1.The main International advanced semi-closed screw compressor in
motor and compressor are organically integrated to ensure no
leakage of the shaft
2.Control programs for start and stoppage are applied to double or
multiple compressors so as to balance the load and extend the
service life of each component.
3.Several refrigeration circuits are provided for double or more
compressors. When one circuit needs maintenance, other circuits can
work properly as alternative circuits.
4. The compressor is started with unloading and decompression to
avoid the impact to the power grid.
5.The vortex and propeller of the compressor is designed to ensure
extremely low noise.
6. H/W structural design, favourable thermal radiation.
7.Heat exchanger has the national pressure vessel certificate.
Comprehensive Security Protection
1.Pressure Protection: high pressure protection and low pressure
2.Electric Motor Protection: lost voltage protection, incomplete
phase protection, reverse phase protection, overload protection,
overheating protection, Anti-freezing Protection: the unit shall be
stopped when the freezing water temperature is too low.
3.Safety Valve Protection: when the refrigerant pressure exceeds
the given value, the
safety relief valve will be automatically started.
4. All the aforementioned protection can ensure the unit a safe and
Low Cost for Operation and Maintenance
1.The unit can be controlled by intelligentized program in
accordance with the needs of the load. 100%,75%, 50%, 25% (start
up), 0. By so doing, the energy can be saved.
2.The number of all components of screw compressor is 10% of the
reciprocating compressor. The former is structurally simple, with
fewer vulnerable components.
Besides, it is not equipped with inlet and outlet valve and is of
extremely low failure rate due to its low insensitivity to humidity
3.The screw compressor can run for 40,000 hours without any
1.The unit is so structurally compact that it only covers a little
floorage to save the space of the machine room.
2.Prior to the shipment, flow switch has been equipped inside the
3.Due to the little vibration of the unit, the base can be provided
with no anti-vibration measures.
4.The pipes of the evaporator and the condenser are only required
to be connected in time of installation.
The feature of Screw Compressor
1.Fluorine-resistant electric motor of high efficiency and
reliability imported from France
2.The latest 5-6 asymmetrical gear form of the third generation
3.Four-section volume control continuous capacity adjustment
unloading control system
4.Equipped with German FAG and Swedish SKF high-precision bearing
Shiwoer effect oil separator
5.Low vibration and noise
1.German SIEMENS PLC, human interface with whole Chinese character
display; Italian CareL text indicator.
2.Automatically monitor the outlet temperature of freezing water
and adjust the compressor through PLC autocontrol slide valve which
can save energy.
3.Directly and clearly display water temperature points and
operation times through PLC;
4.Automatically record and store the recent fault alarm and the
time and prompt the suggestions on the fault treatment;
5.The original parameters such as inlet and outlet water
temperature, the position of slide valve, each protection point of
the unit and pressure can be rectified (via password) in accordance
with the actual needs.
Operation Status Display (PLC)
1.The operation status of the unit is displayed in the animated
manner, including the operation of the compressor, the flow status
of refrigerant, water flow and temperature display;
2.Gain a thorough understanding of the operation of the unit.
Original Refrigerating Components and Electric Apparatus
Relay, heat protector, expansion valve and pressure controller; the
drier-filter adopts the world famous brand product, which greatly
increases the reliability of the whole machine.
1. Refrigerating operation conditions: freezing water inlet
temperature 12 C, outlet temperature 7 C,environment temperature35
2.This series of the unit is controlled by programmable PLC
controller and temperature controller which imported from abroad.
3. Power supply specification: 3P-380V-50Hz,Three-phase four-wire
power supply is recommended, with the allowable voltage fluctuation
of ±10% and frequency fluctuation of ±2%..---other power supply,
please ask the parameter directly from our company.
4. The noise is measured at the position1.5 m in height and 2m in
front of the unit. The noise measurement takes the mean value of
four values measured at the left and right, in the front and at the
rear of the unit.
Supply the Total Cooling Water System
1. Supply the total cooling water system design and the main parts
of the system,
2. More choices for the brand of the parts of the chiller,
3. Give Best plan for your cooling water system project, including
the selection, project drawings.