V F G - 7 5 E S t r o n g b o n d Va c u u m C l e a n e r
13
Thirdly, adjust the pressure.
As Fig. 4.10 shows, adjusting the screws and nut inside Part B with allen key and open
spanner. Firstly, keep the cylindrical screw in place firmly with allen key and adjust the
nut with the open spanner until it is tight so that the spring inside the valve is kept in a
firm status. At this time, the valve can be opened to release pressure only when the
vacuum reaches the highest negative pressure. After the adjustment, please assemble
them refer to step 1 and 2.
Note: the pressure relief valve will be adjusted accurately by the manufacturer.
Fig. 4.10 Step 3
