Shellab SRI20-2 - Manual (Page 9)

9
MAINTENANCE
The design of the chamber is such that periodic maintenance is kept to a minimum. NO lubrication or
adjustments of components is needed. If the incubator is used frequently at temperatures below ambient
room temperature or in any manner that increases moisture build-up within the chamber, a frequent
defrosting schedule is recommended.
6.1 Defrosting: Frost can appear inside the unit due to moisture accumulating and condensing on
the coldest surface. The unit should be defrosted and cleaned on a regular basis. The unit can
be defrosted either manually or automatically. The water drains from the chamber into a
evaporate pan. Make sure to completely dry out the interior and evaporate tray in the bottom of
the body when defrosting is complete.
A. Manual Defrost: Turn the unit off, open the door and allow the frost to melt. Then clean
the chamber following the directions in 6.2.
B. Automatic Defrost: The automatic defrost switch is located on the back of the unit in the
top right corner. It is an ON/OFF switch. In the ON position, the frost sensor is activated
once every twelve (12) hours. If the sensor detects frost, the compressor is shut down until
the frost has melted, and the compressor is reactivated. The amount of time the
compressor is shut down is roughly one-half hour. During this time, the temperature in the
chamber will spike and the Main temperature Controller will cycle off, shutting down the
heating element. When the compressor is reactivated, the temperature will stabilize at set
point.
6.2 Cleaning: Clean the incubator with a mild soap and water solution, rinse clean with water and
wipe dry with a soft cloth.
6.3 Disinfecting: Disinfect the incubator on a regular basis. Remove all of the interior parts and
clean thoroughly, including all corners using a suitable disinfectant that is appropriate for your
application. DO NOT use spray cleaners that might leak through openings and cracks and get on
electrical components, or that may contain solvents that will harm the coatings. DO NOT use
abrasives of any kind as they will damage the interior. Special care should be taken when
cleaning around sensing heads to prevent damage and around the door gasket so as not to
impair the positive seal.
WARNING: Never clean the unit with alcohol or flammable cleaners with the unit connected to
the electrical supply. Always disconnect the unit from the electrical service when cleaning and
assure all volatile or flammable cleaners are evaporated and dry before reattaching the unit to the
power supply.
6.4 Compressor Compartment: Located at the back and bottom of the unit, the compressor
compartment can collect dust which will inhibit proper airflow. This compartment should be
vacuumed out at least once every six (6) months to ensure maximum efficiency. Note that the
unit must be disconnected from the power supply during this procedure.
6.5 Electrical Components: There is NO maintenance to electrical components such as
Temperature Controllers and Probes. If the incubator fails to operate properly, read the
Troubleshooting guide prior to contacting Customer Service. If service is required, access to all
electrical components is available by removing the panel cover at the top rear of the unit.
Temperature Controllers are accessible from behind the control panel. Main Temperature Probe
is located on the interior chamber back. Thermostat Probe is located in the element chamber. If
the Low Limit Temperature Thermostat needs adjustment, contact the factory for assistance.
Section
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