In the upper atmosphere Ultra Violet Ray breaks off Chlorine atom from the CFC molecule. The title of this book is Refrigerant Charging and Service Procedures for Air Conditioning and it was written by Craig Migliaccio. Control the valve opening slowly that no frost formed on the compressor suction. Refrigerant charging is carried out with the compressor running to ensure even charging. This will remove all the air inside the pipe. and procedures employed in order to carry out leak detection and other repair work on refrigeration systems in the field. And what are those extra connections found on the sides of the charging block? This report must describe efforts to identify leaks and repair the appliance. Refrigeration freon charging methods, regardless of the system size, the operating charge of the refrigerant determines how efficient and economically the system will run. refrigerant charging (Refrigerant Charge) The required amount of refrigerant in a system. Apart from handling web development projects, he also manages a logistics company and have a keen interest in modern logistic technologies . This will ensure there are no leakages in the system, 6. Point 9 – Open condenser outlet valve. If the plant is excessively charged, then you have to stop the system, collect the gas and remove it in to the collecting bottle. Stop the compressor and close the discharge valve. Now a day’s gas charging is preferred over liquid charging because it is more safe and simple. It is a condition of a compressor unit repeatedly running for a few second and then cutting. liquid refrigerant and possible compressor damage. Sight glas in reefer compressor is very low.how to recharge it using only a manual pump. All refrigerants using on board might be sub-divided into … Note* :Gas bottle is kept on weighing scale for measuring the amount of charged supplied to the system. Reduction in quantity of refrigerant may lead to troubles in the plant such as-. Symptoms of poor charging can range from higher energy costs to premature equipment failure. Each copy of the book includes a removable answer key for quick reference and use. 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 … Compressor Starts But Stops immediately. Now keep the system idle for 5 minutes to check there is no pressure drop. Normally charging is made through the liquid charging valve at the high pressure side. System can be charged after performing vacuum test. as there is equal pressure in both the lines? procedure A series of actions conducted in a certain order or manner An established or official way of doing something a particular course of action intended to achieve a result; "the procedure of obtaining a driver's license"; "it was a process of trial… As Stated, gas bottle is kept on weighing scale. The reefer plant is a combination of various machines such as compressor, valves, heat exchangers etc., which are connected to each other through pipes and joints. Such fluid known as refrigerant. Basic Refrigeration and Charging Procedures covers: refrigerant pressures, states and conditions, how they apply to the refrigeration system, vapor pressures, subcooling, superheat, saturation, latent heat, sensible heat, and the refrigeration cycle. Tip: Using an inline sight glass during push-pull recovery will allow you to determine when the liquid flow has stopped visually. … other process are now increasing the ozone breakdown to disturb the natural balance. How do you remove excess charge in a reefer plant? If you continue to use this site we will assume that you are happy with it. After remedy the fault, it must, If compressor stops due to a fault, the master solenoid valve will close to prevent flooding by. Following steps are to be taken for charging gas into the reefer plant: 1. Comfortable temperature range is about 22 °C and relative humidity (RH) about 60% (usually 40 ~ 70%). after creating vaccum in both the pipe lines of charge air cyl and charge pipe connection, HOW GAS FLOW WILL OCCUR? We use cookies to ensure that we give you the best experience on our website. Charging a Domestic Refrigerator by weight using both a cylinder with & without dip tube. The discharge of the vacuum pump is to be connected in the empty recovery bottle. The free chlorine atom attack the one ozone molecule. chlorine atom destroy 1 million of ozone molecule. Notice all the things that change as you are charging. Connect the L.O hand pump to L. O filling valve after air is purged out. **Learn To Do Troubleshooting And Maintenance Of Marine Electrical Systems**        Click Here To Know How, By Mohit | In: Refrigeration & AC | Last Updated on October 20, 2019. Detailed explanations of the refrigerant pressures and temperatures at each point in the refrigeration cycle will clarify questions the reader may have when troubleshooting a compression system. remainder of the ozone molecule formed into regular oxygen molecule. We use cookies to ensure that we give you the best experience on our website. Breaking it form to chloromonoxide. Connect gas bottle or charging cylinder, vacuum pump and charging point in the reefer system to the valve block. 2. Point 10 – Slowly open the compressor suction valve. June 30th,2016 . 2. Problem Calculating refrigerant charge by experience or rule-of-thumb can be inaccurate. Cooling water kept running for some hour. The main use of refrigeration plants on ships is to keep cargo and food provisions at low temperature to prevent them from spoiling. When the system is recharged, the compressor has to do additional work on the fresh refrigerant vapors to pump them in the system. Also can u discuss oil charging and removing methods. This will remove the trapped air from this pipe. Please visit: http://forums.marineinsight.com, How once know the vaccume process is completed, How do you know one kg gas charged to reefer, How can he know one kg gas to charge in system, Your email address will not be published. To charge the refrigerant until the bubbles disappears in the liquid sight glass and charging will correct the pressure gauge reading. Resolution A series of charts have been developed to assist in calculating system charge. It is fitted to shut down the compressor in the event of high pressure. There is a charging port at the liquid receiver, is it ok to charge there after vacuuming the system? This layer controls our climate & protects us from radiation. Now open the main valves in the charging cylinder and charging point of the reefer system, 8. out. Connect gas bottle or charging cylinder, vacuum pump and charging point in the reefer system to the valve block. @Jonathan Closing of suction and discharge valve is not necessary. Use the coupons before they're expired for the year 2021. First open the valve between vacuum pump and charging bottle located in the valve block without opening the main valve of the charging cylinder. Then air is purged out through purging valve on condenser until the refrigerant.