BAC Trillium Series Operating And Maintenance Instructions Manual
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BAC Trillium Series Operating And Maintenance Instructions Manual

Adiabatic cooler
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MTVFCv05EN
TVFC Adiabatic Cooler
OPERATING AND MAINTENANCE INSTRUCTIONS

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Summary of Contents for BAC Trillium Series

  • Page 1 MTVFCv05EN TVFC Adiabatic Cooler OPERATING AND MAINTENANCE INSTRUCTIONS...
  • Page 2 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: Table Of Contents

    Table of contents OPERATING AND MAINTENANCE INSTRUCTIONS Construction details General information Operating conditions Connecting pipework Safety precautions Disposal requirements Non-walking surfaces Modifications by others Warranty Water care About water care Biological control Chemical treatment Cold weather operations About cold weather operation Protection against coil freezing Protection against pre-cooler freezing Protection of electrical components...

  • Page 4: Construction Details

    TVFC CONSTRUCTION DETAILS Details 1. Heat exchanger 2. Coil headers 3. Casing 4. Fans 5. Pre-cooler media 6. Pre-cooler drain valve 7. Pre-cooler drain 8. Pre-cooler flow valve/meter 9. Pre-cooler water distribution gutter 10. Pre-cooler water distribution pads 11. Ambient temperature sensor 12.

  • Page 5: General Information

    TVFC 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 6: Safety Precautions

    Since the equipment operates at variable speeds, steps must be taken to avoid operating at or near the installation'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 7: 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 8: Water Care

    TVFC WATER CARE About water care The adiabatic pre-cooler of the unit has been designed as direct-water system, without water re-circulation, without pump. Therefore it is essential that the main cold-water supply connected to the adiabatic pre-cooler has adequate pressure and flow rate for the pre-cooler being installed. The primary water treatment control method for the adiabatic pre-cooler is to provide sufficient water to the pre- cooler medium to keep it flushed.
  • Page 9 • the water flow needs to be increased to higher levels to avoid rapid fouling and scaling of the pre-cooler medium. Contact your local BAC-Balticare representative for support. Data for rapid calculations of Practical Scaling Index for adiabatic pre-cooler Conductivity...

  • Page 10: Biological Control

    6.0, water is scale forming With Practical Scaling Index below 5.5, minimum recommended water flow in table "Minimum water flow rates" needs to be increased, contact your local BAC-Balticare representative for support. Biological control The adiabatic pre-cooler and its controls have been designed to minimize the risk of uncontrolled growth of algae, slimes and other micro-organisms such as Legionella: 1.

  • Page 11: 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 12: Protection Of Electrical Components

    Protection of electrical components The components inside the electrical panel are designed to operate in ambient temperatures down to -10°C. In case colder temperatures can be expected, the control panel needs to be equipped with a heating element in order to avoid the temperature inside the panel to drop below -10°C.

  • Page 13: Operating Instructions

    TVFC OPERATING INSTRUCTIONS TrilliumSeries Coolers with EC fans & factory installed control panel Control logic The fan speed is controlled on the basis of the actual process fluid return temperature and the design return temperature, ensuring a minimum electrical consumption and noise levels. The adiabatic pre-cooling will be activated and stopped on the basis of a pre-programmed logical combination of the fan speed and the ambient temperature (release set-point).

  • Page 14: Operating Instructions Digital Controller

    POWER PANEL At the outside of the power panel, the following components can be found: • ON/OFF switch Operating instructions Digital Controller There are different menu's: • Main Loop Menu (readout unit status, temperatures, fan speed, etc...) • Alarms (status of different alarms) •...

  • Page 15: Maintenance Procedure

    TVFC MAINTENANCE PROCEDURE Checks and adjustments ADIABATIC PRE-COOLER WATER FLOW A minimum water flow must be distributed over the adiabatic pre-cooler as per minimum water flow rates. (See table below "Minimum recommended adiabatic pre-cooler water flow rates"). The water flow will depend on the supply water pressure, and can be set with the 2 concentric hex screws on the water flow valve on the flow meter.
  • Page 16 LEVEL SWITCHES Level switches are only available for recirculation units. Two industrial grade stainless steel float switches maintain the water level in the sump between a minimum and maximum level in order to make sure there is always enough water available to ensure a proper wetting of the pre- cooler pads.

  • Page 17: Inspections And Corrective Actions

    Unusual noise and/or vibration are the result of malfunctioning of mechanical components or operational problems (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. Inspections and corrective actions GENERAL CONDITION OF THE EQUIPMENT Once a year the general condition of the equipment should be inspected.
  • Page 18 ADIABATIC PRE-COOLING MEDIA About Adiabatic Pre-Cooling Airborne debris is caught in the adiabatic pre-cooling media. They act as an air filter and as such protect the heat exchanger coil from rapid and excessive fouling. During adiabatic operation the media is 'rinsed' by water overfeed.

  • Page 19: Fan Replacement

    Selecting a coil cleaner is important since the cleaner must neutralise and remove deposits on the surface of the coil. BAC does not recommend the use of alkaline and acidic coil cleaners. These coil cleaners can cause foaming action (oxides or hydroxides of aluminium) resulting in the stripping away of minute layers of the base alloy and the attached soil.
  • Page 20 A. Control Panel B. 4 Fan Unit C. 6 Fan Unit D. 8 Fan Unit E. 10 Fan Unit F. 12 Fan Unit G. 14 Fan Unit Diagram showing sequence of fan motor address Schematic of internal motor terminal strip Conn.

  • Page 21: Cleaning Procedures

    Cleaning procedures CAUTION Stainless steel parts can be sharp. Avoid risk for cutting injury by wearing the proper protective equipment ! WATER DISTRIBUTION OF ONCE-THROUGH PRE-COOLERS The recommended procedure for cleaning of the water distribution header is: 1. Open the hinged pre-cooling media cover (the 1st time, remove the tappers that secure the cover during transport first) The cover can be secured in the open position by means of a hook that is positioned in the middle.
  • Page 22 1. Water deflection plates 2. Water holes 3. Activate the pre-cooler water from the digital controller's maintenance menu to verify if any holes are clogged and need cleaning. If water is spraying out of the tube (+/- 10 cm high) at regular intervals, all holes are free. This applies to both drain holes at the extremities of the distribution pipe as well.
  • Page 23 WATER DISTRIBUTION OF PRE-COOLERS EQUIPPED WITH RECIRCULATION PUMP The strainer at the pump is sized to keep debris out of the water distribution gutter. However, some dirt could accumulate overtime. As a result the water distribution gutter at the top should be cleaned twice a year as a preventive measure.

  • Page 24: Adiabatic Pre-Cooling Media

    If severe disposition causes reduced humidification efficiency and reduced airflow, it is recommended that the pre-cooling media is replaced. New adiabatic pre-cooling media are available from your local BAC-Balticare representative. Media removal/replacement procedure: 1. Verify that the pre-cooling media are DRY! Removing a wet pad will create debris falling into the unit.
  • Page 25 3. Remove pre-cooling media. Start in the middle first and work your way to the sides. Re-install in reverse. Make sure the pre-cooling media is properly pressed down on the supports in the water collection gutter beneath. CAUTION The pre-cooling media have a front side and a back side and need to be (re)installed in the correct position to ensure full wetting over the depth of the media and to ensure maximum efficiency.

  • Page 26: 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 27: 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 28 W W W . B A L T I M O R E A I R C O I L . E U...
  • Page 29 W W W . B A L T I M O R E A I R C O I L . E U...
  • Page 30 W W W . B A L T I M O R E A I R C O I L . E U...
  • Page 31 W W W . B A L T I M O R E A I R C O I L . E U...
  • Page 32 W W W . B A L T I M O R E A I R C O I L . E U...
  • 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 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...

This manual is also suitable for:

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