It should include aspects such as daily maintenance, regular inspections, troubleshooting and safety precautions.
1. Daily maintenance of chillers
Keep clean: For air-cooled chillers, clean the filter regularly to avoid dust and dirt. For water-cooled chillers, check the cleanliness of the water regularly to avoid scale, sludge and foreign matter, including shell and tube condenser, evaporator and cooling tower water quality, forward and reverse rotation, etc. to ensure good heat dissipation.
Check the heat dissipation environment: The air-cooled chiller should be placed in a well-ventilated place. The heat dissipation outlet should not have a baffle or a ceiling lower than 1.5 meters, which is not conducive to heat dissipation. It is better to place it more than 0.8 meters away from the wall. If it is placed in a workshop with poor ventilation, the exhaust outlet should be equipped with an air duct to guide the hot air to the outdoors.
Check the refrigerant: Check the amount of refrigerant in the chiller regularly and add or replace it when necessary.
Check electrical components: Make sure electrical connections are secure and not loose or damaged.
Check water quality: If you use a water-cooled chiller, you need to check the water quality regularly to prevent scaling and corrosion.
2. Chiller regular inspection
Condenser and evaporator: Clean at least once a year to ensure heat exchange effect (do not use corrosive detergents and solvents for cleaning, otherwise it will easily cause corrosion and damage to the accessories).
Filter: Regularly replace the refrigerant drying filter to prevent clogging (requires professional operation).
Compressor: Check the compressor for any abnormal sounds or vibrations, and contact the manufacturer for maintenance if necessary.
Electrical system: Check the insulation and wiring of electrical components to ensure safety and reliability.
Safety devices: Check whether safety devices such as safety valves, pressure switches, and air switches are working properly.
3. troubleshooting
High-pressure protection:
Check whether the condenser is dirty or blocked, whether the fan is working properly, and whether the refrigerant is excessive.
Low-pressure protection:
Check whether the refrigerant is insufficient, whether the expansion valve is blocked, and whether the chilled water flow is too small.
Compressor failure:
Check the power supply, control circuit, refrigeration oil, etc. If necessary, ask a professional to repair it.
Other failures:
Refer to the manual for troubleshooting or contact a professional according to the specific situation.
4. Safety precautions:
Professional operation: The repair and maintenance of air-cooled chillers should be carried out by professionals.
Electrical safety: Before performing electrical maintenance, the power supply must be cut off to ensure safety.
Refrigerant safety: Refrigerant has a certain degree of toxicity and pressure. Pay attention to safety during operation to avoid leakage.
Equipment safety: When the equipment is running, it is forbidden to touch the running parts to avoid accidents.
Environmental requirements: Avoid using the chiller in harsh environments such as vibration, high temperature, and humidity.
5. Reference for replacement cycle of chiller consumables:
Compressor oil: You can choose to replace it every 1 to 2 years, depending on the usage and oil quality (no need to replace it if not necessary).
Refrigerant: Replace it every 5-10 years, depending on the actual situation and refrigerant type (no need to replace it if not necessary).
Other wearing parts: Replace regularly according to actual usage and manufacturer's recommendations.
6. Other suggestions:
Use environment: Avoid using the chiller in a vibrating, high temperature and humid environment.
Avoid frequent start and stop: Reducing the number of starts and stops of the compressor can extend its service life.
Regular maintenance: Regular maintenance and care are the key to ensure the normal operation of the chiller and extend its service life.
Industrial chiller installation diagram
Air-cooled chiller installation diagram
Schematic diagram of air-cooled shell and tube chiller
Water-cooled open chiller installation diagram
Water-cooled box chiller installation diagram
Installation diagram of air-cooled screw chiller
Installation diagram of water-cooled screw chiller