MAINTENANCE, REPAIR

MAINTENANCE SERVICES, REFRIGERATION MILK

As an refrigeration company established in 2001, with more than 10 years of experience in refrigeration, in order to exist until today, Dai An Refrigeration Company has constantly listened to sincere comments from customers, we have constantly improved our service to make it better and better. For customers to be assured with the first time using air conditioning maintenance services at Dai An Refrigeration Company, we commit to our customers a reputable service – honesty.

The reason you should periodically maintain your air conditioner

• Increasing the longevity of the air conditioner: The air conditioner will be checked and cleaned regularly and will always have the best use status, operating extremely efficiently with the highest productivity.
• Energy saving: Cleaning the air conditioner will help clean dirt, reduce energy waste, and save energy.
• Save on machine warranty costs: At the same time, regular maintenance of the machine will help keep the air conditioner clean, replace old components, and have the best operating status. This helps to reduce some of the air conditioner maintenance costs.
• Help clean air: During the air purification process, there will be a lot of dirt and bacteria on the indoor unit. Regular air-conditioning maintenance helps to clean the air filter system, providing a cleaner airflow.

Dai An specializes in repairing air-conditioners, maintaining air-conditioners, and cleaning professional and reputable air-conditioners in Ho Chi Minh City. When you need to repair and maintain the air conditioner, please contact us immediately!

MAINTENANCE SERVICES, YOGURT CHILLER

Chiller refrigeration system is an industrial refrigeration system used in buildings, companies, factories … The 2-stage compressor system is cooled by water, so the maintenance of the chiller system is very focused by the system. This refrigeration system is very expensive and if it is not cleaned for a long time, it will lead to unfortunate damages. Dai An Trading and Technical Services Co Ltd would like to introduce to you professional, fast, neat cleaning and maintenance services for Chiller systems.

Chiller maintenance process

Maintenance bloc (compressor)

• If the bloc runs for 6 hours / day, it must be changed once for 6 months, and if the block runs for 8 hours or more in 1 day, change the oil once every 12 months (change the oil according to the manufacturer’s regulations).

Cold maintenance

• Use a special solution for maintenance
• When using the solution for maintenance, it should be noted: dilute the solution according to the allowed ratio, not too thick or dilute, when draining the solution out of the cold bulb, it is necessary to put water into the cold bulb many times to clean solution in the cold bulb (if the solution is not clean in the cold bulb, the machine will run for a while, the solution will corrode the indoor unit, causing perforation in the indoor unit)

Hot bulb maintenance

• Just like cold potting maintenance

Maintain the heat-generating outdoor unit by wind

• Use a dedicated washing machine to spray, wash the outdoor unit. (Note: do not use too high or too low pressure)
• fan maintenance, lubricating, checking ball

Hot and cold pump maintenance

• lubrication
• check marbles and silver
• check the suction, push of the pump
• Check the electrical cooler out of the shell

The problems that chiller system you are facing

• Industrial air-conditioning systems, chiller systems are reporting errors of high pressure, low pressure. The control system sometimes malfunctions, the compressor cannot start automatically, … causing you to worry and confuse how to handle it ???
• You waste more than 30% more electricity due to poor condenser cooling, prolonged cooling time for unknown reasons.
• You suffer from the treatment of the chiller water supply system, leading to scale, algae, … one of the leading causes of damage to the chiller, cooling tower.
• The flow of water supplied to the chiller is not stable, continuous error messages cost you thousands of dollars for each repair …
• And there are many other problems that make you headaches and tired

MAINTENANCE SERVICES, THERMAL TOWER

Cooling tower is a device responsible for cooling water to cool down equipment and machinery in factories. And during use, this device is also capable of generating unexpected problems. Therefore, users should regularly take measures to periodically check and maintain and maintain the tower. How should the maintenance of the Cooling Tower be maintained? In the following, we will suggest the standard procedure of the maintenance and maintenance steps for cooling tower systems. Hopefully, thanks to this knowledge, you will have methods to properly preserve and use the equipment, help the tower to cool the water and maintain the ability to operate stably, enduringly and for high working efficiency. Best.

Maintenance method and timing

Normally, the units using the Cooling Tower cooling tower each month users need to take measures to change the circulating water flow once, or when the water is cloudy. At the same time, businesses need to clean and scrub the base of hot and cold water tanks regularly to ensure that there are no dirt that can affect the cooling performance of the tower. The change of circulating water flow should be based on the concentration of the water volume to decide. In addition, if in winter, it is necessary to drain the circulating water out to avoid water freezing and break water pipes.

Cooling Tower Maintenance Process

First, you need to turn off the pump to start the maintenance cycle for the water cooler. The standard process includes the following tasks:

Remove scale in cooling towers

Because the cooling tower circulates open, after a period of use, there are many types of dirt, debris can enter the tower. So cooling tower water standards should be sources that do not contain impurities and dirt to avoid rusting and damage to the components in the cooling tower. Therefore, we need to periodically clean the cooling tower. The person in charge of cleaning and maintaining the industrial cooling tower needs to keep a certain amount of water in the tower to mix a moderate amount of chemicals enough to remove scale in the circulatory system. Cleaners should carefully dispose of chemicals and select chemicals of the right concentration to avoid harm to the tower and the health of the user. In addition, when pouring chemicals to clean the cooling tower, users need to strictly comply with labor safety regulations to avoid chemical burns. Then, we start to open the valves on the tower and pipes, turn on the water pump so that the chemical circulates to help dissolve the calcium, magnesium and dirt on the pipes.

Chemical discharge

After a period of running reagents, a technician drains detergent from the system. First, you need to use neutralizing chemicals to avoid damaging the environment. Then, the user needs to perform a pH test in water with purple litmus, if neutral (no chemicals) on the water cooling tower is satisfactory.

Clean the water distribution hoses

You need to disassemble the panels, the water dispenser to wash and clean all the algae and calcium deposits to keep the tower working well. After cleaning the piping system, the technician needs to re-install the water divider pipes to the tower as originally in accordance with the original technique.

Check lubrication oil

Normally, after about 6 months of continuous operation or when the Cooling Tower has been working for about 3000 hours, users need to change oil once for the equipment. In addition, you should also check the oil level in the tower every month for any loss, if the oil is low, you need to add more. When maintaining the equipment, we also need to check if the oil is condensing or freezing, if this happens, it is necessary to stop the machine and replace the oil immediately.

Check electrical system

The person in charge of the Cooling Tower maintenance should regularly check the electrical system supplying to the pump, the starter, the aptomat, the insulation of the fan motor, the pump, and if have.

Cleaning equipment, cover

You should also check the inlet impeller operation, clean the impellers, the protective nets, the tower body and the tower casing. At the same time, the user should maintain the operation of checking the screw, the reducer box to see if it is loose, if there is, perform tightening. After cleaning you need to check again, if the tower is clean, no moss and no dust is satisfactory.

System test run

After the maintenance of the cooling tower, businesses need to fill the system with water, open and adjust the water valves according to technical requirements and then run the test to see if the operation is stable or not, in case If there is a sound, vibration, it is necessary to adjust, tighten the screw, adjust the check chain, … accordingly. At the same time, if the water in and out temperature of the tower is stable, it is satisfactory.

Above is the knowledge that we need to know about the cooling tower maintenance process that we have synthesized. Hopefully, this information will help customers maintain their cooling equipment properly and safely. If you need any further answers, please contact hotline 028 35122445 to get our answer from Dai An staff.

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SERVICE MAINTENANCE, COMPRESSOR SYSTEM

In addition to providing screw compressors and specialized high-pressure air compressors such as: PET bottle blowing, nitrogen, oxygen up to 350bar, genuine spare parts and spare parts for air compressor systems, air dryer system, oxygen generator system, Nitrogen gas generation, compressed air filtration system, hydraulic with high quality. We also provide maintenance and maintenance services for air compressors and industrial compressors. With more than 15 years of experience in supplying air compressors to the national market, Dai An is committed to quality repair services to satisfy you. Correct the problem, optimize the repair cost, always take credit as important. In addition to repairing, we also advise you on how to properly operate technical procedures in order to improve the efficiency of air compressors.

An air compressor is an industrial machine that is used a lot and widely in today’s jobs. Compressors can be found everywhere and are used in a wide range of applications such as garages, vehicle repair shops, construction sites, mechanical works or large areas. more industrial in nature such as industrial pneumatic systems, automatic systems using pneumatic control …. Because of the demand for such a large market, many brands of compressors were born, such as Puma compressors, puny compressors, Pony compressors, Jucai, ABAC, Fusheng air compressor…. Among the brands there are brands of very good quality and also brands that are not durable but the price is cheaper. But regardless of the brand, it is necessary to have periodical and technical maintenance of the compressor to ensure the best and safest use of the machine. This article will introduce to customers the most technically correct air compressor maintenance process.

A. DAILY MAINTENANCE OF AIR COMPRESSORS.

Every day during use, it is necessary to regularly check the following problems to ensure your air compressor is not faulty while operating or no problems are happening.
1. When running, check for vibration and abnormal noise.
2. Check and maintain the oil level in the center of the oil gauge.
3. Drain the bottom valve of the air tank for 4 or 8 hours each time depending on the humidity of the air. Because the principle of the air compressor is to suck air from the air and compress it into the tank, if there is a large amount of warmth in the air, the amount of dynamic water in the compressor will be large and need to drain the bottom valve of the compressed air tank to discharge water out. .

B. MAINTENANCE OF THE COMPRESSOR WEEKLY

Despite daily maintenance, if you are too busy to carry out daily maintenance of your compressor, you need to have a weekly compressor maintenance plan with the steps to take. down here.
1. Clean the air filter. Clogged filter will directly affect machine productivity and lead to overheating and reduced oil life.
2. Clean all exterior components of the machine. Make sure the cooling pipes at both ends of the compressor are clean. A dirty machine creates abnormally high temperatures and the oil is carbonized on internal valve components.
3. Check the safety valve for operation by pulling the ring or lever.

C. MAINTENANCE OF THE COMPRESSOR BY MONTH.

1. Check oil, replace if necessary.
2. Check the air system for leaks. Check the exhaust valves and valve wire connecting the pistons and from the top of the compressor to the gas tank for punctures or punctures or leaks. This will cause loss of compressed air during work.
3. Check the belt tension, increase if necessary. If the belt is too tight, adjust the compression head or move it further or replace with a new one.

D. MAINTENANCE OF AIR COMPRESSORS

1. Change oil once every 3 months.
2. Check the valves. Clean soot from valves and locomotives.
3. Check and tighten all bolts, nuts,… if necessary.
4. Check the idle mode of the machine.

Notice the following issues:

1. Use SAE 20 type lubricant in winter, SAE 30 in summer. If using the oil properly, the speed (rpm) of the machine will be achieved as desired, within the speed limit.
2. Maintain the oil level at all times between the limit and lower limit of the oil gauge.
3. Before changing oil, stop the machine for 15 – 20 minutes.
4. Do not pour oil above the upper limit and do not operate the machine when the oil is below the lower limit.
5. Change oil to the first 100 working hours and 1000 hours for the next time or according to regulations. Can be changed earlier than usual in poor ventilation and humidity.

Air dryer equipment of compressed air system