ThermoFlex-Manual.pdf - 第81页
ThermoFlex 6-1 Thermo Scientific Section 6 Preventive Maintenance Only Ther mo Fisher should provide any required replacement par ts . The T her moFlex chiller has an integrated preventiv e maintenance timer that will ale…
Section 5
5-10 ThermoFlex
Thermo Scientific
Installation kit - includes replacement air and uid lters
Maintenance kit - includes a set of hoses, adaptor ttings and Teon
®
tape
Fluids
Fluid treatment kit
Please contact Thermo Fisher Scientic's Sales, Service and Customer
Support to assist you with questions that you may have regarding
accessories for your ThermoFlex, see inside front cover for contact
information.
Other Accessories
ThermoFlex 6-1
Thermo Scientific
Section 6 Preventive Maintenance
Only Thermo Fisher should provide any required replacement parts.
The ThermoFlex chiller has an integrated preventive maintenance timer that
will alert you when it is time to perform preventive maintenance. This unique
feature will remind you to change your air and uid lters.
Based on the environment in which your chiller is located, you can choose
from four levels of preventive maintenance off, L1, L2, and L3:
• off – Disables the alert
• L1 – 1,000 hours - default setting
· Heavy manufacturing environment
· Airborne particulate created during manufacturing process
• L2 – 2,000 hours
· Typical production environment
• L3 – 3,000 hours
· Clean environment – ltered air
· Typically laboratory or research environment
Change/set the level using the Setup Loop, see Section 4. When the chiller
exceeds the chosen limit, the controller will ash and, if
enabled, an audible alarm will sound.
To clear this message press
. This will automatically restart the
preventive maintenance timer for your lters. Each time the chiller exceeds
the chosen time, the controller will remind you that it is time to change your
lters.
If you change your lters before the preventive timer trips, you can clear the
timer by using the Diagnostic Loop explained in this Section.
Note For air-cooled chillers, both the air and uid lters in the ThermoFlex
can be changed while the chiller is running. For water-cooled chillers, only the
uid lter can be changed while the chiller is running.
Preventive
Maintenance Timer
( )
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.