How to take out the ammonia refrigerant in the refrigeration system
Steps to take out the ammonia refrigerant:
First, prepare all the tools and emergency supplies, such as ammonia irrigation, a certain number of ammonia bottles, connecting pipes, fitter tools, gas masks, rubber gloves, first aid medicine, etc. Close the liquid supply valve of the condenser to the evaporator, start the ice machine to pump the ammonia from the low-pressure system to the condenser and the high-pressure reservoir. Place the ammonia bottle on the scale, and use a high-pressure rubber tube (pressure resistance above 3MPa) to connect the empty ammonia bottle to the ammonia discharge pipe of the ammonia refueling station. The connection should be firm. Slightly open the ammonia discharge valve on the ammonia refueling station, and check the tightness of the ammonia discharge pipe and joints. Open the pressure reducing valve on the ammonia refueling station to reduce the pressure of the ammonia tank or the ammonia bottle, then close the pressure reducing valve and open the ammonia release valve to discharge ammonia into the ammonia bottle or ammonia tank.
Secondly, the ammonia tank that has let off the ammonia is weighed. Normally, it should not exceed 60% of its capacity. When the required amount is added, close the ammonia cylinder valve and the liquid valve on the ammonia refueling station in time, open the pressure reducing valve on the ammonia refueling station, evacuate the liquid in the ammonia pipe, close the pressure reducing valve, and slowly remove the cylinder Connect the tube and replace it with a new bottle. When the ammonia tank reaches the quantity, first close the ammonia tank valve, open the pressure reducing valve on the ammonia refueling station, and after the ammonia liquid in the pipe is drained, close the pressure reducing valve and remove the connecting pipe. If the suction pressure of the refrigeration compressor is too low, the cold storage door can be opened to increase the temperature of the storage and the evaporation of ammonia. The suction pressure of the machine can be increased. The low pressure system can pump to 0.05MPa (gauge pressure). After stopping, if the pressure rises, it can be restarted to pump down. In order to facilitate the condensation of ammonia, the condensation pressure can be made higher, for example, it can be controlled between 1.3 to 1.4 MPa (gauge pressure).
Finally, when the liquid level of the high-pressure reservoir drops below 5%, the ammonia cannot enter the ammonia cylinder or the ammonia tank, and the pressure of the low-pressure system rises below 0MPa (gauge pressure), it can be regarded as the end of ammonia extraction. The remaining small amount of ammonia can be placed in a bucket with water or in a condenser pool.
Extract liquid ammonia from refrigeration compressor equipment, and implement safety first and reduce loss.
How to take out the ammonia refrigerant in the refrigeration system
Recent related posts
-
08/13/2020
How to take out the ammonia refrigerant in the refrigeration system
First, prepare all the tools and emergency supplies, such as ammonia irrigation, a certain number of ammonia bottles, connecting pipes, fitter tools, gas masks, rubber gloves, first aid medicine, etc.
-
08/13/2020
How to select the chiller and what should be paid attention to when using the evaporator
For customers who have used water chillers, the selection of water chillers is already familiar, and they are all aware of the various requirements. For customers who buy a chiller for the first time, they may not know too much about the size of the chillPﰨ2 䀀
-
08/13/2020
How to replace the lubricating oil and filter drier of the chiller
After the chiller is used for a long time, the lubricating oil will inevitably be contaminated or acidified. Therefore, we must pay attention to the change of oil quality during the operation of the unit.
-
08/13/2020
How to judge the chilled water flow of the chiller
Generally speaking, when buying a chiller, you will have questions. I don't know how to judge the chilled water flow rate of the chiller? From what aspects should the chiller water flow be considered? Today, the editor of okmarts.com will share with you fPﰨ2 䀀 湠癐
-
08/13/2020
How to install the cold storage air curtain How much do you know about these technologies
The function and technology of installing the air curtain above the cold storage door, we must first understand why the cold storage needs to install the air curtain. The air curtain prevents the convection of indoor and outdoor air,
-
08/13/2020
How to install large-scale cold storage refrigeration equipment
The cold storage is mainly used as a constant temperature storage air-conditioning equipment for food, dairy products, meat, aquatic products, etc. The cold storage is a kind of low-temperature cold storage and also a kind of refrigeration equipment.
-
08/13/2020
How to deal with the high pressure overload of the chiller
When the condenser heat dissipation is poor, the compressor efficiency is low and the operating current increases. When the high pressure rises to 19Kg/cm2, the compressor trips under the protection of the high pressure switch and the compressor stops runPﰨ2
-
08/13/2020
How to choose the internal machine for cold storage Choose air cooler or exhaust pipe
Most of the cold storages we make are divided into many types, such as high temperature storage, low temperature storage, ultra low temperature storage, etc. So how to choose the internal machine of the cold storage?
-
08/13/2020
How to apply the functions of cooling, heating, humidification, and dehumidification of computer room air conditioning
1. Uninterrupted operation and year-round refrigeration<br></br> The heat dissipation of the equipment in the computer room is a steady-state heat source, and it operates continuously throughout the year. This requires an uninterrupted air-conditioning gPﰨ2 䀀 湠癐
-
08/13/2020
How many of these problems have you encountered with cold storage equipment
The installation of refrigeration system equipment and refrigerant pipelines, even the overall design of the cold storage and the daily use of the cold storage, must be done in strict accordance with the specifications.
Customers frequently viewed
IWAYA DENKI Water Pump 25CJT0752
Panasonic Servo Motor MHMF022L1V2M
Honeywell Solenoid Valve VE4025B1045
ROTEN Mechanical Seal 8E5K-22-X
AirTac Solenoid Valve 4V230E-06-DC24
LEEMIN Filter HX-630-10
HONGFA Relay HF115F-024-1ZS3-(24V)
YI-SHING Vane Pump PV2R12-47-06-FR