USER MANUAL - operation
Slim Jim User manual
page 19
Figure 13. 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 quickly register a change
in (water) temperature. 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.
Pump-pressure
Check
Check the pump-pressure when an actual brew is at the infusion stage; i.e. the approximately stable
high pressure reached during a brew. Make sure that only a single group is active during this check as
multiple “users” will result in a somewhat lower pump-pressure.
Do not use the mix-water during this check as that will also result in some pressure loss.
Check all groups available and compare the results. The pump-pressure at the different groups should
be identical as there is only one pump used for the entire machine.
Notes!
A small divergency (<0.2 bar) between the groups can be the result of deviations between pressure
gauges and is no cause for alarm.
A large divergency may indicate a malfunction but can also be the result of different coffee-bed
preparation. Redo the check and have a technician solve the problem when the divergency persists.
0
10
20
30
40
50
60
70
80
90
100
110
120
130
-8
-6
-4
-2
0
2
4
6
8
10
te
m
p
er
a
tu
re
(
°C)
time (minutes)
Typical heat up
times of Slim Jim
steam 6.0kW
steam 4.8kW
coffee
