Ventilation Units > Flexible Enclosure Ventilation Units

CUSTOM SIZES AND CONFIGURATIONS AVAILABLE UPON REQUEST.

Pressure Control Unit
 AEC PART NUMBER C102604

The Pressure Control Unit (PCU) is a Type 304 stainless steel portable HEPA ventilation unit designed to maintain a positive or negative pressure in a flexible or hard sided enclosure. The filter housings are spun aluminum. The PCU is available with a touchscreen Programmable Logic Controller (PLC) and pressure monitoring system, or with a manual On/Off/Speed control.

PLC Automatic Control
One way to control pressure is to utilize the PLC “feedback” loop that automatically adjusts fan speed to maintain a preset containment pressure (positive or negative). The other method is to manually set the fan speed to the desired enclosure pressure and manually adjust the speed while the PCU is operating. Depending upon the installed configuration, the blower will either add or exhaust HEPA filtered air from the enclosure until the pressure inside of the enclosure stabilizes at the preset value. Should there be a containment breach, the PCU will attempt to maintain the preset pressure point. The PCU is a highly recommended alternative to the use of HEPA vacuum cleaners as ventilation equipment. Vacuum cleaners can cause damage to flexible isolators due to their powerful suction collapsing or tearing the fabric.

HEPA Filter Options
The PCU can be equipped with a HEPA filter on both the supply and exhaust sides of the blower. It can be operated with either one or two filters installed. The HEPA filters can be installed on the upstream side, the downstream side, or for added protection, double HEPA’s can be installed on both ends. This dual filter configuration allows the PCU to operate in either a positive pressure or a negative pressure mode. With new filters, it is capable of moving 150 cfm with one filter installed, or 110 cfm with both filters installed. Interlocks prevent operation with the filter(s) removed or not properly seated. The PCU is capable of passing a filter penetration test with a new filter installed yielding a 99.95% efficiency @ 0.3 micron level. It is ducted using a 3” diameter connection on both the supply and exhaust nipple connections which are located on the filter housings.

Alarm Options
The PCU has the option of being used with a local or remotely located audible and/or visual alarm. The values of duration and deviation can be adjusted by the user to suit their needs. The alarm is triggered when the desired pressure misses the actual internal pressure for more than a preset time period, indicating a significant containment breach, loaded filters or other non-desired conditions. The alarm is silenced by either pressing an “acknowledged” button on the PCU’s touch screen or when the desired pressure matches the actual internal pressure.

FEATURES:

  • Adjustable flow from 0 to 150 CFM under normal operating conditions
  • Flow rate up to 175 CFM in breach conditions
  • Disposable 10” dia. X 12.25” (including nipple connection) HEPA filter on exhaust and/or supply side
  • Capable of double HEPA filtration
  • Pressure sensor, displayed on PLC
  • 3" diameter inlet/discharge collar
  • Continuous duty 48 VDC blower
  • 0.4” w.g. @ 75 CFM
  • UL/CSA listed electrical components, NEC wiring conformance
  • 110/220V 60/50 Hz
  • Dry contacts to signal alarm condition
  • 50 lbs. (nominal)
  • 10.50” long X 12” tall X 10” wide without filters installed

P.O. BOX 890, Groton, CT 06340
T860.446.1889 F860.446.1876
Toll Free 866.857.7249
www.aecpharma.com

NOTE: Information provided is subject to change. Please contact AEC directly for recent modifications.