Owner manual

16 | P a g e
OPERATION (CONTINUED)
SET THE OVER TEMPERATURE LIMIT
This procedure sets the Over Temperature Limit backup system. This is typically 5°C above the set
point temperature you will be using during your application or process, or 5°C above the hottest
temperature of your heating profile.
Note: If this is the first use of the oven, set the Over Temperature Limit to 325°C or higher to
prepare for the Burn In procedure. This helps ensures the OTL system will not interfere
with the Burn In procedure.
1. Press the green Advance button until “Lh.S1” (Limit High Set Point) shows in the green-
colored mid-level display.
2. Use the Up and Down arrows to enter a temperature limit in the red top display.
3. After entering the temperature limit, press the Advance button. The red display will show
“SAFE”, indicating that the temperature limit has been set.
4. Press the Reset button to scroll the display back to the home page.
SET THE TEMPERATURE CONTROLLER SET POINT
This procedure sets a new temperature set point for the oven.
Note: Set the oven to 125°C if you will be manually running the HEPA Filter Burn-In procedure prior
to its first use (see page 17).This procedure may also be run by programing and launching it
as a heating profile.
1. On the home page, use the Up and Down Arrow keys to adjust the set point in the green
display to your baking application or process temperature set point.
a. Holding down an arrow key will cause the temperature to advance in
increments of ten (10) rather one (1).
2. Release the Arrow Button once you have reached your required set point. There may be
a brief pause before the oven starts heating.
a. A small flashing 2 in the Watlow display indicates when the temperature
controller is calling for heat.
Note: Please see the Quick Start – SHEL LAB Vacuum Oven Basic Video at
http://www.shellab.com/store/virtual-tour-vac-oven.html for a demonstration of how to enter
a temperature set point. The video applies to all ovens with the EZ-Zone Watlow controller.
Note: The Reset Button on the controller of your Watlow is referred to as the Infinite Button in the
video.
End procedure