43
Poor quality feed water.
If a Barnstead ROpure is the feed
water source, check that the
membrane is functioning properly.
If a Barnstead Still is the feed water
source, ensure that the distillate
temperature to the NANOpure
DIamond does not exceed 40°C
(104°F).
If feed water is from a central water
purification system, verify water quality
and proper functioning of the system.
See “General Specifications.”
Purity display continuously
Air in system.
Dispense more water through the
“OVERRANGE.”
NANOpure DIamond to purge air from
the unit.
Bad cell connection.
Check the connection of the cell as it
attaches to the meter circuit board
mounted on the inside of the right door.
Incorrect N.I.S.T. calibration offset.
If you have a N.I.S.T. module, perform
a N.I.S.T. calibration.
If you do not have a N.I.S.T. module,
perform the calibration function
WITHOUT the calibration module (as if
you had it; answer (YES) to prompt.
The display will read “Calibration
(failed)” but this will clear any incorrect
offset to zero.
Display reads,
0.2 micron filter clogged.
Replace final filter as indicated in “0.2
“Overpressure Error.”
Micron Filter Replacement.”
Display reads, “Meter
PC board communication error.
Turn the NANOpure DIamond OFF
Board Problem.”
(I/O Switch) and restart the unit.
System electronics failure.
Replace the resistivity meter board
mounted on the inside of the right door.
Water is leaking between the
Wing head screws are not
Tighten wing head screws on unit
manifold and the cartridge pack. tight enough.
manifold.
New cartridge pack: o-ring missing
Disconnect inlet water and
from post (each of the 4 posts
depressurize system. Next, disconnect
must contain an o-ring.)
the manifold and verify/replace missing
o-ring. Reinstall cartridge pack as
indicated in “Cartridge Pack
Replacement.”
T
ROUBLESHOOTING
