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Freutek JUB0004 Manual

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MACHINE: JUB0004 SCREW COMPRESSOR 22 KW
JUB0004 SCREW COMPRESSOR
22 KW
MANUAL

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Summary of Contents for Freutek JUB0004

  • Page 1 MACHINE: JUB0004 SCREW COMPRESSOR 22 KW JUB0004 SCREW COMPRESSOR 22 KW MANUAL...
  • Page 2 Before installing or starting the compressor for the first time, please read this manual carefully to gain the necessary knowledge about the compressor and understand the precautions to be taken during operation and maintenance. Give this manual to the user with the machine. This technical manual contains important safety information, so it should always be kept with the compressor.

  • Page 3: Table Of Contents

    CONTENTS Chapter I - General Part 1.1 Overview 1.2 System Flow Layout plan of the unit structure The system flow of the compressor 1.2.1 Air systems 1.2.2 Lubrication system 1.3.1 Cooling System (Air Type) 1.3.2 Water System (Water-Cooled) 1.4 Control and Protection System 1.5 Electrical System (Electrical Schematic Diagram below) 1.5.1 Microprocessor controller Chapter II - Installation...

  • Page 4: Safety Statements

    Safety Statements Carefully read and understand the general precautions before proceeding with the other safety precautions. General 1. Handling, installation, operation, maintenance, and inspection of the equipment must be performed by appropriately trained personnel. 2. No liability is accepted for personal injury, failure, or damage to the equipment in the event of modifications made by the user.
  • Page 5 8 When using the crane, the sling should be passed through the fork hole of the bottom plate, and the cover cloth should be placed on the soundproof cover panel (frame) to prevent damage. Slowly lift the air compressor, slings, and the top of the frame at a 45° angle.

  • Page 6: Chapter I - General Part

    Chapter I - General part 1.1 Overview The device is a single-stage, oil-injected stationary screw compressor driven by a motor and equipped with a soundproof cover. The compressor is controlled by an advanced microcomputer controller and liquid crystal display, which can effectively reduce energy consumption and make it easier for the operator to operate and monitor the compressor.

  • Page 7: The System Flow Of The Compressor

    Unit Structure The system flow of the compressor 1.2.1 Ventilation systems The air drawn in by the air filter, through the intake valve, enters the compressor head to be compressed. The mixture of oil and compressed air enters the separation tank for preliminary separation, then into the oil and air separator.

  • Page 8: Lubrication System

    reduces the load, stops when the compressor stops, and prevents compressed air and lubricating oil from separating and escaping the inlet. The minimum pressure valve ensures that the pressure in the separator tank is not less than 0.45 MPa, so that the lubricating oil can flow normally into the system. In addition, the minimum pressure valve is used to prevent the backflow of compressed air into the external pipe when the compressor is unloaded or stopped.

  • Page 9: Cooling System (Air Type)

    particles and impurities present in the lubricating oil, reduce wear on bearings and rotors, and extend service life. 1.3.1 Cooling System (Air-Cooled Model) The cooling system includes the lubricating oil cooler and aftercooler. The fan draws in cold air from outside the unit and blows it through the cooling system; The heat exchange with the compressed air and lubricating oil flowing through the cooler allows the cooling effect to be achieved.

  • Page 10: Electrical System (Electrical Schematic Diagram Below)

    The compressor is controlled by a microcomputer controller that can adjust the operating status of the compressor based on the user's actual air consumption. By closing the intake valve when little air is needed or when not in use, the compressor operates with a light load and switches to the discharged state to save energy.
  • Page 11 Attention: The wiring of the electronic control cabinet must not be dismantled without authorization!

  • Page 13: Chapter Ii - Installation

    Chapter II - Installation 2.1 Compressor Installation Site It is necessary to select the appropriate installation location for the compressor, for which a dedicated installation room is recommended. The installation site must meet the following requirements: The compressor should be installed indoors, with good lighting and enough space for ease of use and maintenance.
  • Page 14 Hot air Tube Hot air Connection Hot air Air inlets Air inlets Air inlets...

  • Page 15: Electrical Safety Requirements

    2.2 Electrical Safety Requirements (Voltage 380V, e.g. 220V, 415V, etc., ensure difference ±5%) The three-phase voltage must be stable between 360~400V. It is suggested to use an independent power supply system to avoid excessive voltage drop or three-phase imbalance caused by using in parallel with other electrical equipment and possible overload of motor current.

  • Page 16: Chapter Iii - Operations

    Chapter III - Operation The operator must read this manual carefully, scrupulously comply with all relevant safety rules, including those indicated in this manual, and be familiar with the characteristics and operating methods of the device. 3.1 First Boot 1. Connect the power cord and ground wire to check if the voltage is correct and if the three-phase voltage is balanced.
  • Page 17 "delta" start-up; Close the air inlet valve slowly, so that the exhaust pressure rises until the unit begins to discharge, checking whether the exhaust pressure matches the set value (if not, it must be adjusted). Observe at the same time if the display tool and the indicator light have any abnormalities.

  • Page 18: Daily Operation

    3.2 Daily Operation 3.2.1 Startup 1. Open the screw cap and ball valve of the separator tank, drain the condensed water to the bottom of the tank after shutting off, and close immediately when the lubricating oil leaks out. Note: Before opening the drain outlet of the separator tank, you must check that there is no pressure in the tank. 2.
  • Page 19 2. Load Start about 6~7 seconds after the engine delta function starts. After 2 seconds, the solenoid valve on the intake valve is energized, the compressed air in the separator tank enters the intake valve and causes it to open, a large amount of air enters the compressor and the latter starts operating at full load.

  • Page 20: Shutdown

    In the standby state, if the air is restored and the exhaust line pressure drops to the return load setting value, the microcomputer controller restarts the unit. When the device is in standby, do not open doors or perform any kind of maintenance to avoid accidents.

  • Page 21: Chapter Iv - Maintenance

    The operator must document the parameters observed during the daily check, noting in particular the exhaust gas pressure, system pressure, exhaust gas temperature, oil level, operating time, etc. 4. The infrared temperature detector can be used to detect temperature and record the supply voltage and current. 3.2.5 Long-term downtime Preparation If the compressor will be idle for a long time, the following preparatory steps should be...

  • Page 22: Replacing The Oil And Oil Filters

    screw compressor. The company's screw compressor lubricating oil is of excellent quality, especially suitable for the use of screw compressors; At the same time, it also has good anti-aging properties, does not mix easily with water or produce emulsions or foam, resists corrosion, and possesses other important properties.

  • Page 23: Maintenance And Replacement Of Other Parts

    4.2 Maintenance and replacement of other parts 4.2.1 Air Filter Maintenance Once the set limit value has been reached, the air filter element and dust collection box must be removed and cleaned or replaced. The filter element should be replaced after 3-4 cleaning cycles.
  • Page 24 4. Clean the gasket of the new oil filter and apply a layer of new lubricating oil to the gasket, 5. Install the new filter on the oil filter seat until the sealing washer touches the oil filter seat and hand tighten (about half a turn). 4.2.3 Maintenance of oil and air separators In general, after about 4000 hours of compressor use it is necessary to replace the separator.
  • Page 25 agent must be used. Do not use brushes or metal products to remove dust. Be sure to keep the surface of the cooler clean. 4.4 Safety Device The safety valve should be checked annually to see if the opening pressure is correct; otherwise, it must be adjusted before continuing to use it.
  • Page 26 the nameplate value by 1% or the voltage deviation exceeds 5%, the motor cannot guarantee the continuous delivery of this power. As soon as the three-phase power imbalance is no more than 1%, the compressor motor can resume regular operation. No intermittent or abnormal sounds or vibrations should be encountered either when the motor is running without load or when under load.
  • Page 27 • That the engine does not emit any abnormal sound; • That the wiring is correct; • Other factors that affect the normal operation of the engine. 3. Start the Jog Air Compressor and observe whether the direction of the motor is consistent with the marked direction;...

  • Page 28: Chapter V - Fault Analysis And Troubleshooting

    Chapter V - Fault Analysis and Troubleshooting 5.1 Overview Compressor failure is due to a number of factors. In this regard, it is important to systematically collect the operating data of the unit. Based on this data, the operator can pinpoint the change in the unit's performance and check for hidden causes of the failure.
  • Page 29 Phenomenon Possible Causes of Failure Troubleshooting Methods 1. Can't start the 1. Blown fuse 1. Contact your electrician for repair or replacement compressor 2. The supply voltage is too low 2. Instruct the electrician to check and make the necessary adjustments 3.
  • Page 30 2. Temperature Control Valve Failure 2. Overhaul or Replacement of Temperature Control Valves 3. Inaccurate temperature sensor 3. Check and replace the temperature sensor 4. Supply pressure lower 1. The user's air consumption is 1. Reduce air consumption than rated discharge higher than the air supply.
  • Page 31 3. Air leakage 3. Check that there are no leaks in the air ducts 4. Oil and air separator blocked 4. Replace oil and air separators 5. Failure of the underpressure valve 5. Inspection/repair of minimum pressure valves 7. Compressed air 1.
  • Page 32 9. Switching loading and 1. Leaks in pipelines 1. Check the location of the leak and remove unloading is too frequent. 2. Pressure settings are too low 2. Zeroing the pressure difference 3. Unstable air consumption 3. Increase the capacity of the air storage tank and, if necessary, install pressure relief valves downstream of the tank.
  • Page 33 Schedule Screw Air Compressor Maintenance...
  • Page 34 DISPOSAL AND DEMOLITION DISMANTLING OR DEMOLITION MUST BE CARRIED OUT BY THE CUSTOMER, IN FULL COMPLIANCE WITH THE REGULATIONS IN FORCE ON THE SUBJECT. CONFERRING THE ENTIRE MACHINE OR PARTS OF WHICH IT IS COMPOSED TO COMPANIES APPOINTED FOR SUCH SERVICES. As the owner of an electrical or electronic appliance, the law (in accordance with the EU Directive 2012/19/EU on waste electrical and electronic equipment and the national laws of the EU Member States that have implemented this Directive) prohibits you from disposing of this product or its...

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