Tips For Extending Strip Heater Life

by Rebecca Schneider

Heaters from leading manufacturers, such as Watlow or Backer Marathon deliver the benefits of advanced construction techniques. They offer high-temperature, high-watt density capabilities, with sheaths made from corrosion resistant materials. Our top strip heaters include: mineral insulated, mica insulated, ceramic insulated and finned strip heaters for efficient air or surface heating.

Avoid Contamination 

• Contaminants such as oil, plastics, and dirt should not be allowed to collect on heaters, as they will find their way into the heater windings, eventually carbonizing and causing electrical shorts.
• Avoid moisture, moisture can be wicked up by the leads or get into the inside of the heater causing the heater to fail.

Avoid Over Heating

• Do not operate heaters at voltages over what the heater is rated for. 
• Do not expose terminations to higher temperatures than that of what they are rated for. 

Ensure Proper Installation

• When supported by mounting slots, the terminal end should be secured firmly. Opposite end should be slightly loosened to allow for linear expansion.
• The surface being heated must be clean and smooth for efficient heat transfer. Small air gaps caused by imperfections can cause hot spots, resulting in heater failure.
• Ensure terminal posts are not overly tightened.  Posts should be securely fastened but excessive torque could break the connection.

For further installation and maintenance tips visit our Strip Heaters Tech Talk.

Always consult your specific heater manufacturer’s installation and operation manual for best practice and maintenance procedures. All electrical wiring should be done by a qualified electrician.