MAINTENANCE MANUAL
Speedster
page 44
Heat exchanger
23.
Remove the Allen bolt on the heat exchanger with Allen key 5 mm (see figure 31).
This bolt is sealed with Loctite and my need some torque to loosen.
Figure 31. Showing Allen bolt to remove for draining heat exchanger. Some parts in the
machine were removed for clarity. Also shown are the steam boiler safety pressure valve
and the heat exchanger system expansion valve (drain hoses are not mounted).
24.
A little water may flow from the opening. Have a towel or sponge ready to remove
the spills, make sure that no water flows onto the electrical wiring/parts in the
machine.
25.
Tilt the Speedster by lifting the left side, keep machine tilted.
26.
In order to drain the heat exchanger, blow air into the “drain hose” on the coffee
boiler, water will flow from the opening.
27.
When flow is stopped, stop blowing.
28.
Set machine back in horizontal position.
29.
Replace Allen bolt. Use Loctite or a few windings of Teflon tape to ensure sealing.
30.
Close drain valve and remove drain hose from coffee boiler.
31.
Put a little silicone grease on the plug and replace on drain valve, use only little
force to tighten (a spanner is not really necessary).
32.
Replace upper body panel first, then both side panels.
Allen bolt
safety pressure valve
expansion valve