Related Manuals for Baltimore Aircoil Company VT0 Series
Summary of Contents for Baltimore Aircoil Company VT0 Series
- Page 1 MVTv07EN VT0 Open Cooling Towers VT1 Open Cooling Tower OPERATING AND MAINTENANCE INSTRUCTIONS...
- Page 2 Recommended maintenance and monitoring programme Baltimore Aircoil Company equipment needs to be properly installed, operated and maintained. Documentation of the equipment used, including a drawing, technical data sheet and this manual should be kept on record. To achieve long, trouble-free and safe operation, it is necessary to establish an operating plan including a programme of regular inspection, monitoring and maintenance.
- Page 3 Lubrication Start-Up Weekly Monthly Quarterly Every 6 Annually Shutdown months Fan shaft bearings Motor bearings* Adjustable motor base * only for motors with grease fittings with typical frame size > 200L (>30 KW) Cleaning procedures Start-Up Weekly Monthly Quarterly Every 6 Annually Shutdown months...
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Page 4: 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 Passivation Overflow connection Cold Weather Operations About cold weather operation Protection against sump water freezing Capacity control... -
Page 5: Construction Details
CONSTRUCTION DETAILS 1. Spray header 11. Air inlet vanes (not shown) 2. High efficiency drift eliminators 12. Fan shaft & bearings 3. Water inlet connection 13. Motor base adjusting screw 4. Casing 14. Fan motor & Drive 5. Wet deck surface 15. -
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 CAUTION Do not cover units with PVC eliminators or fill with a plastic tarpaulin. Temperature increase due to sun radiation could deform the fill or eliminators. AUTHORIZED PERSONNEL The operation, maintenance and repair of this equipment should be undertaken only by personnel authorized and qualified to do so.
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Page 8: Disposal Requirements
Disposal requirements Dismantling of the unit and treatment of refrigerants (if applicable), oil and other parts must be done with respect to the environment whilst protecting workers from potential risks related to exposure to harmful substances. National and regional legislation for material disposal and protection of workers should be taken into account with regard to: •... -
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.
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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
Certain products used for water treatment, particular some dispersant and bio-dispersant additives, might change the properties of the water (such as the surface tension), which can cause excessive drift loss (water passing through the eliminators). In such case we recommend to review the water treatment (product type, dosage) with your water treatment expert. -
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. As these guidelines may not include all aspects of the anticipated operation scheme, system designer and operator must thoroughly review the system, location of the equipment, controls and accessories to ensure reliable operation at all times. - Page 14 It is recommended to provide sinus filters on the VFD to prevent bearing damage on fan motors. CAUTION Refer to fan motor nameplate data when programming a VFD. The purpose of a low level cut out switch for pump protection is to protect the pump from running dry in case of make-up failure or extreme water loss.
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Page 15: Maintenance Procedure
MAINTENANCE PROCEDURE 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 Fixation and wrapping of float ball Operating height is the water level above sump bottom during operation. Operating water level 1. Operating height 2. Overflow Operating heights for the evaporative cooling equipment are indicated in the tables below: Model Operating height (measured from pan bottom) (mm) VT0-0312-xxx VT0-0412-xxx...
- Page 17 3. Measure height from sump bottom to water level and compare with face value from table. 4. Check valve for leakage and replace valve, if necessary. 5. Check that float arm can move freely and that float ball floats and closes valve. 6.
- Page 18 SUMP HEATER PACKAGE Sump heaters must only operate in the winter to prevent the sump water from freezing, when the water pump(s) and the fan(s) are shut off. Under no circumstances should sump heaters operate at other times as they could potentially heat the water to temperature levels, which are favourable to bacteriological growth.
- Page 19 CAUTION Over-tensioning of belts can lead to component damage. Deflection force (kg) Diameter (mm) Belt profile motor sheave Min. Max. 80 through 125 135 through 200 >200 100 through 125 132 through 212 >212 Belt tension forces New belts have to be re-tensioned after 24 hours operation. If belt tensioning is required, please proceed as follows: 1.
- Page 20 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. When the drives are properly aligned the gap measured between straight-edge and sheave does not exceed 0,5 mm per 100 mm of fan sheave diameter.
- Page 21 2. Turn the fan by hand to ensure rotation without obstruction. Remove obstruction, if present. 3. Start the pump(s) and check for the proper rotation as indicated by the arrow on the pump cover. If rotation is wrong, stop pump and correct electrical wiring. 4.
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Page 22: Inspections And Corrective Actions
Inspections and corrective actions GENERAL CONDITION OF THE EQUIPMENT The inspection should focus on following areas: • damage of corrosion protection • signs of scale formation or corrosion • accumulation of dirt and debris • presence of biofilms Smaller damages of the corrosion protection MUST be repaired as soon as possible to prevent the damage from ®... - Page 23 CAUTION Do not step on eliminators. WATER DISTRIBUTION The inspection procedure is as follows: 1. Shut off the fan(s), but leave the pump(s) running. 2. Check and adjust spray pressure, if required. 3. Remove the eliminators. 4. Check to see if the nozzles are producing the spray pattern shown in figure(s) below 5.
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Page 24: Lubrication
ELECTRIC WATER LEVEL CONTROL PACKAGE (OPTIONAL) The electric water level control package (optional) maintains a constant water level in the cold water sump independent of cooling load changes and water supply pressure variations. Ensure every six months that all components (valve, float switches) are operational and clean. During commissioning the tower should be filled manually till overflow level (push float ball under) to prevent air suction of the pump during first start-up. -
Page 25: Cleaning Procedures
The bearings should be lubricated only with a hand grease gun. Do not use high pressure grease guns, since they may rupture the bearing seals. When lubricating, purge the old grease from the bearing by gradually adding grease until a bead of new grease appears at the seal. GREASE PRODUCTS Shell Alvania grease RL3... - Page 26 10. Remove debris from access doors and panels with soft brush and (soap) water and install. 11. Close drain and open make-up supply. Fill system up to overflow level with clean water. DISINFECTION Disinfection of your cooling system may be needed in case of high concentration of aerobic bacteria and/or Legionella.
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Page 27: Comprehensive Maintenance
COMPREHENSIVE MAINTENANCE About comprehensive maintenance In order to ensure maximum efficiency and minimum downtime of your evaporative cooling system, it is recommended to establish and execute a programme of preventive maintenance. Your local BAC Balticare representative will assist you in establishing and implementing such programme. The preventive maintenance programme must not only avoid that excessive downtime occurs under unforeseen and unwanted conditions, it also ensures that factory authorized replacement parts are used, which are designed to fit and for their purpose carry the full factory warranty. -
Page 28: 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 More information REFERENCE LITERATURE... - 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 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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