Troubleshooting; Machine Dismantling - Gaggia Deco Tecnichal Service Manual

English

16 - TROUBLESHOOTING

PROBLEM
Machine switch off
No water in boiler
No unit delivery
Steam fails to come out of the nozzle 1. too much water in boiler
Too much water in the boiler
Signs of water leakage on bench
Wet coffee dregs
Coffee dispensing too slow
Coffee dispensing too fast
Coffee delivered cold
Coffee delivered too hot
17- MACHINE
DISMANTLING
The instructions described on the last pages of the manual
must be followed to ensure the machine is dismantled
correctly.
63
CAUSE
1. Mains switch off
2. Machine switch off
3. Incorrect electrical mains connection
1. Mains tap closed
2. Clogged pump filter
3. Motor driven pump not in operation
1. mains tap closed
2. motor driven pump out of order
3. clogged gigleur
4. burnt control box fuse
5. unit solenoid valve out of order
6. unit switch out of order
2. damaged resistance
3. clogged sprayer element
4. resistance saver engaged
1. the motor driven pump remains engaged
2. perforated exchanger
3. automatic charge solenoid valve blocked
1. dirty drain tray
2. drainage pipe clogged or detached
3. other leakage
1. Grinding regulated too fine
2. Unit still cold
3. Solenoid valve fails to discharge
1. grinding element set too fine
2. dirty filter-holder
3. clogged unit
4. gigleur or solenoid valve partially clogged
1. grinder is regulated too large
1. Lime scale present on the exchangers or the
resistances
2. oxidized pressure switch contacts
3. defective electrical connection
4. partially burnt out resistance
1. incorrect pressure switch calibration
REMEDY
1. position the machine switch to position ON
2. position the machine switch to position 1
3. contact specialized personnel in order to
check the connection
1. open the mains tap
2. replace the filter
3. contact specialized personnel
1. open the mains tap
2. contact specialized personnel
3. contact specialized personnel
4. contact specialized personnel
5. contact specialized personnel
6. contact specialized personnel
1. see specific problem
2. contact specialized personnel
3. clean the sprayer element
4. reinsert the resistance
1. contact specialized personnel
2. contact specialized personnel
3. contact specialized personnel
1. clean the try
2. replace the drainage pipe
3. contact specialized personnel
1. Adjust grinding value
2. wait for the machine to reach the correct
temperature
3. contact specialized personnel
1. Adjust the grinder
2. replace the filter and undertake more frequent
filter-holder cleaning
3. contact specialized personnel
4. contact specialized personnel
1. regulate the grinding
1. contact specialized personnel
2. contact specialized personnel
3. contact specialized personnel
4. replace the resistance element
1. regulate the pressure switch by means of the
relative screw (chap. 7.1)