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Dry-Flex L

Colortronic Dry-Flex L


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For the drying of thermoplastic granules and regrind before processing, in order to remove all remaining moisture - irrespective of climate or ambient air conditions.

Rugged, modular construction

Dry-Flex dehumidified air dryers are modular and extremely flexible systems that can be individually adapted to meet all requirements. The dry air capacity can be adapted from 700 m³ to 1000 m³. The dryers can be easily upgraded and their air capacity can be increased as production requirements develop.

Colortronic dry air dryers operate on the principle of absorption. Under this principle, the air is not heated, rather the moisture is absorbed and removed from it inside the drying hopper. Through this technology plastic granules can be dried to extremely low residual moisture levels (i.e. 0.002% with PET). Colortronic dry air dryers have 2 drying cells which continuously maintain a dew point level of up to -60 °C. Because the air flow is constant, zero temperature change is maintained during the drying process.

Colortronic dry air dryers are virtually maintenance-free. Only the air filters require routine cleaning or exchanging.

Performance

  • Air drying capacity: 470 m³/hr / 1000 m³/hr
  • Operating voltage: 400 V (+/- 10%), 3 AC, 50 Hz
  • Average dewpoint temperature of -50 °C (-76 °F)

Technical Information

  • Standard control:
    PLC control
    Dry contact alarm output
  • Maintenance-free pneumatic air valves
  • Automatic clock or timer
  • Safety temperature limiter for all heaters
  • Decentralised temperature controls

Optional Equipment

  • Dew-point dependent regeneration switch with selectable dew point for process control with display
  • Return air cooler for processing temperatures above 120 °C (250 °F)
  • Pre-air filter
  • Condensation collection chamber
  • Dwell-time monitoring at the drying hopper
  • Special voltage
  • Comfort control:
    S7 PLC control
    Touch screen display for centralised monitoring and controlling of the dryer functions
    Dry contact alarm output
    Optional blower control for regulated dry air quantity
    Optional metered flapper control for automatic air distribution with Fuzzy Logic
    Optional throughput control for drying hoppers (in conjunction with a Colortronic conveying system)
    Optional communication interface