Tegevusluba

Routine leakage test maintenance procedure as follows:
Based on equipment's labeled gas quantity (measured in kg or Co2 metric ton equivalent), type of design (hermetic, semi-hermetic...) determine the time range between leak test and if it's necessary (eg. <5 m.ton co2). Also take in to account if a leak detector is present.

For devices requiring leak test:
First, visually inspect the equipment for signs of obvious leaks. If no visual indicators are present move to foam test of soldered joints, adapter connection, valve ports and so on. If that doesn't produce results, begin check with electronic leak detector (after making sure the detector is within calibration date).

If device has a UV additive mark, use a UV lighting torch/flashlight to visually inspect the systems for presence of illuminating uv dye leakage.

A device label must reflect several important characteristics of the machine and it's service personnel.

A clearly readable label must be placed near the service area or close to the user control part of the machine.

1. That the product contains refrigerant gas inside.
2. Device refrigerant (f-gas) type (R-number, or in absence, the chemical name) and charged quantity. Measured Kg and in Co2 metric ton equivalent and it's GWP value.
3. If the device is hermetically sealed or semi-hermetic.

For containers:

1.Refrigerant type, actual weight, Co2 metric ton equivalent,GWP value.
2.If the container has recycled or recovered gas then: batch number, type of gas: recovered or recycled, name and address.

I'm required to test and or calibrate my tools at least once a year or sooner if i feel like the device is out of tolerance. Mostly before i commence in any new project or activity, i make sure to test my devices against a known value of pressure or temperature to determine it's proper function. If i find out the device is heavily out if it's tolerance range i don't use the particular tool and send it of for proper calibration.
I periodically test my hoses for leakage, wear and tear. As well as making sure every connector has the proper o-ring present inside. For leak detectors, i make sure to have several spare sensing elements and inspect them periodically.

I will store newly purchased containers of refrigerant in a proper warehouse, equipped with a leak detection unit. Each container must be properly labeled, closed and checked, equipped with emergency pressure relief valve (if possible) and it's port capped of with a sealing cap (with an o-ring inside).
Containers which have been used for recovery will receive proper labels and stored for a small time frame until I've amassed enough quantity to deliver it to a proper disposing facility.

1st i make sure all my hoses and in proper shape and have o-rings present.
I prepare an empty refrigerant container and put it on the scales, deducting the tara weight. Then, i connect the container's liquid port to the recovery unit's discharge port. The recovery unit's inlet port i connect through a filter/strainer to the middle port of my manifold.

On my manifold, i connect the low pressure valve to the equipment about to be evacuated's low pressure port and respectively the high pressure valve to the equipment's high pressure port.

Then, i check to make sure the vapor valve on the container is closed and i open the liquid valve. I then put the recovery unit in to recovery mode and i open my manifold, then turn on the recovery unit. Then i start watching the weight on the scales. If it's approaching close to the container's maximum allowable weight then i turn of the recovery unit, close my manifold. Then i switch the recovery unit to "purge" and purge the hoses, after which i switch off the recovery unit, close the valve of the container and disconnect the filled container. Properly labeling it afterwards and setting it aside in a safe environment.