User Guide

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Sudden drop in RO water production: There are a few potential factors causing
the problem?
• Feed water valve is plugged or closed.
• Sediment/Carbon prefilter or Carbon Post Filter is clogged.
• Low incoming water pressure.
• Reverse Osmosis Membrane is fouled.
• Air pressure in holding tank is incorrect.
• Air Bladder in Holding Tank is ruptured.
• Holding Tank valve is closed.
• No water to drain. Drain Flow Restrictor is clogged.
• Check Valve on RO Membrane Housing is stuck.
• The Automatic Shut-Off Valve is Malfunctioning.
Will the water out of UV filter be hot?
Traditionally, the water coming out of the UV filter is a bit hot, up to 117F, for the first few seconds.
However, iSpring UV filter features Smart Flow Sensor valve that automatically turns on and off UV by
water flow, simultaneously controlled by drinking faucet. The UV stays off until drinking faucet is turn
on. So no more hot water out of UV filter.
How do you compare your tankless RO system RCS5T to GE Merlin 700GPD
system?
Our RO system is a complete 5-stage filtration system, with 3 pre filters (Sediment, GAC, and CTO),
Side-Flow® membranes, and post filter; while the GE Merlin 700GPD has only one prefilter (either
sediment or carbon), two membranes, and 1 post filter. Therefore, the GE Merlin is for use in light
commercial applications where a separate pre-filter system or backwashing carbon filter system will
be utilized. Also, our tankless RO system utilizes patented Side-Flow technology, which waste ratio is
less than 1, as compared to the 3:1 in other systems, saves up to 2/3 of water.