2.12 Operation and MaintenanceThe operation and maintenance of an E2/EZ2-Series RO machine requires regular datarecording and routine preventative maintenance. It cannot be emphasized enough theimportance of filling out the Daily Log Sheet (Technote 106) during each operating shift.A Start-Up Data Sheet (Technote 101) should have been completed at start-up. The Start-Up Data Sheet contains pertinent facts on the operation of your machine. These tworecords are invaluable in diagnosing the performance of the equipment, and must be keptfor reference. If you have questions concerning the operation of your machine or themethod of data recording, contact the manufacturer.Three preventative maintenance procedures, which must be done on a regular basis, areas follows:1. Change the pre-filter cartridges as needed.2. The machine needs to run and flush for at least 10 minutes every 72 hours, clocktime.3. Clean the RO membrane elements with approved cleaners at least quarterly,depending on feed water quality.2.13 Pre-filter CartridgeA 1 micron pre-filter cartridge is factory installed to protect the membrane elements andvalves from particles, which may be in the feed water. To order replacements, see theSpare Parts List (Technote 109).A pressure drop across the filter of 8 psi (0.55 bar) or more during operation indicates thatthe pre-filter cartridge(s) need changeing. Use only GE approved filters rated at 2 micronsor less. Refer to Technote 109 (Spare Parts List) for pre-filter cartridge replacements. Donot attempt to clean used pre-filter cartridges.NOTE: Failure to perform normal preventative maintenance procedures will voidmachine warranty.2.14 Daily FlushingA manually flush of the E2/EZ2-Series must be done machine daily.To flush the machine:NOTE: During flushing procedure, the machine must be running.STEPS1. With the machine running, open the concentrate valve 1/2 -3/4 of a turn(Figure 2.1, Flow Control Center).9