FULLY-AUTOMATIC ESPRESSO COFFEE MACHINE - Wega

TROUBLESHOOTING - chap.10
Technical manual
10. TROUBLESHOOTING
10.1 Indications on the display
display
GRINDing GR 1 - 2
NOT correct
NO COFFEE GR 1 - 2
1. Groud too coarse
cause remedy
2. Coffee residue around upper piston
head
3. Cam no.2 calibrated
incorrectly
1. There is no coffee in the coffee
hopper
2. Valve on the grinder is closed
3. The coffee chuteis positioned
incorrectly or clogged or
mechanically jammed
4. The piston is stuck in the top position
either because there is a lot of dirt or
because the return spring is faulty
5. Cam no. 1 set incorrectly (the piston
is not released by the drive block)
6. Cam no. 3 set incorrectly (the
electronic system receives the limit
switch signal much too early)
48
english
- Press the key
1. Use the relative knob
on the coffee grinder to
make ground finer
2. Using the provided brush, eliminate the
coffee residues around the (see page 61)
3. Enter programming in “Actuator Test” (see
page 28) and check correct cam calibration
(see Chap. 11)
0. Press the key
1. Refill hopper with coffee beans
2. Open the valve on the coffee grinder hopper
3. Check correct position of the chute. Remove
the coffee chute and remove
all oily residues with hot
water or replace the coffee
chute
4. Remove the unit, remove the
piston, clean and change the
faulty parts (springs, gaskets,
pipes).
5. Check correct setting of cam no. 1
(see Chap. 11)
6. Check correct setting of cam no. 3
(see Chap.11)
7. The grinder does not work (grind) 7. Check the F4 and F7 fuses on the DRIVER card.
Verify proper electrical connection of the grinder
motor