuum units must not be in
the same room as O concentrator, gas bottles and non-cryogenic liquid.
2
/
. ²
Ventilation of room
Ventilation Air inlet area
flow rate of 3 m/s
kCal/h
m³/h (m 2 )
4300 1440 0.14
8600 2880 0.28
12900 4320 0.42
17200 5760 0.56
21500 7200 0.7
25800 8640 0.84
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