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ETT DESHU Technical Instructions

Double flow dehumidifier
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É n e r g i e
T r a n s f e r t
T h e r m i q u e
Technical instructions
for Operation & Maintenance
Double flow dehumidifier
DESHU
A different climate
Environmental control solutions
July 2016

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Summary of Contents for ETT DESHU

  • Page 1 É n e r g i e T r a n s f e r t T h e r m i q u e Technical instructions for Operation & Maintenance Double flow dehumidifier DESHU A different climate Environmental control solutions July 2016...

  • Page 2: Table Of Contents

    Diagnostics and troubleshooting support ................Information contained in this document has been prepared by qualified ETT specialists. We are doing our best to ensure its completeness and accuracy but it does not constitute a guarantee. This information is given in good faith, any use of the equipment not in accordance with the instructions...

  • Page 3: Equipment Performance

    > ensures regulatory compliance (compulsory checks based on local regulations). > ETT Services is here to help you get the most out of your installation. +33 (0)2 98 48 02 22 ett.services@ett.fr Contact your local ETT Services adviser.
  • Page 4 Check water quality in hot water coil Check 3-way valve operation Check electric heaters Check hot water coils ETT may change equipment’s data & design without prior notice. MARK-NOT_13.00-EN Specifications given in this document are for information only and are not contractual.

  • Page 5: Regulatory Requirements

    > routine or periodic tests results; > significant non-use periods. > ETT may change equipment’s data & design without prior notice. MARK-NOT_01.00-EN Specifications given in this document are for information only and are not contractual.
  • Page 6 Refrigerant leaks must be handled and declared according to the installation refrigerant charge. > ETT may change equipment’s data & design without prior notice. MARK-NOT_13.00-EN Specifications given in this document are for information only and are not contractual.

  • Page 7: Specific Maintenance Recommendations

    Check exchangers for fouling; > Check air ducts (fire dampers, fouling in ducts, cone connectors). > ETT may change equipment’s data & design without prior notice. MARK-NOT_01.00-EN Specifications given in this document are for information only and are not contractual.
  • Page 8 Spray air on the whole surface, in the direction of the pleats during approximately 45 seconds. > > Turn the filter over and repeat the procedure on the other side. ETT may change equipment’s data & design without prior notice. MARK-NOT_13.00-EN Specifications given in this document are for information only and are not contractual.

  • Page 9: Starting/Stopping The Unit

    Failure to take this precaution could result major damage to the unit or cause components to break (electrical components, compressors). In such circumstances, components are not covered by ETT guarantee. ETT may change equipment’s data & design without prior notice.

  • Page 10: Controller Operation

    - Press and hold to start/stop the unit. - Press and hold together to access the Controller menu (password UP + DOWN protected). ETT may change equipment’s data & design without prior notice. MARK-NOT_13.00-EN Specifications given in this document are for information only and are not contractual.
  • Page 11 Use the UP and DOWN arrow keys to adjust the setpoint. Press the ESC key to return to the main screen. ETT may change equipment’s data & design without prior notice. MARK-NOT_01.00-EN Specifications given in this document are for information only and are not contractual.
  • Page 12 Use the UP and DOWN arrow keys to adjust the setpoint. Press the ESC key to return to the main screen. ETT may change equipment’s data & design without prior notice. MARK-NOT_13.00-EN Specifications given in this document are for information only and are not contractual.

  • Page 13: Diagnostics And Troubleshooting Support

    - Check fan and fan motor Faulty thermostat - Check thermostat Faulty thermostat - Faulty thermostat ETT may change equipment’s data & design without prior notice. MARK-NOT_01.00-EN Specifications given in this document are for information only and are not contractual.
  • Page 14 - Check power supply chain (wire, connections, contactors, etc.) Ventilation fault - Check external box and internal fan ETT may change equipment’s data & design without prior notice. MARK-NOT_13.00-EN Specifications given in this document are for information only and are not contractual.
  • Page 15 - Check charge Pre-expansion - Check drier filter Wrong flow rates - Check flow rates in air streams ETT may change equipment’s data & design without prior notice. MARK-NOT_01.00-EN Specifications given in this document are for information only and are not contractual.
  • Page 16 56 Route de Brest - BP26 - 29830 PLOUDALMEZEAU - France Tel: +33 (0)2 98 48 14 22 - Fax : +33 (0)2 98 48 09 12 Export Contact: +33 (0)2 98 48 00 70 - ETT Services: +33 (0)2 98 48 02 22 www.ett.fr...