ThermoFlex-Manual - 第83页
Section 6 ThermoFlex 6-3 Thermo Scientific Reservoir Cleaning The user is responsible for maintaining reser voir uid quality . Check the uid on a regular inter val. Start with frequent checks until a regular inter val (…
6-2 ThermoFlex
Section 6
Thermo Scientific
The reservoir has a uid bag lter designed to prevent the introduction of
particulates into the system. Chillers are shipped with a bag lter in place.
Note The uid bag lter can be removed with the chiller operating.
Before using any uid or performing maintenance where contact
with the uid is likely refer to the manufacturer’s MSDS for handling
precautions.
Fluid Filter Bag
Before replacing the reservoir housing ensure the reservoir sight
tube ball stopper is securely in place, see next page.
On ThermoFlex900-5000s, when you remove the bag you will notice a
wire mesh uid diffuser inside the reservoir supply line, see Figure 6-2. The
diffuser is used to help streamline the ow into the reservoir. After several
bag replacements turn the chiller off and remove the diffuser to inspect it
for debris/damage.
The uid velocity into the reservoir will rapidly increase with the
diffuser removed and cause splashing. Turn the chiller off before
removing the diffuser. This is especially critical when using ethylene
or propylene glycol.
Note To prevent particulates from entering the reservoir, ensure the uid
bag lter is in place before removing the diffuser.
Do not operate the chiller unless the diffuser is installed.
Fluid Bag Filter
Figure 6-1 Fluid Filter Bag
Funnel Housing
Fluid Diffuser
WARNING
WARNING
CAUTION
CAUTION
When it is time to replace the bag,
gently pull up on the plastic funnel
housing to remove it and simply pull
the bag out of the chiller. Replacement
bags are available from Thermo Fisher
Scientic.
Section 6
ThermoFlex 6-3
Thermo Scientific
Reservoir
Cleaning
The user is responsible for maintaining reservoir uid quality. Check the
uid on a regular interval. Start with frequent checks until a regular interval
(based on your application) is established.
If cleaning is necessary, ush the reservoir with a uid compatible with the
process uid and the chiller's wetted parts, see Section 8.
Before using any uid or performing maintenance where contact
with the uid is likely refer to the manufacturer’s MSDS for handling
precautions.
Reservoir Sight Tube
Clean the sight tube by gently pulling up on the plastic funnel housing to
remove it (see illustration on previous page) and then gently pulling out the
black sight ball stopper from the tube. Use a long soft-bristle ¼" brush.
Use caution not to scratch the glass.
Before replacing the reservoir housing ensure the reservoir sight tube
ball stopper is securely in place.
For easier replacement, wet the stopper rst and then use a twisting motion
to install it in the sight tube.
Wire Mesh Fluid Diffuser
(ThermoFlex900-5000)
Sight Tube
Ball Stopper
Figure 6-2 Reservoir Cleaning and Diffuser
An effective recommended maintenance plan would include changing
the uid every six months to optimize chiller reliability, see Section 3 for
additional information.
Fluid Maintenance
WARNING
CAUTION
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