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.
Table of Contents INSTALLATION 1 – RECEIVING EQUIPMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 – PRINCIPAL OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 – WATER SUPPLY AND PLUMBING . . . . . . . . . . . . . . . . . . . . . . . . . . 2 – WATER CONNECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 – START-UP AND OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 – CAPACITY ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . .
Figure #1 Operation Schematic INSTALLATION RECEIVING EQUIPMENT 1. Check packing slip to ensure ALL material has been received. CONDENSATE RETURN (OPTIONAL) 2. Inspect box for damage and note on shipping waybill accordingly. FILL CUP 1 3. After unpacking, inspect unit for damage and if damage is found, advise shipper as soon as possible. 2 3 1” AIR GAP STEAM HOSE ELECTRODES 1. INLET CHAMBER 2. FILL CHAMBER 4. Inspect unit (humidifier) to ensure it is the correct model, phase, and voltage.
for water pressure from 30 to 85 psi and are protected by the built-in strainer. WATER SUPPLY AND PLUMBING 1. The orifice in the fill valve is sized for an extended water pressure range of 30 to 85 psi. 4. For inlet water pressure outside this range, the factory should be contacted. (See Water Supply and Plumbing section of this manual.) 2. For water pressure between 15 and 30 psi, notify the factory and the next larger size fill valve will be supplied. START-UP AND OPERATION 3.
out and the fill solenoid will again open until the cylinder is again full. cylinder is completely used as indicated by the red high water sensor light illuminated on the cabinet. When this condition is reached, a new replacement cylinder is to be installed. This cycling of the red light and fill valve will continue until the unit’s full output capacity is reached after which the water level will automatically lower itself in the cylinder.
2. The old cylinder must be drained completely before removing. This is done by pushing the auto on/off/drain switch to the “drain” position. 3. The white sensor plug on all units is for the sensor pin, which always goes on the single pin offset from the others. See Figure # 5. 3. When completely drained, push the auto on/off/drain switch to the “off” position. 4. Ensure that cylinder plugs are very snug on the pins. 4. Open the main disconnect during the entire cylinder change operation. 5.
Recheck that the “auto on/off/drain” switch is still at “on”. If it is, then shut off the main disconnect and check fuses or breaker of the main disconnect. If they are serviceable, turn power back on. is normally caused by short cycling, a restricted drain, or back pressure. The foam, generated in these instances, is conductive and may lead to false full cylinder indication if the level of the foam approaches the top of the cylinder.
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. of dissolved salt to the cylinder (through the plastic fill cup) on fill cycle. See “Low Water Conductivity” section of this manual.
DIMENSIONS MES-U / MES-P DEPTH WIDTH in.(cm) WIDTH in.(cm) in.(cm) (REMOTE ELECTRICAL) (ATTACHED ELECTRICAL) 6.6 (16.7 cm) 8.6 (21.9 cm) 10.7 (27.1 cm) 6.6 (16.7 cm) 8.6 (21.9 cm) 10.7 (27.1 cm) 8.4 (21.3 cm) 10.5 (26.7 cm) 12.6 (32.2 cm) 8.4 (21.3 cm) 10.5 (26.7 cm) 12.6 (32.2 cm) 10.5 (26.7 cm) 10.5 (26.7 cm) 12.6 (32.2 cm) 10.5 (26.7 cm) 10.5 (26.7 cm) 12.6 (32.2 cm) 5* 10 15 20 25 30 HEIGHT in.(cm) 13.5 (34.4 cm) 17.3 (43.9 cm) 19.4 (49.3 cm) 19.4 (49.3 cm) 21.3 (54.0 cm) 21.3 (54.
PRIMARY POWER PRIMARY CONTACTOR 24 vac (By Others) PRIMARY TERMINAL BLOCK (provided with PVC unit) 24 VAC INPUT (By Others) ON/OFF CONTROLS .
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.
Model # :_________________________ Serial # :_________________________ Cylinder # :_______________________ Cylinder Last Replaced: _________________________ MTH/DAY/YR _________________________ MTH/DAY/YR NORTEC INDUSTRIES INC. P.O. Box 698 826 Proctor Avenue Ogdensburg, NY 13669 NORTEC AIR CONDITIONING INDUSTRIES LTD*.
