The basic principles of operation are as follows:
– Due to lack of goods cabinets have stopped but the pressure still increases and the level depends on the tightness between the valves, it is better to monitor regularly and run gas discharge in cooler, to avoid dangerous situation of level pressure rising too high.
The duration of each running gas discharge depends on the quality of compressor and the valve clearance.
Running gas discharge when the freezer in OFF status is normal in operation. It is important to comply running gas discharge seriously to avoid increasing too high of the cooler pressure that may cause exploding inside the pipe.
– The freezer not running for a long time must be lowered so that the spacing between the trusses is minimized. Normally, between the trusses, there are three strips of rectangular section with the dimensions of 40 x 40mm supporting the two- ends and the middle of cooler to avoid the hammock phenomenon.
– Operation of freezer has two basic parts: the fluid level and the indoor unit. Boths can be controlled rightly by the controller outside the freezer.
Fluid level controlling is usually in auto mode by the float switch and electronic valves in the low pressure tank for fluid spills or by the fluid pumps for fluid from low pressure regulator tank.
Before putting products into the freezer, it is necessary to run the freezer in about 20 minutes to lower temperature down to the working temperature so that can shorten frozen time, and help to rise the value of frozen foods. It is also time to test run before the official operation.
After a 20-minute test running, the shelf surface become to snow on a thin layer, then open one side of door. Press the UP button or the lever to lift up to the maximum position, press the STOP button or the lever to the medial position so as to stop pumping oil to bring food (food) into easily. It’s not allowed to let snow fallen on the food tray. The faster you do that operation, the less cooling may be lost due to opening. After fulling the cabinet or out of stock, press the DOWN button or the lever to lower the truss.
Start running: When the goods are full, running normally cabinets along with running the compressor, and monitor the temperature of the cabinet every hour. If have to open door to filling water, it must be done quickly and similarly with filling foods. There is no need to open the door at all. The freezing time for each cabinet depends on many factors such as equipment system, operating technique, loading technique …
Take out: after products get requirement , let run gas discharge. Be sure to run gas discharge in the cooler before opening the cabinet door, lifting the bin to take out. It slowly lifted down from top to bottom, the speed of delivery should also be fast. The lifting method is the same as when taking foods into the cabinet.
Washing : After each cold sheet is covered with snow, so it is necessary to carry out the cooler, before snow discharge to ensure that the system has exhausted the gas, when the cold frame is lifted easy to lift, easy to wash the cabinet Cold water is sprayed directly onto the surface of the rig.
Controlling the cooling is plated by hydraulic hydraulic system that is independent on the refrigeration system.
Note: Each freezer should be for only one type of product, so that the mold’s height is uniform, the gap between them is evenly uniform,and the contact between the mold and the cooling unit is best.
