Refrigerant recovery and Evacuation
If testing shows there is a lack of refrigerant leakage in the system. Leaks should be repaired before the refrigerant is added. Sealed unit needs refrigerant, if there is a partially Matt evaporator, low head pressure, low pressure on the low side, leakage, and/or if the device is too often.
One or more of these conditions can specify the required refrigerant charge. Remember that the pressure to move the refrigerant from the cylinder into the system. Cylinder under high pressure, under low pressure.
Hie use the following procedure to add refrigerant:
- Evacuate the system.
- Connect the refrigerant cylinder charging of the reservoir. Free only with the correct refrigerant vapor.
- The refrigerant cylinder can be heated with warm water or electric heater paste. The temperature should not exceed 120F (49C). Never use an open flame to heat.
- Install the pressure sensors, valves, as described and explained.
Connection of service lines should be clean and free air (which carries moisture).
Clean lines by flushing the refrigerant through them before charging.
When the charging unit, which is already partially charged, add a small amount of refrigerant vapors. The unit should then be allowed to cycle. Proper charge is indicated the best frost formation on the evaporator. When the frost begins to come down on the suction line, clear little refrigerant. Then the system will correct charge.
If the system was evacuated first, it can be removed by replacing the evacuation pump refrigerant cylinder. You can use the valves to close the pump, and then open a connection to the cylinder.
If your system was not evacuated, clean the two service lines and diverse. This is done by loosening the service line piercing valve. Then open the left comb. When the cylinder, valve opens, refrigerant vapor will purify the air, moisture and dirt from the two lines and the collector. Tighten the service line piercing valve...
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Industrial