In the event of a leak, wear safety goggles.
Escaping refrigerant can cause severe
injuries to eyes. In contact with a flame,
R-134a refrigerant gives off a toxic gas.
2. Use an approved recovery / charging unit
to evacuate the system.
3. Close the high and low manual valves of
the meter valve first, connect the pipeline,
and pay attention to the connection
method of high pressure pipe and low
pressure pipe.
4. Slowly open the low-pressure manual
valve and slowly drain the refrigerant. A
small amount of refrigerant flowing out of
the refrigerant should be collected by an oil
collector.
5. When the pressure of the low-pressure
gauge drops to 345kpa, slowly open the
high-pressure manual valve, and pay
attention not to open too much. If there is
more refrigerant oil flowing out at this time,
it means that the discharge speed is too fast,
and the high and low pressure manual
valves should be adjusted down.
6. When the pressure gauge drops to 0, it
means that the discharge is finished. At this
time, the valve on the gauge valve should
be closed.
7. Measure the collected frozen lubricating
oil. If the oil quantity exceeds 15g, add the
same amount of new frozen lubricating oil.
Note Do not mix different brands of oil.
NOTE: The reclaimer unit, has a complete
step by step set of instructions to follow for
reclimation and recharging of the A/C
system. A trained technician should follow
these instructions as they may very slightly
depending on the model and brand of
reclaimer used.
Leak detection of the system
Connect the hose to the high and low
pressure interfaces correctly, connect the
maintenance hose to the pressure
equipment, open the high and low pressure
valves, and fill the system with dry nitrogen
(or dry compressed air) with the pressure of
about 1.8MPa. Then stop inflation, close the
high and low pressure valve valves, and coat
the joints of the system with soap water for
leakage detection. After holding for 20
minutes, the pressure did not change
significantly.
Vacuum system
Connect the hose, connect the maintenance
connector to the vacuum pump, open the
high and low pressure valves, maintenance
hose valve and start the vacuum pump. The
vacuum time should not be less than 20
minutes. If the automatic filling machine is
used, the vacuum degree should reach
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