Thermo Scientific 7450, Operating And Maintenance Manual

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4-2 7007452 CryoMed Freezer Thermo Scientific
Section 4
Maintenance
Clean a Major Spill in the
Chamber
1. Turn the unit off and disconnect it from the power source.
Warning Be sure to disconnect the power source as the interior fan may
start unexpectedly, under certain conditions. ▲
2. Disconnect the probe from the connector, if applicable. Remove the
sample holders (IVF only).
3. Remove the two screws at the top and bottom of each side, securing
the screened side ducts to the chamber. Set the ducts aside.
4. Press the top and bottom edges of the center duct toward each other
and draw the duct outward to remove.
5. The chamber is now fully accessible and can be cleaned.
6. Clean the interior of the unit with an appropriate disinfectant. Clean,
rinse and wipe dry, as needed. Clean the screened side ducts and center
ducts before reinstalling.
7. Press the top and bottom edges of the center duct toward each other
and insert the duct into the center of the chamber. The edges fit inside
the door gasket.
8. Install each screened side duct. Locate the tabs on the back of each
duct into the proper holes at the back of the chamber. Align the two
screw holes and secure at the top and bottom of each side.
Caution Be sure all chamber components are re-installed in the proper
locations to avoid compromising the chamber airflow and temperature
uniformity.
▲
Caution Avoid damaging the chamber opening gasket. ▲
9. Connect the Sample probe to the connector, if applicable.
10. All chamber parts must be re-installed for consistent uniformity and
airflow. Connect the unit to the power source and turn it on.
11. The freezer is ready to be returned to service.