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Troubleshooting Deluxe Systems
Symptom Cause Remedy
Feed pump runs but no pressure Feed pump air locked
Pressure relief valve open
Open pressure relief valve to bleed
the air then close to start
Close valve
Feed pump starts but shuts down on
high pressure
Prefilter excessively clogged
Closed valve or blockage in flow
Change filter
Check flow path for closed valve or
kink in hose
Low water production
High amperage
High feed pressure
Strainer or prefilter clogged Service prefilter and strainer
Low water production,
Low pressure
Pressure relief valve partially open
Worn pump head
Close valve
Check flow should be 1.4 GPM
Replace pump head.
Water production normal
High feed pressure high amperage
Cold seawater temperature
Fouled membrane
Normal condition
Clean membrane
Water production normal
Lower pressure
Lower amperage
Warm sea water or brackish water. Normal condition
Asymmetrical pressure and flow
readings between pump shifts
Check valve leaking
Failed annular ring
Shaft seal leaking
Contact dealer or see the Clark
Pump repair manual.