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チラー AIRTAK C-25のPDF 設置、操作、メンテナンスの説明書をオンラインで閲覧またはダウンロードできます。AIRTAK C-25 12 ページ。 Refrigerated water chillers

1. Chilled Water-to-Refrigerant Heat Exchanger (Evaporator):

This exchanger is of the brazed plate stainless steel design. The evaporator is engineered with

maximum efficiency in mind.

2. Water pump: The water pump must be checked for proper direction of operation. Set GPM by amps

compared to pump curve. The discharge ball valve must also be adjusted to regulate the proper

gallon per minute flow to the evaporator as stated on the data label found on the back panel of the

chiller. Failure to do so may result in a lack of water pressure to the equipment being cooled or a

lack of water temperature drop through the evaporator. THE PUMP SHOULD NEVER BE RUN

WITHOUT FLUID TO IT.

3. Air vents: Air vents are required at high points in the system to allow the bleeding of air while filling

the system. These vents are to be supplied and installed by the contractor. A water fill port must be

added to the suction line by the contractor. To fill the system, open all air vents and begin filling with

fluid. When a steady stream of fluid comes from the vents with no air, close the vents. To fill the

expansion tank to the proper level, loosen the small nut at the bottom of the airtrol and allow air to

escape until fluid comes out. Tighten the nut. Circulate the fluid by turning on the pump. Repeat

bleeding of air vents until all air has been removed.

4. Water Tank: On an open system the plastic water tank provided allows for easy filling of the chilled

water circuit. Fill the tank by removing the cap at the top of the chiller. Turn the chiller on activating

the pump to fill piping. Being aware of the water level in the tank, add if it should run low. You

should maintain half capacity in the tank to guarantee a full column of liquid to the pump suction.

The refrigerant compressor used is an industrial type, full hermetic or semi-hermetic. These

Compressors can be either single phase or three phase, depending on the application. The

compressors used are designed for high temperature applications which allows an evaporation

temperature range of 20°F (-7°C) to 50°F(10°C.).

Each compressor motor is fully protected by either an internal or external overload which are of the

automatic reset type. All compressors used are suction gas-cooled and have a wide working range.

The connected electrical load can vary with the compressor load, ambient temperature or cooling water

temperature.

All air cooled condensers used in the AIR/TAK chillers are industrial plate fin type coils, designed for

maximum ambient conditions. Each condenser has a sub-cooling system which permits the condensed

refrigerant to be sub-cooled below the normal condensing temperature to within 10°F of the ambient

temperature. The condensers are forced convection types and fan motor(s) are controlled by pressure

switch(s) (low ambient control). This pressure switch is activated by the condenser head pressure. This

pressure will vary with the ambient temperature and evaporator load. As the pressure increases to a

factory set cut-in pressure, the fan switch is activated and the fan motor starts. The fan removes the

heat within the condenser and lowers head pressure to the factory set cut-out point. With the fan switch

controlling the upper and lower pressure limits, the chiller can operate through a wide range of ambient

and load conditions. When the ambient is high and the chiller is operating at full load, the condenser

pressure and temperature will stabilize and the fan(s) will run continuously.

G. CHILLED WATER CIRCUIT

H. REFRIGERANT CIRCUIT