Refrigerating Compressor; Condenser (Air-Cooled); Condenser Water Regulating Valve (Water-Cooled) - Fini RD 185-810 User Manual

40069 Zola Predosa (BO) - ITALY
The refrigerating compressor is the pump in the system, gas coming from the evaporator (low pressure
side) is compressed up to the condensation pressure (high pressure side). The compressors utilized are
manufactured by leading manufacturers and are designed for applications where high compression ratios
and wide temperature changes are present.
The hermetically sealed construction is perfectly gas tight, ensuring high-energy efficiency and long, useful
life. Dumping springs support the pumping unit in order to reduce the acoustic emission and the vibration
diffusion. The aspirated refrigerating
cylinders cools the electric motor. The thermal protection protects the compressor from over heating and
over currents. The protection is automatically restored as soon as the nominal temperature conditions are
reached.
The condenser is the element in which the gas coming from the compressor is cooled down and condensed
becoming a liquid. Mechanically, it is formed by a copper tubing circuit (with the gas flowing inside)
immersed in an aluminium blades package.
The cooling operation occurs via a high efficiency axial ventilator which, in applying pressure on the air
contained within the dryer, forces it into the blades package.
It's mandatory that the temperature of the ambient air will not exceed the nominal values. It's important TO
KEEP THE UNIT FREE FROM DUST AND OTHER IMPURITIES.
The condenser is the element in which the gas coming from the compressor is cooled down and condensed
becoming a liquid. Basically it is a water/refrigerating gas exchanger where the cooling water lowers the
temperature of the refrigerating gas.
The temperature of the inlet water must not exceed the nominal values. It must also guarantee an adequate
flow and that the water entering the exchanger is free from dust and other corrosive substances.

5.8 CONDENSER WATER REGULATING VALVE (Water-Cooled)

The condenser water regulating valve is used to keep the condensing pressure/temperature constant when
the Water-Cooled is being used. Thanks to the capillary tube, the valve detects the pressure in the
condenser and consequently adjusts the water flow. When the dryer stops the valve automatically closes
the cooling water flow.
The condenser water regulating valve is an operating control device.
The closure of the water circuit from the pressure condenser water regulating valve cannot be used
as a safety closure during service operations on the system.
ADJUSTMENT
The condenser water regulating valve is adjusted during the testing phase to a pre-set value that
covers 90% of the applications. However, sometimes the extreme operating conditions of the dryer
may require a more accurate calibration.
During start-up, a qualified technician should check the condensing pressure/temperature and if
necessary adjust the valve by using the screws on the valve itself.
To increase the condensing temperature, turn the adjusting screws counter-clockwise; to lower it turn
the screws clock-wise. Adjust the valve in order to guarantee a condensing temperature of 42-45 ° C.

5.5 REFRIGERATING COMPRESSOR

gas, flowing through the coils before reaching the compression

5.6 CONDENSER (Air-Cooled)

5.7 CONDENSER (Water-Cooled)
info@finicompressors.it
- EN -