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Preparation and installation procedures for starting up a screw chiller
Screw chiller is mainly an energy-saving machine that achieves refrigeration effect through steam compression or absorption circulation. The full name of a chiller is a cooling water circulation machine, also known as a refrigeration machine, cooling machine, freezer, chiller unit, ice water machine, small chiller, industrial chiller, refrigeration unit, low-temperature chiller, laser chiller. Due to its widespread use in various industries, there are countless aliases depending on the industry. Below, Oklon chiller manufacturer will introduce the start-up preparation and installation procedures for chillers.
Installation procedure for chiller
1. Please check if the machine is damaged during installation and choose a suitable location for installation and future maintenance.
2. The site for installing the unit must be a floor, installation pad or foundation with a levelness within 6-4mm and able to withstand the operating weight of the unit.
3. The unit should be placed in a room temperature of 4, 4-43, and 3 ℃, and there should be sufficient space around and above the unit for daily maintenance work.
4. At one end of the unit, there should be space for cleaning the condenser tube bundle, and door openings or other suitable openings can also be used.
5. Select the appropriate pipe diameter for the cooling system and chilled water system during maximum power operation of the unit, and connect them correctly.
6. For ordinary applications, the water flow velocity through the evaporator and condenser is allowed to be between 1, 0-3, and 6m/s.
7. Under any load conditions, the water flow rate should remain stable.
8. The design and installation of all chilled water and cooling water pipelines should be carried out according to conventional methods, and the chilled water pump should be located on the inlet pipe of the unit to ensure positive pressure and flow inside the unit. Vibration reduction pipes should be installed during piping to ensure appropriate elasticity, and to prevent the water in the evaporator from being discharged when the water pump stops.
9. The pipeline should have a sturdy support independent of the chiller unit to avoid stress on the components of the chiller unit. The installation of hangers should facilitate the alignment of pipelines.
10. To reduce noise and vibration, it is best to install vibration isolators on pipelines.
11. In order to use the chiller unit economically and effectively, it is recommended to have a water treatment expert analyze the water quality of the evaporator and condenser supply. Poor water quality can cause scale buildup, affect heat transfer, or produce corrosion, sedimentation, and organic matter growth, affecting the performance of the unit and increasing operating and maintenance costs.
12. Generally speaking, proper water treatment and regular cleaning of the tube bundle can maintain its good performance. If the existing water quality conditions cannot be improved by appropriate methods, it is necessary to consider allowing the tube bundle to have a large fouling coefficient or specifying specialized structural materials.
13. Please install a filter at the inlet of the water pipe and clean it regularly.
14. After the leak test is completed, all connecting ports must undergo rust prevention treatment.
15. For the convenience of daily maintenance work, users can adopt some (or all) of the following measures:
① Pressure gauges and shut-off valves with plugs can be installed on the inlet and outlet pipelines of cooling water and chilled water, as close as possible to the chiller unit;
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