Pressurised Spray and Drying Enclosures with Dry Filtration

ALWO pressurised enclosures for spraying and drying provide a controlled space for paint application and part drying, with mechanical supply and extract air. Pressure and temperature are regulated for the process, and incoming air is filtered before distribution to the rooms.

Two process zones

The standard configuration includes a spray room and a drying room separated by a partition with glazed sliding doors. The enclosure is constructed from 40 mm polyurethane sandwich panels.

Main components

• ALWO V30, V40 or V50 dry-filter extraction wall selected according to enclosure width;
• water floor with metal grating and fill/drain valves, without water recirculation;
• partition with two glazed sliding doors, each 1250 × H2400 mm, between spraying and drying;
• glazed access doors measuring 2000 × H2400 mm for the spraying and drying rooms;
• 1200 mm, 2 × 36 W, IP65 fluorescent luminaires, distributed along the enclosure;
• 500 mm-high air-distribution plenum with ceiling filters selected for the required supply-air quality;
• two vapour-extraction columns for the drying room;
• two air-handling units, AHU 1 and AHU 2, for make-up air, filtration and heating;
• PLC electrical and control panel with variable-frequency drive, temperature control, motor protection and timed sequences.

Sizing and compliance

Supply and extract airflow, differential pressure, temperature, drying cycle and VOC emissions must be calculated for the products and parts being processed. Hazardous-area classification, electrical equipment, fire/explosion protection and air discharge are project-specific; an IP65 rating does not automatically provide ATEX compliance.