MAINTENANCE MANUAL
Speedster
page 36
15.
Connect the electrical connections to the probes: orange is safety level (lower),
white is operating level (upper).
Figure 23. Showing operating level (left) and safety level (right) probes.
16.
Remount the bracket with temperature controller, plug in electric multi connector.
17.
Remount level control unit and element cover. Make sure that the probe wires are
not jammed under the element cover.
18.
Open water mains.
19.
Plug machine into AC outlet.
20.
Switch Speedster “on”, the boiler will start to fill automatically.
21.
Check for proper operation (no power to heating element until safety level is
reached; boiler stops filling when operation level is reached; leakage).
22.
Remount upper body panel first, then side panels.
Check O-ring and spring in progressive pre-infusion cylinder
A progressive pre-infusion cylinder is incorporated in your Speedster to guarantee a
gradual pressure build-up prior to extraction thus allowing for pre-wetting and swelling of
the coffee grounds. At the start of the brewing cycle, the cylinder fills with water until the
piston reaches its maximum position. A rubber O-ring around the piston ensures that no
pressure is lost in the cylinder. After extraction, when the brewing lever is in the upper
position and the group valve is open, the spring pushes the piston back thus expelling
water from the piston. The expelled water flows through the 3-way group valve into the
drain and thus cleans the valve after each extraction.
Over time, the rubber O-ring may harden and crack and the spring could break. When
the O-ring is cracked, water may drip from the visible end of the progressive pre-infusion
cylinder.
Materials needed
Spanner 13 mm
Allen key 3 mm
Screwdriver no.2, small
Retaining ring pliers
Heat resistant, food safe, silicon grease
Loctite or Teflon tape
Procedure
1.
Switch machine “off”.
2.
Remove side panels and upper body panel.
