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Summary of Contents for Marley Clearsky F400
- Page 1 u s e r m a n u a l F400 Clearsky cooling tower ® O P E R AT I O N - M A I N T E N A N C E Z0414966_C ISSUED 8/2018 READ AND UNDERSTAND THIS MANUAL PRIOR TO OPERATING OR SERVICING THIS PRODUCT.
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Page 2: Table Of Contents
Indicates special instructions on installation, operation or maintenance which Note are important but not related to personal injury hazards. These instructions assist in obtaining efficient, long life from Marley counterflow Note cooling towers. Direct questions concerning cooling tower operation and main- tenance to your Marley sales representative. -
Page 3: Plume Characteristics
plume characteristics Because of the evaporation that takes place in a cooling tower, the leaving airstream is saturated with water vapor. This plume of saturated air can be highly visible because it is usually warmer and contains considerably more moisture than the surrounding atmosphere. - Page 4 Marley ClearSky provide a means by which the plume leaving the tower can be made less visible, or more buoyant, or both resulting in reduced ground fogging. This is done by reducing the actual grains of moisture in the plenum airstream and at the same time producing a stream of heated dry air that is mixed with the tower’s primary saturated...
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Page 5: Before Startup
5– Rotate fan by hand to be sure of free rotation and ample tip clearance. See the Fan User Manual. 6– Check motor insulation with a megohm meter. Refer to the Maintenance Section of the Marley “Fan Motor” User Manual. ➠... -
Page 6: Starting Procedure
operation 7–Lubricate the motor according to motor manufacturer’s instructions. 8– Test run each fan separately for a short time. Check for excessive vibration or unusual noise. If either is present, see Troubleshooting Guide on pages 18 and 19 of this manual. Fan must rotate clockwise when viewed from above. Recheck Geareducer oil level. -
Page 7: Clearsky Plume Abatement System
operation Operation Entering water temperature in excess of 125°F may result in fill deformation. Caution TOWER PERFORMANCE–Keep the cooling tower clean and water distribution uniform to obtain continued maximum cooling capacity. The capacity of a cooling tower to cool water to a given cold water temperature varies with the wet-bulb temperature and the heat load applied to the cooling tower. - Page 8 operation In transitioning from maximum thermal performance to maximum plume abate- Caution ment, the hot and cold water temperatures will rise. Care must be exercised to ensure that the water temperatures do not rise above 125°F or a lower limit defined by the user's process.
- Page 9 Primarily, this includes the air inlet and adjacent structural framing. Your understanding of cold weather operation will be enhanced if you read “Cooling Towers and Freezing Weather” Marley Technical Report H-003. Ice forming characteristics on any given cooling tower will vary, depending on velocity and direction of wind, circulating water rate, and heat load.
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Page 10: Clearsky Operation Logic Diagram
ClearSky Operation Logic Diagram Read cold water temp CW Wait several minutes Are dry Is CW < dampers vent doors Open vent doors open? open? Tower is in maximum thermal performance mode Reduce dry damper opening by an increment Is tower No action required pluming? vent doors... - Page 11 operation ClearSky Operation Logic Diagram Notes 1– Assumes maximum cold water (CW ) temperature has priority over plume abatement. 2–Assumes fans are operating at full speed. 3– Assumes vent doors are either all open or all closed. Further operational flexibility could be gained by only opening or closing some of the vent doors.
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Page 12: Tower Maintenance
FAN MOTOR–Lubricate and maintain each electric motor in accordance with the manufacturer’s instructions. If repair work is necessary, contact the nearest represen- tative of the motor manufacturer. See Warranty Section of the Marley “Fan Motor” User Manual. Fan motors with sealed bearings do not require lubrication maintenance. -
Page 13: Water Quality And Blowdown
maintenance FAN–Inspect fan blade surfaces every six months. For detailed maintenance informa- tion, refer to the Fan User Manual. GEAREDUCER–Make weekly and monthly oil checks. Inspect internal parts during seasonal oil change. Refer to the Geareducer User Manual for detailed maintenance instructions. - Page 14 maintenance If tower is operated at 4 concentrations, circulating water will contain four times as much dissolved solid as the make-up water, providing none of the solids form scale or are otherwise removed from the system. The blowdown quantity is normally and most easily achieved using a bleed value acti- vated by a measurement of the water’s dissolved solids.
- Page 15 maintenance Potential Causes of Fill Clogging: • Suspended materials—Debris, etc. • Scale—Can be sulfates, silicates, carbonates, or oxides. Scaling effects can be ac- centuated by suspended solids. • Algae and/or Biofilm—Consult a qualified water treatment professional. Possible Sources of Scale: •...
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Page 16: Spare Parts
Spare Parts SPX Cooling Technologies manufactures and inventories cooling tower replacement parts. Typical lead time is 10 working days. Contact your Marley representative for emergency service. Owners should consider maintaining an inventory of critical mechanical components, such as a fan assembly, gear drive and driveshaft to avoid emergency shutdown of cooling tower operations. -
Page 17: Tower Inspection And Maintenance
3– If shutdown period is longer than seasonal, contact your Marley sales representative for additional information. ClearSky Plume Abatement System Close dry dampers to prevent foreign objects from entering the dry ducts. Cooling Tower Inspection and Maintenance: Microorganisms including Legionella bacteria can exist in premise plumbing in- Warning cluding cooling towers. -
Page 18: Troubleshooting
Too frequent starting or speed Set on/off or speed change set-points farther apart. Consider installing changes a Marley VFD for fine temperature control. Deterioration of grease or foreign Flush bearings and relubricate. Does not apply to motors with sealed material in grease bearings. -
Page 19: Safety
troubleshooting Trouble Cause Remedy Check transformer and setting of taps. Use higher voltage on Voltage too low at motor transformer terminals or reduce loads. Increase wire size or reduce terminals because of line drop Motor does not come up to inertia. -
Page 20: Inspection Checklist
inspection checklist Date Inspected Inspected By Owner Location Owner's Tower Designation Tower Manufacturer Model No. Serial No. Process Served by Tower Operation: Continuous Intermittent Seasonal Design Conditions °F °F °F Number of Fan Cells Condition: 1—Good 2—Keep an eye on it 3—Needs immediate attention 1 2 3 Comments... - Page 21 inspection checklist Condition: 1—Good 2—Keep an eye on it 3—Needs immediate attention Mechanical Equipment 1 2 3 Comments Gear Drive Units Manufacturer Model Ratio Oil Level: Full Add Immediately Low, check again soon Oil Condition: Good Contains Water Contains Metal Contains Sludge Oil Used —...
- Page 22 inspection checklist Actuators – Dry Dampers Manufacturer Model Ratio Motor Manufacturer Name Plate Data: Phase Cycle Volts F.L. Amps Frame S.F. Special Info. Last Lubrication—Date Grease Used—Type Any Unusual Noise? Action Required Any Unusual Vibration? Action Required Any Unusual Heat Build-up? Action Required Actuators –...
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Page 23: Inspection And Maintenance Schedule
inspection and maintenance schedule General Recommendations — m o r e f r e q u e n t i n s p e c t i o n a n d maintenance may be desirable 1. Inspect for clogging 2. - Page 24 F400 Clearsky cooling tower U S E R M A N UA L SPX COOLING TECHNOLOGIES, INC. 7401 WEST 129 STREET Z0414966_C ISSUED 8/2018 OVERLAND PARK, KS 66213 USA ©2012-2018 SPX COOLING TECHNOLOGIES, INC ALL RIGHTS RESERVED 913 664 7400 | spxcooling@spx.com In the interest of technological progress, all products are subject to design spxcooling.com and/or material change without notice.
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