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INS TRUCTIONS MA NUAL
Proceed as follows:
“REFRIGERANT AVAILABLE” LED must light, if it is neces sary pres s the SEL key to s witch
the light to “REFRIGERANT AVA ILABLE” LED.
1. Pres s once the “°F” key in order to display the refrigerant tank temperature (in
Fahrenheit degree), press it a second time to display the temperature in Cels ius
degree)
2. Read the storage tank pres sure ofthe tank gauge
3. Find the temperature in the TEMP °F column for that tank then read the associated
PRE SSURE column in ps ig.
4. If the related TANK PRESSURE gauge (A4, fig.5) reads LOWER or EQUAL than the
nominal pres sure listed in the table for the respective tank temperature, IT IS NOT
NECESSARY to vent the non-condensable gases from the tank.
5. If the related TANK PRESSURE gauge (A4, fig.5) reads HIGHER than the nominal
press ure listed in the table for the respective tank temperature, you s hould vent the
non-condensable gases from the tank. This is accomplished by opening the air purge
valve as sho wn in fig ures 1,2 ,3, & 4.
6. Pres s the STOP key to exit the reading ofthe tank temperature
7. Slowlyopen the airpurge valve (r,fig.2) counterclockwise (turn ~20 degree)
8. Once opened the air purge valve r,(fig.2) check the tank press ure gauge and the value
shown bythedisplay.
9. Clos e the air purge valve when the tank pres sure comes down to the nominal
press ure listed in the table.
Fi
g
.13:Normal R-134° container
p
ressure chart
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