Step 2 - Install the Hose Barbs
Drill a hole in the booth wall just large enough for the plastic hose barb to fit through (approx. 13/32). Then
install the washer and nut on the back side. Be careful not to over tighten or you may strip the plastic threads.
Washer and Nut
Step 3 - Mount the Manometer
Mount the manometer on the wall of the booth and ensure it is level using the included bubble level at the
bottom of the manometer. If the manometer is not level, it will not be accurate.
Step 4 - Fill the Manometer
Turn the “Zero Set” knob counter clockwise until it stops, then turn the knob clockwise 3 full turns. This will
place the adjustment knob in the middle of its travel range. Remove the fill plug at the top of the manometer
and slowly fill with the red fluid. You will not need the entire bottle. Stop filling as soon as you can see the red
fluid enter the clear tube at the bottom of the manometer. Then use the “Zero Set” adjustment knob to get the
red fluid to sit on the 0 mark. If you overfill the gauge, remove the excess fluid by inserting a pipe cleaner through
the fill port to blot up excess oil. Once the red fluid is set on zero, replace the fill cap.
Inside Wall of
Booth
Plastic Hose Bart
Top Mounting
Hole
Bottom Mounting Hole
(Slotted to easily adjust level)
Bubble Level
13