6 - 1
Section 6 - Specifications
Temperature
Control*
±0.1°C @ +37°C (98.6°F)
Range
0°C (32°F) to +60°C (140°F)
Sensor
RTD
Controller
Digital electronic proportional
Setpoint
Digital
Display
Digital LED
Readability
0.1°C
Setability
0.1°C
Shelves
Standard
3
Dimensions
30.62”W x 25.81”F-B
(77.78 cm x 65.56 cm)
Construction
Solid stainless steel reinforced
Surface Area
5.4 sq. ft. (.51 sq. m) per shelf
Clearance
Adjustable on 2” centers
Loading
35 lbs. (16 Kg) (slide in and out)
50 lbs. (23 Kg) (stationary)
Construction
Volume
11 cu. ft.
Interior
304 2B stainless steel
Exterior
Cold rolled steel
Insulation
2.0” (5.1cm) Foamed urethane
Outer Door Gasket
Four sided vinyl compression
Finish
Powder coated. Salt spray tests
exceed 1000 hrs. per ASTM
Standard B117-85
Weight
Net
300 lbs. (136 Kg)
Shipping
Motor
375 lbs. (170 Kg)
Temperature Alarm
Sensor
Thermostat
Controller
Thermostat
Setpoint
Analog reference dial
Alarm
Audible/visual
Humidity
Control
±5% RH
Range
Above ambient to 95%
Sensor
Bulk polymer
Controller
Electronic, direct set in % RH
Setpoint
Digital
Display
Digital LED
Readability
1.0%
Setability
1.0%
Steam Gen.
Initial fill approx. 1 quart (.95 liters)
*
Better than ±0.5°C uniformity at all other parameters.
Model 3911/3913 _______________________________________________________________________Specifications
a. Checking the Steam Generator Safety
Thermostat Calibration
1. Turn the slotted rheostat shaft of the temperature control
on the back of the steam generator fully clockwise.
2. Remove all tools and cleaning materials from the top of
the incubator. Reconnect power to the unit and turn it
on.
3. Set the RH level to 100% and open the incubator door.
This will cause the heaters in the steam generator to be
continuously energized.
The next step requires working in the
top section of the incubator where
high voltages are present. This should
only be done by qualified persons.
4. Using a clamp-on ammeter, establish that current is
flowing in the blue wire going to the heater connectors.
Refer to Figure 5-2.
5. Proper current is about 3.6 amps. If the current is not
flowing and the humidity indicator is on, rotate the small
slotted screw in the shaft of the safety thermostat coun-
terclockwise, using a jeweler’s screwdriver, until the
current flows to the heaters.
6. Allow the steam generator to operate for about 30 min-
utes continuously. If the heaters cycle off due to the
safety thermostat, rotate the small slotted screw further
counterclockwise to maintain the heater’s operation.
7. After 30 minutes, turn the small slotted screw clockwise
very slowly until the heaters shut off.
8. Turn the slotted screwdriver 1-1/2 turns counterclock-
wise. The thermostat is now properly adjusted.
9. Replace the cabinet top and return the incubator to serv-
ice.
