USER MANUAL - operation
Slim Jim User manual
page 17
•
Using the “auto off” function will turn the machine to stand-by (ECO or NO HEAT) at a pre-set
time (e.g. at the end of the day). It is especially meant to facilitate the use of the ECO function.
•
Using the “auto on” function will turn the machine to operational temperature at a pre-set time
(e.g. in the morning). When set correctly, the machine will be fully operational the minute the
store opens.
•
The “day off” function will make the pre-programmed ON time skip a weekday.
An automatically set switch can be overridden manually on the machine at any time. After such
interference the timer function will continue to run in the backgroud and will perform the next pre-set
action when it turns up.
Notes!
To have the machine react properly to the timer function instructions the main and circuit switches
must remain in the ON position.
The time and weekday of the controller must also be set correctly. It is advised to check these
regularly (present time and weekday are shown on the ECO-all and NO HEAT windows).
Why switch to ECO …
1. A machine kept at ECO consumes about 20% of the energy of a machine kept at operational
temperature.
Heat loss of the machine is related to the square of the temperature difference between the machine
and its environment. Of course some extra energy is needed to heat up from ECO to operational
temperature. Switching to ECO will therefore lead to 70-75% energy reduction, depending on how
long the machine will be at ECO.
… and not to OFF?
2. A lot of parts in the machine suffer from temperature variations, the more so when these variations
are large.
3. Heating up from ECO (just over 8 minutes) is faster than heating up from room temperature (about
15 minutes).
Figure 12. Graph showing typical heat-up duration normalised at ECO-temperatures. From ECO to
operational temperatures takes just over 8 minutes for both coffee and steam. From 20°C to
operational takes 14 (coffee) and 16 (steam) minutes resp.. Also shown is heat-up with high power
heating element for steam boiler.
Note!
The temperature sensor of the steam-boiler is placed above the water-level for quick response
to steam withdrawal. At temperatures below 110 °C (230 °F) the sensor will not register a change in
(water) temperature quickly. For that reason, the steam-boiler temperature may be up to 6 °C higher
than the ECO-setpoint at the moment you switch from ECO to operational mode.
0
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-8
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-4
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6
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te
m
p
er
a
tu
re
(
°C)
time (minutes)
Typical heat up
times of Slim Jim
steam 6.0kW
steam 4.8kW
coffee
