MAINTENANCE MANUAL
Speedster
page 39
Replace all solenoid valves
To be sure that the solenoid valves inside your Speedster keep operating properly, it is
advised that you replace them every 5 years. The electrical coil outside, and spring and
rubber sealing inside, the valve are prone to wear and tear.
Materials needed
Allen key 3 mm
Spanner 13 mm, 14 mm, (24 mm)
Phillips screw driver no.1, no.2
Replacement flange valves (3x brass, 1x stainless steel or )
Replacement locking washer M4, 16x (or 12x)
Figure 26. Showing the Speedster from above with side and upper panels removed.
Location of solenoid valves as indicated. Note that group valve is stainless steel 3-way
flange valve; older machines (before serial number 148
****
) have different 3-way group
valves.
Procedure for flange valves
1.
Close water mains.
2.
Remove filter holder.
3.
Relieve pressure from coffee boiler by shifting brewing lever to middle position
until water stops flowing from group.
4.
Relieve pressure from hot water/steam boiler by opening steam valve until steam
flow stops.
5.
Switch machine “off”.
6.
Remove both side panels and upper body panel.
7.
Remove screw from electrical plug with Phillips screw driver no. 1 (see figure 27).
(Turn the group valve coil and plug such that you can reach the screw, if
necessary loosen the flat nut on top of the coil a little with spanner 14 mm.)
group valve
cold water valve
hot water valve
boiler fill valve