Clean bench for the pharmaceutical industry LF1

for research laboratoriesfor the food industryfor powder handling

Product overview
LF1 is a modular, mobile laminar flow cabinet designed for demanding processes. It provides a controlled, particle-free and microbiologically clean environment — ideal for processing, packaging, transport or assembly in pharmaceutical, food and technical sectors. The flexible modular system allows individual configuration, expansion and accessory integration to quickly create an economical cleanroom workstation.

Applications

• Particle-sensitive processes
• Sterile and aseptic operations
• Pharmaceutical production
• Food handling and packaging
• Medical device manufacturing
• Cosmetics
• Chemical industry
• Plastics processing
• Surface technology

Processing (examples)

• Aseptic filling of liquids or powders
• Production of sterile products
• Preparation and packaging of active ingredients
• Operator protection when handling sensitive substances
• Hygienic handling of open foodstuffs
• Packaging under clean air to extend shelf life
• Quality control under defined hygienic conditions

Laboratories & research (examples)

• Microbiological and chemical analyses
• Sample preparation without contamination risk
• Cell culture and biotechnology applications

Production & assembly (examples)

• Protection of sensitive assemblies (electronics, coated surfaces, optical systems)
• Cleanroom assembly of medical devices and sensors
• Prevention of dust deposition during manual operations
• Particle-free assembly tasks
• Use in potentially explosive areas (ATEX)

Temporary use / retrofit

• Enclosure of conveyors, chutes or machine areas
• Creation of ultra-clean zones within cleanrooms
• Mobile cleanroom islands without structural work
• Use as personnel or material airlock
• Ideal for pilot production, product transfer or temporary needs

Design & operating principle
The LF1 generates a low-turbulence laminar displacement flow using two quiet cleanroom fans and an integrated HEPA filter system (H14). Ambient air is drawn in through top prefilters, cleaned by HEPA filters and uniformly discharged downward into the work area. Air velocity is precisely adjustable, typically between 0.2 and 0.5 m/s. The cabinet is air-neutral and does not change the room air balance. Flow speed is set via an external programming device to prevent unauthorized changes.

Operation & integration
Start-up is via a touch panel with separate switches for lighting and ventilation. A monitoring function indicates HEPA filter wear and laminar flow formation. Optional modules (e.g. differential pressure display, activated carbon filtration) can be added. The base version includes all components for standard use; the cabinet is mobile, connectable and can operate freestanding, suspended from the ceiling or integrated into existing systems.

Advantages

• Process security: defined, shielded process environment
• Reproducible cleanliness: ISO class 5 with H14 filters and laminar flow (ISO 4 possible in special configuration)
• ATEX version available
• Optional activated carbon filter for gaseous substances
• Integrated monitoring of laminar flow and HEPA wear
• Hygienic construction in stainless steel, easy to clean
• Long service life (>20 years with quality components)
• Mobile & flexible: castors, height-adjustable feet, easy transport
• Interchangeable prefilters (G4, F7, activated carbon)
• Fast deployment and short assembly times
• Energy-efficient & low noise (< 60 dB(A) at 0.45 m/s)
• Modular & extensible: connectable units (double, triple cabins etc.)
• Wide accessory range: furniture, controls, curtains, sockets, etc.
• Neutral in room air balance: no impact on room pressure relations
• Optional validation and documentation adaptation available

Delivery scope (standard)

• LF1 cabinet with G4 prefilter and H14 filter
• Front curtain/skirt
• Side and rear lamella curtains (down to 10 cm above floor)
• 4x supports selectable with castor or base cap
• Basic system documentation

Maintenance & servicing
Regular maintenance ensures air quality and reliable operation. The LF1 is optimized for simple servicing; all filters are changed from above. Recommended annual tasks:

• Prefilter replacement
• Cleanliness class measurement
• Air velocity measurement
• Filter wear assessment

The prefilter can be changed tool-free by trained staff. HEPA replacement is condition-based (approx. every 5–8 years) and should be performed by qualified technicians.

Technical data
230 V / 3~400 V / ATEX 3~400 V
Airflow principle: laminar displacement flow
Achievable cleanroom class (ISO 14644-1): ISO 5 (ISO 4 possible in special configuration)
Volume flow through cleanroom fans: V = 3900 m³/h (at 0.45 m/s per GMP), Vmax = 7500 m³/h (at 0.8 m/s)
Sound level (DIN EN ISO 11201): 60 dB(A) LAF (at 0.45 m/s airspeed)
Power supply: 230 V/50 Hz or 3~400 V/50 Hz
Current consumption: 1.90 A / 1.60 A / 1.40 A (variant-dependent)
Motor power: 2 x 0.50 kW / 2 x 0.84 kW / 2 x 0.73 kW (variant-dependent)
BUS connectivity: MOD-Bus; voltage-controlled
Prefilters: optional G4 (ISO Coarse ≥60-95%), F7 (ISO ePM1 ≥50%), activated carbon
HEPA filter: H14 (MPPS ≥ 99.995%)
Fan protection rating: IP20 / IP54 / IP44 THCL 155; Ex II 2 G c IIB T3 (variant-dependent)
Operating switches: On/Off; lighting On/Off
Illumination: 500 LUX
Material: stainless steel 1.4301 brushed
Net weight without accessories: approx. 250 kg (320 kg with return-air duct)
Permissible ambient temperature: +10 °C to +40 °C