Thermo Scientific 7165, Operating Manual And Parts List

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5-8 Type II Water System Thermo Scientific
Section 5
Maintenance and Servicing
Troubleshooting
(continued)
Message Possible Causes Action
Water is leaking between the
manifold and the cartridge
pack.
Wing head screw is not tight
enough.
Hand-tighten wing head screw
on unit manifold.
New cartridge pack: o-ring
missing from post (each of the
4 posts must contain an o-
ring.)
Turn off power to system.
Disconnect quick connect fit-
ting in tube from reservoir.
Disconnect the manifold and
verify/replace missing o-ring.
Reinstall cartridge pack as
indicated in “Cartridge Pack
Replacement.”
Leaks at membrane, drain
connections, tank connections,
or remote connections. Burrs on tubing.
Remove tubing as shown in
“Tubing Removal.” Check tub-
ing for burrs.
Tubing not installed in fitting
completely.
Mark tubing and re-install per
“Tubing Installation.”
Reduced or no product flow
from the dispense arm or
remote dispenser, if attached
(low DI dispense flow).
Plugged 0.2 micron final filter.
Replace final filter (Part no.
D3750) as indicated in “0.2
Micron Filter Replacement”
section.
Reservoir not connected.
Reconnect reservoir. Ensure
quick connect fitting in tube
from reservoir is fully engaged.
Reservoir improperly located
too low.
Verify reservoir outlet is locat-
ed at or above system inlet.
DI pump not functioning.
Replace pump (Part no.
PU1190X1)
Pinched tubing.
Check tubing inside system
and between reservoir and sys-
tem.
Air purge not complete.
Allow up to 24 hours of recir-
culation for purging all air from
the fluid path.