Airedale OptiChill FreeCool 500kW - 1365kW - Manual (Page 42)

OptiChill Freecool
Active Cabinet Exhaust
Chillers
42
Chillers
Technical Manual : 7197700 v1.2.0. 02_2013
General Description
Optional Extras
Pump - AC Motor - Fixed
Speed A factory fitted in line single or run/standby pump package is available in a standard or
larger external head, please specify at order.
Flow can be proved via the microprocessor display.
Factory fitted and supplied as standard complete with:

flow switch (option)

isolating valves

inlet strainer

electrical switchgear
Pump - Inverter Driven -
Variable Speed for
Constant Water Flow ES A factory fitted in line single or run/standby pump is available in a standard or
larger external head, please specify at order.
Flow is varied via an electronic flow meter, depending on system requirements.
Adjustment and monitoring is via the microprocessor display.
Factory fitted and supplied complete with:

electronic flow monitoring system

flow switch (option)

isolating valves

inlet strainer

electrical switchgear
Corrosion Resistant
Coated Coils In atmospheres where high corrosion is anticipated a corrosion resistant coating is
applied to the aluminium fins of either phenolic or epoxy, dependent upon size.
Coil Guards
Guards can be fitted to each of the outer coils to protect against damage.
Electronically
Commutated (EC) Fans ES
Each fan incorporates on board electronics with AC/DC Conversion and inverter
driven DC motor control to offer unparalleled high efficiency levels combined
with smooth stepless speed control and quiet operation.
Sickle blades reduce air turbulence to minimise sound levels and power
consumption whilst maximising performance.
The long bellmouth design provides improved aerodynamics, up to 10% more
air movement, and an extended vertical throw of air to reduce the chance of air
re-circulation. As standard the enclosure is complete with an integral
fingerproof grille.
The fans offer maximum airflow performance while keeping sound levels to
a minimum.
For further details, please refer to Design Features & Information , on page 46.
Economiser ES
Controlled by a dedicated EEV, the economiser optimises compressor
performance at full and part load operation; refer to
Design Features &
Information , on page 46 for further details.
3 Row Free Cooling Coil A 3 row free cooling coil shall be available to enhance the full free cooling potential of the
chiller.
Compressor Power Factor
Correction When applied to the motors of each compressor, the compressor power factor is
controlled to a minimum operating value of 0.95 at the full operating capacity. This
satisfies many supply authorities that may impose surcharges on equipment with power
factor less than 0.95.