Watch the product water flowmeter during the next test. If the product flow starts to exceed
75 gpm, stop the test and open the system pressure control valve. The ROWPU is making
too much water to finish testing of the high pressure switch. Bypass test until next
Step (2) applies only when operating on salt water. If operating on brackish or fresh water,
proceed to step (3).
Slowly close the system pressure control valve while watching the Reverse Osmosis pressure gage. The ROWPU should
shutdown at 930-960 psig.
Slowly close the cartridge filter block valve while watching the cartridge filter differential pressure gage. The cartridge filter
plugged light and alarm should come on when the difference between the two needles is 13-18 psig.
Slowly close the feed control valve while watching the media filter differential gage. The media filter plugged light and
alarm should come on when the difference between the two needles is 22-28 psig.
Slowly close the cartridge filter block valve while watching the red needle on the cartridge filter inlet/outlet pressure gage.
The booster pump and high pressure pump should shutdown at 4-8 psig.
Change 12 2-86.1/(2-86.2 blank)