TROUBLESHOOTING
Milli-Q Synthesis/Synthesis A10 77
Chapter 7 TROUBLESHOOTING
THE PROBLEM IS LOW OR NO FLOWRATE FROM THE POU DISPENSER
CAUSE REMEDY
System is in PRE OPERATE Mode. Place Milli-Q into PRODUCT Mode. See Section 5-1.
No feedwater to the Milli-Q from the Reservoir.
Remove the Feedwater Tubing from the Milli-Q.
Confirm that there is water coming to the Milli-Q.
Reservoir is empty.
Fitting on bottom of Reservoir is too tight; gasket on
fitting is flattened and restricts water flow.
Reservoir is located lower than the Milli-Q.
Kink in Feedwater Tubing.
Valve on bottom of Reservoir is closed by mistake.
No feedwater to the Milli-Q from Pressurised Pipe
(Loop). Remove the Feedwater Tubing from the Milli-Q.
Confirm there is water coming to the Milli-Q.
No water in Loop.
Water is not pressurised in Loop.
Pressure Regulator on Feedwater Tubing is not
adjusted to between 0.1 and 0.3 bar while water
is flowing through it (Milli-Q in PRODUCT Mode).
See Section 4.7.
Pressure Regulator is installed backwards. See
Section 4-1.
Millipak is airlocked.
ent air out while system is in PRODUCT Mode.
See Section 4-9
Millipak is clogged and will not allow water through it. Measure water flow with and without Millipak
installed. Change Millipak and vent air out. See
Section 4-9.
Screen Filter Clogged. Clean the Screen Filter. See Section 6-6.
Problem with internal component (motor not operating;
Inlet Solenoid Valve not opening; etc).
Contact Millipore.
Remote POU Dispenser connected wrong or not
plugged into the Milli-Q.
Check tubing connections on back of Milli-Q. See
instructions that came with Remote POU Dispenser.
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