Unic Stella di Caffe - Troubleshooting; Replacing a Faulty Control Box; Replacing the BTA Control Box; Replacing the BGX;BST Control Box

71
 Troubleshooting
VERY IMPORTANT
Before starting any action check that all the settings are correct
- Temperature 120 °C – steam pressure 0.9 to 1 bar (14PSI)
- Infusion pressure 9 to 10 bar (140 PSI)
- The HP valve opens for values over 13 bar (188PSI)
- Supply pressure: 0 to 6 bar (0 to 90 PSI)
- If the machine use water in a tank, check the tank level and the cleanliness of the foot valve
/strainer if one is fitted
PRECAUTIONS TO BE TAKEN
- Switch the machine off and disconnect the electricity supply before doing any work on the electrical
circuits
- Cool the machine and release the pressure using the cooling programme (see page 74) before
doing any work on the hydraulic circuit
 Replacing a faulty control box:
Replacing the BTA control box
When replacing a BTA control box you should:
- Replace the faulty control box by a new one
- Perform an update on the BTA with a USB+ dongle
Replacing the BGX /BST control box (Part no: 45100, 45101, 45102, 45103, 45104 or 45105)
When replacing a BGX or BST control box you should:
- Replace the faulty control box by a new one
- Perform the assignment process of the new control box (see control box assignment heading)
- Perform an update on the BGXs with a black USB dongle