General Information
Purchasing Denyo isn’t just buying a machine; instead, you are being welcomed into a bustling world of opportunities, with the right pipelines for your business to grow and increase exponentially. Our superior machines are built to perfection through a unique, integrated production process and are able to operate reliably without disruption, where other competitors/imitators falter and fail. They stand the test of time in the harshest environments and under the most challenging conditions.
In Denyo United Machinery, we make direct sales to potential end-users. With active usage of Denyo products in over 130 countries worldwide, we continually connect our partners and dealers globally to meet the increasing demand for Denyo generators and related equipment across the region. Find the Denyo authorised dealer in your country.
Generators are mandatory for an event that takes place outside, and to avoid any technical faults, you’ll need a reliable source of power. However, first, you will need to determine the Output Rating (kVA) required for all the items you plan to use with the generator, including their dimensions and any other specific requests you may have. Based on the specifications provided, our experienced staff will recommend the most suitable generator from our fleet of machines.
Yes, you can. We operate the regional centre for genuine parts and accessories, covering Denyo’s full range of generators and other equipment. This ensures consistent inventory availability, allowing for speedy replacements and getting you back on track quickly. Send your enquiry from here!
Yes, you may. We provide service, maintenance, and parts replacement for all Denyo equipment. Kindly contact us for more information.
Unfortunately, we do not offer any rental services.
Engine Generator Related
If the two poles of a battery are connected with a lead wire, the current will flow from the positive pole to the negative pole. Thus, the current flowing in a single direction is referred to as direct current. Oppositely, the current with periodically alternating flow directions is called alternating current. The flow direction of electricity supplied to a home alternates several tens of times per second. Such electricity is called alternating current.
Alternating current features the ease of varying voltage, unlike direct current. Electricity was initially supplied in direct current, but alternating current has been in its prime since the emergence of the alternating current generator.
The flow direction of an alternating current is periodically reversed. The frequency is the number of cycles of reversing per 1 second, and the unit is Hertz (Hz).
The electricity used in Japan is alternating current, with a frequency of 50 Hz in eastern Japan and 60 Hz in western Japan. Attention must be paid to frequency because some electrical appliances are not operable if the frequency is incorrect. For example, not only will the brightness and lifetime of a fluorescent lamp and mercury lamp be influenced, but also a fire may be caused due to heating. Furthermore, the speed of some of the devices equipped with a motor may vary according to the frequency.
The electricity supplied to the home has a 100 V or 200 V single-phase 3-wire electrical circuit and is used with electrical appliances (2-wire) of 100 V or 200 V. However, if a large amount of electricity is used, three-phase (3-wire) electricity is used. This is because the three-phase alternating current will reduce the wiring cost, and a simple motor (induction motor) can be used.
Engine Welder Related
This happens when a certain component is burnt due to overloading of the machine – commonly occurring on the Control Board, Reactor, or Transistor of the Control Unit 35B. This occurs when the usage guidelines are not followed, leading to malfunction. When faced with this problem, send in your faulty unit for our technician to conduct a thorough inspection and proceed with repairs of the welder.
Constant Current Characteristic: There is no current fluctuation with the arc voltage fluctuation during welding. This results in a uniform welding bead. There is less likelihood of a broken arc because there is no fluctuation in welding current caused by fluctuation in arc length through an unsteady hand while welding. Accordingly, it is regarded as a characteristic that prevents defective welding. Furthermore, it facilitates welding with a set current not influenced by cable drop in the welding cable.
Drooping Characteristic: There is a decrease or increase in welding current dependent on welding output voltage fluctuation. This causes non-uniform penetration of beads due to current fluctuations against arc voltage fluctuations caused by unsteady hands, etc., during welding, especially when the welder is inexperienced. Additionally, it may lead to a defective weld, such as slag inclusion, when the welding current decreases. It is, therefore, a characteristic which makes the arc difficult to control. However, it also depends on the welder: variations in arc length will influence welding current through variations in arc voltage. Accordingly, an adjustment may be made to the incoming heat through the operation of the welding rod, the bead width and depth, or drooping prevention with fine manual adjustments. A short-circuit current in excess of the setup current occurring at the start of the arc improves both the arc starting characteristic and the unsteady arc. Due to this characteristic, a welding current drop will occur because of the cable drop during welding.
For the optimal performance of welding materials, there are specific handling and storage precautions. First, coated electrodes should be handled carefully. Do not throw or drop, because the coating agent may be dislodged by a strong shock. The raw materials, such as minerals, are bound using liquid glass. If left in a location where rainwater splashes or a location with high humidity, cavity defects such as pitting may occur.
A wire spool for CO2 arc welding is made of plastic resin and is vulnerable to shock. If it is thrown or dropped, the wire can be pinched by a deformed spool or become inoperable due to a broken spool. Holding the spool flange will cause a pinched wire; carefully hold the inside of the barrel. If moisture adheres to the wire, it will rust, causing imperfect feeding or cavity defects. Store and handle carefully to avoid wetting by rainwater.
Engine Compressor Related
The flow rate of air sucked by a compressor for a certain period of time is called air capacity, represented as Q [m³/min]. It is commonly called gas volume, but it is called air capacity only in the case where air is sucked. For a fan, it is referred to as airflow.
For compressors, even when air is used with a certain amount of pressure on the discharging side, the air capacity on the discharging side is not used. Instead, the air capacity on the intake side of the compressor is measured, with conversion based on the temperature, pressure, and humidity at the inlet. When the term “air capacity” is used, it means the intake air capacity. Since gases change their volume substantially depending on pressure and temperature, if discharged air capacity is used, it is always necessary to indicate its pressure and temperature at that location.
Air capacity in intake status means the status of wet air at a condition of 20°C temperature, 760 mmHg absolute pressure, and 65% humidity. Air capacity in standard status means dry air at 0°C temperature, 760 mmHg absolute pressure, and 0% humidity (normal air capacity). Roughly, normal air capacity (Nm³/min) = air capacity on brochure (m³/min) × 0.85.
Ensure you use the start-up discharge valve for easier engine start-up. Also, ensure that you use engine oil with an appropriate viscosity suitable for different temperatures.
If water stands in the compressor, the compressor oil will emulsify, losing its function, which results in the malfunction of the bearing in the compressor (air end), corrosion of various pipes, and other troubles. For this reason, ensure that you use the designated compressor oil and utilise the bypass valve to control the temperature within the appropriate range. Release water content with the discharge air to the outside of the machine so that water content won’t stand within the compressor.
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