RO SYSTEM TROUBLE SHOOTING
PROBLEM REMEDY
General
High Product Water TDS
Membrane frozen, high temp, or backpressure. Replace membrane.
Membrane attack by chlorine Carbon pre-filter may be exhausted. Replace filter and membrane.
Product seal on end cap. Determine if seal or o-ring is bad. Replace as needed.
No Product Water or Not Enough Product Water
Feed water shut off. Turn on feed water.
Low feed pressure. Feed pressure must be at least 10 psi. Consider booster pump.
Pre-filter cartridge clogged. Replace pre-filter cartridge.
Membrane fouled. Determine and correct cause; replace or clean membrane.
Product check valve stuck. Clean or replace check valve.
Low pump discharge pressure
Low feed water temperature
Adjust reject valve or replace pump
Increase membrane feed pressure or heat the feed water.
IV. REPLACEMENT PARTS LIST
A list of common replacement parts is provided below. Contact your dealer for replacement
parts assistance.
Part Number Description
FPMB5-978 Prefilter for R13-0250
FPMB5-20 Prefilter for R13-0600 & R13-1200
R96310 RO membrane for R13-0250
R96320 RO membrane for R13-0600 & R13-1200
PG07B25 Prefilter pressure gauge 0 – 100 psi
PG20B25 Pump discharge pressure gauge 0 – 300 psi
R5645 Product and reject flow meter 0 – 50 gph
WDM-2 Water quality meter
R2200-120/60 Motor 0.5 HP single phase 120 volt
R2101-140 Pump 140 GPH carbonator with relief valve
R23-1070S Low pressure controller with on/off switch
R23-PS32 Low pressure switch, ¼” MPT
NV-10 Reject & recycle needle valve
R2402 Inlet solenoid valve, 1/2”, 120 volt coil
R9812-4SS Product check valve
