The most comprehensive central air conditioning maintenance method

The most comprehensive central air conditioning maintenance method

The service life of the central air conditioner is generally 10 years, and it is about 15 years under the correct maintenance. Regular maintenance can reduce the electricity bill. The air conditioner is cleaned twice a year. It is best to clean it once a year before use in winter and summer. For use In places with a relatively high rate (such as restaurants, factories, etc.), it is necessary to increase the number of air-conditioning maintenance according to the usage, which can ensure the effect of air-conditioning, reduce operating costs, and extend the life of the equipment.

　　 According to the project situation and user wishes, generally there are the following cooperation modes:

　　 1. Single maintenance.

　　 It seems that it is mainly aimed at small projects such as households. After the two parties have agreed, they can go directly to the door for service. There is no need to sign a special contract for this model, only one agreement is agreed upon, and both parties have signed it for record.

　　2, half-pack mode.

　　Suitable for medium-sized and above projects or customers with long-term regular maintenance needs. This model is generally based on the annual contract to sign the contract, during the contract period, the service unit provides professional manual services and basic materials (such as detergent, etc.) according to the agreement. If repairs and repairs are involved, the corresponding material and component costs need to be quoted and negotiated.

　　3, all-inclusive mode.

　　 is a nanny service. The two parties sign a service contract on an annual basis, during which any problems with the user’s air conditioning system will be borne by the service unit. This mode is suitable for units with a large number of air conditioners and frequent minor faults.

　　 4. Equipment renovation and renewal.

　　 For systems that often fail, the maintenance costs are high and the problem may be unforeseen to completely solve the problem; the project of redecorating a certain area of ​​the large air-conditioning system is more suitable.

　　 5. System energy saving transformation.

　　 The user's air-conditioning system has high electricity costs and needs energy-saving renovation. After detailed investigation, the renovation plan can be proposed and ROI analysis provided to the owner to determine whether to implement energy-saving renovation. Choose the corresponding cooperation method according to your project situation.

　　Currently, users have some misunderstandings about air conditioning maintenance:

　　 Misunderstanding 1. The air conditioner is still within the warranty period, the installation unit will be responsible, and there is no need for maintenance.

　　Warranty and maintenance are two different concepts. The warranty period means that the air conditioner can be repaired for free when the air conditioner fails, but for the dirty fins, high power consumption, whether the air conditioner has peculiar smell, whether the insulation has been aging and cracked, whether the actual effect is good (as long as the return air temperature is measured Within the scope of the standard) is not responsible.

　　 Misunderstanding 2. Maintenance is cleaning and cleaning, everyone knows it.

　　System cleaning is an important part of maintenance, including three parts:

　　 1. The casing and exposed parts of the air conditioner body, parts that are easily contaminated;

　　2. Filter cleaning, a place commonly cleaned in general households;

　　3, the condenser and evaporator, and the drain pan are the core components of z* for air conditioning cleaning.

　　 Non-professional units just clean the air conditioner casing and filter, but often ignore the condensate pan. Secondly, the more important part of maintenance is to test the system, including the detection and judgment of the machine's operating voltage and current, the compressor suction and discharge temperature, and predict unstable conditions during operation to avoid major failures. It also includes a secondary inspection of the system design and installation, changes and amendments to the system, and recommendations for use, which are more important for the long-term stable operation of the system. This item cannot be done by professional units not trained by the manufacturer.

　　 For water system air-conditioning: more professional units are required;

　　 Finishing and repairing mainly include the appearance of the machine, the reinforcement of the firmware, the repair of pipe insulation, the line finishing or replacement, the cleaning of the electrical box, the rust removal and rust prevention, the replacement of various instruments, the addition of lubricating oil, the inspection and replacement of the pulley, etc.

　　 This requires professional inspections, professional tools and professional skills, and technical personnel who are not in the industry are not competent;

　　 Preventive inspection is an important part of central air conditioning maintenance.

　　Central air conditioners are mainly installed inside the ceiling and dedicated air conditioners. Once a major failure occurs, the entire system cannot be used.

　　 There are many factors that lead to major failures, including insufficient design considerations, irregular installation, unreasonable use, maintenance sequelae, no maintenance or incomplete maintenance, etc.

　　 Preventive work generally includes

　　 System inspection, troubleshooting, repair (maintenance, overhaul, transformation, etc.) and suggestions.

　　 System check is to transfer the external machine to the computer through a special interface. After the machine runs smoothly, all the parameters of the machine operation are obtained through the proprietary software, and these parameters are compared with the normal operating value to find the abnormality.

　　Troubleshooting is to judge the possible problems based on the abnormal trend shown by the check results, and then check and confirm one by one. Including re-examination of the initial design of the system and engineering installation.

Repair includes maintenance of the unit, system overhaul and necessary transformation, including recommendations for the use of the unit, to ensure that the system can operate smoothly in the long-term. This requires maintenance units not only to have cleaning capabilities, but also specific maintenance, design and The ability to install.

　　Overhaul refers to one of the preventive regular maintenance services. Overhaul involves the disassembly and overhaul of abnormal parts of the equipment. The loss of air conditioning equipment is detected, and improvement plans are provided, and the original parts are replaced in time.

　　 For larger projects, the usual work steps are:

　　Inspect the site, understand the current situation -> determine the work content -> cleaning, repair, inspection -> deliver the maintenance report.