User's Guide

Recommendation
The gauge can be used vertically using the hook on the back.
(Do not use the device on the floor.)
We recommend a vacuum pump with a backflow prevention function.
The oil in the vacuum pump is changed periodically.
Keep the refrigerant hose clean and check
frequently to see if the joints of the hose are loose.
Precautions for vacuum work
The vacuum sensor built into this device may malfunction
if it is frequently exposed to oil and foreign substances.
When working, please pay attention to the following points.
Lock the vacuum lock valve located on the right side of the product
and operate the vacuum pump.
(Prevent foreign substances from entering the vacuum sensor)
Lock the vacuum locking valve on the right side of the instrument
after completing the vacuum operation.
When the target value is reached, start the vacuum test.
Power off the vacuum pump.
Remove any foreign substances from the pipe while locking the vacuum
lock valve for 1/3 or 1/2 of the average vacuum pump operation time,
and open the vacuum lock valve to check the vacuum level.
※Emergency measures when the
vacuum sensor is contaminated with oil※
Check if the vacuum value of the device is displayed properly.
If the oil does not drain sufficiently,
increase the time for step 3 and repeat.
Run the vacuum pump for about 2~3 minutes to remove the oil inside.
Open the black vacuum lock valve located
on the right side of the instrument.
Connect the vacuum pump to the left (or right) of the t-type connector.
USER GUIDE
Please read the instructions before using this product
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