Such inspections should take into account the effects of service life or continuous vibration
•
from sources such as compressors or fans.
6. Detection of flammable air conditioners
Do not use fire sources to locate or detect air conditioning water leaks.
•
Do not use a leak detection flame head (or any other detection device that uses an open
•
flame).
7. How to detect leaks
An electronic leak detector should be used to detect flammable air conditioners, but the
•
sensitivity value may not be sufficient or may need to be recalibrated.
Make sure the leak detector is not a source of fire and is suitable for the air condition er
•
being used.
The leak detector should be set to a percentage of the air conditioner LFL and should be
•
calibrated with the air conditioner used to confirm the correct gas percentage (up to 25%).
Liquids with leak detection properties are suitable for most pharmaceutical applications and
•
chlorine-containing laundry water should not be used as chlorine may interact with air
conditioning and corrode copper pipes.
If a leak is suspected, extinguish or extinguish the fire.
•
If an air conditioner leak that requires soldering of pipes is found, all air conditioning water
•
must be transferred or separated from the system (by closing various valves and storing in
a part of the system away from such leaks).
Nitrogen gas (OFN) is used to remove air from the system before and during the bonding
•
process.
8. Air conditioner water transfer
General procedures should be followed when opening the air conditioning circuit for repair
•
or for any other purpose
However, it is important to follow best practices because of flammability and flammability
•
Something to remember
•
The following procedures should be followed:
•
o Air conditioning
o Use inert gases to remove air from the loop
o Rinse
o Revent the air with an inert gas.
o Open the circuit by cutting or brazing
Air conditioning refills should be pumped using appropriate drainage cylinders.
•
OFN should be used to "clean" the system to ensure system safety.
•
This procedure may need to be repeated several times.
•
Do not use compressed air or oxygen for this operation .
•
Flushing is completed by destroying the vacuum in the system using OFN, increasin g the
•
vacuum to the pressure generated by the operation, then venting it into the atmosphere and
finally into the vacuum.
This process should be repeated several times until there is no air conditioning i n the
•
system.
When the last OFN is added, the system should be drained to atmospheric pressure in
•
order to be able to work.
This work is especially important when welding on pipes.
•
Ensure that the outlet of the vacuum pump is not near any fire source and can be ventilated.
•
9. Guidelines for refilling the air conditioner
In addition to general refueling practices, the following regulations should be followed:
•
o When using air conditioning filling equipment, ensure that different types of air
conditioning are free from contamination.
o Hoses or hoses should be as short as possible to minimize the amount of air fluid
contained in such hoses and hoses.
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