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Summary of Contents for Marley class FM400
- Page 1 class FM400 User Manual Manual 04-118...
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Page 2: Table Of Contents
Indicates special instructions on installation, operation or maintenance ▲ ▲ ▲ Note which are important but not related to personal injury hazards. These instructions assist in obtaining efficient, long life from Marley ▲ ▲ ▲ Note counterflow cooling towers. Direct questions concerning cooling tower operation and maintenance to your Marley sales office or representative. -
Page 3: Before Startup
The following is a list of components to be checked before starting the tower: 1–Check drive shaft alignment. Realign if necessary. See Marley Drive Shaft Service Manual. 2– Check tightness of bolts in fan cylinder joints. -
Page 4: Starting Procedure
Geareducer oil to come up to operating temperature, check motor load with watt meter, or take operating volt and ampere readings and calculate motor HP. Refer to Marley Fan Service Manual for instructions. Pitch fans to pull correct contract horsepower when circulating design water rate at design hot water temperature. - Page 5 If a greatly reduced water flow rate is desired, it may be advisable to change nozzle sizes to obtain the desired pressure and maintain proper water distribution. A Marley engineer can advise minimum and maximum flow rates for even distribution.
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Page 6: Tower Maintenance
Well-maintained equipment gives the best operating results and the least maintenance cost. Marley recommends setting up a regular inspection schedule to insure effective, safe operation of the cooling tower. Use the schedule on page 14 to obtain continuously good performance with the least tower maintenance. - Page 7 Marley Electric Motors Service Manual. FAN–Inspect fan blade surfaces every six months. For detailed maintenance information, refer to Marley Fan Service Manual. GEAREDUCER–Make weekly and monthly oil checks. Inspect internal parts during seasonal oil change. Refer to the Geareducer Service Manual for detailed maintenance instructions.
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Page 8: Water Treatment
Water Treatment BLOWDOWN–Blowdown, or bleed-off, is the continuous removal of a portion of the water from the circulating system. Blowdown is used to prevent the dissolved solids from concentrating to the point where they will form scale. The amount of blowdown required depends upon the cooling range (the difference between the hot and cold water temperatures) and the composition of the make-up water (water added to the system to compensate for losses by blowdown, evaporation and drift). - Page 9 contain copper are not recommended. Chlorine and chlorine containing compounds are effective algaecides and slimicides. If used, chlorine should be added as intermittent (or shock) treatment only as frequently as needed to control the slime and algae. Chlorine and chlorine containing compounds should be added carefully since very high levels of chlorine may occur at or near the point of entry into the circulating water system.
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Page 10: Spare Parts
Spare Parts Marley manufactures and maintains a stock of replacement parts for all cooling tower mechanical equipment. Shipment of these parts are normally made within ten days after an order is received. If emergency service is necessary, contact the local Marley sales office or representative for assistance. -
Page 11: Tower Cleaning
2. Refer to Marley Cooling Tower Motor Operation and Maintenance instructions. 3. If shutdown period is longer than seasonal, contact your Marley sales office or representative for additional information. Cooling Tower Cleaning Any evaporative-type cooling tower must be thoroughly cleaned on a ▲... - Page 12 Troubleshooting Trouble Cause Remedy Motor Will Not Start Power not available at motor terminals 1. Check power at starter. Correct any bad connections between the control apparatus and the motor. 2. Check starter contacts and control circuit. Reset overloads, close contacts, reset tripped switches or replace failed control switches.
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Page 13: Safety
Troubleshooting Trouble Cause Remedy Wrong Rotation (Motor) Wrong sequence of phases Change any two of the three motor leads. Geareducer Noise Geareducer bearings If new, see if noise disappears after one week of operation. Drain, flush and refill Geareducer. See Geareducer Service Manual. -
Page 14: Inspection And Maintenance Schedule
Inspection and Maintenance Schedule General Recommendations —more frequent inspection and maintenance may be desirable 1. Inspect for clogging 2. Check for unusual noise or vibration 3. Inspect keys, keyways and set screws 4. Make sure vents are open 5. Lubricate (grease) 6. - Page 15 Inspection and Maintenance Notes...
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Page 16: 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 °F CW °F WB °F Design Conditions Number of Fan Cells Condition: 1—Good 2—Keep an eye on it 3—Needs immediate attention Comments Structure Casing Material... - Page 17 Inspection Checklist Condition: 1—Good 2—Keep an eye on it 3—Needs immediate attention Mechanical Equipment 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...
- Page 18 7401 W 129 Street • Overland Park, KS 66213 • 800 462 75439 www.marleyct.com • email: info@marleyct.spx.com In the interest of technological progress, all products are subject to design and/or material change without notice. ©2004 Marley Cooling Technologies, Inc Printed in USA...
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