INTRODUCTION
Speedster page 4
Welcome
Thank you for ordering a Speedster espresso machine from Kees van der Westen
Espressonistic Works B.V. The Speedster is a professional one group machine which is
hand built and individually tested at our shop in Waalre, the Netherlands.
Standard shipment includes an external water pump with electrical motor, water
softener, 3 high pressure water supply lines and several accessories. The frame, body
and both boilers are made from high grade stainless steel (group and boiler: grade
316L).
The Speedster functions according to the so-called double boiler system in which there
are separate boilers for both coffee water and for steam/hot water supply. This system
allows for very accurate temperature stability of espresso and steam/hot water, also with
large quantities over long periods. The coffee boiler is equipped with a PID
-regulator
which is a very user friendly device ensuring near perfect temperature stability.
An in-house developed pre-infusion system is incorporated within the Speedster. A “soft-
start” mechanism (progressive pre-infusion cylinder) absorbs pump pressure such that it
increases gradually to 3 Bar which ensures pre-wetting and swelling of the coffee grinds
before extraction starts. The 3-way group operation lever with positions “off”, “pre-
infusion” and “pump active” gives the barista total control over the pre-infusion phase by
increasing the pre-infusion time as desired. The combination of these techniques
guarantees that the delicate coffee flavours can fully develop and conveyed to the cup
during extraction which results in more taste and aroma.
Both the steam boiler and the coffee boiler are equipped with an individual electronic
safety shut-down system which interrupts the power to the heating elements. An
expansion valve in the coffee water system is adjusted to 10-12 Bar at our workshop and
a safety valve of 3 Bar in the steam boiler ensure that the pressures in the Speedster
cannot exceed safety values.
Notice
Filled with water, the Speedster espresso machine has a mass of approximately 45 kg
(100 lbs), produces heat and measures approximately 50x60x40 cm (width x depth x
height; 20x24x16 inch). To properly operate the Speedster a sturdy platform with a fully
horizontal surface is essential while space is needed above and to the sides of the
machine for coffee grinder, knock-box, tamper and other accessories. The pump and
water softener should be placed in the proximity of the machine and water supply and
discharge, as well as an AC socket with earth connection (minimum rating 3100 Watt =
13.5 Amp at 230 Volt) is needed for installation (see also “Technical specifications –
Electricity”). The location of your Speedster should account for these.
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