• Certified ISO Grade Design: ISO 5
• Unit of Measure: EA
Terra Universal WhisperFlow® Filter Fan Units WhisperFlow Cleanroom HEPA Fan Filter Unit Stainless Steel WhisperFlow Fan and Filter Units, 2' x 4' Smart WhisperFlow Fan Filter Unit with EC Motor Room Side Replaceable WhisperFlow® Fan Filter Units (FFUs) Explosion-Proof Softwall Cleanroom Ducted HEPA Filter Unit, 2' x 4'
WhiperFlow Fan FIlter Units features internal baffling and adodized an aluminum diffuser that provide uniform air speed across the filter face for ISO-compliant laminar flow of HEPA or ULPA-filtered air.
Stainless Steel Fan/Filter Units feature a corrosion-resistant, ultra-smooth housing, filter frame and diffuser with ULPA filter for aseptic facilities requiring frequent sterilization; WhisperFlow® blffling system promote uniform air velocity across filter face.
Smart WhisperFlow® Fan Filter Units feature electronically commutated (EC) motors for improved energy efficiency, low noise, remote speed control and pressure balancing.
Room-Side Replaceable (RSR) WhisperFlow™ Fan/Filter Units allow HEPA or ULPA filter replacement from inside of the cleanroom; WhisperFlow® baffle system and anodized aluminum diffuser promote uniform air velocity across filter face.
This Class I, Division 1 softwall cleanroom features explosion-proof fan/filter units connected with sealed conduit to explosion-proof junction boxes.
Ducted filter unit provides HEPA- or ULPA-filtered air to an enclosure (requires remote air handler). WhisperFlow baffling system ensures uniform face velocity (2 x 4 model shown).
Knowing when to replace a HEPA or ULPA filter can be challenging. Terra's Filter Replacement Alarm can help! The module monitors the back-pressure of the filter and alerts cleanroom personnel when replacement is needed.
FFU motor damage may occur from over-work due to building pressure, and even lead to electrical failure or dangerous fire hazards. Filter replacement is much more economical than FFU replacement or room rewire, and doesn't require time-consuming operational shutdown.
How does it work? Pressure within the space between the blower and the filter will increase over time as more and more particles accumulate in the filter. The system's Photohelic® gauge features two manually adjustable needles that are used to mark the original backpressure reading and the maximum acceptable level (typically double the backpressure reading of a new filter).
The gauge connects to the nearest fan/filter unit (FFU) equipped with a Challenge Port (Part #6601-99) and displays the backpressure created within the FFU. An LED indicator light above the gauge will flash, and a buzzer will sound, when the pressure exceeds this set limit. Personnel are then notified that the room's HEPA or ULPA filters should be replaced. An override switch silences the buzzer, but the light continues to flash until the filter is replaced.
On a tight schedule? Choose FasTrak 24/7 Priority Service to help meet your critical schedule for Terra-manufactured products, either before or after your order is placed.*
Call for pricing. FasTrak service fees cover costs of additional services only, without additional profit.
* Terra's FasTrak services limited guarantee: to ship on the ESD or date specified OR to refund up to 100% of FasTrak charges. This guarantee covers no direct, special, consequential or other damages and is strictly limited to up to 100% of the amount paid for FasTrak service. When a specified ship date is missed due to factors outside Terra's control (vendor performance, deliveries by shipping companies, etc.) and random factors such as accidents, the credit of up to 100% of the FasTrak 24/7 may not apply. FasTrak service requested after order placement will be quoted and accepted based on available time remaining before required ship date.
