2-7. REVERSE OSMOSIS MEMBRANES CLEANING (CONT)
Close valves V-9 and V-10.
Shut down boost pump (para 2-8).
Stand barrel on end. Remove valves V-9 and V-10 from barrel connection.
Get new barrel of Hydrakleen-20 (item 6, appendix D). Insert valve V-9 threaded fitting into large barrel
connection. Insert valve V-10 into small barrel connection.