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Summary of Contents for Kees van der Westen Slim Mirage
- Page 1 User manual Slim Jim Idrocompresso espresso machines (Original instructions) Document ID: Sup-JIum-Eng Date of issue: May 31, 2022 Revision date: Slim Jim User manual page 0...
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Page 2: Table Of Contents
CONTENT Designation ............................2 Precaution .............................. 2 Safe operation ............................2 Water Quality ............................3 Water mains pressure ........................... 4 Parts identification ..........................5 Bar height ............................... 6 Operational features ..........................7 MAIN switch ............................7 HEAT switches ............................ 7 Circuit breakers ........................... -
Page 3: Designation
This manual applies to the Slim Jim 2-group (Duette) and 3-group (Triplette) espresso machines with Idrocompresso operation manufactured by Kees van der Westen Espressonistic Works B.V. A separate rotational pump with electric motor and adjustable pressure reducer can be part of the appliance. -
Page 4: Water Quality
Introduction Water Quality Have a water treatment system installed and its function checked regularly. The treatment system should at least have a carbon block that not only traps drug-remnants, Chlorine and organic compounds but also prevents rigid particles >30 μm to enter the pump. Optimally, the water fed into the espresso machine would fall in the higher part of the SCA “core zone”, see Figure 1, and have a pH of 7.0-7.5 (at 25°C). -
Page 5: Water Mains Pressure
Introduction Water mains pressure For best performance, the Idrocompresso requires that water supply pressure at the machine is constant at a setting within the range 3.0 - 4.0 bar. Since some pressure is lost within a water treatment system, water mains pressure should be a little higher than 3-4 bar. The optimum water pressure will depend on the characteristics of the prepared coffee-bed and should be established experimentally (see page 23). -
Page 6: Parts Identification
WELCOME Parts identification Figure 3. Showing the main operational parts of the Slim Jim Duette Idrocompresso version with fat- tube legs. The Slim Jim Triplette has three groups but its functions are identical to the Duette. 1. Right hand group 3-digit display (shot-timer and/or temperature) 2. -
Page 7: Bar Height
Introduction Bar height It requires force to pull the lever. For easiest operation it is advised to have the centre of the handle at approximately the same height of the operators’ eyes. Ideal bar height thus depends on average length of the operators and type of machine legs. 175 cm 85 cm Figure 4. -
Page 8: Operational Features
Operational features MAIN switch Notes! The machine will re-start over and over again when the capacitive screen is touched during start-up. Dirt and remnants of detergent may unexpectedly activate the capacitive screen. If the machine does not start up properly, clean the surface of the capacitive screen with plain water and a soft cloth. The main switch (see Figure 7) is located at the right hand side of the machine and has 2 positions:... -
Page 9: Brew-Lever Mechanism
Operation Brew-lever mechanism Pulling the brew-lever towards you activates valves, lifts a piston and shortens a spring. The brew- lever will lock into position when maximum upward-travel of the piston is reached. When the brew- lever is very close to the locking position, a valve is opened such that water can flow into the cylinder and pre-infusion starts under incoming water pressure. -
Page 10: Flush/Relief Unit
Operation Flush/relief unit The function of the flush/relief handle depends on the position of the brew lever: flush/relief handle flush If the brew lever is in resting position (up) pressing the handle shortly will temporarily activate 2 valves (and engage the optional pump), resulting in a flush of adjustable amount of seconds. -
Page 11: Adjust Resting Spring Length To Match Groups
Operation Adjust resting spring length to match groups Every spring that comes from the manufacturer has some tolerance in its force-displacement trajectory. To even out differences between springs and thus brew-pressure profiles between groups, the “resting” length of the spring can be adjusted by approximately 10mm. On a new machine, spring force will be matched. - Page 12 Operation 2. Adjust initial spring length. a. Make sure that the brew-lever is in resting (upper) position. b. Insert one special tool on one side of the adjustment ring (see arrow in Figure 10), the other tool on the opposite side. c.
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Page 13: Temperature Display
Operation Temperature display Each boiler is equipped with its own temperature controlling system. Measured temperature values can be displayed 2-ways: on the control panel and on the large 3-digit displays underneath each group (see Figure 11). In the barista menu, the temperature unit can be switched from °C to °F. On control panel The operational window of the CONTROL PANEL will show the temperatures of all coffee boilers and the steam boiler and will continue to do so during a shot such that information about temperature is... -
Page 14: Pressure Gauge
Operation Pressure gauge While brewing a real shot the coffee-bed becomes less permeable during wetting (pre-infusion stage) and pressure will rise to water mains pressure (or pressure reducer setting) while the brew-lever remains locked. Immediately after unlocking the pressure will increase to (ideally) 9 bar after which it will slowly decrease during the brew. -
Page 15: Steaming
Operation Steaming The Slim Jim has two identical mechanical steam valves that come in two versions: “twist-knob” (see 15) and “flip-flop” (see Figure Figure 16). 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. -
Page 16: Control Panel
Operation Control panel Note! Remnants of detergent may unexpectedly activate the capacitive screen. For that reason you should use plain (warm) water and a soft cloth only to clean the plastic front panel. The control panel of the Triplette and Duette are very similar and have a 5-“button” capacitive touch screen. -
Page 17: Go To Stand-By
MODE touch touch “NO HEAT”: the THURSDAY 13 : 57 NO HEAT KEES VAN DER WESTEN no-heat window machine will cool TECH. ASSISTANCE SLIM JIM down “ECO”: the machine THURSDAY 13 : 57 KEES VAN DER WESTEN... -
Page 18: Sensor Malfunction
Operation Sensor malfunction Boiler sensors For each boiler sensor, the corresponding area in the display, as well as the 3-digit display, will show O.C. (open circuit, infinite resistance) or C.C. (closed circuit, electric short) if there is a sensor malfunction. When a sensor malfunction is shown for a boiler, the heating of that boiler is dis-engaged. The machine will remain functional on the other boilers. -
Page 19: Technical Assistance
The exit button will return to “NO HEAT” or “ECO MODE”, whatever the earlier setting was. “NO HEAT”: the THURSDAY 13 : 57 NO HEAT KEES VAN DER WESTEN no-heat window machine will cool TECH. ASSISTANCE SLIM JIM down “ECO”: the machine... -
Page 20: Use (Optional) External Temperature Sensor
Operation Use (optional) external temperature sensor An external NTC-sensor can be plugged into the bottom of the electrics tray (see Figure 29, page 35). The temperature of the external sensor can be shown on the control panel instead of the steam boiler temperature. -
Page 21: Change Settings In The Barista Menu
Operation Change settings in the Barista menu You have to leave the operational window of the controller and choose the correct parameter-set (in the settings window) to change individual settings. GROUP 1 GROUP 2 GROUP 3 STEAM MENU operational window 93.4 45.6 93.2... -
Page 22: Sub-Menu Water Timer
Operation Sub-menu WATER TIMER In the sub-menu water timer you can adjust the following: parameter range factory increment unit remark water dispense 0.5 .. 15 pump on-time Gr1 can be set per individual group pump on-time Gr2 5 .. 59 pump on-time Gr3 not in Duette flush time... -
Page 23: Why Switch To Eco
Operation Why switch to ECO … 1. A not-used machine kept at ECO consumes about 20% of the energy of a not-used 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. -
Page 24: Water Supply Pressure-Reducer Setting
Operation Water supply pressure-reducer setting Adjust The set-up may include an optional pump but will always incorporate a pressure-reducer in the feed- line to the machine, initially set to appr. 3.0 bar (45 psi). After getting used to the machine you may want to adjust this setting. -
Page 25: Machine Cool-Down
Operation Machine cool-down As the steam boiler is isolated, the temperature in the steam boiler will drop very slowly when heating is turned off and the machine is otherwise untouched. It will take about 3.5 hrs to cool down to its ECO temperature of 70°C. -
Page 26: Daily To Weekly Maintenance
Daily to weekly maintenance Use hot water from the machine Even the best treated water will lead to scale deposition in the steam boiler when the steam boiler is predominantly used to steam milk. If the hot water-tap on the espresso machine is hardly ever used get into the habit of doing your daily clean-up up with mix-water drawn from the espresso-machine instead of from the buildings hot-water supply. - Page 27 Daily and weekly routine Remove and clean filter basket Procedure 1. Remove the filter holder from the group and pry the filter basket out (see Figure 21). 2. Remove the filter basket from the filter holder and clean the filter basket with a little washing up liquid and plastic scouring pad or firm brush.
- Page 28 Daily and weekly routine 9. Lock filter holder in group, pull the brew-lever into locking position, unlock when pressure no longer rises (appr. 3.5 bar): pressure will quickly rise to appr. 9 bar. Keep away from the reach of the brew-lever, then relief pressure (with handle); the brew-lever will return to resting position quickly.
- Page 29 Daily and weekly routine Clean group screen, check and replace group seal The group screen helps to disperse the incoming hot water onto the coffee bed and also prevents coffee particles entering the group. The black group seal will remain flexible for a long time but will harden eventually. We advise to check the group seal regularly and replace when it hardens or shows cracks.
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Page 30: Lubricate And Replace Piston Rings
Daily and weekly routine Lubricate and replace piston rings The V-rings on the piston are susceptible to wear and need lubrication and/or replacement every once in a while. If the lever starts to show increased stop-motion behaviour during a shot you should plan to lubricate the V-rings. - Page 31 Daily and weekly routine M8x20 Figure 24. The piston taken apart. Normally the group head, piston-rod, spring and piston remain assembled. some extra grease grease Figure 25. Lightly grease the V-rings and put some extra grease in between the top 2 V-rings. 6.
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Page 32: Clean Group Dispersion Set
Daily and weekly routine Clean group dispersion set The group dispersion set ensures uniform wetting of the coffee bed. When dirty, the wetting will become less uniform. As the dispersion plate and base are made of plastic material, which is heat neutral, no oils and fats will bake on easily and plate and base will remain clean for quite long. -
Page 33: Replace Dispersion Base And Plate
Daily and weekly routine Replace dispersion base and plate The dispersion base and plate are sold as a set only (with new screws) as both parts deteriorate simultaneously. The protrusion on the dispersion base easily breaks off when the plastic material is affected (by cleaning powder). -
Page 34: Check Machine Condition, Report Malfunctions
Check machine condition, report malfunctions It will help the service technician solving problems if some information about the machine is known before a house-call is scheduled. This information should include: 1. serial number of the machine 2. free flow rate of each individual group 3. -
Page 35: Check Pressure Gauges
Check machine condition Check pressure gauges 1. No pressure: when not brewing, the needles on all gauges should be in “resting position” (indicating close to 0 bar). 2. Identical pressure: with a blind filter in all groups of a cold machine and brew-levers in locked (down) position, the gauges should display identical pressures (line pressure). -
Page 36: External Temperature Probe (Option)
Check machine condition External temperature probe (option) heating element indicator lights (---------steam---------) (---------coffee---------) external NTC Figure 29. Showing the heating element indicator lights (Triplette) and connection for an external NTC- probe on the bottom of the electrics tray. Compare to Figure If you have the optional external probe, plug into the machine and set the interface to show its temperature (see page 19) to check individual temperatures of brews and/or hot water. -
Page 37: Recommended Maintenance And Service Scheme
Recommended maintenance and service scheme Daily maintenance • Clean steam wand (see page 25) • Back flush groups (see page 26) • Clean filter holder (see page 26) • Clean drip tray Weekly maintenance • Clean group screen (see page 27) •... -
Page 38: Service Record
Preventative maintenance and service Service Record (machine number: __________________ , installation date:_________________________________ ) Date Technician Task Comments first installation water treatment system: pressure reducer setting: Slim Jim Idrocompresso User manual page 37... - Page 39 Preventative maintenance and service Slim Jim Idrocompresso User manual page 38...
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Page 40: Contact Information
When seeking contact with the e-mail address above, please forward the model and serial number of the machine in question. Contact information Kees van der Westen Espressonistic Works B.V. Van Elderenlaan 6 5581WJ WAALRE The Netherlands Telephone +31 40 2223433 Email support@keesvanderwesten.com...
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