ThermoFlex-Manual.pdf - 第85页
Section 6 ThermoFlex 6-5 Thermo Scientific Chiller Surface Hoses Ther moF lex7500 - 10000 F or air-cooled c hillers , remov e the one-piece g rill assembly by pulling the assembly aw ay from the chiller . W ater-cooled ch…
6-4 ThermoFlex
Section 6
Thermo Scientific
Condenser Filter
Failure to clean/replace the condenser lter will cause a loss of
cooling capacity and lead to premature failure of the cooling
system.
ThermoFlex900 - 5000
Clean the lter through the grill using a vacuum with a soft-bristle brush.
When it is time for a more thorough cleaning, remove the one-piece grill
assembly by rst pulling the bottom of the assembly away from the chiller
and then pulling it away from the top.
The condenser framing and ns located behind the grill assembly
are very sharp. Use caution when removing the assembly.
Note ThermoFlex900 - 5000 water-cooled chillers have an embedded
screw(s) located at the top (and bottom) of the grill. Loosen the screw(s)
to remove the grill.
Water-cooled chillers also have a fan with sharp blades, ensure the
chiller is off before removing the assembly.
Shake off as much of the excess water as possible before reinstalling. Press
the grill back into place.
For water-cooled chillers, tighten the screw(s) at the top (and bottom) of
the grill.
Replacement grill assemblies are available from Thermo Fisher.
Screw
(Water-cooled chillers)
CAUTION - Sharp edges
Figure 6-3 ThermoFlex900 - 5000 Condenser Grill Removal
ThermoFlex3500 - 5000 water-cooled chillers
have two screws securing the condenser. One
screw on the top and one on the bottom.
WARNING
WARNING
CAUTION
Section 6
ThermoFlex 6-5
Thermo Scientific
Chiller Surface
Hoses
ThermoFlex7500 - 10000
For air-cooled chillers, remove the one-piece grill assembly by pulling the
assembly away from the chiller.
Water-cooled chillers do not have a lter.
The lter goes over four studs and plastic "fast nuts" hold it in place.
Replace it or vacuum the old lter with a soft-bristle brush, or wash it.
Shake off as much of the excess water as possible before reinstalling.
Tuck the lter around the perimeter of the grill and over the four studs,
use the plastic "fast nuts" to hold it in place.
Replacement grills are available from Thermo Fisher.
Figure 6-4 Filter Removal/Replacement ThermoFlex7500 - 10000 Air-Cooled
"fast nut"
Clean the chiller's surface with a soft cloth and warm water only.
Inspect he chiller's external hoses and clamps on a regular basis.
ThermoFlex15000 - 24000
The air-cooled chillers do not have lters but the condenser ns can be
cleaned by removing the eight screws securing the lower-front panel.
6-6 ThermoFlex
Section 6
Thermo Scientific
DI Filter (Optional)
Establish a preventive maintenance schedule for the DI lter cartridge
based on your specic application.
The Puralite sensor located on the back of your chiller will illuminate red
when it is time to change the DI lter cartridge (< 1 MΩ-cm).
Note When the chiller is initially powered, or
has been sitting idle for a period of time, the
sensor may illuminate. The length of time it
will be on varies with your application.
Although the Puralite sensor is the primary
indicator that the cartridge needs changing,
the chiller also has a separate integrated alarm
that works independently of the Puralite. The
alarm is based on chiller run hours that will
alert you when it is time to change your lter.
The di t alarm is enabled using the Setup
Loop, see Section 4.
If you already know how often your DI lter needs changing, you can
input the number of hours into the Setup Loop's di t display. When
the time is reached, the controller will ash di and the audible alarm, if
enabled, will sound.
When alerted, check the Puralite sensor to see if it is illuminated. If it is
not illuminated reset the di t timer and then check the Puralite periodically.
To clear this message and stop the audible alarm press
.
If the Puralite has turned red and the controller alarm has not gone off,
access the Diagnostic Loop di display, see next page. Check the system run
hours, this will give you an accurate DI replacement time. Adjust the di t
lter alarm to match the time needed between lter cartridge changes.
This will automatically restart the preventive maintenance timer for your
DI lter. If you change the lter before the preventive maintenance timer
alerts you, you can clear the timer by again accessing the Diagnostic Loop
di display, see next page.
Note It may be necessary to monitor the Puralite three or four times
to establish an accurate changing schedule. Also, lter operating time is
reduced every time new uid is added.
Figure 6-5 Puralite