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Section 6: Trouble Shooting Guide
Problem
Possible Cause
Solution
Low or Declining
Water supply valve closed.
Open valve.
Permeate Production
Crimped poly product line
Repair or replace tube
Raw water TDS too high
Consult dealer – may
need pre-treatment.
Membranes fouled.
Clean or replace
membrane.
Fast flush system.
Feed water content has changed.
Review pre-treatment.
Pre-treatment cartridges plugged.
Replace cartridges.
Leaking Joints
Fittings not seated.
Disconnect fitting
and reseat tube.
Filter housing leaking.
Tighten with housing
wrench.
Inspect o-rings for cuts
or crimps.
Low System Pressure
Clogged pre-filters.
Replace pre-filter
cartridges.
Low feed water pressure.
Check feed water
source for restrictions.
Malfunctioning pressure gauge.
Replace gauge.
High System Pressure
Plugged or restricted concentrate orifice Clean or replace valve
and/or recirculation valves.
or orifice.
Crimped concentrate or product line.
Repair or replace tube.
Malfunctioning pressure gauge.
Replace gauge.
Permeate TDS Rising
Scaled or fouled membranes.
Replace membranes.
Fast flush membrane.
Pre-treatment system failure.
Check feed water
quality.
Section 6: Common Replacement Parts
Part Description
Part Number
Excelpure 10” 5 Micron PP Filter Cartridge
PP10B05
Excelpure 20” Carbon Block Filter Cartridge
CBC10B
Auto Shutoff Valve
ASV3800
Pressure Gauge, 0-100 psi
AG06
Pre-filter Housing Wrench
HAN13W
Orifice Plate
5865071
Black Max 400GPD Membrane ULP TFC
BME3013SXL
