Shellab SMO5HP-2 - Manual (Page 14)

14 | P a g e
OPERATION
O PERATING P RECAUTIONS
Warning : The SMO5HP-2 is not an explosion proof unit! The oven is not designed to safely contain
combustible gasses. Do not place explosive, combustible, or flammable materials into the chamber.
1. The SMO5HP-2 not designed for use in Class I, II, or III locations as defined by the US
National Electric Code.
2. Do not operate the oven in an environment with noxious fumes.
3. Outgassed byproducts maybe hazardous to or noxious for operating personal. If either is
the case, oven exhaust should be positively ventilated to a location outside workspace in
accordance with national and local regulations.
4. Do not place sealed or filled containers in the oven.
5. Do not place mercury thermometers in the oven.
6. The bottom surface of the chamber should not be used as a work surface
Warning : The vent dampers may be hot to the touch. These areas are marked with Hot Surface labels.
Proper PPE should be employed to minimize risk to burn.
Avertissement :Les clapets d'aération peuvent être chauds au toucher. Ces zones sont marqués avec
des étiquettes de Surface chaude. Les EPI approprié devraient être employée pour réduire au minimum
le risque de brûler.
T
HEORY OF
O
PERATIONS
Heating
Operation of the SMO5HP-2 is controlled by a Watlow EZ digital controller through the use of user-
selected temperature set points or user-programed heating profiles. When heating the oven, the
controller users Proportional
– Integrative – Derivative (PID) feedback functions to avoid
overshooting temperature set points and profile levels. The controller does so by gradually
decreasing the amount of power to the heating elements in response to measurements and PID
analysis.
The Watlow controller can store up to four heating profiles, each with ten steps. Please see the
Programed Operations section on page 20, and the Watlow EZ-Zone Profile Programing Guide
for more details.
The heating rates given in this manual’s unit specification section are for a 25°C environment. The
ambient temperature of the workspace around the oven will affect the oven’s heating and cooling
The SMO5HP-2 should be calibrated as required by your production or laboratory protocol, or
regulatory requirements, to verify that it is accurately measuring and displaying the oven chamber
air temperature. If a measurement error (offset) is detected the, display can be calibrated to the
actual temperature by placing the oven in its calibration mode (see page 17.)