DeDietrich DED700X, Service Manual, Page: 13 / 51

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3.3 Test Mode
Test mode is used to detect failures more easily and thus reduce the time needed to find them.
To enter TEST MODE
To go into “Test mode” switch on the machine, is displayed, within the next five seconds press
the 10-11-10-11 keys in order.
A series of letters and numbers will be displayed on the next page (see “Checking micro-switches in test mode”
table).
Anti-clockwise rotation of the geared motor
Key 1
Check the anti-clockwise rotation of the geared motor and the rise of the coffee group. Check the noise made by the
geared motor.
When the geared motor is in distribution position the figure 1 should display on the top line.
Clockwise rotation of the geared motor
Key 2
Check the clockwise rotation of the geared motor and the descent of the coffee group. Check the noise made by the
geared motor. When the geared motor is on standby the figure 2 should display on the top line.
Coffee grinder operation
Key 3
Check the coffee grinder rotates anti-clockwise. Check the noise made by the coffee grinder.
(keep pressing until the grinder stops automatically). If the grinder motor is running, a reference value for the number of
revs. is shown (approx. 6-12) on the lower right side of the display and the figure 9 starts flashing on the top line.
Water – steam solenoid valve operation
Key 3 + 7
Check that the pump is working correctly and check the noise it makes. During water distribution check that the turbine
is working correctly (the flow in litres/h is shown at the bottom right side of the display)
Water – steam solenoid valve operation
Key 2 + 7
Check that the solenoid valve is working correctly
SELECT FUNCTION
MACHINE READY
Auto-diagnostic