Shellab SRI20PF - Manual (Page 24)

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OPERATION (CONTINUED)
S ILENCING THE D OOR A JAR A LARM
If the door alarm needs to be silenced, close the door, which will reset the timer. For prolonged
periods with the door open, the unit should be switched to the OFF position. If the door alarm
continues to sound when the door is fully closed, the position of the black tab-like door alarm
sensor, mounted on the front left side of the door frame overhang, can be adjusted using a
screwdriver. Loosen the screws just enough to slide the sensor and adjust. Do not remove the
screws.
L
OADING THE
I
NCUBATOR
Place items on the shelves inside the incubator chamber as evenly spaced as possible. Good
spacing allows for maximum air circulation and a higher degree of temperature uniformity.
A
TTACHING EQUIPMENT TO THE
I
NTERIOR
A
CCESSORY
O
UTLET
The incubator has a 1A (maximum) accessory outlet located inside the chamber. The power switch
on the front panel controls power to the accessory outlet. This outlet can power equipment such as
magnetic stirrers, rockers, etc. Do not attach any equipment drawing more than 1A to this outlet.
Accessory equipment may produce additional heat. This heat could affect the temperature range
and uniformity of this incubator. If you are using the interior accessory outlet, you should check that
the incubator operates within required temperatures when the accessory equipment is installed and
operating.
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.