IONPURE
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VNX CEDI Modules
Page 38 IP-MAN-VNX-1019-EN.pdf
8. SHUTDOWN AND STORAGE
This section contains shutdown procedures for a VNX module. Under certain
circumstances, bacterial growth can occur quickly in water left stagnant within each
module or the overall system.
8.1. System Shutdown
· For off-line periods ≥ 7 days, follow steps below:
· Shut off feed water to VNX module(s).
· Drain standing water out of VNX module(s).
· Close isolation valves to prevent evaporation of water in membranes and resins.
8.2. Startup After Shutdown
· If desired, sanitize VNX module(s).
· Divert product outlet to drain.
· Turn on feed water to VNX module(s).
· Operate unit with DC power on, flushing to drain.
· Send to use point when desired product water quality achieved.
8.3. Rebuild or Repair
· Rebuilding of VNX modules is not practical, and therefore not offered. Certain types
of repairs might be possible, but must be performed at an authorized Ionpure repair
facility, and can’t be done on-site. Contact your OEM or local Ionpure representative
for options.
8.4. Disposal
· Perform a 5 minute once-through flush with DC power off using a 5% NaCl solution at
a product flow rate between minimum and nominal flow, and at about 90% recovery.
· Then flush the modules with tap water (drinking water quality) at minimum flow (also
with DC power off) for 10-30 minutes.
· The modules can then be discarded as normal (non-hazardous) waste.
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