This article aims to address the issue of the tube not firing and is suitable for the following models:

✅ CO₂ Pronto Series

Depending on the status of your machine, it may take approximately 10 to 20 minutes to complete the process.

Steps to Take

Verify in sequence:

​​1. Wall socket energized?​​ ➡️ Test with a voltage tester or lamp.

​​2. ​Power cord fully seated?​​➡️ Check both ends for a secure connection.

​​3. Emergency stop released?​​ ➡️ Rotate clockwise until the emergency stop is released ⬆️.

4. Main power switch turned on? ➡️ After switching on, you should hear the contactor inside the machine chassis engage (as shown in the image).

4.1 Contactor engages normally, but the machine's internal lights are off ➡️ Measure the input voltage of the switching power supply (see the bottom-left figure). The normal voltage should be 220–240 V AC.

• If the voltage is normal, replace the switching power supply.

• If the voltage is abnormal, check whether the filter (see the bottom-right figure) has output.

  • If the filter has no output, replace the filter.

  • If the filter output is normal, check the wiring between the filter and the switching power supply.

    

4.2 The contactor fails to engage ➡️ Measure the contactor's input voltage.

• If the voltage is normal, the contactor needs to be replaced.

• If the voltage is 0, check whether the air switch inside the machine is turned on.

  If it is already on, use a test pen to sequentially check the circuit for disconnections between the rear socket, main power switch, emergency stop switch, and air switch.