3. Turn “Zero Set” knob counter clockwise until it stops, then turn knob clockwise 3 full turns. This will place the adjustment knob in the middle of its travel range. Remove fill plug at top of manometer and slowly fill with red fluid. You will not need entire bottle. Stop filling as soon as red fluid enters clear tube at bottom of manometer. Turn “Zero Set” adjustment knob to set red fluid on 0 mark. If gauge overfilled, remove excess fluid by inserting a pipe cleaner through fill port to blot up excess oil. Once red fluid is set on zero, replace fill cap.
Complete booth assembly and then perform steps 4-6 to set manometer.
IMPORTANT: All filters in booth must be installed and new to get an accurate baseline.
4. Turn on exhaust fan. If exhaust fan is connected to a VFD to control speed of fan, make sure it is set to run at full speed. Red fluid should move up scale and settle at a number. Number will be different from booth to booth, but that does not matter, this is just a baseline setting. 5. Wherever the red fluid stops is where you will place the green arrow. In this example, the red fluid stopped at .25 inches of water column. So because we know our filters are rated for .5 inches of water column, and we know that with clean filters the fan is drawing .25 inches of water column, we simply add the two numbers together to tell us where the filters will pack out.
.25 inches of water + .5 inches of water = .75 inches of water total
Made with FlippingBook - professional solution for displaying marketing and sales documents online