Delta Servo Motor ECMA-E21830E3

07/07/2020

Earth Hour: Hitachi Central Air Conditioner works with you to speak for the earth

07/12/2024

How to Replace the Solenoid Valve Coil

The solenoid valve coil is one of the important parts of the solenoid valve. Once there is a problem, it will seriously affect the normal use of the solenoid valve.

07/08/2023

Heat Pump Compressor Not Running: Common Issues and Solutions

A heat pump is an energy-efficient heating and cooling system that relies on the process of heat transfer to maintain comfortable indoor temperatures.

07/17/2024

Irrigation Solenoid Valves: Common Faults, Causes and Troubleshooting

Generally, before diagnosing the problem of irrigation solenoid valves (sprinkler solenoid valves), some work needs to be done: such as determining whether the water source is turned on, whether the controller is connected to the power supply and the program setting is correct, whether the flow control handle on the solenoid valve is closed, and then try operating the valve manually.

08/21/2020

How to operate the chiller correctly

For an operating chiller. Environmental conditions, the load has become a fixed value. At this time, the condensing heat load is also a fixed value. It is stipulated that the temperature difference between the inlet and outlet water is 5℃

02/27/2021

Working principle of servo motor (how servo motor works)

The rotor inside the servo motor is a permanent magnet. The U / V / W three-phase electricity controlled by the driver forms an electromagnetic field. The rotor rotates under the effect of this magnetic field. At the same time, the encoder of the motor feeds back the signal to the driver. The driver adjusts the rotation angle of the rotor according to the comparison between the feedback value and the target value. The accuracy of servo motor depends on the accuracy of encoder (number of lines).

08/20/2020

Precautions on how to prevent freezing in winter chillers

As the temperature drops, winter is approaching. Last year, many customers’chillers experienced freezing failures. The editor of okmarts.com reminds everyone to do a good job of antifreeze work.

08/20/2020

Understand the knowledge of quick-freezing cold storage to solve all the incurable diseases of quick-freezing cold storage

Quick-freezing cold storage refers to a method in which food quickly passes through its largest ice crystal formation area and freezes quickly when the average temperature reaches -18°C. The temperature of quick-freezer is usually -15℃～-35℃.

06/14/2020

refrigeration compressorIndustry prospects

The type, application, geographic location and end-user industry of refrigeration compressor products are the main market areas in this study.

06/04/2025

Appraisal and Test Method for Water Volume of FRP Cooling Tower

To control water resources, save scarce resources, and achieve full utilization of resources, FRP cooling towers have been widely used. It has corrosion resistance, high strength, light weight,