16 | Maintenance
Thermo Fisher Scientific ULT Freezers
Battery Specification
:
Rechargeable sealed lead-acid battery, 12 V, 7.0 Amp Hr.
Replacement batteries can be purchased directly from
Thermo Fisher Scientific.
Figure 6. Battery Specification
Maintenance Schedule
Regular maintenance is important to keep the unit working
properly. Inspect/clean as directed in the manual.
Item
Interval
Ice/Frost
build up
To maintain proper closure of inner
doors, remove any ice or frost build up
around the gasket, inner doors, and
breakers as necessary.
Gasket
Periodically check the gaskets around
the door for punctures or tears.
Periodically clean the ice-build up
around the gasket.
Filter
Clean the condenser filter(s) every two to
three months.
Condenser
Clean every six months, more often if the
laboratory area is dusty.
Battery
Replace the battery as indicated by
system alarms or as necessary per
individual status evaluation. Check the
battery connections regularly. Although
not required, annual battery replacement
is recommended to ensure proper
battery status in the event of power
failure.
Defrost
Defrost the freezer once a year or when
the ice build exceeds 3/8” (0.95 cm)
