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Hanbell RC2-370B - User Manual

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5580 Enterprise Pkwy., Fort Myers, FL 33905 O󰀩ce (239) 694-0089 Fax: (239) 694-0031
www.mcscontrols.com
High-efciency
Model
RC2 Series
Screw Compressor
New generation of
innovative design
Screw compressor
TECHNICAL MANUAL
VERSION 2.0 -10-18-2018

Table of Contents

Questions and Answers

  • M
    Miss Barbara Hill MDAug 15, 2025
    Why is the discharge temperature high in my Hanbell RC2-370B Air Compressor?
    • M
      Melanie WalkerAug 15, 2025
      High discharge temperature in a Hanbell Air Compressor can stem from several issues: * Insufficient refrigerant: Check for leaks, add refrigerant, and adjust suction superheat to less than 10°K. * Condenser problems: Inspect and clean the condenser to ensure proper heat exchange. * Refrigerant overcharge: Reduce the amount of refrigerant. * Air/moisture: Purify refrigerant and vacuum system. * Expansion valve issues: Adjust suction superheat. * Insufficient lubrication oil: Add oil. * Damaged bearings: Change the bearings. * Improper Vi value: Change the slide valve. * Lack of system cooling: Install liquid injection or oil cooler.
  • N
    Neil KramerAug 18, 2025
    What to do if Hanbell Air Compressor motor thermistor / sensor trips suddenly?
    • N
      Nicholas MaddenAug 18, 2025
      If your Hanbell Air Compressor experiences a sudden trip of the motor thermistor or sensor, it could be due to several reasons: * Low suction pressure: Install liquid injection to the motor coil. * Refrigerant shortage: Charge refrigerant. * Clogged suction filter: Clean the filter. * High suction temperature: Install liquid injection to the motor coil. * High suction superheat: Adjust the superheat to less than 10°K. * Unstable electricity: Check the electricity power supply.
  • C
    Carol WaltersAug 22, 2025
    How to fix abnormal vibration and noise in Hanbell Air Compressor?
    • J
      James MitchellAug 22, 2025
      Abnormal vibration and noise in your Hanbell Air Compressor can arise from: * Damaged bearings: Change the bearing. * Liquid compression: Adjust proper suction superheat. * Rotor friction: Change screw rotors or/and compression chamber. * Insufficient lubrication oil: Add oil. * Loosen internal parts, friction between slide valve and rotors, external debris: Dismantle the compressor and change the damaged parts. * Electromagnetic sound of the solenoid valve: Check. * System harmonic vibration: Check the system piping and if possible improve it using copper pipe. * Motor rotor rotates imbalance: Check and repair.
  • D
    David MartinezAug 25, 2025
    Why does my Hanbell RC2-370B fail to start or have Y-Δ starter shifting failure?
    • J
      James MontesAug 26, 2025
      If your Hanbell Air Compressor fails to start or the Y-Δ starter shifts incorrectly, consider these potential causes: * Slide valve piston issue: Check if the unloading SV is energized once the compressor shuts down. Unload the compressor before shot down. * Incorrect voltage: Check the power supply. * Voltage drop/contactor failure/phase failure: Check the power supply and the contactor. * Motor breakdown: Change the motor. * Incorrect power connection: Check and re-connect. * Y-Δ timer failure: Check or replace. * Closed valve: Open the stop valve. * Improper Y-Δ wiring: Check and re-connect the wiring. * Rotor locked/Earth fault: Check and repair. * Protection device trip: Check.
  • S
    Stephanie CrawfordAug 28, 2025
    What causes oil loss in a Hanbell RC2-370B?
    • J
      Jennifer JonesAug 29, 2025
      If your Hanbell Air Compressor is losing oil, possible causes include: * Lack of refrigerant: Check for leaks and add refrigerant. * Improper system piping: Check and correct the piping or install an external oil separator. * Liquid fills back: Maintain suitable suction superheat at compressor.
  • E
    Edward TorresSep 1, 2025
    Why is my Hanbell RC2-370B Air Compressor unable to load?
    • H
      Hannah CharlesSep 1, 2025
      If your Hanbell Air Compressor is unable to load, consider the following: * Low temperature/high oil viscosity: Turn on the oil heater before compressor start. * Clogged capillary: Clean or replace capillary. * Solenoid valve issues: Clean/purge the valve core or replace the coil. * Clogged oil line: Check and clean the compressor oil circuit. * Piston issue: Change piston or piston ring. * Clogged oil filter: Clean oil filter (replace if needed). * Small pressure differential: Minimum pressure differential is 4 bar. Consider to install an oil pump.
  • L
    laceyrobinsonSep 4, 2025
    What causes a Hanbell RC2-370B Air Compressor to be unable to unload?
    • D
      Diana HallSep 4, 2025
      If your Hanbell Air Compressor is unable to unload, it could be due to: * Modulation solenoid valve clogged or burnt: Clean or replace the solenoid valve. * Worn/broken piston rings or damaged cylinder: Change piston (if cylinder damaged severely, change the cylinder). * Insufficient lubrication oil: Add oil if necessary. * Leakages at internal discharge cover plate end side: Check or replace the gasket and tighten the bolts. * Solenoid valve voltage misused: Check the control voltage. * Piston stuck: Change the piston set, and check the cylinder and slide valve. * Capacity control logic unsuitable: Check.
  • S
    Susan StewartSep 7, 2025
    What causes low suction pressure in a Hanbell RC2-370B Air Compressor?
    • W
      Wendy Brown DDSSep 7, 2025
      If your Hanbell Air Compressor has low suction pressure, check for: * Lack of refrigerant: Check for leaks and add refrigerant. * Dirty/iced evaporator: Defrost or clean coil. * Clogged liquid line filter drier: Replace the cartridge. * Clogged suction line/strainer: Clean or change suction strainer. * Expansion valve malfunctioning: Check and reset for proper superheat. * Low condensing temperature: Check means for regulating condensing temperature.
  • T
    Tina AlexanderSep 12, 2025
    What to do if Hanbell RC2-370B does not run?
    • A
      Anne BassSep 12, 2025
      If your Hanbell Air Compressor does not run, check these potential causes: * Motor line open: Check. * Tripped overload: Check the electrical connection. * Screw rotors seized: Replace screw rotors, bearings etc. * Motor broken: Change motor.

Summary

Specifications and description of design

Compressor specifications

Details technical specifications for RC2-A and RC2-B series compressors.

RC2 series compressor construction

Illustrates and lists components for different RC2 series compressor constructions.

Capacity control system

Describes how refrigeration capacity is adjusted using slide valves and oil pressure.

3 or 4-step capacity control system

Details the operation of compressors with discrete capacity control steps.

Continuous (stepless) capacity control system

Application limits

Lubricants

Compressor handling and installation

Compressor lifting

Mounting the compressor

RC2 compressor outline drawings

Electrical data and design

Motor design

Compressor protection devices

Lists and explains various protection devices essential for compressor safety.

Power supply

Details voltage limitations, frequency, and unbalanced voltage considerations.

Grounding

Operation and maintenance

Compressor start-up

Outlines required procedures and checkpoints before compressor start-up.

Troubleshooting

Provides a guide to common problems and their corrective actions.

Selection software

24 Month Warranty

Hanbell RC2-370B Specifications

General IconGeneral
BrandHanbell
ModelRC2-370B
CategoryAir Compressor
LanguageEnglish

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