A) Install the adapter on the vacuum pump.
b) Connect the center hose of the gauge block to the vacuum pump adapter.
V) Open both gauge block valves and turn on the vacuum pump.
G) After at least 10 minutes, check that the low pressure gauge shows 100 kPa or more.
Note: if the pressure is low, close both gauge block valves and turn off the vacuum pump. Check the system for leaks and repair if necessary.
d) Close both gauge block valves and turn off the vacuum pump.
e) Leave the system in this state for at least 5 minutes, check that the instrument readings do not change.