Warning
Do not operate the unit if any of the temperature controls
become inoperative. A hazardous condition will develop which can result
in injury or death and property damage.
s
The high and low limit controls are located on the right front side panel of
the shaker cabinet. The high-limit light is located on the control panel.
Refer to Figure 5-3. The low-limit control and low limit light are available
only on units supplied with optional refrigeration system.
1. Turn ON refrigeration switch located to the left of the defrost timer on
the right rear of the shaker cabinet.
2. Rotate low-limit control fully counterclockwise.
3. Set chamber temperature.
4. Allow sufficient time for chamber temperature to stabilize before
setting the low-limit control.
5. Rotate low-limit control slowly clockwise. When the set point is
reached, low-limit status lamp will illuminate. Rotate the low-limit
control slowly counterclockwise until the low-limit status lamp goes
out.
6. Continue rotating the low-limit control about 5° of rotation to set it
about 1°C to 3°C below the set point, the low-limit status lamp will
extinguish and the temperature control status lamp stays lit.
7. When desired temperature is achieved, load the shaker.
This section applies only to units supplied with this option. The
refrigeration system on the A and E series shakers are identical in
operation. Please refer to Replacement Parts for refrigeration replacement
parts.
Incubated and Refrigerated Shakers 5-9
Thermo Scientific
Section 5
Operation
Setting Low-Limit
Control (Refrigerated)
Optional
Refrigeration System
