BAC PTE Operating And Maintenance Instructions Manual
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BAC PTE Operating And Maintenance Instructions Manual

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MPTEv11EN
PTE Open Cooling Towers
OPERATING AND MAINTENANCE INSTRUCTIONS

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Summary of Contents for BAC PTE

  • Page 1 MPTEv11EN PTE Open Cooling Towers OPERATING AND MAINTENANCE INSTRUCTIONS...
  • Page 2 Water sampling, test results and corrective actions should be recorded in the cooling system logbook. For more specific recommendations on keeping your cooling system efficient and safe, contact your local BAC Balticare service provider or representative. Name, e-mail and phone number can be found on the website www.BACService.eu.
  • Page 3 Inspections and monitoring Start- Weekly Monthly Quarterly Every 6 Annually Shutdown months Electric water level control package (option) TAB test (dip slides) Circulating water quality System overview Record keeping as per event Lubrication Start-Up Weekly Monthly Quarterly Every 6 Annually Shutdown months Fan shaft bearings...

  • Page 4: Table Of Contents

    Table of contents OPERATING AND MAINTENANCE INSTRUCTIONS Construction Details Typical section General Information Operating Conditions Connecting pipework Fan cycling for multi-fan models Safety precautions Disposal requirements Non-walking surfaces Modifications by others Warranty Water Care About water care Biological control Chemical treatment Passivation Cold Weather Operations About cold weather operation...

  • Page 5: Construction Details

    CONSTRUCTION DETAILS Typical section 1. Fan guard 9. Water outlet connection 2. Axial fan 10. Drain 3. Drive system 11. Overflow 4. Eliminators 12. Strainer and anti-vortex hood 5. Water distribution system 13. Make up assembly 6. Fill 14. Fan motor 7.

  • Page 6: General Information

    GENERAL INFORMATION Operating Conditions BAC cooling equipment is designed for the operating conditions specified below, which must not be exceeded during operation. • Wind Load: For safe operation of unshielded equipment exposed to wind speeds above 120 km/h installed at a height above 30 m from the ground, contact your local BAC-Balticare representative.
  • Page 7 When the equipment is operated with a variable fan speed control device, steps must be taken to avoid operating at or near to the fan's «critical speed». For more information consult your local BAC Balticare representative. ELECTRICAL SAFETY All electrical components associated with this equipment should be installed with a lockable disconnect switch located within sight of the equipment.

  • Page 8: Disposal Requirements

    BAC will guarantee all products to be free from manufactured defects in materials and workmanship for a period of 24 months from the date of shipment. In the event of any such defect, BAC will repair or provide a replacement.

  • Page 9: Water Care

    WATER CARE About water care In all cooling equipment, operating in evaporative mode, the cooling is accomplished by evaporating a small portion of the re-circulating water as it flows through the equipment. When this water evaporates, the impurities originally present in the water remain. Unless a small amount of water is drained from the system, known as blow down, the concentration of dissolved solids will increase rapidly and lead to scale formation or corrosion or both.
  • Page 10 ® Baltibond Hybrid Coating and SST304L 6.5 to 9.2 Total hardness (as CaCO 50 to 750 mg/l Total alkalinity (as CaCO 600 mg/l max. Total dissolved solids 2050 mg/l max. Conductivity 3300 µS/cm Chlorides 300 mg/l max. Sulfates* 350 mg/l max.* Total suspended solids 25 mg/l max.

  • Page 11: Biological Control

    SST316L 6.5 to 9.5 Total hardness (as CaCO 50 to 750 mg/l Total alkalinity (as CaCO 600 mg/l max. Total dissolved solids 2500 mg/l max. Conductivity 4000 µS/cm Chlorides 750 mg/l max. Sulfates* 750 mg/l max.* Total suspended solids 25 mg/l max. Chlorination (as free chlorine/halogen): continuous 2 mg/l max.

  • Page 12: Chemical Treatment

    5. If it is proposed to operate a treatment programme outside the BAC Water Quality Control Guidelines, the BAC factory warranty may be invalidated if the water quality is persistently outside the Control Guidelines, unless specific prior written BAC approval.

  • Page 13: Cold Weather Operations

    COLD WEATHER OPERATIONS About cold weather operation BAC cooling equipment can be operated in sub freezing ambient conditions provided the proper measures are taken. Listed below are general guidelines which should be followed to minimize the possibility of coil freeze-up.

  • Page 14: Frp Propeller

    «critical speed» and below a minimum of 15 Hz for a belt driven unit (or direct driven fans) or 20 Hz for a unit with gear box. For more information consult your local BAC Balticare representative.

  • Page 15: Maintenance Procedures

    MAINTENANCE PROCEDURES Checks and adjustments COLD WATER BASIN AND BASIN STRAINERS The cold water basin should be inspected regularly. Any debris which may have accumulated in the basin or on the strainers should be removed. Quarterly, or more often if necessary, the entire cold water basin should be drained, cleaned and flushed with fresh water to remove the silt and sediment which normally collects in the basin during operation.
  • Page 16 Cold water basin and basin strainer OPERATING LEVEL AND MAKE-UP Before initial start up the straps, that prevent the float ball from moving during transport, as well as the protective bag around this ball, need to be removed. Fixation and wrapping of float ball As the water circulating through the unit is cooled, it collects in the cold water basin and passes through the strainers into the system.
  • Page 17 Operating water level 1. Operating height 2. Overflow Operating heights for evaporative cooling equipment are indicated in the table below: Operating height (measured from pan bottom) Model (mm) Cold water basin operating heights If a float operated water make-up is used, initial setting and regular adjustments are needed. The float controlling the make-up valve is mounted on a threaded rod, held in place by wing nuts.
  • Page 18 To check the operating level, proceed as follows: 1. Remove combined inlet shields. 2. Measure height from sump bottom to water level and compare with face value from table. 3. Check valve for leakage and replace valve, if necessary. 4. Check that float arm can move freely and that float ball floats and closes valve. 5.
  • Page 19 CAUTION No service work should be performed on the drive system without first ensuring the fan and pump motors have been isolated, tagged and locked in the off position. Drive system with external motor 1. Fan motor 2. Motor sheave 3.
  • Page 20 Fan belt check and adjustment 1. Fan sheave 2. Belt 3. Motor sheave 4. 10 mm/m deflection = proper belt tension 5. Straight edge CAUTION Over-tensioning of belts can lead to component damage. Deflection force (kg) Diameter (mm) Belt profile motor sheave Min.
  • Page 21 Drive Alignment Proper drive alignment ensures maximum belt life. Alignment is checked for standard drives after correct belt tensioning by placing a straight-edge across both sheaves as shown in the figure below. Sheave alignment standard drives 1. Motor sheave 2. Fan sheave 3.

  • Page 22: Inspections And Corrective Actions

    (e.g. unwanted ice formation). If this occurs, a thorough inspection of the entire unit followed by immediate corrective action is needed. If required, consult your local BAC Balticare representative for assistance. Units operated with Variable Frequency Drive (VFD) might operate close to the proper frequency of the unit, resulting in resonance.
  • Page 23 Remove any obstructions from heat transfer section(s). Any damages or corroded areas need to be repaired. Call your local BAC Balticare representative for assistance. Minor fouling can usually be removed chemically or by temporary changes to the water treatment programme.
  • Page 24 8. Reinstall eliminators and ensure they fit tightly with no gaps. 9. Close the sliding access doors. 10. Start fan(s) and pump(s). Nozzle spray distribution type cooling tower WATER DISTRIBUTION BRANCHLOK™ SYSTEM The exclusive BranchLok™ system allows you to inspect and clean out the water distribution branches as well as the nozzles without the use of any tools.
  • Page 25 Remove combined inlet shields 2. The supporting steel strip does not need to be reinstalled because it is only required for safe transport purposes. 3. Make sure the profile of the combined inlet shields keeps the water inside the unit. The correct position is with the horizontal part towards the outside of the unit and the sloping part facing downwards to the inside of the unit.
  • Page 26 Location of fan shaft bearings and lube fittings 1. Lubrication fitting 2. Bearing 3. Extended lubrication line 4. Fan shaft AXIAL FAN Due to its size and speed, the axial fan has great potential for injury and destruction if damaged. Inspect closely, and as required, replace damaged or deteriorating fan blades.
  • Page 27 Axial low noise fan FAN MOTOR The standard fan motor for this line of units is a TEFC (Totally Enclosed Fan Cooled) motor. The motor with frame size smaller or equal than 200L has permanently lubricated ball bearings and special moisture protection on the bearings, shaft and windings.

  • Page 28: Lubrication

    Lubrication FAN SHAFT BEARINGS The fan shaft is supported by two pillow block ball bearings (see figure below), each equipped with a lubrication fitting and a flinger/locking collar to keep out moisture. Under normal operating conditions the bearings should be greased every 1000 operating hours or at least every three months.

  • Page 29: Cleaning Procedures

    6 hours. Higher chlorine levels for a shorter period are possible, but require a higher level of corrosion protection than galvanized steel only. Consult your BAC Balticare representative for further information.
  • Page 30 A proper regularly monitored biocide programme reduces the need for cleaning and disinfection actions significantly. W W W . B A L T I M O R E A I R C O I L . E U...

  • Page 31: Comprehensive Maintenance

    To order factory authorized parts, contact your local BAC Balticare representative. Make sure you include the unit serial number when ordering any parts.

  • Page 32: Further Assistance & Information

    FURTHER ASSISTANCE & INFORMATION Assistance BAC has established a specialized total care company called Balticare. The BAC Balticare offering involves all elements required to ensure a safe and efficient operation of your evaporative cooling products. For more details, contact your local BAC representative for further information and specific assistance at www.BaltimoreAircoil.eu...
  • Page 33 W W W . B A L T I M O R E A I R C O I L . E U...
  • Page 34 W W W . B A L T I M O R E A I R C O I L . E U...
  • Page 35 W W W . B A L T I M O R E A I R C O I L . E U...
  • Page 36 COOLING TOWERS CLOSED CIRCUIT COOLING TOWERS ICE THERMAL STORAGE EVAPORATIVE CONDENSERS HYBRID PRODUCTS PARTS, EQUIPMENTS & SERVICES www.BaltimoreAircoil.eu info@BaltimoreAircoil.eu Please refer to our website for local contact details. Industriepark - Zone A, B-2220 Heist-op-den-Berg, Belgium © Baltimore Aircoil International nv...

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