Troubleshooting - Thermo Scientific E-pure 1090 Series User Manual

Symptom
E-pure completely inactive (pump not
operating.)
Pump does not run. Display lights.
Recirculated water will not rinse up
to desired purity level.
Reduced or no product flow.
Leaking canisters.
Thermo Scientific
Section 9
Probable Cause
No electrical power to E-pure.
Main fuse is blown.
Pump protector (in reservoir), feedwater line
pressure switch, or jumper plug not con-
nected to pump module.
Exhausted cartridges.
Cartridges out of order.
Cartridges upside down.
Feedwater bypassing cartridge
Final filter clogged.
Large O-ring on cartridge holder is missing,
damaged or not installed properly.

Troubleshooting

Test and Remedy
Ensure that the E-pure power cord is connected to a live
power source and completely plugged into the outlet.
Replace the main fuse as indicated under Main Fuse
Replacement in the Maintenance Section.
Connect the pump protector or pressure switch cord to the
receptacle on the left side of the pump housing. If a Thermo
Scientific pressure switch is installed in the feedwater line,
the pump will not start until the line pressure rises to 0.35
kg/cm2 (5 psi).
Open the feedwater line shutoff valve or fill the feedwater
reservoir.
If no pump protector is used, make sure a jumper plug is
installed.
Replace all the cartridges as indicated under Cartridge
Replacement in the Maintenance Section.
Install the cartridges in the proper order as indicated under
Initial Operation.
Install the cartridges right side up as indicated under Initial
Operation.
Be sure that small O-ring inside head is cartridge(s). not
damaged and is properly installed.
Replace the final filter as indicated under E-pure Final Filter
Replacement.
Replace or position correctly.
E-pure® Water Purification 9-1