Compressor maintenance

You can go to the chemical machinery section and look for it. There are a lot of them. If not, you can search on the site.

8.1 Preparation work before test run 8.1.1 Before starting the car, check and confirm that there are no problems with the lubricating oil system, cooling water pipeline, and nitrogen filling system. The main motor and other single tests have been completed, and all problems affecting the test run have been rectified. Running normally ； 8.1.2 All safety interlocking and signaling devices, instruments, electronic controls, machinery and other parts have been inspected and confirmed to be correct. ； 8.1.3 Manually turn the car for 2-3 turns, check the operation of the compressor, and confirm that it is normal before signing the final confirmation of the test run. ； 8.2 Test run 8.2.1 Check and adjust again to confirm whether the lubricating oil system pressure and each lubrication point are smooth, and whether the cooling water system and other ancillary systems are working normally. ； 8.2.2 No-load trial operation: Instantaneously turn on and off the main motor, check whether the direction of rotation is correct, check the sound and vibration of each part, and deal with any abnormalities in time. If it is normal, no-load test operation can be carried out. After starting the operation for 30 minutes, check the current, sound, temperature, vibration and other conditions. The processing method is the same as before. If there is no abnormality, carry out a continuous test run for 4 hours, and make a record every 30 minutes. The following requirements should be met.: No abnormal sound during operation ； Lubricating oil system is working normally ； Bearing temperature rise does not exceed 60℃ ； The temperature at the packing gland shall not exceed 80℃ ； The temperature rise and current of the motor do not exceed the name brand regulations. ； Electrical instrumentation equipment is working normally ； The outer wall temperature of the mid-body slide does not exceed 60℃ ； 8.2.3 Air load test run The continuous time of air load test run shall not be less than 12 hours. The medium is air or nitrogen, and its operation should be closely monitored. ； The requirements for operating indicators are the same as those in the previous paragraph. ； 8.2.4 Compressor is tested at full load: Before operation, the non-media components of the intermediate system must be replaced to prevent accidents. ； 8.3 Acceptance After passing the test run, put into normal use, reach the intact standard, go through the acceptance procedures ； Acceptance technical information includes: A complete set of technical information and drawings from the manufacturer ； Pressure resistance and air tightness test records ； Project installation delivery documents ； Test drive records. 9. Safety measures 9.1. Carry out hazard identification and risk assessment for this construction, and formulate special control measures for major hazards assessed. 9.2. On-site operations must be issued with a qualified safety work ticket before proceeding. 9.3. Hot work must have a hot work ticket, and electricity bills must be issued for electricity use. 9.4. Personnel entering the site should wear labor protection neatly. 9.5. When working at heights, safety belts must be properly worn and tools, materials, sundries, etc. must not be thrown up or down. 9.6. If the beams, roofs and other components of the buildings around the unit have not been installed, but the unit equipment has been installed in advance, steel scaffolding should be used to set up a protective ceiling suitable for construction operations on the equipment to prevent surrounding installation objects from falling and damaging the equipment. 9.7. If the unit is installed before the stairs, platforms, railings, etc. on the cement foundation of the unit are erected, a circle of scaffolding should be erected around the cement foundation platform, with springboards and protective rails laid on top to facilitate construction and personnel safety protection.

Compressor maintenance mainly depends on the various auxiliary systems of the compressor, the parts of the body itself, the indispensable oil that needs to be refueled and the oil that needs to be cooled should be cooled in time, and whether there is any noise when the body is running. My personal opinion is not very comprehensive. I hope you can help.

Inspection and preparation work before start-up of piston chiller The inspection and preparation work before start-up of piston chiller are also divided into two situations: daily inspection and preparation before start-up and annual pre-start-up due to different work focus and content. 1. Daily inspection and preparation before start-up 1. Check the oil level and oil temperature of each compressor 2. Check the main power supply voltage and current 3. Start the chilled water pump and cooling water pump. After the circulation of the two water systems is established, adjust the opening of the inlet and outlet valves of the evaporator and condenser so that the inlet and outlet pressure difference of the two devices is around 0.05Mpa (0.5Kg/c㎡). 4. Check whether the set value of the chilled water supply temperature is appropriate. If not, it can be changed. 2. Inspections and preparations before annual start-up 1. Check whether the random fuses in the circuit are intact and measure the phase voltage of the main motor. The average unstable phase voltage should not exceed 2% of the rated voltage. ； 2. Check whether the rotation direction of the main motor is correct and whether the setting values ​​of each relay are within the range specified in the manual. ； 3. Check whether the rotation direction of the oil pump is normal and whether the oil pressure difference meets the requirements of the instruction manual. ； 4. Check whether the refrigerant in the refrigeration system reaches the specified liquid level requirements and whether there is any leakage. ； 5. The condenser, evaporator and related pipes that have been drained of water due to winter antifreeze must be drained of air again and filled with water. ； 6. Lubricate the leaf control connection device outside the guide vane adjustment device ； 7. Check the chilled water pump, cooling water pump and cooling tower ； 8. Check whether all valves in the unit and water system operate flexibly and are free of leaks or stuck. ； Whether the switch position of each valve meets the operating requirements of the system ； After completing the above inspections and preparations, proceed with the daily inspections and preparations before starting the machine. When all inspections and preparations are completed, close all isolation switches to enter the start-up operation stage of the chiller and its water system.