Carbolite R38 User Manual

CONTENTS
R38
U
OUT1
Operating Instructions
Temperature Controller
R38
See also the main manual for the oven or other product to
MC24 - 1.02
R38
U
OUT1
R38 Controller
1. R 38 – DESCRIPTION
1.1. R38 - PID
This is a PID version of the R38 PID controller by Technologic. The PID control produces
pulsed power to the elements. It features simple adjustment of the setpoint, a large display of the current temperature, and an indication of when heating is occurring.
2. OPERATION
2.1. Operating Cycle
The oven is fitted with a combined Supply light and Instrument switch. The light (green) is on
whenever the oven is connected to the supply. The switch cuts off power to the control circuit. If the oven has fan-assisted circulation; the fan is on when the instrument switch is on. Connect the oven to the electrical supply. The Supply light should glow. Operate the instrument switch to activate the temperature controller. The controller becomes
illuminated and goes through a short test cycle. If no process timer is fitter, the controller becomes illuminated and goes through a short test
cycle. If a timer is fitted, the controller may not become illuminated when the oven is switched
on – to start the controller, press the U button on the timer once (see section 3). Adjust the temperature controller - see section 2.2. Process timer option. See section 3 for timer setting and operation. Overtemperature option. If the hydraulic thermostat overtemperature option is fitted, set the
rotary dial to the desired protection temperature. Unless a process timer is fitted, and is off, the oven starts to heat up according to the controller
set point. To turn the oven off, set the Instrument switch to it’s off position; the controller display will go
blank. If the oven is to be left off unattended, isolate it the electrical supply.
2.2. Controller Operation
When switched on, the controller lights up, goes through a short test routine, and then displays
the measured temperature and starts to control. The output light OUT1 indicates when heating is
occurring.
2 MC24 – 1.02
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