15.) CONTROL SYSTEM OPERATION
The temperature control system controls the amount of power to the resistive
heating elements in order to achieve and maintain the desired temperature as
measured through the control thermocouple.
The temperature control system consists of the following:
1.
Setpoint temperature controller
2.
Solid state power controller or mechanical contactor
3.
Matching control thermocouple
Heat/cool control systems provide heating control to the unit in addition to cooling
control.
Additional optional features include:
1.
Over-temperature controller
2.
SSRS
INSTALLATION
1.
Position control cabinet in the desired location making sure it is
permanently secured. NOTE: Do not position controller in such a manner
as to be difficult to operate disconnect.
2.
Study all instrument manuals before energizing the control system and
oven.
3.
Review all electrical wiring diagrams.
4.
Make all external wire connections specified in the electrical wiring
diagrams including connection of the cables between the oven and the
control console. All conduit supplied shall be permanently secured /
mounted during the installation process. CAUTION: Control system must
be grounded according to local wiring requirements.
5.
Connect the thermocouple to the control system.
6.
Close main circuit breaker or disconnect switch.
7.
Turn on main power.
8.
Check red and green indicating lights on control cabinet and temperature
controller for control power indication.
9.
Set temperature controller and over temperature controller to desired
temperature setting. (Check instrument control manuals for fine-tuning).
10. Turn on control cabinet power. The oven will continue to heat until the
controller setpoint is reached. The controller will start cycling to maintain
selected setpoint
