Trebor IQ Chemical Heater - Manual (Page 13)

MODEL IQ CHEMICAL HEATER OPERATION / MAINTENANCE MANUAL PAGE 13

Allow the liquid to run through the system approximately 2 minutes prior to
energizing the heater.
4.3 TEMPERATURE CONTROL
An external control system is required for operating the IQ chemical heater; see
Figure 4-2 for a typical control set up. The system should consist of: temperature
control system, interlock controls (see Section 2.3), and outlet liquid temperature
sensor(s). Operating settings and parameters are to be determined by the user.
The control scheme should be set up to not only control the liquid outlet
temperature but also limit the heater element surface temperature to a maximum
of 250° C (see Section 2.3.b).
The control system should supply a pulse width with a period less than 1 second.
Figure 4-2
4.4 SHUT DOWN
The following procedure should be used to safely shut down the heater:

Cut-off power to the heater.

Allow liquid to pass through the heater for at least 5 minutes or until the outlet
temperature drops below 50°C.
Note: The user is responsible for providing an EMO circuit to interlock their entire
system. This device can also be used to disengage heater power.