3-28. REPLACE RO ELEMENTS. This task covers:
Tools, see Appx C, Sec Ill, Ref Code (No):
Flat Tipped Screwdriver (51)
7/8 in. Socket (54)
Water drained from high pressure system.
Wrench, Hex Key 1/4 in. (59)
9/16 in. Open End Wrench (60)
Personnel Required: 2
3/8 in. Ratchet Wrench (61)
General Safety Instructions:
RO Element Pusher (Appx B, Sec Ill,
Ref Code No. 14)
Observe specific Warnings and Cautions in the text.
RO Elements (Appx E, Sec II, Item 36)
Glycerin (Appx E, Sec II, Item 16)
Gloves (Appx E, Sec II, Item 43)
Before working on the RO elements, make certain that in-line pressure is relieved
and drain valves (3 thru 9, Figure 3-12) are opened to drain the RO vessels and piping.
Failure to do so could result in injury or death.
a. Make certain the valves in Figure 3-12 are in the following positions:
System pressure control valve (1) open.
Product vent valve (2) open.
Product drain valves (3 thru 6) open.
Waste drain valves (7 thru 9) open.