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Precautions for the placement of walk-in cooler equipment and components
author: supermarket refrigerated showcase category: commercial refrigeration Views: 511Time: 2016-08-22
Precautions for placement of walk-in cooler equipment and components
Precautions for placement of equipment and components: ①Departments with walk-in cooler maintenance conditions, acetylene (or liquefied gas) cylinders and Oxygen cylinders should be placed separately at a distance of more than 3m;
②The refrigerant cylinders should be placed upright;
③The compressors should be placed upright, and each pipe port should be blocked to prevent dirt from entering. For the broken R600a compressor, the pipe port should be installed. It should also be blocked to prevent a small amount of R600a refrigerant dissolved in the compressor refrigerating oil from dispersing into the air, causing adverse consequences such as fire;
④ The dry filter can only be opened when it is used.
equipment use precautions (l) gas welding equipment acetylene cylinder pressure reducing valve set low pressure (ie trachea) pressure at 0.05MPa; oxygen cylinder pressure reducing valve set low pressure gauge at O.O1MPa ~ 0.02MPa. Open the welding first when igniting the flame; just open the acetylene valve on the welding torch, and then open the oxygen valve on the welding torch after ignition with a lighter. The opposite is true when the flame is turned off, that is, the oxygen valve on the torch is closed first, and then the acetylene valve is closed. Before welding the walk-in cooler refrigeration system, all the refrigerant in the system must be discharged. Do not aim the flame at the steel cylinder with gas, and do not use the flame to heat the acetylene cylinder and refrigerant cylinder.
(2) The valve of the refrigerant bottle should be closed by hand, including the empty bottle, to prevent air from entering. It is strictly forbidden to heat the refrigerant cylinder with torch flame, electric iron, etc., otherwise it will cause an explosion. Avoid collisions during transportation.
(3) Check the oil level before using the vacuum pump, and it cannot be lower than the oil level line.
(4) The pressure gauge side pipe port is connected to the refrigeration system, and the lower pipe port is connected to the maintenance equipment.
(5) The pipe cutter can only cut copper pipes, the knife edge should be perpendicular to the copper pipe, and the copper pipe itself should be straight and the knife edge depth should be progressive.
(6) Expander cup-shaped nozzle, copper tube nozzle reserved 10mm-15mm, expansion bell opening reserved 2mm,
(7) multimeter measurement resistance must be performed in the power-off condition. When measuring voltage and current, the human body cannot touch the device pins and wiring to avoid electric shock. Do not use electric block or current block to measure voltage, otherwise the walk-in cooler multimeter, especially the indicator multimeter may be burnt.
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