Barnstead D4631 120 VAC Operation Manual - Trouble Shooting Chart
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Barnstead |Thermolyne • 800-553-0039
Trouble Shooting Chart
Symptom
Probable Cause
Test and Remedy
E-pure
®
completely inactive
(pump not operating.)
No electrical power to E-pure
®
.
Ensure that the E-pure
®
power
cord is connected to a live power
source and completely plugged
into the outlet.
Main fuse is blown.
Replace the main fuse as
indicated under Main Fuse
Replacement in the Maintenance
Section.
Pump does not run. Display
lights.
Pump protector (in reservoir),
feedwater line pressure switch,
or jumper plug not connected to
pump module.
Connect the pump protector or
pressure switch cord to the
receptacle on the left side of the
pump housing. If a Barnstead
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.
Recirculated water will not rinse
up to desired purity level.
Exhausted cartridges.
Replace all the cartridges as
indicated under Cartridge
Replacement in the Maintenance
Section.
Cartridges out of order.
Install the cartridges in the proper
order as indicated under Initial
Operation.
Cartridges upside down.
Install the cartridges right side up
as indicated under Initial
Operation.
Feedwater bypassing
cartridge(s).
Be sure that small O-ring inside
head is not damaged and is
properly installed.
Reduced or no product flow.
Final filter clogged.
Replace the final filter as
indicated under E-pure
®
Final
Filter Replacement.