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Problem
Nanopure completely inactive (pump and
display not operating.)
Reduced or no product flow from the
dispense arm or remote dispenser (if
attached).
Display reads, "Check Inlet" and pump
does not run.
Display reads, "...MΩ-cm" for more than
10 seconds.
Recirculated water will not rinse up to
desired purity level.
Short cartridge pack life.
Thermo Scientific
Troubleshooting
Section 13
Possible Causes
No electrical power to Nanopure.
Main fuse(s) blown.
Power supply fuse blown.
0.2 micron filter clogged.
UF module clogged.
Feed water not connected.
Pump protector (in reservoir), feed water
line pressure switch or jumper plug not
connected to pump interlock.
Insufficient feed water pressure or volume
to satisfy the Nanopure.
Air in cell.
Bad cell connection.
Exhausted cartridge pack.
Cartridge pack is beyond expiration date.
Solutions
Ensure Nanopure power cord is connected to a live
power source and completely plugged into electrical
outlet as well as power entry module on the unit.
Make sure on/off switch is in the "I" (on) position.
Replace the main fuse(s) as indicated in "Fuse
Replacement."
Contact Technical Services concerning power supply
fuse replacement.
Replace final filter as indicated in "0.2 Micron Filter
Replacement" section.
Reconnect feed water.
Connect the pump protector, jumper plug or pressure
switch cord to the receptacle located on the upper left
hand section of the Nanopure.
Open feed water line shut off, connect feed water
line to Nanopure and ensure sufficient pressure or
sufficient water level in the feed water reservoir).
If you just started your Nanopure, wait 1 minute to
see if it corrects itself.
Check connection of the cell as it attaches to the
circuit board.
Replace cartridge pack as indicated in "Cartridge Pack
Replacement."
Check the expiration date. Cartridge packs begin to
lose capacity after being stored for 2 years from the
date of manufacture. Replace the cartridge pack with
an unexpired one.
Nanopure Life Science (UV/UF)
13-1
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