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Micro control systems Hanbell RE-MI Series Technicial Manual

Permanent magnet vfd screw compressor permanent magnet motor & variable volume ratio high cop & iplv & seer dedicated to r134a, r513a, r450a, r1234ze, r1234yf, r515b
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RE-MI Series
TECHNICIAL MANUAL
RE-MI Series
Permanent magnet motor &
Variable volume ratio
Permanent Magnet VFD
High COP & IPLV & SEER
Screw Compressor
Screw compressor dedicated to:
R134a, R513A, R450A
R1234ze, R1234yf, R515B

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  • Page 1 RE-MI Series TECHNICIAL MANUAL RE-MI Series Permanent magnet motor & Variable volume ratio Permanent Magnet VFD High COP & IPLV & SEER Screw Compressor Screw compressor dedicated to: R134a, R513A, R450A R1234ze, R1234yf, R515B...

  • Page 2: Table Of Contents

    General ............................. 2 Specifications and description of design ................2 2.1 Compressor nomenclature ....................2 2.2 Compressor specifications ....................3 2.3 Design features ........................3 2.4 Compression process ....................... 4 2.5 Compressor volume ratio (Vi) ................... 5 2.6 Application limits ....................... 6 2.7 Rated Current and Compressor Maximum Continuous Current (MOA) ......

  • Page 3: General

    Hanbell, a global leader of compressor designer and manufacturer, continues giving its effort on the solutions of energy efficiency and new technology. Hanbell RE-MI series screw compressor is designed and manufactured to provide the exemplary standard for variable frequency drive (VFD). The compressor has built-in three-phase, six-pole permanent-magnet synchronous motor and exceptional variable compression ratio mechanism.

  • Page 4: Compressor Specifications

    2.2 Compressor specifications COMPRESSOR MOTOR LUBRICANT WEIGHT Displacement Rotation Primary CHARGE MODEL Vi Control Nominal HP at 3,600 RPM Speed Range Voltage Starting m /hr Step A motor B motor RE-340A(P)MI RE-340B(P)MI RE-380A(P)MI RE-380B(P)MI RE-420A(P)MI RE-420B(P)MI RE-480A(P)MI RE-480B(P)MI RE-550A(P)MI RE-550B(P)MI RE-620A(P)MI 1200 ~ 380 ~ 480...

  • Page 5: Compression Process

    Oil separator- An oil separation chamber made of ductile material is inbuilt with RE-MI compressor. It is designed for high efficient oil separation and simplified system oil circuit to manage the oil inside the compressor. The three-stage oil separation and low-pressure-drop demister also minimize refrigerant dilution in the oil. Protection modules- RE-MI screw compressor is built in motor PTC thermistor and motor temperature sensor gives a full-time protection on motor from running at high temperature.

  • Page 6: Compressor Volume Ratio (Vi)

    2.5 Compressor volume ratio (Vi) The volume ratio (Vi) of the compressor can be defined as the ratio of suction volume to discharge volume in the compressor. The smaller the concavity of slide valve in the discharge end means the larger the volume ratio. The volume ratio directly affects the internal compression ratio (Pi).

  • Page 7: Application Limits

    2.6 Application limits The compressor load varies significantly at different types of refrigerant, it is important to monitor the operation conditions and make sure the actual saturated evaporating and condensing temperature within the compressor operation range. a. RE-340AMI ~ RE-1150AMI (R134a/R513A/R450A/R1234yf) : b.

  • Page 8: Rated Current And Compressor Maximum Continuous Current (Moa)

    Note: 1. Yellow area: Please contact HANBELL for further operating recommendation. 2. Compressor running continuously at partial load will cause insufficient cooling to motor coils. Hanbell suggest an installation of liquid injection to motor to ensure additional cooling to motor coils, please contact. Hanbell for choosing the thermal expansion valve for liquid injection.

  • Page 9: Inverter Installation And Operation

    3. Inverter Installation and Operation 3.1 Inverter Selection To drive RE-MI series with an inverter, please read the following check points for selecting suitable inverter: Refer to the values of MOA and select suitable inverter spec which is higher than MOA at least. Select the suitable inverter which produces side effects of harmonics mildly because harmonics from inverter impact the motor efficiency and power factor negatively.

  • Page 10: Lubricants

    4. Lubricants The main functions of lubrication oil in RE-MI compressors are lubrication for bearings, compression chamber sealing, controlling discharge temperature, and Vi adjustment. When bearings are in service, they require steady lubrication. Oil flow in compression chamber creates a film of oil for sealing in the compression housing to increase efficiency and dissipate compression heat.

  • Page 11: Pre-Cautions Of Changing Oil

    4.2 Pre-cautions of changing oil 1. To use only Hanbell certified oil and do not mix different brands of oil together. Selection of oil should match characteristics of the refrigerant used. Oil remained in the compressor should be totally cleaned up in the system before charging new oil.

  • Page 12: Mounting The Compressor

    5.2 Mounting the compressor The installation of the compressor in the refrigeration system should be accessible and make sure that the chiller base or site is far enough from the heat source to prevent heat radiation. The compressor should also be installed as close as possible to the electrical power supply for easier connection and must keep good ventilation and low humidity condition in the site.

  • Page 13: Re-Mi 2D Diagram

    5.3 RE-MI 2D diagram 5.3.1 RE-AMI It em Na m e No t e It em Na m e Not e HP c on nec t or 1 / 4 " Flar e Oil h ea t er 1 1 0 V/ 2 2 0 V, 3 0 0 W LP c on nec t o r 1 / 4 "...
  • Page 14 No . Na m e No t e No . Na m e No t e 1 / 4 " Fla r e Oil d r a in va lve 1 / 4 " Fla r e HP c o n n ec t io n 4 0 4 .5 1 3 4 1 .5 3 5 5...
  • Page 15 Na m e No t e Na m e No t e No . No . 1 / 4 " Fla r e Oil d r a in va lve 1 / 4 " Fla r e HP c o n n ec t io n LP c o n n ec t o r Oil inlet c o nnec t or 1 / 2 "...
  • Page 16 Nam e No t e Na m e No t e Oil d r a in valve 3 / 8 " Fla r e 1 / 4 " Flar e HP c on nec t io n LP c o n nec t or 3 / 4 "...
  • Page 17 Na m e No t e Nam e No t e No . No . HP c onnec t ion 1 / 4 " Flare Oil drain va lve 1 / 4 " Flar e 3 / 4 " Flar e LP c onn ec t or 1 / 4 "...
  • Page 18 UNIT SI: mm Imperial: [in] 5.3.2 RE-APMI It em Na m e No t e It em Nam e No t e HP c on n ec t o r Ch ec k va lve 1 / 4 " Flar e LP c o n nec t or 1 / 4 "...
  • Page 19 It em Na m e No t e It em Na m e No t e Ch ec k va lve HP c o nn ec t o r 1 / 4 " Flar e LP c o n n ec t o r Su c t ion f la ng e 1 / 4 "...
  • Page 20 Na m e No t e Na m e No t e No . No . 1 / 4 " Fla r e HP c o nn ec t io n Ch ec k valve LP c on n ec t or 1 / 4 "...
  • Page 21 Nam e No t e Nam e No t e Ch e c k va lve HP c o n n ec t io n 1 / 4 " Fla r e LP c o n n ec t o r 1 / 4 "...
  • Page 22 No . Na m e No t e No . Na m e No t e 1 / 4 " Fla re 5 " Su c t io n f la n g e HP c o n n ec t io n 1 / 4 "...
  • Page 23 Nam e Not e No . No . Nam e Not e Su c t io n f lan g e HP c o n nec t io n 1 / 4 " Fla r e 6 " 1 / 4 " Fla r e LP c o n n ec t o r 1 / 4 "...
  • Page 24 5.3.3 RE-BMI It em Na m e Not e It em Na m e Not e HP c o n n ec t o r 1 / 4 " Fla r e Oil hea t er 1 1 0 V/ 2 2 0 V, 3 0 0 W LP c o n nec t o r 1 / 4 "...
  • Page 25 Na m e No t e Na m e No t e 1 / 4 " Fla r e Oil d r a in valve 1 / 4 " Fla r e HP c o n n ec t io n LP c o n n ec t o r Oil in le t c o n n ect o r 1 / 2 "...
  • Page 26 Na m e No t e Na m e No t e Oil d r a in va lve 1 / 4 " Fla r e 1 / 4 " Fla r e HP c o n n ec t io n LP c o nn ec t o r Oil in let c o n n ec t o r 1 / 2 "...
  • Page 27 Na m e No t e Na m e No t e 3 / 8 " Flar e 1 / 4 " Flar e Oil dr a in valve HP c o nnec t ion 1 6 9 0 3 / 4 " Fla r e LP c onn ec t or 1 / 4 "...
  • Page 28 No . Na m e No t e Na m e No t e HP c o n nec t ion 1 / 4 " Fla re Oil d r ain valve 1 / 4 " Fla r e LP c o n nec t or 1 / 4 "...
  • Page 29 UNIT SI: mm Imperial: [in] 5.3.4 RE-BPMI It em Na m e No t e It em Nam e No t e Ch ec k va lve HP c on n ect o r 1 / 4 " Flar e Su c t io n f lan g e LP c o n nec t or 1 / 4 "...
  • Page 30 It em Na m e No t e It em Na m e No t e Ch ec k va lve HP c o nn ect o r 1 / 4 " Flar e LP co n n ec t o r Su c t ion f la ng e 1 / 4 "...
  • Page 31 Na m e No t e Na m e No t e No . No . 1 / 4 " Fla r e HP c o nn ec t io n Ch ec k valve 1 / 4 " Flar e Su c t io n f la ng e 4 "...
  • Page 32 Nam e No t e Nam e No t e Ch e c k va lve HP c o n n ec t io n 1 / 4 " Fla r e LP c o n n ec t o r 1 / 4 "...
  • Page 33 No . Na m e No t e No . Na m e No t e 1 / 4 " Fla re 5 " Suc t io n f la n ge HP c o n n ec t io n 1 / 4 "...
  • Page 34 Nam e Not e Nam e Not e Su c t io n f lan g e HP c o n nec t io n 1 / 4 " Fla r e 6 " 1 / 4 " Fla r e LP c o n n ec t o r 1 / 4 "...

  • Page 35: Compressors Accessories

    5.4 Compressors accessories Accessory table Standard, Optional 340 380 420 480 550 620 710 820 920 1050 1150 Vi control solenoid valves & coils Dual-plate horizontal discharge check valve Suction & discharge connection bushings Discharge stop valve Synthetic lubricant Suction filter Suction &...
  • Page 36 Description of bushings Suction and discharge bushings Discharge Suction Model Copper pipe Steel pipe Copper pipe Steel pipe RE-340MI 2 1/2" 2 5/8" 4" 4 1/8" RE-380MI 2 1/2" 2 5/8" 4" 4 1/8" RE-420MI 2 1/2" 2 5/8" 4" 4 1/8"...
  • Page 37 a. Discharge/suction piping size Hanbell suggests enlarging discharge & suctioning pipes to achieve the highest running efficiency. Dual-plate discharge Model Material Type Suction size Discharge size check valve size Standard 3” 3” Steel P type 3” 3” RE-340 Standard 5 1/8” 3 1/8”...
  • Page 38 c-1. Pipe connection of compressors c-1-1. Suction pipe: We suggest to use reducers to enlarge the suction pipe size. The location of reducers should be closed to the compressor suction port. For example as below: RE-620’s suction port is 5 inch. Please use a reducer to connect 5” bushing and 6-inch pipe to achieve high operation efficiency.
  • Page 39 c-1-3. Discharge pipe (RE-APMI / RE-BPMI, P-type) We suggest using reducers to enlarge the discharge pipe size. The location of reducers should be closed to the compressor discharge port. For example as below: RE-620APMI’s discharge port is 4 inch. Please use a reducer to connect 4” bushing and 5-inch pipe to achieve high operation efficiency.
  • Page 40 d-1 Assembly of Dual-plate discharge check valve (with flanges & bolts) Figure: Assembly of Dual-plate discharge check valve (with flanges & bolts) Steel pipes: SIZE Weight(kg) (ID of flange) INCH 2.5” 190.5 74.6 15.6 3” 209.6 90.7 4” 5" 279.4 143.7 6"...
  • Page 41 d-1-1. Installation of Dual-plate discharge check valve d-1-1-1. When installing the check valve in the pipeline, it is necessary to follow the gas flow direction indicated on the check valve. d-1-1-2. In horizontal pipelines, the check valve needs to be installed as showed as below to ensure that it can be opened uniformly.
  • Page 42 e. Suction and discharge stop valves For compressor maintenance, it is recommended to install suction and discharge stop valves. Discharge stop valves need to be installed after the dual-plate discharge check valve to avoid excessive pressure-drop loss. Please refer to following details of Hanbell stop valves.
  • Page 43 Protection Circuit Press Button L1 L2 (NC) INT 69Y / INT 69 HBY Power Contactor Supply Discharge Temp. Motor INT69HBY Press Button (NC) Discharge A:PTC Power Temp. PTC B:Pt100 / Pt1000 (Option) Supply Figure: INT69HBY & PTC connection diagram Other major functional descriptions are as follow: The temperature monitoring in the motor winding is according to the static evaluation process;...
  • Page 44 35±1 Figure: Oil heater Specification 300W; 110V or 220V; IP 54; UL approval Note: If compressor is installed in low ambient temperature, it is recommended to insulate oil separator against cold ambience. h. Optical oil level switch The optical oil level switch consists of four wire connections. Two of them (OG - orange and GY - gray) are used to connect to the main control loop or any independent loop of a microcontroller.
  • Page 45 i Oil drain valve Oil drain valve is equipped on compressor to drain out oil for maintenance. Figure: Oil drain valve j Terminal box Hanbell designs and makes the cable box which meets IP54 protection degree. Please refer to the dimension of the cable box (for motor power line and control power line) below: 22.2mm 19mm...
  • Page 46 Figure: Oil flow switch piping l. Mounting pads Hanbell supplies mounting pads which shall be installed properly in between compressor feet and chiller base. It helps to reduce vibration and noise during operation, its dimension is shown as follows: unit:mm Model Part No.
  • Page 47 Protection Circuit Press Button L1 L2 (NC) INT 69Y / INT 69 HBY Power Supply Discharge Temp. Connect to temperature controller for 1. controlling the liquid injection solenoid valve. 2. real motor coil protection. 3. another motor coil protection(for high temperature warming or trip).

  • Page 48: Electrical Data And Design

    6. Electrical data and design 6.1 Inverter starting Inverter starting is different from traditional star-delta or part-winding starting methods. The motor voltage and frequency is regulated with a variable frequency drive simultaneously. The advantage is that when the motor voltage is low during start, the starting current and starting torque is low too.

  • Page 49: Compressor Protection Devices

    6.2 Compressor protection devices The table below shows the list of protection devices which are essential to protect the compressor and operate safely. Follow the protection devices listed in the below table to ensure the compressor running under normal condition. Protection device Set point Remark...

  • Page 50: Grounding

    6.4 Grounding There is a grounding terminal on compressor terminal plate. Please connect it to grounding of control panel correctly of the chiller system. Suggestions: a. The regular setting of electric leak protection should be greater than 50mA; for a humid location, 25mA is better. b.

  • Page 51: Operation And Maintenance

    7. Operation and maintenance 7.1 Compressor start-up PRE-START CHECKING Please read following procedures and checkpoints prior to starting-up the compressor during commissioning: Items Things to be checked States or standard values 1. Oil level 1. Higher than the middle line of oil level sight glass 2.
  • Page 52 Compressor Start : In addition to the pre-start checking, please read following guidance carefully before starting compressor: A. It is necessary to pay attention to auxiliary facilities while the chiller is commissioning and after initial start-up. B. In order to keep the Vi control smoothly under the low ambient temperature with the normal viscosity of oil, oil heater should be kept energizing after compressor shut-down for preparation of next start-up.

  • Page 53: Troubleshooting

    7.2 Troubleshooting The table below showed situation personnel may face at the jobsite during commissioning or upon operation of compressor and its corrective actions. This table will only serve as a guide for engineers to understand the situation if they occurs. PROBLEMS PROBABILITY CAUSES REMEDY / CORRECTIVE ACTION...

  • Page 54: Compressor Checking List

    7.3 Compressor checking list Please fill in the compressor checking list and send it to Hanbell, if any failure of compressor happened. Hanbell will reply and suggest solutions to solve the failure. CHECK LIST FOR TROUBLESHOOTING OF HANBELL SCREW COMPRESSOR Compressor model Compressor S/N System design condition (SCT/SST)

  • Page 55: Application Instructions And Precautions

    8. Application Instructions and Precautions 8.1 Auxiliary Cooling When the compressor is used in the following scenarios, it is recommended to install auxiliary cooling devices to reduce the discharge temperature, maintain oil temperature, and cool the motor coils, ensuring the compressor operates safely and efficiently.
  • Page 56 Application of High-temperature Expansion Valve Liquid Injection System By selecting a high-temperature expansion valve that senses the compressor's discharge temperature, the opening of the expansion valve can be controlled based on the temperature range to achieve optimal cooling effectiveness. Generally, it is recommended to control the compressor's discharge temperature at around 80 to 90°C for the best results.
  • Page 57 Air-cooled Cooling System The following figure represents a typical air-cooled cooling system. This cooling method utilizes the continuous circulation of ambient air through the oil cooler to achieve a reduction in oil temperature. Figure: Air-cooled Oil Cooling System Water-cooled Cooling System This cooling method utilizes a shell and tube heat exchanger design and relies on external cooling water from a cooling tower or a closed-loop evaporator for cooling.

  • Page 58: Parallel System Application

    8.2 Parallel System Application In a multiple compressor parallel system, uneven distribution of oil return in the evaporator may occur, leading to uneven oil return to each compressor. Over time, this can result in low oil levels or even oil loss in certain compressors. Therefore, it is necessary to install oil level switches on each compressor and oil flow switches in the oil return line to ensure proper oil return and maintain normal oil levels.

  • Page 59: Oil Pump Application

    8.3 Oil Pump Application When the pressure difference in the system is less than 4 bar, it is recommended to install an oil pump. In situations of low pressure difference, it can affect the operation of the compressor's capacity control device, as well as lubrication and cooling of the bearings.

  • Page 60: Selection Software

    9. Selection Software Please download the latest selection software from the official Hanbell website. http://www.hanbell.com/service_program.html 10. Product Warranty All our compressors undergo strict quality control and performance testing before leaving the factory. During the warranty period, we provide free service for any quality defects or damages caused by manufacturing reasons, as determined by our company.

This manual is also suitable for:

Hanbell re-340amiHanbell re-340bmiHanbell re-380amiHanbell re-380bmiHanbell re-420amiHanbell re-420bmi ... Show all

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