Operation
Slim Jim Idrocompresso User manual
page 14
Steaming
The Slim Jim has two identical mechanical steam valves that come in two versions
: “twist-knob” (see
).
Before steaming milk it is necessary to open the valve for a short while to purge water from the steam
wand and heat up the wand and valve. The purged water is condensate from steam coming in contact
with the cold tubing, valve and wand. Position the tip of the steam wand over the drip tray when
purging the condensate.
Directly after steaming milk, flush the steam wand with a little steam and clean the tip of the steam
wand with a damp cloth. For hygienic reasons, do not use this cloth for anything other than cleaning
the steam tip.
Twist the valve-knob to open/close and adjust
the steam flow. From fully open to fully closed is
about ½ turn, there is no need to close the valve
firmly.
If the optional foot-operated steam valve is
mounted, do not fully close the mechanical
valve.
Figure 15. Twist knob steam valve.
Move the knob of a flip-flop valve in any
direction to open the valve. The knob will lock
into position when moved far enough from the
central position.
Figure 16. Flip-flop steam valve.
Foot operated steam valve
The twist-knob version of the valve can optionally be equipped (from new but also after-market) with a
foot operated solenoid valve. Although possible, we advise not to install the foot operated steam valve
when the machine has so-called flip-flop steam valves.
When the optional foot operated solenoid valve is mounted, the twist-knob is used to adjust the flow of
the steam only. The solenoid valve is opened and closed by an air-switch that is activated by a
bellows on the floor. Of course, when the mechanical valve is turned close, no steam will flow from the
wand when the solenoid valve is activated.
Note!
It is advised not to decrease the steam power by lowering the steam boiler temperature. A lower boiler
temperature will reduce the amount of steam that can be produced and the temperature of the mix-
water dispensing.
