What do I check for an E7 alarm on a Media?

The following document is to be used by a certified electrician or technician only.

Locate the inverter (component that controls the speed of the heat tunnel conveyor) inside the electrical drawer.

What does the inverter’s display show; RDY, SCF or other?

What is the input voltage at the inverter? (voltage allowance is 208v +/- 10%. Too high of voltage causes the inverter to malfunction and error E7.)

Remove the heat tunnel conveyor motor from the shaft..

Pull on the rollers check if the rollers and chain assembly moves freely.

If not, then the chain and roller assembly is bound and error E7 can happen.

Turn on the power and check if motor turns.

If not check if there is power going to the motor.

If there is power but motor does not turn, motor or gear is bad.

Turn off machine and split the motor from the gear box.

Turn on power again and check if motor turns.

If motor does not turn, then motor is bad.

Check the gear box if it can easily be turned manually.

If not, gear box is bad.

Does the heat tunnel fan motor M1 turn if contactor KM3 is pressed?

If yes, the motor is good.

If no check power going to the motor, If there is power then motor is bad. (Bad/burnt motor causes error E7.)

Our advice is stricly limited to the question(s) asked and is based on the information provided to us. Minipack does not assume any responsibility or liability for the advice given and shall not be liable for any direct, indirect, special, incidental or consequential damages in connection with the use of this information.

Minipack does not assume any responsibility or liability for the advice given and shall not be liable for any direct, indirect, special, incidental or consequential damages in connection with the use of this information.