This allows for accurate competitive bidding and assurance of ample refrigerant during startup. Following steps are to be taken for charging gas into the reefer plant: 1. A free oxygen atom now steels the oxygen from chloromonoxide molecule form an oxygen, molecule. Refrigerant affected to Ozone layer:  R11 (CClF ),  R12 (CCl2F2), R22 ( CHClF2), Refrigerant not affected to Ozone layer: NH3, R134A. Such fluid known as refrigerant. There is a charging port at the liquid receiver, is it ok to charge there after vacuuming the system? Then air is purged out through purging valve on condenser until the refrigerant. 3. May i add : Why are u need vacuming system.i am also direct connect refrigent cylinder. Basic Refrigeration and Charging Procedures covers system components, their functions, and applications. Refrigeration is a cooling process of taking away the heat from the compartment or area and giving it to the atmospheric air or any other cooling medium. Normally charging is made through the liquid charging valve at the high pressure side. Sight glas in reefer compressor is very low.how to recharge it using only a manual pump. It is fitted at the outlet of vegetable room to prevent under cooling of cargo. The amount of gas charged is noted with weighing scale and receiver’s sight glass. Ozone is gas; between 15 & 30 kilometer above the surface of earth. Now open charging bottle pipe valve and the charging point pipe valve located in the valve block. When compressor suction pressure just above zero, open the oil filling valve, inject the L.O, Then stop the compressor and close compressor discharge valve. Refrigerant charging is carried out with the compressor running to ensure even charging. as to prevent hot air going into cargo spaces. After remedy the fault, it must, If compressor stops due to a fault, the master solenoid valve will close to prevent flooding by. The main use of refrigeration plants on ships is to keep cargo and food provisions at low temperature to prevent them from spoiling. as there is equal pressure in both the lines? Open the valve A, slightly open the connection at C and purge the whole line by from 1 to 2 by crack opening the gas valve of the refrigerant charging bottle, try not to avoid any excess leak directly into the environment. The free chlorine atom attack the one ozone molecule. The same plant or a smaller unit can be used for maintaining the temperature of different provision rooms … Thanks in advance. NH3 – Wet litmus paper ( Red to Green ); Sulphur candles, which gives off  white dense smokes when contact with ammonia. Viele übersetzte Beispielsätze mit "refrigerant charging" – Deutsch-Englisch Wörterbuch und Suchmaschine für Millionen von Deutsch-Übersetzungen. Point 10 – Slowly open the compressor suction valve. Charging a Domestic Refrigerator by weight using both a cylinder with & without dip tube. Refrigeration and Air Conditioning systems onboard Ships- Vapour Compression systems Moving heat from a lower temperature to higher temperature requires work to be done , according to second law of thermodynamics and this work can be done in many ways in different systems. HVACR training book that covers Refrigerant Charging/Troubleshooting Practices, Step by Step Procedures for preparing an air conditioning and heat pump system for refrigerant, reading the manifold gauge set, measuring the refrigerants charge level, and troubleshooting problems with the system’s refrigerant … Cooling water kept running for some hour. As Stated, gas bottle is kept on weighing scale. Ensure that the vacuum pump valve is shut, 7. remainder of the ozone molecule formed into regular oxygen molecule. In reefer ships, the temperature of the perishable or temperature sensitive cargo such as food, chemical, or liquefied gas, is controlled by the refrigeration plant of the ship. The 10 digit ISBN is 1733817204 and the 13 digit ISBN is 9781733817202. How to identify various faults in refrigeration system, causes for the faults, and actions to be taken to troubleshoot those problems in refrigeration system are detailed in this article.