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Hanbell RC2-AVI Series, Manual

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Summary of Contents for RC2-AVI Series

Page 1: ...4 Compressor lifting and installation 10 4 1 Compressor lifting 10 4 2 Compressor mounting 10 4 3 Compressor outline 12 4 4 Accessories 18 5 Electrical data and design 30 5 1 Motor design 30 5 2 Elect...

Page 2: ...until shipment RC2 AVI series compressor is equipped with liquid injection connector economizer port PTC motor temperature thermistors discharge temperature thermistors motor protector oil level switc...

Page 3: ...Bearing seat s cover plate 21 Suction bearings 29 Power bolt 6 Motor rotor washer 14 Modulation slide valve 22 Oil filler cartridge 30 Motor cable cover plate 7 Motor rotor spacer ring 15 Slide valve...

Page 4: ...charge bearings 26 Oil heater 9 Oil separator cartridge 18 Discharge fixed ring 27 Refrigeration Lubricant Figure 2 1 3 RC2 1020AVI RC2 1270AVI Item Description Item Description Item Description Item...

Page 5: ...nt gas going through the motor providing high efficiency under different operating conditions Its winding and insulation is specially made for variable speed drive applications Long life bearings and...

Page 6: ...ity modulation of RC2 AVI is achieved by the variation of motor s rotation speed Compared to modulation by slide valve adjustable rotation speed through VFD significantly enhances efficiency of compre...

Page 7: ...orking condition CR Pd Ps Pi Vi k Vi Vs Vd Where CR system compression ratio Pi internal compression ratio Vi internal volume ratio Pd system pressure absolute pressure Pd discharge pressure absolute...

Page 8: ...aturated suction and discharge operating conditions for continuous operation over extended periods of time It is important to operate within these limits to maintain proper compressor life Operating a...

Page 9: ...n extra oil pump which is necessary for reciprocating compressors However in some special applications it is still necessary to install an extra oil pump to screw compressors for safety Bearings insta...

Page 10: ...sture inside the system it is suggested to clean the system by charging it with dry Nitrogen and then vacuum it repeatedly as long as possible 4 It is a must to change oil especially if the motor has...

Page 11: ...ounting The installation of the compressor in the refrigeration system should be made accessible and make sure that the chiller base or site is far enough from the heat source to prevent heat radiatio...

Page 12: ...ll also recommends use of a copper tube in discharge piping to best minimize abnormal vibration and noise 3 Remove the oxidized impurities swarf or debris caused by welding in the piping tubes if thes...

Page 13: ...12 4 3 Compressor outline SI mm Imperial in UNIT...

Page 14: ...13 UNIT SI mm Imperial in...

Page 15: ...14...

Page 16: ...15...

Page 17: ...16 SI mm Imperial in UNIT...

Page 18: ...17...

Page 19: ...vel switch Oil drain valve Liquid injection system solenoid valve expansion valve Liquid injection system solenoid valve stop valve Horizontal check valve External oil separator External oil filter Oi...

Page 20: ...iping requirements alternative horizontal check valve is accessible Dia Dimension unit mm A B C D E F G H I 2 102 4 65 91 53 70 90 85 6 3 138 4 95 121 80 100 120 108 6 4 163 4 120 146 96 125 145 123 6...

Page 21: ...ns are not indicated in purchasing orders Hanbell will provide standard type Suitable piping of customers choice is also shown in the table below If non standard bushing is needed please double check...

Page 22: ...2 3 90 2 103 Suction Copper 2 5 8 76 145 50 67 87 3 76 6 87 3 1 8 79 8 90 3 5 8 92 4 103 4 102 112 4 1 8 105 1 116 Steel 3 90 2 105 3 1 2 102 8 117 4 115 6 128 RC2 620AVI Discharge Copper 2 66 120 45...

Page 23: ...module to monitor the motor coil temperature and the discharge temperature as well If the temperature in one of the positions monitored exceeds the nominal response temperature of the respective PTC...

Page 24: ...start and poor lubrication due to too low viscosity of lubrication oil In addition Hanbell also offers 300W oil heater to keep adequate lubricant oil temperature for large external oil separator and a...

Page 25: ...ch Figure 4 13 Oil level switch on a compressor Figure 4 14 Oil level switch on an external oil separator g Oil drain valve Oil drain valve is installed in a compressor to drain out oil for maintenanc...

Page 26: ...KOKI JBE E60HFKT 1 j Liquid injection system solenoid valve stop valve This simple liquid injection system adjusts amount of liquid injection by stop valve suitable for application with level load and...

Page 27: ...PCS 8 Oil heater 150W 150W 150W 150W 150W 300W 300W 9 Oil drain valve 1 4 Flare 10 Oil temp protection option 1 8 NPTF 11 Safety valve option 1 2 1 2 1 2 1 1 1 1 2 1 1 2 Dimensions No OS40 OS50 OS65 O...

Page 28: ...e RC2 140 260 300 340 410 430 470 3130 3240AA 5 8 5 8 RC2 550 620 830 10201270 3131 3240AA 3 4 3 4 m Oil flow switch Oil flow switch operates in oil return line between external oil separator and comp...

Page 29: ...provide suitable liquid injection as shown in the diagram below s Condensor s Evaporator Dryer Chiller in Chiller out W U Earth Bolt V B Pt100 Pt1000 Optional A PTC Z Y X B A Controller Electric Plate...

Page 30: ...r to act normally Under such working condition compressor might have difficulties to load itself Oil supply to bearings and internal cooling might be not enough which will cause severe damage to those...

Page 31: ...eral connection diagram of inverter is shown in Figure 5 1 An AC reactor should be installed between the power supply and the inverter in order to prevent power system from serious breakdown Figure 5...

Page 32: ...0 Optional Motor thermistors and discharge thermistors are temperature sensors with quick response while the temperature approach to their set point thermistors must be connected in series to a contro...

Page 33: ...ow the nameplate of compressor 3 Acceleration 50 60 sec from 0Hz to 50Hz deceleration vice versa 6 Compressor motor 1 Motor temperature from Pt100 1000 1 Temperature meter should be correct In additio...

Page 34: ...olt wet or frosty Check if the VFD settings are correct or not Motor power terminal or bolt bad or dusty Bad insulation of magnetic contactors Acidified internal refrigeration system Motor coil runnin...

Page 35: ...oil Improper system piping Check and correct the piping or install an external oil separator Liquid fills back Maintain suitable suction superheat at compressor Lack of refrigerant Check for leaks Cha...

Page 36: ...hen the initial startup the loading of the chiller is heavy due to the high temperature of chilled water so the liquid injection devices capacity should be selected or calculated enough to reduce the...

Page 37: ...coil temperature is high This may lead to motor failure Therefore in applications mentioned above Pt100 or Pt1000 for liquid injection to motor is recommended instead Figure 7 3 Liquid injection high...

Page 38: ...but results in high water usage An indirect cooling system uses a pump to circulate the cooling medium and a cooling tower or evaporative cooler to reject heat from the cooling medium The basic water...

Page 39: ...r 6 Flow switch 11 Dryer 2 Compressor 7 Oil filter 12 Secondary cooler 3 Check valve 8 Oil cooler 13 Muffler 4 Sight glass 9 Expansion valve 5 Solenoid valve 10 Oil separator 7 3 Oil pump application...

Page 40: ...in the suction side When doing the pump down be sure to take notice of the items listed below a Pump down should be done once each time as it may be dangerous to the compressor compression chamber for...

Page 41: ...Calculate button Refrigerant type Compressor model Power supply default is 380V 3 50Hz Evaporating SST default is 5 C Condensing SCT default is 40 C Additional cooling method oil cooler or liquid inj...

Page 42: ...our factory prior to delivery The screw compressors are manufactured by quality materials and under warranty for 1 One year after completion of installation and commissioning at jobsite 2 18 months f...

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