Shellab SRI20P - Manual (Page 21)

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21 | P a g e
OPERATION (CONTINUED)
H UMIDIFYING THE I NCUBATOR
Placing only a small number of petri dishes or open media containers in the incubator chamber may lead
to excessive drying of sample media. Unusually dry environmental conditions may also contribute to
sample drying. To counteract this, Sheldon Manufacturing offers an optional humidity collection pan and
tubing accessory kit: Part Number 9900708. The kit redirects moisture that normally condenses on the
heat sink fins of the Peltier TEC heating and cooling device, and uses it to humidify the incubator. After
ordering and receiving the kit, place the stainless steel pan on the lowest chamber surface. Connect the
tubing that comes with the kit to the port on the back of the Peltier duct cover. Run the tubing down the
back of the incubator behind the shelves, and secure the end of the tubing inside the pan. The pan is
supplied with a copper slug to help prevent microbial contamination.
The humidifying kit is intended for use while running small loads. High workspace ambient humidity, or
applications that generate high levels of humidity, may result in excessive condensation on the Peltier
TEC unit. Overloading the unit with culture media can also generate excessive humidity from sample
media evaporation and blocking air flow pathways through the shelf space. Water dripping from the
Peltier duct cover at the top of the chamber onto the shelf space and floor is symptomatic of excessive
chamber humidity, and may damage the incubator.