What are the main maintenance items of central air conditioning maintenance? 1. Central air conditioning maintenance classification 1, patrol maintenance: 1). According to the equipment operation and customer demand, carry out various routine inspections in a planned way. 2) Provide on-site guidance to the owner's operators and explain the practical technologies involved in the operation and maintenance of the unit. 3) Provide various necessary value-added services. 4) Provide professional advice and improvement scheme for the problems existing in the operation of the main engine and auxiliary equipment. 2. Preventive maintenance: 1), including the contents provided by patrol maintenance. 2) Carry out necessary preventive maintenance according to the manufacturer's suggestion. 3) Preventive maintenance includes cleaning the copper tube of the heat exchanger, analyzing and replacing the refrigerating machine oil, oil filter element and drying filter. 3. Comprehensive maintenance: 1), the most comprehensive and thorough maintenance scheme, including all routine inspections, value-added services and emergency troubleshooting services. 2) In case of equipment failure, be responsible for all maintenance work and parts replacement. 4. Emergency maintenance: We provide emergency maintenance services for customers all day according to their needs. Developed service network and high-quality service personnel ensure rapid troubleshooting and shortest downtime. 5. Analysis of refrigeration oil: The quality of lubricating oil can fully reflect the running state and trend of the internal machinery of the compressor, and the metal content, humidity and acidity of lubricating oil are all key indicators that may lead to major equipment failures. The professional oil analysis we provide can provide you with improvement suggestions at critical moments, eliminate major fault hidden dangers of the unit in advance, avoid unexpected downtime and high maintenance costs, and protect your investment. Second, the central air conditioning system maintenance content 1, air conditioning host part; (1), check whether the high pressure and low pressure of the refrigerant in the refrigeration system of the air conditioner host are normal. 2, check whether there is any leakage of refrigerant in the refrigeration system of air conditioning host; Whether it is necessary to replenish refrigerant. (3), check whether the compressor running current is normal. (4), check whether the compressor running sound is normal. 5], check whether the working voltage of compressor is normal. [6], check the compressor oil level, color is normal. Once, check whether the compressor oil pressure and oil temperature are normal. Being, check the air conditioning host phase sequence protector is normal, there is no missing phase. Levies, check whether the terminals of the air conditioning host are loose. ⑽ Check whether the water flow protection switch is normal. ⑾, check the computer board, temperature probe resistance is normal; ⑿, check whether the air switch of air conditioning host is normal; Whether AC contactor and thermal protector are in good condition. 2. Check the air system: ① Check whether the air volume of the fan coil unit is normal. (2), check whether the fan coil unit return air filter dust. (3), check whether the air temperature is normal. 3. Inspection of water system: ① Check the water quality of chilled water and whether it is necessary to change water. (2), check the impurities on the filter in the chilled water system, and clean the filter. (3), check whether there is air in the water system, whether it is necessary to exhaust. (4), check the backwater, water temperature is normal. ⑤ Check whether the sound and current of the water pump are normal. ⑥ Check whether the valve is flexible to open, and whether there is rust and leakage. ⑦ Check the insulation system for cracks, damage and water leakage. Third, the central air conditioning system maintenance regular return visit ①. Ask the engineers whether the equipment and systems are in good condition recently. (2), check the operation records of equipment and systems; Judge whether there is a fault. Iv. Maintenance contents of central air conditioner 1, normal operation and maintenance 1) Check the oil pressure and oil quantity of compressor refrigeration oil. 2) Leak detection (refrigerant) of the system shall be handled in time after discovery. 3) Check for abnormal sound, vibration and high temperature. 4) Check the temperature and pressure of condenser and cooler. 5) Check whether all valves are normal. 6) Check the temperature and pressure of water inlet and outlet of water chiller. 7) Check the terminals on the main circuit and press them tightly. 8) Check the electrical control part. 9) Check the lubrication system of the unit. ; 10) Check the working state of each instrument and controller. 1 1) Keep the equipment clean. 2. Maintenance after annual shutdown 1) Check and clean the drying filter, and the desiccant should be dried or replaced after absorbing moisture. 2) Check the setting value of safety protection device of refrigeration equipment. 3) Check the oil pressure and oil quantity of the compressor refrigeration oil, and replace and supplement the refrigeration oil if necessary. 4) Check the insulation of the compressor motor. 5) Check and tighten the wire contacts on the circuit. 6) Check the electrical control part. 3. After the overhaul (1), check the air processor and fan coil unit. 2), air processor, fan coil maintenance, refueling. 3) Check and adjust the belt, clean the surface cooler and clean the filter. 4), cleaning pipes, decontamination. 5) Cleaning and dust removal of air processor. 4, water system maintenance work content 1), chilled water pump inspection, refueling. 2), motor, electrical insulation detection, refueling, seal inspection and replacement. 3) Valves, filters, check valves, pressure gauges and thermometers in key parts of water system. Inspection, replacement and repair of thermal insulation. Maintenance methods of central air conditioning The contracting methods of central air conditioning maintenance are divided into three ways: big package, medium package and small package. 1, the big package is to sign the contract once every three to five years. The contract includes the replacement cost of all components of the air conditioning system, labor cost for maintenance and daily operation management, daily maintenance and inspection cost, routine comprehensive inspection cost twice a month, system cleaning and oil change cost, etc. All problems caused by equipment and systems are within the scope of maintenance. Its characteristics are: high contracting cost, high risk, high profit, large number of personnel, and the need for a certain amount of spare parts inventory. Therefore, in order to balance the failure rate and reduce the risk, the contract is generally more than two years. 2. the contract between zhongbao and zhongbao will last for more than two years. Compared with the big package, it only reduces the management expenses of daily operators (that is, it covers all maintenance, materials and labor expenses, excluding operation and management expenses). Its characteristics are: high contracting cost, high risk, high profit, large number of personnel, and the need for a certain amount of spare parts inventory. Therefore, in order to balance the failure rate and reduce the risk, the contract is generally more than two years. 3) Small package only refers to the labor cost of maintenance, excluding any material cost of unit maintenance. When the unit breaks down and needs maintenance or routine maintenance, the material supply contract is re-signed with Party A, or Party A provides materials, and the maintenance fee is free. Its characteristics are: low contracting cost, low risk, low profit, few personnel, no need for spare parts, and generally sign a contract once a year. Air-conditioning users have reached an agreement with us on daily operation, overhaul and maintenance, emergency maintenance and seasonal maintenance of air-conditioning and entrusted us to complete all or part of the above work. Due to the different needs of equipment and customers, it can be divided into: full-time type: we send technicians to stay with customers for a long time to complete the daily operation, overhaul and maintenance, emergency maintenance and seasonal maintenance of refrigeration and air-conditioning equipment. Regular type: the customer operates the equipment by himself, and we send technicians to the customer for maintenance, seasonal maintenance and emergency maintenance at regular intervals (once a week or once a month).

What are the maintenance items of central air conditioning, including cleaning the filters of internal and external machines?

Refrigerant detection.

Check the compressor and so on. . .

What items are included in the annual maintenance of Macquarie central air conditioning?

1, maintenance in normal operation

1) Check the oil pressure and oil quantity of compressor refrigeration oil;

2) Leak detection (refrigerant) of the system, and handle the leakage in time;

3) Check for abnormal sound, vibration and high temperature;

4) Check the temperature and pressure of condenser and cooler;

5) Check whether all valves are normal;

6) Check the temperature and pressure of the inlet and outlet water of the water chiller;

7) Check the terminals on the main circuit and press them tightly;

8) Check the electrical control part;

9) Check the lubrication system of the unit;

10) check the working state of each instrument and controller;

1 1) Keep the equipment in a clean state;

For more information, please consult Koimel.

What are the main maintenance items of central air conditioning maintenance?

A, central air conditioning maintenance classification 1, patrol maintenance; 2. Preventive maintenance; 3. Comprehensive maintenance; 4. Emergency maintenance; 5. Analysis of refrigeration oil:

Second, the central air conditioning system maintenance content 1, air conditioning host part; 2. Inspection of wind system; 3. Inspection of water system;

Third, the central air conditioning system maintenance visits regularly: ① Ask the engineers whether the equipment and system are running well in the near future. (2), check the operation records of equipment and systems; Judge whether there is a fault.

Four. Central air conditioning maintenance content: 1. Maintenance in normal operation; 2. Annual maintenance after downtime; 3. End of maintenance; 4. Water system maintenance;

Shanghai Huichi (Huichi-China)

Does the central air conditioner need to be repaired by phone?

Which material is more suitable for installing central air conditioning? What does central air conditioning maintenance include? Central air conditioning maintenance includes many contents, such as overhaul, cleaning and maintenance. Hongda decorative board is very suitable for installing central air conditioning, which can reduce the trouble of secondary ceiling and can be used by families with various decoration styles.

What does the after-sales service of central air conditioning include? Haier Air Conditioning's after-sales service covers free design, machine sales, installation (free installation of small household air conditioners), relocation, maintenance (free within warranty and free outside warranty), maintenance, appraisal, engineering maintenance, replacement, trade-in, consultation, technical support and so on!

What aspects does the energy-saving research of central air conditioning include? Heat exchange loop

Energy efficiency ratio

compressor

Frequency conversion technology

Environmental action

lube oil

New refrigerant

Energy saving certification

Is it difficult to maintain and install the central air conditioner? It is not difficult to install. Installation mainly depends on design, so maintenance is not easy. If it can't be repaired in a few days, you must find an experienced installation and maintenance technician to start a company 1. Whether you can make money in your own business depends mainly on the price and estimate. I wish you success! If you have business in Fuzhou, you can call me at QQ534 174894.

What maintenance measures does the central air conditioner have? First of all, always check whether the contact between the electrical plug and the socket is good.

Second, the water system should pay attention to whether the pipe joint leaks.

Third, clean the filter regularly.

Fourth, clean the condenser and evaporator coil of the air conditioner regularly.

Five, do a comprehensive cleaning before long-term downtime.

I hope it helps you.