100% web traffic for your web

Step 1
Register this Link 

Reuse of frigerant

Recovered refrigerant  may be reused in the same system from which it was removed or it may be removed from the site and processed for use in another system depending upon the reason for its removal and its condition, i.e the level and types of contaminants.

There are many potential hazards in recover of refrigerant are acids, moisture, high boling residues and other particulate matter. Even low levels of these contaminants can refrigrant should be checked before reuse.

Refrigerant from a unit with a burnt-out hermetic compressor is reusable providing it has been recovered with a recovery unit incorporating an oil separator and filters. To check the acid content of any reclaimed oil it is necessary to use a refrigeration-oil-test-kit. Usually it is only a matter of filling a test bottle with the oil to be tested and mixing it with the twst liquid inside If result shows purple: oil is safe. If liguid turns yellow this would show the oil is acidic-and refrigerant/oil should not be used in system. Such material should be sent for reclamation or destruction 

Liquid transfer

If the recovery unit does not have a built-in liquid pump or is otherwise not designed to handle liquid, then liquid can be removed from a system using two recovery cylinders and a  recovery unit. The recovery cylinders must have two ports and two valves one each for liqued and one each for vapour connections. Connect one cylinder liquid port directly to the refrigration system at a point where liquid refrigrant can be decanted. connect the same cylinder vapor port to the recovery unit inlet. Use the recovery unit to draw vapor from the cylinder refrigeration system in to the cylinder. Take care as this can happen quite quickly.
         The second cylinder is used to collet the refrigerant from the recovey unit as it draws it from the first cylinder. If the recovery unit has adequate onbord storage capacity this may not be necessary. once all the liquid refrigrant has been recovered from refrigeration system, the connection are be relocated and the remaining refrigerant recovered in vapor recovery mode. It may be found convenient to fit a liquid sight glass within the transfer line.

Recovery Technologies

Since a recovery unit will remove more fluorocarbon refrigerant from a than any other practicable method, their use should be regraded as the norm and the exception.
Contractors, engineers and equipment owners should ensure that recovery units are adequately available for use , in anticipation that they will be needed.
Their availability, sophistication, variation and demand are increasing and is resulting in their being more widely used.

As with vacuum pumps, recovery unit, will work much more efficiently if connection hoses are kept as short and as large in diameter as possible. A8/3" diameter hose should be the minimum size used and half inch is preferable.
However, not being able to get a recovery unit close to a system is not an acceptable excuse for not using one. If long hoses have to used all that will happen is recovery will take longer.

Recharge Oil Hermatic Compressor

To recharge with a measured amount of the oil. compressor must be removed from the system. and the oil must be drained out from the suction line stub by tilting the compressor. The exact amount of oil must be clear before recharging is stated. Check the instruction manual for correct charge.The avoid too much mixture of refrigerant in the oil and to avoid emission of refrigerant, an oil heater could be installed. After the compressor is reinstalled the system must then be evacuated by means of an access valve of the process tube before recharging with refrigerant and operating. Never use oil from bottles or drums which have been left open. (moisture)