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TROUBLESHOOTING
Symptom
No flow to hollow fiber.
No flow to flush tank.
No flow to cartridge manifold.
No flow to drinks.
No flow to hot beverages or ice
machines.
Low flow to hollow fiber.
Low flow to flush tank or
cartridge manifold.
Low flow to cartridge manifold.
12 • PENTAIR® EVERPURE® SC HIGH-FLOW WATER FILTRATION SYSTEMS INSTALLATION, OPERATION & MAINTENANCE GUIDE
Possible Causes
Inlet valve closed.
Inlet flow control plugged.
Tank valve closed.
Tank precharge is too high.
Manifold inlet valve is closed.
Scale inhibitor valve or inlet
valve closed.
Manifold valves closed.
Inlet valve closed or flush
valves open. Damaged valve.
Scale inhibitor inlet valve
closed.
Additional valves closed
downstream.
Inlet valve closed.
Inlet flow control plugged.
Tank valve closed.
HFUF cartridge is plugged and
at the end of it's service life.
Inlet pores of HFUF are plugged
with sediment or biological
growth.
Cartridge manifold valve not
fully open.
Remedies
Open inlet valve; check water supply to system.
Turn off water supply to system. Depressurize system. Remove inlet
hose and use light to check flow control for debris. If not visible,
remove hex nipple after inlet valve and see if inlet flow control is
plugged. Use 100 micron inlet screen to prevent in future.
Open tank valve.
Make sure precharge is at 20 psi (1.37 bar/137 kPa).
Check if manifold inlet valve is open.
Check if scale inhibitor valve and any downstream valves are open.
Check outlet check valve for obstruction.
Check if inlet, manifold valves are open.
Open inlet valve and close flush valves.
Check if inlet, manifold and scale inhibitor valves are open.
Check rest of plumbing to equipment.
Open inlet valve.
Remove inlet hose and use light to check flow control for debris. If not
visible, remove hex nipple after Inlet Valve and see if inlet flow control
is plugged. Use 100 micron inlet screen to prevent in future.
Open Tank Valve.
If HFUF is less than three (3) years old, contact technical support. If
HFUF is more than three (3) years old, it should be replaced.
Unscrew HFUF housing and inspect top of HFUF cartridge for large
particles or slime blocking inlet pores. Do not remove the HFUF
cartridge from the housing. Clean with filtered water stream. If still
visibly blocked, replace module and install screen filter before inlet
to trap larger particles. If not blocked, reinstall and complete HFUF
sanitization procedure. Check flow again. If still low, replace HFUF and
contact technical support for additional recommendations.
Open cartridge manifold valve.
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