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World leaders in dehumidification.
USER'S MANUAL
Document version:
EN.033 24.01
Product:
RL-61/61L
Product supplied may differ from that illustrated
Desiccant dehumidifier

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Summary of Contents for DST RL-61

  • Page 1 World leaders in dehumidification. USER’S MANUAL Document version: EN.033 24.01 Product: RL-61/61L Desiccant dehumidifier Product supplied may differ from that illustrated...
  • Page 2 Empty page Seibu Giken DST RL-61, 61L EN.033 24.01...
  • Page 3: Table Of Contents

    6.4 Reset buttons & switches ...........15 7. Functions ............16 7.1 Dehumidification function ...........16 7.1.1 Automatic or Manual ........16 7.1.2 Ventilation modes ..........16 7.1.3 Humidistat connection ........16 7.1.4 0-10VDC connection ........17 7.2 Remote control switch ..........17 RL-61, 61L EN.033 24.01 Seibu Giken DST...
  • Page 4 Empty page Seibu Giken DST RL-61, 61L EN.033 24.01...
  • Page 5 FIGURE 19: C4 PLC with 5.7" color touchscreen ..........20 FIGURE 20: Troubleshooting table and solution ..........21 FIGURE 21: General troubleshooting table and solution ........21 FIGURE 22: Capacity troubleshooting and solution table........22 FIGURE 23: Service chart .................23 RL-61, 61L EN.033 24.01 Seibu Giken DST...
  • Page 6 Empty page Seibu Giken DST RL-61, 61L EN.033 24.01...
  • Page 7: Safety

    This equipment is specifically designed for atmospheric air drying. It is unsuitable 1.6 SAFETY ADVICE REGARDING TRANSPORTATION for any other use. For further advice please contact a DST representative. Unless specifically stated in this manual, the following applications are prohibited:...
  • Page 8: Electrical Installation

    When the unit is no longer in use, dismantle the unit and recycle the components Periodically as defined in this manual means: according to local regulations. Contact a DST representative if you have any • during installation questions.
  • Page 9: Introduction

    In the appendix, a component list details spare parts with articlenumbers as well as the electrical diagram number for the electrical box. If there is a special unit with custom- installed components that list will include a list of installed options. RL-61, 61L EN.033 24.01 Seibu Giken DST...
  • Page 10: Product Description

    3.2 APPLICATIONS DST desiccant-type dehumidifiers are normally used where dry air is essential to the various manufacturing processes used in chemical, pharmaceutical, food or confectionery industries, or where a dry environment is required for the storing and handling of moisture-sensitive products and raw materials.
  • Page 11: Installation

    To avoid incorrect positioning, see the dimensional drawing in the appendix for service space and foot bolt-hole dimensions. 4.2 GENERAL DUCT WORK INSTALLATION The guidelines are to assist the installers and operators to adjust the duct/dehumidifier installation. Consult a DST representative or local mechanical installation company for more information.
  • Page 12: Damper Installation

    Due to the high capacitive currents present in the AC drive, earth leakage circuit breakers may not function properly. Note: This is only applicable if the unit is equipped with a frequency converter. Seibu Giken DST RL-61, 61L EN.033 24.01...
  • Page 13: Humidistat Connections

    Each indicator, standard or optional, are marked on the electrical diagram to indicate whether it is a normally closed or a normally opened circuit. * Standard indicator may differ depending on model and configuration. See electrical diagram for more information. RL-61, 61L EN.033 24.01 Seibu Giken DST...
  • Page 14: Operation Check & Adjustment

    7. If connected, check remote control operation. 8. If connected, check remote alarm function (see 5 above). 9. If connected, check humidistat/electronic humidity controller function. Seibu Giken DST RL-61, 61L EN.033 24.01...
  • Page 15: Operating

    Reset is only required when a operation is halted by hardware failure or triggered a safety mechanism. See troubleshooting for more information. See the electrical diagram for correct layout and information of the reset devices. RL-61, 61L EN.033 24.01 Seibu Giken DST...
  • Page 16: Functions

    Note: AUTO ECO VENT is an option but it is included for DC/DR-50 and RL-60/61/71 when Energy saving 2 or 3 is selected. * Option - Contact a DST representative for more on information on which unit can be fitted with AUTO-ECO VENT.
  • Page 17: 0-10Vdc Connection

    Note: The alarm will not stop the unit. Note: If pressure is not properly adjusted, humid air from the regeneration airflow will infiltrate the process airflow and mix with the dry air. See “9 Troubleshooting” for solutions. RL-61, 61L EN.033 24.01 Seibu Giken DST...
  • Page 18: Regeneration Airflow Guard

    The airflow guard is a warning only and will not shut down the unit or turn on a alarm light. If there is a potential reduced capacity, see “9.3 Capacity troubleshooting” to locate the issue. Seibu Giken DST RL-61, 61L EN.033 24.01...
  • Page 19: Option & Accessory

    EH3 T2 + PLC C2 or an external control signal (BMS + PLC C2), the drying capacity is finely adjusted to accurately maintain the required setpoint (humidity or dew point). Contact a DST representative to view the energi saving option for each specific unit as options across the products range may vary. RL-61, 61L EN.033 24.01...
  • Page 20: Humidity Controller

    The C4 is a touchscreen enabled PLC with multiple I/O and is installed with custom software that allows advanced dehumificiation for a specific need. Add-on modules allows, e.g. remote control using modbus, ethernet using TCP/IP modbus or modem control. FIGURE 19: C4 PLC with 5.7" color touchscreen Consult a DST representative for more information. Seibu Giken DST RL-61, 61L EN.033 24.01...
  • Page 21: Troubleshooting

    Check remote control is set to ‘On/Run’ position and if the cable is undamaged. not appear to be operating. operation. Confirm electric supply and check local isolator is on. FIGURE 21: General troubleshooting table and solution RL-61, 61L EN.033 24.01 Seibu Giken DST...
  • Page 22: Capacity Troubleshooting

    Measured airflows are lower than arrow on fan motor casing. The incoming specified. Change over two of the three incoming phase supply wires. Re-check fan rotation. phase supply is incorrect. FIGURE 22: Capacity troubleshooting and solution table Seibu Giken DST RL-61, 61L EN.033 24.01...
  • Page 23: Maintenance

    Inspect rotor motor - replace if necessary Inspect radial & peripheral seals - replace if worn or damaged Check operation of geared drive motor, drive pully, belt/chain, rotor - adjust as neccessary Inspect rotor for contamination or damage - clean/repair (contact DST) Inspect condenser* Inspect evaporator*...
  • Page 24: Technical Data

    The content of in this document may be subject to change without prior notice. For questions and comments regarding the content in this document, please send it to Number of electric heater steps Seibu Giken DST AB, ATT: Documentation, Avestagatan 33, 163 53 SPÅNGA, 1/2 - 4,5 1/2 - 9 Heating power in steps [kW] SWEDEN.
  • Page 25 Component list RL-61 Description Type, Drwg No etc 61 61L Qty. Art No Notes Rotor unit   Rotor DMR-550H10 (300 cpsi) 108256   Radial seal 0,35x35x1000mm; Teflon 105241   Periferal seal Felt+EPDM 1750x25 103131   Hose clamp...
  • Page 27 Harmful chemicals and solvents for rotors SEIBU GIKEN CO.,LTD. Reduced performance and/or rotor degradation is possible when adsorping the following substances. Chemical Substance Note Cause formula Oil vapor Cloggs the micro pores on the silica gel/zeolite. Ammonia 2ppm and above, prolonged exposure Degrades the silica gel/zeolite.
  • Page 28 CE &UKCA As of 2022, the latest declaration of confomity for fully assembled machinery and declaration of incorporation of partly assembled machinery for CE and UKCA are available for downloads. If unable to scan the QR-code, visit DST website at:...
  • Page 32 Seibu Giken DST AB Avestagatan 33 | 163 53 Spånga, Sweden Phone: +46 8 445 77 20 | Fax: +46 8 445 77 39 info@dst-sg.com | www.dst-sg.com Seibu Giken DST is certified according to ISO 9001...

This manual is also suitable for:

Rl-61l

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