4. The CO2 sensor may be lowered by unscrewing the retaining ring
around the sensor. This will allow the sensor gasket to be removed,
cleaned and replaced. WIPE the CO
2 sensor, do not spray or soak.
5. Wash the inner door gasket with disinfectant. The inner door gasket
may be removed and/or replaced.
6. Wash the cabinet interior with disinfectant, starting at the top and
working down. Refer to the disinfectant directions for length of time
needed before rinsing. Wash the inner door both inside and out. The
cabinet and door must be rinsed with sterile water until the
disinfectant has been removed. After the cabinet has been rinsed, spray
with 70% alcohol.
7. If the CO
2 sensor gasket was removed, spray it with 70% alcohol and
install it. Install the sample filter.
8. Install the top duct, left and right ducts, inner door gasket, and access
port stopper spraying each with 70% alcohol.
9. Install new HEPA Filter.
10. Install the shelves and spray with 70% alcohol.
Clean the incubator exterior with a damp sponge or soft, well-wrung cloth
and mild detergent dissolved in water. Dry with a soft cloth.
The chamber glass door and the optional independent inner glass doors
may be cleaned using the same disinfectant used on the incubator interior.
It is imperative that they be rinsed with sterile distilled water to remove
the disinfectant residue. The doors should then be dried with a soft cloth.
Precautions in the cleaning and care of the incubator glass doors:
Moisture leaches alkaline materials (sodium, Na) from the surface of the
glass. Evaporation of the moisture concentrates the alkaline and may
produce a white staining or clouding of the glass surface. Cleaning
chemicals with a pH above 9 and heat (autoclaving) accelerate the corro-
sion process. Therefore, it is very important to rinse and dry the glass
doors after cleaning. Autoclaving the glass doors should be avoided.
There is no simple method for repairing corroded glass. In most cases,
the glass must be replaced.
5-2 Model 310 Series DH Incubator Thermo Scientific
Section 5
Routine Maintenance
Cleaning the Glass
Doors
Cleaning the Cabinet
Exterior
Disinfecting the
Interior (cont.)
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