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
FPMB5-20
Prefilter, 5 micron, melt blown
W-4040-LE
RO membrane, low energy
R2451
Prefilter pressure gauge 0 – 100 psi
PG20B25
Pump discharge pressure gauge 0 – 300 psi
R4507
Product flow meter 0.5 – 5 gpm
R5316
Reject flow meter with valve 0.5 – 5 gpm
WDM-2
Water quality meter
R6316-HPS7D
Pump & motor 0.75 HP for R4X40-1
R6316-HPS7E
Pump & motor 1.0 HP for R4X40-2
R6316-HPS10F
Pump & motor 1.5 HP for R4X40-3
R23-1075
Controller with on/off switch
R23-PS32
Low pressure switch, ¼” MPT
T1100
Recycle needle valve PVC
K8012-24
Inlet solenoid valve, ¾”, 24 volt coil
R96-R4040A300E
Pressure vessel with end caps, 300 psi, FRP
Summary of Contents for R4X40
Page 1: ...REVERSE OSMOSIS INSTALLATION AND OPERATION MANUAL Model R4X40...
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