4
PRECAUTIONS
1.
Use filtered air. Avoid grease, oil, or oil vapors, corrosive or reactive gases which will
damage heater.
Note:
When using compressed air a pressure reduction valve and an oil & water separation unit
should be installed to avoid contaminating the heater and reducing heater life.
2.
Operate at safe voltages as shown on the Performance Curves (see page 11). Excess voltage
will cause premature failure. (See Proper Temperature Controller Setup on Page 7 for details.)
3.
Using the Max heater with the recommended MAX panels provides improved performance
and protection from loss of airflow. It is highly recommended that the S1 thermocouple supplied
with the heater be used with a temperature limiting board to protect against low/no airflow
(TUTCO SureHeat Part #074835 – set to 300°F/150°C). (See Page 9 for proper wiring)
• If using other forms of control you must always have sufficient airflow through the
heater before applying power. Otherwise element will overheat very quickly, and
burn out.
4.
If using a process air temperature thermocouple other then the supplied S2 thermocouple it
is highly recommended that the S2 thermocouple be used with a temperature limiting board to
protect against over temperature protection (TUTCO SureHeat Part #F074835 – set to 1205°F
(652°C) for 6 & 10kW units and 1405°F (763°C) for 18, 30 & 36kW units).
5.
If using closed-loop control, use a temperature controller with a fast sampling period (<500ms)
and minimal overshoot.
6.
Sudden applications of power can damage heater. To avoid this:
ALWAYS:
a. Return set-point temperature to ambient (70ºF/20ºC) after use.
b. Use a controlled ramp to set-point. (See Proper Temperature Controller Setup on
Page 7 for details.)
