Hanbell RC2-930A 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:

C
Caroline GonzalezAug 14, 2025
Why is the discharge temperature high in my Hanbell RC2-930A Air Compressor?
- C
  Carol ThomasAug 14, 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.
C
Cameron DouglasAug 18, 2025
What to do if Hanbell RC2-930A Air Compressor motor thermistor / sensor trips suddenly?
- R
  Robert BushAug 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.
I
Ian DelgadoAug 21, 2025
How to fix abnormal vibration and noise in Hanbell RC2-930A?
- J
  juliebakerAug 21, 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.
J
Jeffrey MorrisonAug 25, 2025
Why does my Hanbell RC2-930A Air Compressor fail to start or have Y-Δ starter shifting failure?
- E
  Elizabeth WatsonAug 25, 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.
N
nancy47Aug 27, 2025
What causes oil loss in a Hanbell Air Compressor?
- O
  Oscar TannerAug 27, 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
elizabethwilliamsAug 31, 2025
Why is my Hanbell RC2-930A Air Compressor unable to load?
- J
  Jared DavisAug 31, 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.
J
Joshua GonzalezSep 3, 2025
What causes a Hanbell RC2-930A Air Compressor to be unable to unload?
- T
  Tracy CraigSep 3, 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.
R
Ronald MccormickSep 7, 2025
What causes low suction pressure in a Hanbell Air Compressor?
- T
  teresa19Sep 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.
M
Michael MorganSep 10, 2025
What to do if Hanbell RC2-930A Air Compressor does not run?
- D
  David GuzmanSep 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.

Hanbell RC2-930A Specifications

General

Brand	Hanbell
Model	RC2-930A
Category	Air Compressor
Language	English

Summary

2. Specifications and description of design

2.2 Compressor specifications

Lists detailed specifications for RC2-A series compressors.

2.3 RC2 series compressor construction

2.4 Design features

2.6 Capacity control system

2.7 3 or 4-step capacity control system

2.8 Continuous (stepless) capacity control system

2.11 Application limits

a. Application limits of RC2-100~RC2-930

Specifies operating limits for specific RC2 compressor models.

b. Application limits of RC2-1020~RC2-1530

2.12 MCC and LRA

3. Lubricants

4. Compressor handling and installation

INT69HBY Control Module and PTC Temperature Sensor

Explains the motor protection and control system.

4.5 Installation and connection of compressor

Illustrates how to connect the compressor to the system.

5. Electrical data and design

5.1 Motor design

Details the motor types and starting methods used.

5.2 Compressor protection devices

Lists and describes essential compressor protection mechanisms.

5.3 Power Supply

Provides guidelines on voltage and phase requirements.

6. Operation and maintenance

6.1 Compressor start-up

Details the pre-start checks and initial operation steps.

6.2 Troubleshooting

Provides guidance on diagnosing and resolving common compressor issues.

7. Additional cooling

8 Selection software

Selection software installation procedure

Provides step-by-step instructions for installing the selection software.

24 Month Warranty

24 Month Maintenance Records

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