Maintenance And Troubleshooting; Cleaning The Exterior; Cleaning The Condenser; Cleaning The Condenser Filter - Thermo Scientific TSX Series Installation And Operation Manual

Maintenance and Troubleshooting

CAUTION: Maintenance should only be
performed by trained personnel.
WARNING: Unauthorized repair of your
freezer will invalidate your warranty. Contact
Technical Service at 1-800-438-4851 for
additional information.

Cleaning the Exterior

Clean the exterior of the freezer as needed. If misting or
spraying be careful around the user interface area and avoid
spraying upward.
Compatible cleaning agents include the following: Mild
detergent, Hydrogen Peroxide, Acetic Acid, Ammonium
cleaning solutions, and 70% Isopropyl alcohol.

Cleaning the Condenser

CAUTION: Condensers should be cleaned at
least every 6 months: more often if the
laboratory area is dusty. In heavy traffic areas
condensers load with dirt more quickly. Failure
to keep the condenser clean can result in
equipment warm-up or erratic temperatures.
CAUTION: Risk of cut. Never clean around
the condensers with your fingers. Some
surfaces are sharp.
Clean the condenser at least every 6 months; more often if
the laboratory area is dusty.
To clean the condenser, complete the following steps:
1. Pull the grille door open.
2. Vacuum the condenser.
3. Inspect the filter cleanliness and clean as required.
4. Close the grille door.
32 | Maintenance and Troubleshooting
Cleaning the Condenser
Filter
Clean the condenser filters every 2 or 3 months.
There are 2 condenser filters: a main filter and a lower filter for
extra air flow into the condenser.
1. Pull the grille door open.
2. Remove the filters.
3. Shake the filters to remove loose dust, rinse the filters in
clean water, shake the excess water from the filters, and
replace the filters.
4. Close the grille door.

Gasket Maintenance

Periodically check the gaskets around the door for punctures
or tears. Leaks are indicated by a streak of frost which forms
at the point of gasket failure. Ensure that the cabinet is level.
(Refer to Installation).
Keep the door gaskets clean and frost free. Wipe with a soft
cloth or cryo-gloved hand. If needed, a rubber mallet may be
gently used to loosen ice.

Defrosting the Freezer

Defrost the freezer once per year or whenever the ice buildup
exceeds 3/8 inches. To defrost, complete the following steps:
1. Remove all products and place in another ULT cabinet.
2. Turn off the freezer. Using standby mode and
then removing power.
3. Open the outer door and all inner doors.
4. Let the freezer stand with doors open for at least
24 hours. This allows both the interior and foamed
refrigerant system to warm to room temperature.
5. Dispose of the ice and wipe out any water standing in the
bottom of the cabinet.
6. Clean the interior with a Compatible cleaning agents
include the following: Mild detergent, chlorine, Hydrogen
Peroxide, Peracetic Acid, Acetic Acid, Quatemary
ammonium cleaning solutions, and 70% Isopropyl
alcohol.
7. Close the doors, restart the freezer, and reload.
Refer to Initial Loading.
Ultra Low Temperature Freezers