Service manual

ROYAL 4. FUNCTION/TIMING

Saeco International Group REV.4 SEPT.2003 Page 19/22

3. Timing

The following time chart indicates the functions of the individual components in terms to time (excluding

Royal Classic, see process for Vienna)

Grin de r mo tor

Dose r

He ating app . 1 .5 min

Pump *

Gear motor

down

au f

a b

Statu s

Note : * O nly in ma chin es w ith pre-b rew ing sy stem s

app.5.5se c

dependi ng on coffe e qty

Hea tin g stag e Coffee disp ensin g p roce ssStandb y

down

Explanation:

Two processes start when the main switch is activated:

Firstly, the gearmotor is initialised. The gears move to MS1 (lower limit switch), change rotating direction,

leave MS1 and move to the home position (about 2 mm after MS1). Exception: Royal Classic – process as

for Vienna (moves to brewing position and back / see Vienna).

The instantaneous water heater is then activated for about 1 min 30 sec., heating the water to operating

temperature, whereby heating takes place for about 60 sec. continuously and then is alternated for the rest of

the time.

After activating the start button:

1. The grinder starts operating (about 5.5 sec.).

2. The doser is activated twice.

3. The gears move to brewing position.

4. Depending on the type of machine, pre-brewing begins (brief pump activation).

5. Main brewing process (duration of pump activation depending on selected coffee quantity).

6. The gears move to home position (dregs are discarded).

Note:

If the machine is disconnected from the main power supply during operation (power failure/side doors

opened), the gears will complete the function commenced but without brewing (if the interruption occurs

before brewing, the coffee will be dispensed dry).

If operation is interrupted by removal of the dregs drawer, the machine will continue its function

unrestricted once the drawer is returned.