Nortec MES-U Installation & Operating Manual

Electrode steam humidifiers installation, operation, maintenance, spare parts, and exploded views guide

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MES-U Electrode
Steam Humidifiers
Installation, Operation,
Maintenance, Spare Parts, and
Exploded Views Guide
IMPORTANT: Read and save this guide for future
reference. This guide to be left with equipment owner.
Form 03-111 Rev. 1

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Table of Contents
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Summary of Contents for Nortec MES-U

  • Page 1 MES-U Electrode Steam Humidifiers Installation, Operation, Maintenance, Spare Parts, and Exploded Views Guide IMPORTANT: Read and save this guide for future reference. This guide to be left with equipment owner. Form 03-111 Rev. 1...
  • Page 2: Table Of Contents

    INSTALLATION – RECEIVING EQUIPMENT......1 – PRINCIPAL OF OPERATION ......1 –...
  • Page 3: Installation

    Any and all damage, loss, or breakage claims are to be made directly to the shipping company. The NORTEC MES-U electrode humidifier is the culmination of many years of research and development in the electrode humidifier industry. This...
  • Page 4: Water Supply And Plumbing

    7. DO NOT use a hot water source as it will cause deposits that will eventually block the fill valve orifice. WATER CONNECTION Figure #2 Bottom View of MES-U Unit 3/8" Cold Water Olive Connection Use 7/8" I.D. Hose From Factory 1. A copper compression olive type coupling for 1/4"...
  • Page 5: Capacity Adjustment

    Figure #3 Adjustable Pot Adjustable Capacity Pot The MES-U series of humidifiers come with adjustable capacity (AC) PC boards. These boards have a pot labeled 20 to 100%. See Figure # 3. CYLINDER REPLACEMENT After an extended period of operation, in...
  • Page 6: Installing The New Cylinder

    To correct short cycling, all humidifiers have a capacity adjustment which allows the output of the humidifier to be reduced to as low as 20% of rated output, thus extending the ‘on time’ required to maintain output.
  • Page 7: Starting Point

    RESET UNIT (HUMIDIFIER): To reset the humidifier, the auto on/off/drain switch at the front of the humidifier should be switch to the “Off” position for a minimum of five seconds and then switched back to the “On” position.
  • Page 8 Red “Change Cylinder” light on - Water NOT at top of cylinder: Water foaming to top of cylinder causing false full cylinder indication. This also may be accompanied by arcing (flashing) inside cylinder. Refer to “Terms Used” regarding foaming. Water remains at high level and won’t concentrate: This is normal on cold start-up and can be accelerated by adding maximum 1/2 tsp.
  • Page 9: Physical Dimensions Diagram

    MES-U / MES-P DEPTH in.(cm) 6.6 (16.7 cm) 6.6 (16.7 cm) 8.4 (21.3 cm) 8.4 (21.3 cm) 10.5 (26.7 cm) 10.5 (26.7 cm) CONFIGURATION MES-U / MES-P lbs(kg) lbs(kg) 8.2 (3.7) 9.6 (4.3) 8.7 (4.0) 10.1 (4.6) 9.5 (4.3) 15/20 12.6 (5.7) 13.9 (6.3) 13.4 (6.1) 14.8 (6.7) 22.0 (10.0) 21.5 (9.7) 22.9 (10.4) 13.2 (6.0) 21.3 (9.7)
  • Page 10: Wiring Diagram

    CYLINDER LAMP CURRENT TRANSFORMER STEAM CYLINDER NOTE: SOLID LINES WIRING BY OTHERS MES-U INTERNAL AND FIELD WIRING (For PVC or LVC unit with remote or attached electrical) WIRING DIAGRAM number 150-6240 REV. B - 8 - 24 VAC INPUT (By Others)
  • Page 13: Limited Warranty

    LIMITED WARRANTY NORTEC INDUSTRIES INCORPORATED and/or NORTEC AIR CONDITIONING INDUSTRIES LIMITED (hereinafter collectively referred to as THE COMPANY), warrant for a period of two years from date of shipment, that THE COMPANY’s manufactured and assembled products, not otherwise expressly warranted (with the exception of the cylinder) are free from defects in material and workmanship.
  • Page 14 Model # :_________________________ Serial # :_________________________ Cylinder # :_______________________ _________________________ _________________________ _________________________ NORTEC INDUSTRIES INC. P.O. Box 698 826 Proctor Avenue Ogdensburg, NY 13669 Cylinder Last Replaced: MTH/DAY/YR MTH/DAY/YR MTH/DAY/YR NORTEC AIR CONDITIONING Ottawa, ON K1T 3T7 A WMH COMPANY INDUSTRIES LTD*.

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