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GENERAL INFORMATION

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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.
Standard electrical motors are suitable for an ambiant temperature
range from -25°C to +40°C.

CLOSED CIRCUIT COOLING TOWERS (VFL)

Design pressure : max. 16 bar
Fluid inlet temperature : max. 82°C
Fluid outlet temperature : min. 10°C
Fluids circulated through the inside of the coils must be compatible
with the coil construction material, ie.

- black steel, for hot dip galvanized coils
- stainless steel AISI 304L or 316L (options)
- galvanized steel for cleanable coil (option)

Maximum spray pressure : 14 kPa (If pump(s) are installed by
others, it is recommended to install a pressure gauge at the inlet of
the water distribution system.

EVAPORATIVE CONDENSERS (VCL)

Design pressure : 16 bar
Refrigerant inlet temperature : max. 120°C
Refrigerant outlet temperature : min. - 20°C
Suitable refrigerants : R-717, Halocarbon Refrigerants, HFC`s.
Standard condenser coils are manufactured from black steel and
hot dip galvanised after fabrication and may contain certain
contaminants, such as carbon, iron oxyde or welding particles. The
interior condition of the coil, including humid air must be
considered, when using halocarbon (or HFC) refrigerants and
sensitive system components, such as electronic expansion devices
or semi hermetic compressors. The installer must take the
necessary precautions on site to safeguard the operation of these
components in conjunction with the condenser coils. 
Maximum spray pressure : 14 kPa (If pump(s) are installed by
others, it is recommended to install a pressure gauge at the inlet of
the water distribution system.)
At ambient temperatures above 40°C ensure spray water pump
remains running, even if condenser is idle. This prevents unwanted
discharge of refrigerant through safety valves (by others).

Note: Stand-by pump arrangements for evaporative fluid coolers and
condensers require alternating operation of each pump at least twice per
week to avoid stagnant water conditions and bacteriological growth.

Purge Requirements

The installer of BAC condensers must ensure proper system purging
of air prior to operation. Entrained air can obstruct free drainage of
refrigerant and reduce condensing capacity, resulting in higher
operating pressures than design. To verify absence of non
condensables in the system, follow the instructions of the BAC
Evaporative Condenser Manual E115.
Refrigerant connections on site :
All connections in the external refrigerant pipework (installed by
others) must be leak free and tested accordingly.

COOLING TOWERS (VTL)

Maximum inlet pressure : 0.5 bar 
Water inlet temperature : max. 55°C (std. fill) or 65°C  (high
temperature option)
For circulating water quality compatible with construction materials
refer to section ‘WATER CARE’ on page 4.

Note: Actual spray pressure is indicated on technical data sheet supplied with
order acknowledgement.

All piping external to BAC cooling equipment must be supported
separately. In case the equipment is installed on vibration rails or
springs, the piping must contain compensators to eliminate
vibrations carried through the external pipework.

All electrical, mechanical and rotating machinery constitute a
potential hazard, particularly for those not familiar with its design,
construction and operation. Accordingly adequate safeguards
(including use of protective enclosures where necessary) should be
taken with this equipment both to safeguard the public (including
minors) from injury and to prevent damage to the equipment, its
associated system and the premises.
If there is doubt about safe and proper rigging, installation,
operation or maintenance procedures, contact the equipment
manufacturer or his representative for advise.

AUTHORIZED PERSONNEL

The operation, maintenance and repair of this equipment should be
undertaken only by personnel authorized and qualified to do so. All
such personnel should be thoroughly familiar with the equipment,
the associated systems and controls and the procedures set forth in
this and other relevant manuals. Proper care, procedures and tools
must be used in handling, lifting, installing, operating and repairing
this equipment to prevent personal injury and/or property damage.

MECHANICAL SAFETY

Depending upon site conditions it also may be necessary to install
items such as bottom air inlet screens, ladders, safety cages,
stairways, access platforms, handrails and toe boards for the safety
and convenience of the authorized service and maintenance
personnel. At no time this equipment should be operated without all
fan screens, access panels and access doors in place.
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
representative.

ELECTRICAL SAFETY

Each fan and pump motor associated with this equipment should be
installed with a lockable disconnect switch located within the sight
of the equipment. No service work should be performed  on or near
the fans, motors, drives or inside the equipment unless fan and
pump motors, heaters etc. are electrically isolated.

LOCATION

All cooling equipment should be located as far away as possible
from occupied areas, open windows or air intakes to buildings.

LOCAL REGULATIONS

Installation and operation of cooling equipment may be subject of
local regulations, such as establishment of risk analysis. Ensure
regulatory requirements are consistently met.

Operating Conditions

Connecting Pipework

Safety Precautions

Содержание VCL

Страница 1: ...a guide to achieve these goals In addition to establishing the operating plan and the cooling system logbook it is recommended to conduct a cooling system risk analysis preferably by an independent third party For the cooling system scale corrosion and biological control must be established and initiated when the system is first filled with water and administered on a regular basis thereafter in a...

Страница 2: ...2 Water Distribution Section 3 High Efficiency Drift Eliminators 4 Fan 5 Fan shaft and bearing 6 Fan motor 7 Wet Deck Surface 8 Strainer 9 Water Make up Valve 10 Coil VTL Cooling Towers VFL Closed Circuit Cooling Towers VCL Condensers ...

Страница 3: ...G TOWERS VTL Maximum inlet pressure 0 5 bar Water inlet temperature max 55 C std fill or 65 C high temperature option For circulating water quality compatible with construction materials refer to section WATER CARE on page 4 Note Actual spray pressure is indicated on technical data sheet supplied with order acknowledgement All piping external to BAC cooling equipment must be supported separately I...

Страница 4: ...on in order to prevent white rust Passivation is the formation of a protective passive carbonate layer on galvanised steel surfaces On newly installed units to provide maximum protection from corrosion one must take special measures to passivate galvanised steel surfaces To ensure proper passivation of the galvanised steel keep the pH of the circulating water between 7 0 to 8 2 for four to eight w...

Страница 5: ...loat Arm Assembly 5 Float Valve To make the initial setting adjust the wing nuts so that the valve is completely closed when the water level in the cold water sump is 13 mm below the overflow level Under normal load conditions this setting should produce the correct operating level At low load conditions the operating level will raise and need be adjusted BLOW DOWN In case of a continuous blow dow...

Страница 6: ...mps must rotate in the correct direction which is indicated by arrows on the equipment Check proper functioning as follows 1 Stop fan s and pump s 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 S...

Страница 7: ...cedure is as follows 1 Shut off the fan s but leave the pump s running 2 Check and adjust spray pressure if required not applicable for coil models with standard pumps 3 Remove the eliminators 4 Check to see if the nozzles are producing the spray pattern shown in figures below 5 Clean water distribution from dirt and debris Ensure spray branches and nozzles are in place and clean Replace damaged o...

Страница 8: ... new grease appears at the seal In particular when extended lubrication lines are fitted ensure that ALL old grease is removed and that new grease is leaving the seal 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 bea...

Страница 9: ...er DISINFECTION Disinfection of your cooling system may be needed in case of high concentration of aerobic bacteria and or Legionella Disinfection is also recommended for evaporative cooling systems with known or suspected high bacteriological levels prior to a cleaning procedure Some local or national guidance also recommends disinfection prior to initial start up after a prolonged shut down afte...

Страница 10: ... the full factory warranty Factory authorized replacement parts are available normally within four days after receipt of an order In emergency cases shipment can be usually made within 24 hours To order factory authorized parts contact your local BAC representative Be sure you include the unit serial number when ordering any parts To facilitate servicing of the equipment it is suggested that the f...

Страница 11: ...quired to ensure a safe and efficient operation of your evaporative cooling products From a full range of risk assessment to selective water treatment training testing record keeping and annual system overview Contact your local BAC representative for further information and specific assistance INTERESTING WEB SITES www BaltimoreAircoil com Balticare More Information ...

Страница 12: ... Every Six Months Annually Shutdown Checks and Adjust ments Cold Water Basin and Strainers X X Operating level and make up X X Blow down X X Sump heater package X X Belt tension X X Drive alignment X X Locking Collar X X Rotation of fan s and pump s X Motor voltage and current X X Unusual noise and or vibration X X Inspections and Monitoring General condition X X Heat transfer section X X Finned d...

Страница 13: ...NOTES 13 ...

Страница 14: ...14 NOTES ...

Страница 15: ...NOTES 15 ...

Страница 16: ...ANCE AND MONITORING PROGRAMME www BaltimoreAircoil com info BaltimoreAircoil co za Baltimore Aircoil Comapy SA Pty Ltd Portland Road Phillipi Cape Town South Africa Baltimore Aircoil Company SA Pty Ltd Model Serial number ...

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