Maintenance Schedule - Thermo Scientific TDE Series Manual

The unit must be turned off and disconnected from power
before removing the side panel. To install a new battery,
remove the side panel, remove the battery bracket, install the
new battery, then replace bracket and side panel.
Failure to properly connect the battery can damage electrical
components and potentially hinder normal operation of the
freezer. Consult a certified service technician if there are any
questions or concerns about battery maintenance.
Battery Specification:
Rechargeable sealed lead-acid battery, 12 V, 7.0 Amp Hr.
Replacement batteries can be purchased directly from
Thermo Fisher Scientific.
Figure 8. Battery Specification

Maintenance Schedule

Regular maintenance is important to keep the unit working
properly. Inspect/clean as directed in the manual.
Item Interval
To maintain proper closure of sublids,
Ice/Frost remove any ice or frost build up around
build up the gasket, sublids and breakers as
necessary.
Periodically check the gaskets around
Gasket the lid for punctures or tears. Periodically
clean the ice-build up around the gasket.
Clean the condenser filter(s) every two to
Filter
three months.
Clean every six months, more often if the
Condenser
laboratory area is dusty.
20 | Maintenance
Item Interval
Replace the battery as indicated by
system alarms or as necessary per
individual status evaluation. Check the
battery connections regularly. Although
Battery
not required, annual battery replacement
is recommended to ensure proper
battery status in the event of power
failure.
Defrost the freezer once a year or when
Defrost
the ice build exceeds 3/8" (0.95 cm)
Thermo Fisher Scientific ULT Freezers