When part of the system needs service, empty fridge, wardrobe. Place the contents of one hand and cover them. Distribution of a drop cloth around and in accordance with this mechanism. Care should be taken when dismantling the internal and external parts of staff of the Cabinet. Chips or cracks enamel surface may require the replacement of the full panel. Not soils enamel finishes with oil or grease.
Tools and materials should be in a secure location to prevent injuries from functioning. Always arrange for good lighting. When removing any part of a system, follow these steps:
Restore all of the refrigerant from the plot, which must be open. The balance of pressure in parts just evacuated 0 psi (101.3 kPa).
Isolate the parts should be opened from the rest of the system.
Clean and dry joints can be opened.
All refrigerant holes should be immediately switched as soon as they are opened.
The refrigerant is removed first install manifold in the system.
Service valves properly adjusted and the compressor is running. Remove any part of the refrigerant can be done as follows: low pressure (less than atmospheric) is drawn on the part be dismantled. This is done to evaporation of the coolant. Then the pressure is aligned psig 0 (14.7 psi or 101.3 kPa). This is called balancing with atmospheric pressure.
Low pressure removes the refrigerant. Leveling or load prevents the air rushing into the mechanism, when the system is opened. This last step is very important. For the beginning of the recovery of refrigerant, close the inlet sendee valve part to be removed. Compressor start until the pressure gauge shows psig 0 (14.7 psi or 103.5 kPa) or a slight vacuum. Stop the compressor. Then open input service valve until the sensor reads zero. Close the inlet valve. Close the outlet valve's service. Clean and dry joints. Remove the part, Ahvays plug all refrigerant hole immediately after removing part. This is necessary in order to keep out dirt and moisture.
For example, suppose that an employee must remove the compressor, evaporator, or TEV. Refrigerant, then, is stored in a liquid receiver. Tyres liquid receiver to the service valve is closed. The compressor starts up until the liquid refrigerant is a liquid line, evaporator, or the suction line. The internal parts of the machine must be chemically clean as possible. Moisture can freeze at low temperatures, passages and can lead to acids and dissemination of sludge. Dirt (solids) hammer screens and forces you to wear regulating valves, valves of the compressor, and sometimes...
Industrial