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Schlee (China) Refrigerating Equipment Manufacturing Co.,Ltd

Add:Jupu Road, Pukou Development Zone, Nanjing City, Jiangsu Province, China

Contact us:Annie





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Water Cooled Screw Chiller Working Current
- Jul 10, 2017 -

1) Water Cooled Screw Chiller should be checked for the first time before the power distribution and unit power is consistent with the selected cable diameter can withstand the maximum operating current of the host.

2) Check whether the system is in line with the unit, Water Cooled Screw Chiller the unit power system: three-phase five-wire system (three phase line, a zero line, a ground, 380V ± 10%).

3) Check the compressor power supply line is connected, Water Cooled Screw Chiller if loosened, re-tightened, the compressor wiring with a torque of As the host after long-distance transport and lifting and other factors, the screw may be loose. Doing so may cause damage to electrical components in the main control cabinet (eg air switches, AC contactors, etc.) and compressor.

4) Check with a multimeter for all electrical wiring and check that the wiring is properly installed. Check with the megohm, make sure that there is no housing short circuit. Check that the grounding wire is properly installed and the insulation resistance is greater than 2MΩ. Check whether the power cord is in compliance with the capacity Claim.

5) Check whether the power supply line on the supply unit is equipped with an on-off switch.

6) to the control cabinet of the main circuit of all wiring and control circuit external wiring control wiring diagram a comprehensive check before the power can be energized (such as crankcase oil heater, Water Cooled Screw Chiller compressor electronic protector, circulating water temperature sensor, Water Cooled Screw Chiller target flow switch wiring, water pump Of the joint control, etc.); check the terminal bolts are tightened, no loose phenomenon. Check the electronic control instrument, electrical installation is correct, complete and effective, Water Cooled Screw Chiller check the inside and outside the control cabinet, especially the point on the wiring is clean no debris.

7) Check the above items to the control cabinet power, the power indicator light, then the oil heater began to work, observe the phase sequence protector is normal, Water Cooled Screw Chiller such as phase sequence protection normal (green light) to close the control cabinet unipolar switch (QF2) control loop to work, touch screen (text display) and PLC controller all put into operation

8) Check whether the external system of the unit to meet the boot conditions (such as the system cold water pump and cooling water pump is the external control or the main interlock, Water Cooled Screw Chiller external control in the open before the first need to open the pump.

Refrigeration Compressor with well-known brand semi-closed screw compressor,Water Cooled Screw Chiller equipped with 3/4-stage capacity adjustment system or continuous (no-stage) capacity adjustment system Two capacity adjustment system are controlled by the slide valve, piston rod, Water Cooled Screw Chiller piston cylinder and Piston ring, built-in suction filter, Water Cooled Screw Chiller oil filter, oil separator, safety valve and protection module, no leakage, Water Cooled Screw Chiller low noise, stable operation. The use of high efficiency shell and tube heat exchanger for the unit condenser and evaporator, control components used in all well-known brands, Water Cooled Screw Chiller as well as a number of security features, making the unit safe, Water Cooled Screw Chiller reliable and efficient energy-saving. Multiple units of the compressor using multiple refrigeration circuit, which fails all the way, Water Cooled Screw Chiller the rest of the circuit can still work properly.