Thermo Scientific Precision Premium PR305040G, Руководство по эксплуатации

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Precision Premium Oven 1-1 Thermo Scientific
Section 1
Introduction
Thermo Scientific Precision 3050 Series premium ovens are available in
three sizes: small, medium and large. All ovens provide PID
Microprocessor control at operating temperatures ranging from 50°C
(122°F) to 275°C (527°F).
The forced air models provide improved temperature uniformity and
control, as well as faster drying. In these models, fresh air enters through
an air intake on the bottom of the oven, then is heated in a plenum below
the chamber. A blower circulates the heated air into the wall plenums and
the oven chamber itself in uniform flow patterns. Exhaust air is vented
through a port at the top of the oven.
Gravity flow models inlet air through a port located under the oven floor.
Heat generated convection then gently moves the air in a vertical
circulation pattern. Exhaust air is vented through a port at the oven top.
Temperature readouts and control parameters are shown on red LEDs.
Three additional LEDs indicate when heater power is being applied, an
error condition is encountered, or the temperature is being set.
The small ovens accommodate a maximum of five shelves. The medium
hold eight shelves, while the large each hold eleven.
Precision ovens incorporate a variety of safety features. A safety backup is
built into the controller software: if the primary heater control fails, the
backup will maintain control at 5°C above the set point. An alarm LED
then indicates that the backup controller is operating the oven. A circuit
breaker protects the oven from power surges. If primary backup heater
controls fail, an independent Over Temperature Device will disengage
heater operation.
The silicon rubber gasket supplied with the oven is good for continuous
use up to 250°C and intermittent use to 275°C. This gasket provides a
better seal than the high temperature gasket and is supplied with the unit.
An optional high temperature braided gasket is available for customers
using the oven frequently above 250°C.