Nor-Lake General Lab Incubator - Manual (Page 3)

- 3 - 02/12 Rev. B 138691
1. Do not place any explosive, combustible or flammable materials inside the Refrigerated
Incubator.
2. Do not place sealed containers in the Refrigerated Incubators. Sealed containers filled
with materials do not allow for expansion and can develop dangerous vapor pressure as
the temperature increases.
3. Avoid liquid spillage within the chamber.
4. Do not evaporate noxious fumes.
5. Do not store containers filled with acidic or caustic solutions as vapors from these
materials will attack the evaporator and void the warranty.
GENERAL INFORMATION
The Refrigerated Incubator has been designed to provide maximum temperature control. The Incubator
provides dependable and precise performance is obtained through the microprocessor technology in the
temperature control circuitry. The
upright 20 cu. Ft. refrigerated Incubator has an operating range of -10°
C to 50°C. The under counter 6 cu. Ft. refrigerated incubator has an operating range of 5° C to 50°C. This
temperature range will meet a wide variety of applications such as BOD determination, general
incubation and preservation of critical materials. Note: If operating below 2°C for extended periods of
time, the defrost setting should be turned on.
OPERATION
PERFORMANCE DATA
Upright 20 cu. Ft.
Heat-Up Time: From -10°C to 50°C = 120 minutes (Compressor “ON”)
Cool-Down Time: From 50°C to -10°C = 100 minutes
Under counter 6 cu. Ft. Heat-Up Time: From 5°C to 50°C = 60 minutes
Cool-Down Time: From 50°C to 5°C = 60 minutes
Note: The above performance figures are based on the
following operating conditions:
Line Voltage……………………110.5 to 112.5 VAC
Ambient Temperature…………22.5° to 24°C
THEORY OF OPERATION
The refrigeration system, defrost heater and air circulating fan are used in conjunction with the
microprocessor controlled proportioning circuit to achieve very sensitive temperature control. An RTD
(Resistance Temperature Detector) located in the airstream senses any temperature deviation from the
set point and heat is provided proportionally to maintain the required temperature.
The circulating fan provides even air distribution throughout the cabinet interior and ensures
temperature uniformity.
The programmable controller controls the temperature and defrost
settings. The controller, which is located on the facade of the unit, is factory set. Please see the
separate default instructions and explanation of the controls and operation of the controller.
MAINTENANCE