The Purpose and Steps of Industrial Chiller Maintenance

The Purpose and Steps of Industrial Chiller Maintenance

1. The purpose of maintenance

In addition to the correct and reasonable operation and adjustment of the piston refrigeration compressor of the industrial chiller, regular maintenance and repair work should be done to ensure that the chiller is in a good operating state. Usually the normal operation of the piston refrigeration compressor mainly depends on the following factors:

(1) During normal operation, the lubrication system of the refrigeration compressor should be clear, and the oil pressure, oil pressure, oil surface and oil quality basin should meet the regulations. The changes in parameters such as the suction and discharge pressures and pressures of refrigeration compressors should meet the requirements of normal working conditions.

(2) Installation, repair and maintenance work should ensure that the assembly time, geometric accuracy, wear degree of parts and manufacturing quality of each operating part of the refrigeration compressor meet the specified technical requirements, so that the refrigeration compressor has good performance. Gas transmission performance.

From the above factors of the chiller, operation and maintenance should be organically combined. Problems that cannot be solved by operation adjustment during machine operation should be solved by maintenance after shutdown. The purpose of overhaul is to disassemble, clean and inspect the parts of the machine. Check the wear or damage of the parts, and restore the geometric shape, size and good operating performance of the parts by repairing or replacing the parts, so as to ensure the compressor. normal operation and prolong the service life of the machine.

There are two types of machine maintenance, namely planned maintenance and accident maintenance. Planned maintenance is divided into major, medium and minor repairs according to the length of the planned execution time. Accident maintenance is timely maintenance when an accident occurs.

2. Contents of maintenance

The maintenance content during overhaul includes the content of medium repair and minor repair, while the medium repair includes the content of minor repair.

(2) Preparatory work before maintenance

1. Personnel preparation

In order to cultivate the sense of responsibility and technical skills of refrigeration operators, minor repairs to refrigeration compressors are generally completed by refrigeration maintenance workers and operators. The maintenance team leader is responsible for the medium repair, and organizes refrigeration maintenance workers to carry out maintenance. When the machine is overhauled, multi-work cooperation is required, and the leader of the unit should be in charge. Professional and technical personnel should participate in the reasonable organization and deployment of maintenance operators, and implement division of labor so that the maintenance of the machine can be carried out in an orderly manner.

2 Preparation of consumable parts and maintenance materials

Various wearing parts of refrigerators and other machines should be prepared, such as valve plates, valve springs, piston rings, connecting rod bolts, small head bushes, piston pins, main bearings, shaft seal rings, rubber seals, Gaskets, packings, pistons and cylinder liners, etc.

Prepare all kinds of auxiliary materials needed for overhaul, such as gauze, gasoline, kerosene, refrigeration oil, oil pan, fine sandpaper, abrasive paper, and oil stone. Gasoline, kerosene and other suspects used for cleaning machine parts should be stored in a safe place, and it is forbidden to get close to open flames and high-temperature objects to prevent fires.

3. Preparation for maintenance workers

Various maintenance tools and equipment required for maintenance should be prepared, such as ordinary fitter tools such as hanging bolts, socket wrenches, adjustable wrenches, hacksaws, pliers, hammers, screwdrivers and pipe wrench. In addition, side surplus instruments such as feeler gauges, vernier calipers, outer diameter gauges, dial indicators, inner diameter It gauges, calipers, and frame level gauges and tools should be prepared.

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