19 REVERSE OSMOSIS INSTALLATION AND USER GUIDE BARRIE ● ONTARIO ● CANADA 705.733.8900 WWW.EXCALIBURWATER.COM TROUBLESHOOTING GUIDE Troubleshooting Procedures Problem Possible Cause Solution 1) Low quantity of Reverse Osmosis Product Water from Holding Tank a) Reverse Osmosis Feed Water Ball Valve is plugged or closed a) Open Valve or unclog b) Clogged Sediment Pre-filter or Activated carbon Pre-filter b) Replace Reverse Osmosis filters c) Low water pressure c) Reverse Osmosis feed water pressure must be above 40 psig d) Reverse Osmosis membrane is fouled d) See feed water operating limits and correct the cause of fouling, then replace membrane e) Plugged in-line activated carbon post filter e) Replace post filter f) Air pre-charge pressure in holding tank is too high Empty water from Reverse osmosis holding tank and with the faucet open, adjust air pressure to 5-7 psig (35-48 kPa) range. g) Air pre-charge is too low h) Air bladder in the holding tank is ruptured h) Replace the holding tank i) Holding tank valve is closed i) Open the holding tank valve j) No drain flow, the drain restrictor is plugged j) Clear or replace Drain Restrictor k) The check valve is stuck k) Free the check valve l) ASO valve is malfunctioning l) Replace ASO valve 2) Low pressure at the Reverse Osmosis Dispensing Faucet a) In-Line activated carbon post filter is plugged a) Replace post filter b) Air pre-charge in the Reverse Osmosis Holding Tank is too low b) Empty water from holding tank with faucet open, adjust air pressure to 5-7 psig (35-48 kPa) c) Holding tank valve is partially closed c) Fully open the holding tank valve d) The dispensing faucet is out of adjustment or faulty d) Repair or replace dispensing faucet e) Holding tank is depleted after heavy water usage e) Allow holding tank to refill or add second holding tank to increase the storage quantity f) Low water production See troubleshooting section#1 3) Tastes and odors in the product water a) The in-line or activated carbon prefilter is exhausted a) Replace RO filters b) There is a foreign matter in the RO holding tank b) Clean, flush and sanitize the system. Replace the filters c) The product water and drain lines are reversed c) Correct plumbing d) Dissolved gases in the RO feed water d) Pre-treat RO feed water to remove dissolved gases. e) Increase in product water TDS e) See high TDS in the RO product water section
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