Explosion-proof FFU meets NEC requirements for Class I/Class II, Division 1 Hazardous locations
Non-sparking motor, mounted in a cast-iron, explosion-proof housing
Cleanroom FFU provides avg velocity of 90+ FPM, airflow of 640+ CFM
Internal baffling plate and diffuser panel provide quiet and uniform air flow across the filter face
Minimize cleanroom service downtime with room-side-replaceable (RSR) fan filter units
Explosioon-proof FFU permits single speed operation (on/off).
Proper installation of explosion proof equipment is critical to maintaining the explosion-proof protection aspects of the system.
Customers must hard wire the motor/ffu in correlation to their specified voltage at time of installation Therefore all wiring for explosion proof systems should be done in the field per local code by a licensed electrician.
Room-side-replaceable filter units feature a Gel-sealed filter and easy-open clips to allow fast filter replacement from below without breaching the cleanroom ceiling
Direct-drive 0.25HP fan-cooled motor is designed for continuous-duty operation
All FFU data is based on a standalone unit using 1” prefilter and clean filters.
Data will vary depending on filter media and configurations with other products/systems, such as ductwork or hoods.
See performance data and submittal sheets for additional information
Specifications
• Unit of Measure: of 1
Helena
• Marks & Listings: UL, ULC
Fan Filter Units
Terra Universal WhisperFlow® Filter Fan Units
Explosion-Proof Fan-Filter Unit
Overview video of Terra Universal's comprehensive portfolio of filter fan unitsTerra Universal WhisperFlow® Filter Fan UnitsOverview video of Terra Universal's comprehensive portfolio of filter fan units
Explosion-Proof WhisperFlow® Fan-Filter Units use sealed or non-sparking components for safe operation around flammable/explosive vapors and dustsExplosion-Proof Fan-Filter UnitExplosion-Proof WhisperFlow® Fan-Filter Units use sealed or non-sparking components for safe operation around flammable/explosive vapors and dusts; meet NEC standard for Class I, Division 1 hazardous locations.
Features and Benefits
Diffuser Panel Promotes Air Flow Uniformity and Protects Filter Integrity
Unlike other manufacturers, Terra’s FFUs include a unique perforated panel beneath the filter, acting as a shower head, to guarantee filter protection and laminar air flow uniformity, which prevents localized air swirling, particle build-up and turbulence.
Protect Against Contaminants and Pathogens
HEPA and ULPA filters help capture many bacteria, viruses (COVID-19), and mold spores that contribute to a host of infections for both humans and plant/animal tissue cultures
Gel-Filled Channel on Room-Side Replaceable Filter
Gel-filled channel on room-side replaceable filter forms a tight seal against knife edge on fan housing, allowing fast, simple filter replacement from inside the cleanroom without the need for costly cleanroom shut-down.
Explosion-Proof Power Switches
UL-rated explosion-proof switches are connected to the lights and blowers using specialized conduit with potted fittings. All electrical components are sealed to eliminate potential ignition points.
Explosion-Proof Potted Fittings
Conduit is filled with an expanding cement mixture to isolate explosion-proof components from potential sources of ignition; explosion-proof fittings meet requirements of NEC for Class I, Division 1 hazardous locations.
Pre-Filter Grounding Clip
A grounding wire connects the body of the Explosion-Proof FFU to a metal wireframe embedded in the pre-filter as a safeguard against sparking.
Non-Sparking Direct-Drive Motor
Explosion-proof motors use a non-sparking polypropylene fan and cast-iron brackets attached to the heavy duty rolled steel frame
Explosion-Proof Junction Box
The reinforced junction box of the explosion-proof fan filter unit is built to withstand and contain an explosive reaction within the conduit system.
Airflow Uniformity Improves Laminar Flow
Non-uniform air speeds produce turbulence that can recirculate particles into the air stream. Unique WhisperFlow® FFU baffling system and anodized diffuser plate promotes uniform laminar airflow to minimize turbulence and effectively carry away contaminating particles.
Network of International Reps
Terra employs an international network of more than 20 local sales reps trained to provide comprehensive service on Terra's complete catalog of products
Products Compliant With Your ISO Rating
High-capacity, durable, ISO-compliant system rated for thousands of operating hours.
Popular Accessories
For a full list of accessories, select a product then click Choose Accessories on that product page.
Energy-Efficient Lighting
Energy-efficient LED lighting panels and strips help to lower electrical costs and minimize heat build-up in temperature-controlled environments.
Explosion-Proof 40W LED Light
UL-listed for Class I, Division 1 and 2, Groups C and D areas, this low profile LED light produces 3,600 lumens and operates from 120 to 277VAC, 50/60Hz. The heat-dissipating housing increases the efficiency and lifespan of the LEDs.
Explosion-Proof Power Distribution Module
Explosion-Proof Power Distribution Module (PDM) meets NEC code for a Class I/Division 1 hazardous location; includes all relays, breaks and other cleanroom electrical components
Challenge Port for Fan Filter Unit
Challenge port for Fan/Filter Units simplifies filter leak testing and connection of Filter Backpressure Alarm (shown with optional pressure gauge; must be ordered with FFU).
Safely Mount FFU’s Above Floor for Horizontal Laminar Airflow
The portable FFU base stand can be easily positioned to supply Class 100 horizontal laminar flow into a room or enclosure. It can also be positioned next to sensitive equipment/materials that are mounted close to the floor.
Purchase replacement filters ahead of time to prevent costly operational interruptions and avoid damage to fan blowers caused by excessive backpressure from long overdue filter replacements.
