Cafina Technical Service Manual This copyright protected manual is intended exclusively for use with machines supplied by Michaelo Espresso Reproduction of any part of this manual is strictly prohibited
Installation Setup / Checklist Installation Setup Page 1 of 2 18” 23” Section 2: Installation/Tools Cafina c60 Service Manual 2 36” Accumulator Tank (optional item - May be provided with the machine) 2-3/8” hole for lines NEMA L630R Drain 16” 11” Water 3/8” compression with shut off Optional Floor Sink 30 Amp, 220 Volt outlet: NEMA L6-30-R Outlet within 6 feet of Cafina 208 Volts minimum at outlet (A booster may need to be installed) Cold water feed line: 3/8” Compression Fitting with Shut Off V
Installation Check list Page 2 of 2 Section 2 : Installation/Tools Cafina c60 Service Manual Check over equipment for shipping damage. Report any damage found to Michaelo: 800-545-2883. Check Incoming Water Pressure. It should be between 45 PSI and 90 PSI, if the incoming pressure is greater than 90 PSI there MUST be a pressure reducer placed in the line. Preferably before the filtration system. Flush Incoming Water Line.
Recommended Tools Recommended tools Page 1 of 1 Section 2: Installation/Tools Cafina c60 Service Manual Wire Brush and Dental Pick 2 Allen Wrenches with long handles 2.5mm, 3mm, 4mm Michaelo recommends Wiha Brand System 6 with 284 series long blades Wihatools.com Open end wrenches 22mm 20mm 14mm 12mm 7mm Small Phillips for ICU board adjustments Standard and Phillips Screwdrivers Michaelo Espresso 3801 Stone Way N.
Section 2 : Installation/Tools Cafina c60 Service Manual Michaelo Espresso 3801 Stone Way N. Seattle, WA 98103 (800) 545-2883 (206) 695-4950 Fax (206) 695-4951 © 2003 Michaelo Espresso, Inc. All rights reserved.
Cafina Service Worksheet Service Call Worksheet Technician: ________________________ Section 3: Service Call Instructions Cafina c60 Service Manual Service Company: ____________________ PO #:_____________________ Upon completion of call, fax this sheet back to Michaelo (206) 695-4951 Date: ____________________ Customer: 3 Machine Serial #: 1. Check condition of Filters: PSI Incoming Pressure Output Pressure PSI 2. Number of shots on hit counter 3.
Filter Reminder Reset Page 1 of 1 Section 3: Service Call Instructions The Cafina filter reminder displays a flashing “filter” message over the drink menu after a preset number of drinks have been run ( 60,000 is the default). Cafina c60 Service Manual Since the reminder needs to be reset with a service key, we recommend resetting the count at every service call and monitoring the filters independently.
Grind Time Check Grind Time Check Page 1 of 1 Section 3: Service Call Instructions The condition of the grinder burrs is monitored by watching the change in grinding time for the reference drinks. The grind time increases as the grinder burrs wear out. Worn burrs take longer to grind the same amount of coffee. Cafina c60 Service Manual 3 The time displayed will always be the time of the last drink made. V3.
Checking Filters, Typical Set-up Page 1 of 1 Section 3: Service Call Instructions Cafina c60 Service Manual Clogged Filters may cause: “no water” reading DP 31 (Boiler slow to fill) DP 11 & 13 (poor flow through coffee) Bypass Valve Should be Closed all the time Incoming Water Pressure Water Pressure to Cafina Flushing Valve Michaelo Espresso 3801 Stone Way N. Seattle, WA 98103 The water pressure to the Cafina will slowly decrease over time as the filters become clogged.
System Test System test No Coffee water flow test Section 3: Service Call Instructions Cafina c60 Service Manual The System Test is used to make sure the water is flowing freely through the machine before running reference or troubleshooting shot time problems 3 MANAGER 1 Key to Manager Position ON OFF daily counter protocol water quantity System coffee quantity Grinding lock buttons 3 1.
Check Water Flow from Brew Valve Page 1 of 1 Section 3: Service Call Instructions Cafina c60 Service Manual Use if the System test is over 8 seconds to isolate the location of the clog Times the water flow from the Brew Valve before it goes to the Piston Remove the Spout Panel Replace the Grounds Drawer Brew Valve Disconnect the line to the bottom of the brew chamber Turn Key to Manager Press shift twice to display System Test Double* start Michaelo Espresso 3801 Stone Way N.
Steam Wand Backflush Steam Wand Backflush Page 1 of 1 A clogged Steam Tip is the most likely cause of weak steam flow. Remove the Steam Tip by unscrewing it from the wand and clean out the holes. Section 3: Service Call Instructions Cafina c60 Service Manual 3 If cleaning the tip doesn’t restore good flow try this cold water backflushing procedure: NEVER leave the steam wand in the milk pitcher. The milk will be sucked up into the wand and may contaminate the boiler.
Section 3: Service Call Instructions Cafina c60 Service Manual Michaelo Espresso 3801 Stone Way N. Seattle, WA 98103 (800) 545-2883 (206) 695-4950 Fax (206) 695-4951 © 2003 Michaelo Espresso, Inc. All rights reserved.
General Service Checklist General Service Checklist Page 1 of 8 Section 4: General Service Cafina c60 Service Manual Check DP codes in Protocol Record codes then Delete when prompted Check grind time for each grinder Run Cleaning Cycle or System Test to empty coffee chamber 4 Run bypass valve in handling to check for clog Remove and clean Bypass Elbow if needed Remove Piston, set aside Move Grinder collars by hand to check for free play Remove Collar and clean threads if hard to turn Clean inside of ma
Remove Panels Page 2 of 8 Section 4: General Service Cafina c60 Service Manual Top Cover • Remove the two 2.5mm Allen screws on either side of the cover. • Lift cover and disconnect grounding wire. Sides • Remove Top Cover • Grasp side panel at front edge, top and middle with fingertips. • Pull sharply out. * To replace: insert rear of side panel into back panel. Snap the front edge into place with the heel of your hand.
Remove Dispensing Spout Panel Remove Dispensing Spout Panel Page 3 of 8 Section 4: General Service Cafina c60 Service Manual 1. Remove Grounds Drawer 2. Remove the 2.5mm Allen screw in the upper left corner 3. Remove Drip Tray Grating 4. Loosen the two 7mm nuts on the underside bottom edge of the panel 4 5. Push Spout to lowest position 6. Swing bottom of panel out of the front of the Drip Tray 7.
Replace Step Motor Cable - see next page Page 4 of 8 Section 4: General Service Cafina c60 Service Manual Replace the Step Motor Cable even if it looks OK. The stress from thousands of cycles can damage the wires even if the outer insulation looks fine. 1 Unplug connector and disconnect cable clamps from Step Motor control Board NOTE: Inspect the new cable. Notice that, although the connectors at each end of the cable are identical, one end has two black jumper wires attached.
Replace Piston Replace Piston Page 5 of 8 Before replacing piston: • Unplug Machine • Remove Top Cover • Remove Dispensing Spout Panel Section 4: General Service Cafina c60 Service Manual 4 1 Raise Piston by turning sprocket counter clockwise 2 Disconnect ribbon cable from top of Step Motor Board 3 Slide Step Motor Board up and out of guides STEP MOTOR BOARD 2 Line Pot Cable PISTON ASSEMBLY 2703036 Ste 4 Unplug power lead from bottom of Step Motor Board 5 Disconnect cable from Step Motor: •
Replace Piston Page 6 of 8 Section 4: General Service Cafina c60 Service Manual 8 Remove 3mm Hex Screw and Lock washer - Use one drop of Locktite when replacing 9 Slide Grounds Chute forward Remove Chute and set aside When replacing, be sure that grinder tunnels are fully inserted into Chute 10 Remove 3mm Hex Screw and Washer 11 Slide Puck Chute forward to release from notch on Piston 12 Pull Puck Chute away from Piston Leave chute sitting loosely in place Grounds Chute 2253089 8 9 11 10 Mich
Replace piston Replace Piston Page 7 of 8 Section 4: General Service 14 15 Unplug Line Pot Cable Loosen clip holding black cable 2.
Clear o-data Page 8 of 8 The O-data is the instructions for how far the step motor moves the piston during a cycle. It needs to be cleared and reset when a new piston is installed or when the step driver board is replaced. Section 4: General Service Cafina c60 Service Manual When the piston bounces at the top or bottom of its travel, it may have lost count of the steps for the step motor. (Check that the Line Pot Cable is connected first.
Reference Calibration Reference Calibration Page 1 of 6 Section 5: Reference Calibration Cafina c60 Service Manual 5 Running Reference Setting the home position of the Grinder Collars. The grind needs to be adjusted for the type of Coffee Beans, Temperature, Water and Humidity at each location. Once set, the cafina will automatically adjust the grinders to maintain the ideal espresso shot This calibration is done after the install is completed.
Adjust Pump Pressure Page 2 of 6 The Pump pressure is measured with all water valves closed. This is different from a conventional espresso machines where the pressure is measured with the water flowing from the grouphead. Section 5: Reference Calibration Cafina c60 Service Manual MANAGER (Service) ON 1 Turn key to Service position OFF 2 Remove left side panel of machine product data The gauge is in a spring holder directly behind the Pump.
Reference Calibration Reference Calibration Page 3 of 6 Section 5: Reference Calibration Cafina c60 Service Manual The technician sets the grind to the type of coffee and the ambient conditions of a specific location. Once the grind is properly set, the machine will self adjust as these conditions change. A separate Reference must be set for regular and decaf drinks.
Reference Calibration Page 4 of 6 Section 5: Reference Calibration Cafina c60 Service Manual ***REFERENCE*** 6 Set Line Pot to 0 (-1 or +1 is OK) Line Pot adjustment is on back of ICU board, behind front panel directly above the keypad buttons. The Line Pot is the tamping pressure sensor on the piston. Double* Double D** 0 Lin. Pot 0 s c60 Line Pot Adjustment 7 Michaelo Espresso 3801 Stone Way N.
Reference Calibration Reference Calibration Page 5 of 6 Section 5: Reference Calibration The Reference time must be set to the desired shot time found on the Data Sheet 8 Cafina c60 Service Manual This is the target time that the machine will use for future self-adjustments Target time 9 5 ***REFERENCE*** Double* 8 Select Next 14.
Reference Calibration Page 6 of 6 2 Section 5: Reference Calibration Cafina c60 Service Manual Select Coarse or Fine to adjust grind to change the Actual Time as needed: Coarse - moves the burrs further apart, and speeds up the actual shot time. ***REFERENCE*** Double* Fine – moves the burrs closer together, and slows down the actual shot time. 14.0s Coarse 5 Fine 20 Adjust 4-5 increments for major change, 1-2 increments for small change.
Screen Message Troubleshooting General Troubleshooting Page 1 of 5 Section 6: Troubleshooting Flashing “Filter” Delete filter counter Cafina c60 Service Manual Flashing “cleaning” “Set Cleaning” counter reached, normally 250 shots.
General Troubleshooting Page 2 of 5 Section 6: Troubleshooting Cafina c60 Service Manual No flow from spout: Coffee leaks inside machine: detached hose to spout DP13: Coffee too fine, clogged tamp (run System test) Output hose kinked or “Y” clogged at back of spout Check grinder adjust motor operation in handling (grind too fine) Check that the pump is running during each shot Screen shows condensation, Buttons may not work Leaking Steam valve. Normal operation will return when display panel dries out.
Extraction Troubleshooting Extraction Troubleshooting Page 3 of 5 Always use the Double or Double D to evaluate the Extraction / shot time Section 6: Troubleshooting Cafina c60 Service Manual Shot time is long Reg or Decafe Run 5 reference drinks to allow machine to self adjust Run reference to reset grinder Check grind time to see if burrs are worn (over 2.
Water Leaks Page 4 of 5 Section 6: Troubleshooting Cafina c60 Service Manual Water on counter: During brew cycle Line from Brew valve to piston Line from tamp to Spout Bleeder screw on top of Tamp Pressing valve not working During cleaning cycle Misaligned Puck Chute Leak from underside of brew chamber – replace piston Water Leaking into drip tray from behind front panel: A small burst of water will normally flow from here at the end of each shot and during the cleaning cycle when the pressure in the
Piston Troubleshooting Piston Troubleshooting Page 5 of 5 Watch the piston during start-up cycle Section 6: Troubleshooting Cafina c60 Service Manual Piston will mot move immediately after piston change Step motor cable installed backwards Black jumpers should be on the Motor side Slider hits or nicks lower edge of Tamp O-data corrupted—clear o-data Piston switch faulty—replace piston Bottom Screen in brewing chamber loose, pushing slider up Cable to Step motor faulty - replace cable Step Motor Faulty (
Clearing a Stuck Puck Page 1 of 2 A stuck puck may show up as one or more of the following codes: DP4 DP5 DP7 DP20&21 DP26&27 DP32 Section 6: Troubleshooting Cafina c60 Service Manual Coffee grounds that fail to eject from the brewing chamber is the most common cause of machine failure. This is usually caused by lack of regular cleaning. The machine will make several attempts to clear the chamber on it’s own by displaying “switch machine OFF and ON” prompts.
Clearing a Stuck Puck Clearing a Stuck Puck Page 2 of 2 Section 6: Troubleshooting It is not necessary to remove the piston from the machine. Cafina c60 Service Manual The Dispensing Spout panel may have to be removed to clean the Electromagnet area.
Check Water Flow from Brew Valve Page 1 of 1 Section 6: Troubleshooting Cafina c60 Service Manual Times the water flow from the Brew Valve before it goes to the Piston Use if the System test is over 8 seconds to isolate the location of the clog Remove the Spout Panel Brew Valve Disconnect the line to the bottom of the brew chamber Turn Key to Manager Press shift twice to display System Test Double* start Michaelo Espresso 3801 Stone Way N.
Flowmeter (System) Test Flowmeter (System) Test Page 1 of 1 No Coffee water flow test Section 6: Troubleshooting Cafina c60 Service Manual The System Test is used to make sure the water is flowing freely through the machine before running reference or troubleshooting shot time problems 6 MANAGER 1 Key to Manager Position ON OFF daily counter protocol water quantity System coffee quantity Grinding lock buttons 3 1.
Steam Wand Backflush Steam Wand Backflush Page 1 of 1 Section 6: Troubleshooting Cafina c60 Service Manual A clogged Steam Tip is the most likely cause of weak steam flow. Remove the Steam Tip by unscrewing it from the wand and clean out the holes. If cleaning the tip doesn’t restore good flow try this cold water backflushing procedure: NEVER leave the steam wand in the milk pitcher. The milk will be sucked up into the wand and may contaminate the boiler.
Grind Time Check Grind Time Check Page 1 of 1 The condition of the grinder burrs is monitored by watching the change in grinding time for the reference drinks. The grind time increases as the grinder burrs wear out. Worn burrs take longer to grind the same amount of coffee. Section 6: Troubleshooting Cafina c60 Service Manual 6 The time displayed will always be the time of the last drink made. V3.
Technician Notes: Page 1 of 1 Section 6: Troubleshooting Cafina c60 Service Manual Michaelo Espresso 3801 Stone Way N. Seattle, WA 98103 (800) 545-2883 (206) 695-4950 Fax (206) 695-4951 © 2003 Michaelo Espresso, Inc. All rights reserved.
Bypass Valve Operation & Test Bypass valve Operation & Test Page 1 of 1 The Bypass Valve delivers hot water from the Brew Boiler directly to the Spout Section 6: Troubleshooting Cafina c60 Service Manual The Bypass amount in Product Data is the amount of time the bypass valve is open. At a 30% setting, the valve opens for the last 30% of the drink flow. The first 70% of the water flows only through the coffee grounds. When the valve is open some of the water can flow directly to the spout.
Technician Notes: Page 1 of 1 Section 6: Troubleshooting Cafina c60 Service Manual Michaelo Espresso 3801 Stone Way N. Seattle, WA 98103 (800) 545-2883 (206) 695-4950 Fax (206) 695-4951 © 2003 Michaelo Espresso, Inc. All rights reserved.
Grinder Adjusting Motor Test Grinder adjusting Motor Page 1 of 1 The grinder adjusting motors change the coarseness of the grind by turning the grinder collar through a worm gear.
Line Pot Test Page 1 of 2 Section 6: Troubleshooting The Line Pot is a potentiometer that sits on top of the Piston Assembly directly over the Tamp. The Line Pot measures the force used to tamp the coffee and the quantity of coffee dosed into the brewing chamber.
Line Pot Test Line Pot Test Page 2 of 2 Section 6: Troubleshooting Cafina c60 Service Manual ***REFERENCE*** 6 Double* Double D** delete 0 line pot -1 c60 s Set Line Pot between -3 & +3 Line Pot adjustment is on back of ICU board, behind the front panel, directly above the keypad buttons (Caution: adjuster is Fragile) Run the Piston all the way down by hand ***REFERENCE*** • Turn the large sprocket clockwise Double* • Turn it hard about 1/4 turn further after Double D** the Tamp touches the
Piston Switch Section 6: Troubleshooting Cafina c60 Service Manual The Piston Switch sets the “home position” of the piston. It also signals if the Tamp is in the brewing chamber. The most common switch failure causes the slider to hit the bottom edge of the Tamp Coffee pucks stuck in the chamber or coffee grounds under the piston assembly will prevent the piston from moving all the way down and may give piston switch DP codes. Piston Switch mechanical test: Tamp 1. Raise piston by hand 2.
Reading DP Codes (Protocol) DP Codes Page 1 of 3 More than 5-10 occurrences of a code will indicate an area of the machine that needs closer evaluation. Section 7: DP Codes (Protocol) Cafina c60 Service Manual The DP codes (diagnostic codes) are a record of faults that the Cafina has recorded since the last service call. It is important to remember that the codes only show symptoms. They don’t always point directly to a problem.
DP Codes Page 2 of 3 7 Read out all the codes in Service/Protocol section Remember the codes only show the symptoms, not the problem DP # Message Given Refill Hopper (See DP 8) DP 01 24V supply Problem Beans jammed Grinder overheated Switch off/ on, check F4 fuse or Replace Power Board DP 03 Piston Switch always Closed Piston not moving up, No 24v on ICU J11 pin 2 with piston up Piston not completely down, Stopped before piston switch Slider jammed Slider hits tamp DP 04 Piston Switch always Open D
DP Codes After fixing problems related to piston movement, the Piston may bounce or move erratically. It may have lost count of the steps for the Step Motor. See Instructions for Clearing O Data to reprogram.
Section 7: DP Codes (Protocol) Cafina c60 Service Manual Michaelo Espresso 3801 Stone Way N. Seattle, WA 98103 (800) 545-2883 (206) 695-4950 Fax (206) 695-4951 © 2003 Michaelo Espresso, Inc. All rights reserved.
Service Mode Service Mode Page 1 of 3 Section 8: Service Mode MANAGER See the next section to access the Service mode without a Service key Cafina c60 Service Manual (Service) ON 3 OFF To skip the startup cycle: Plug the machine back in with the key already in the Service position or Turn key from OFF directly to SERVICE (¾ turn). 8 Any programming changes made in Service Mode will only be saved if the shift button is pressed before turning the key back to ON.
Service Mode Page 2 of 3 Section 8: Service Mode Cafina c60 Service Manual Grinder 2? Used to Factory initialize the machine. Changing will delete all product data TURBO Not used, set to 0 for all locations self-service Set to 0 for all locations SERVICE Enter telephone number to be displayed when service is required next >> next page c60 s Return to Page 1 Turn machine off machine OFF Resets Piston movement instructions. Turn key OFF then ON to complete.
Service Mode Service Mode Page 3 of 3 Section 8: Service Mode Cafina c60 Service Manual EXTERNAL Not used Set to 0 for all locations layout Not used unit Not used enter prices Not used next next page >> c60 s Return to page 1 EXTERNAL A/B/C Not used Set to “A” for all locations language Not used Set to “language for all locations c60 8 Michaelo Espresso 3801 Stone Way N. Seattle, WA 98103 s (800) 545-2883 (206) 695-4950 Fax (206) 695-4951 © 2003 Michaelo Espresso, Inc.
Handling Page 1 of 2 Section 8: Service Mode Cafina c60 Service Manual The Handling section is used to test the operation of individual parts of the machine without having to run complete cycles. MANAGER Key to Service Position (Service) ON OFF product data protocol handling Select handling temperature next >> c60 Michaelo Espresso 3801 Stone Way N.
Handling Handling Page 2 of 2 Section 8: Service Mode Cafina c60 Service Manual piston up Raise Piston piston down Lower Piston (4 sec delay before lowering) slider in Move Slider in (only with Piston raised) slider out Move Slider out next >> next page s c60 Previous page 0 brewing valve 0/1 ON / OFF (only if piston is down) 0 pressing valve 0/1 ON / OFF (only if piston is down) bypass valve 0 0/1 Open Bypass Valve and runs Pump next next page >> s c60 grinder 1/2 grinder Previou
Service Mode Without a Key Page 1 of 1 Section 8: Service Mode Cafina c60 Service Manual MANAGER The SERVICE mode is the unmarked 3 o’clock position of the key switch. Only a #3 technicians service key will turn to this position. (Service) ON #1 3 OFF Use the operators Key to “hot wire” the switch 1 Flip switch circuit board over Switch circuit board in installed position 2 G G 3 1 2 1 3 0 0 Setting the Cafina to the SERVICE Mode without a Service Key 1. Remove the top cover.
Single Double Triple Americano 12 Americano 16 Single D Double D Triple D Americano 12 D Americano 16 D Double D Double Americano 12 1/2 1/3 1/4 1/5 2/1 2/2 2/3 2/4 2/5 4/1 4/3 4/5 Beverage Name 1/1 Button Page/ 57 1 1 1 1 1 1 1 1 1 1 1 1 2 1 2 1 2 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 2 Repetitions 1/2/3 Cups 1 # or Grinder 1 or 2 0 1 1 0 0 0 1 0 0 0 0 1 0 Reference 2 0 0 2 2 2 0 0 2 2 2 0 0 Relieve 0 0 0
Check Drink data Page 1 of 3 The drinks are set by Michaelo Espresso to make best use of the Cafina. Changing them may adversely affect the machine performance.
Check Drink Data Check Drink Data Page 2 of 3 Section 9: Programming Double* Cafina c60 Service Manual 1 or 2 cups 1 Not Used (Caution: do not change) grinder 1 Selects hopper 1 = Right hopper 2 = Left Hopper repetitions 10 next >> Automatically repeats drink if set to more than 1 9 s c60 Screen 1 Sets reference beverage (allows only one per hopper) Backs off tamping pressure halfway through shot 0 = OFF 1 = low 2 = medium 3 = high Improves flow of espresso shots over 100ml water Double*
Check Drink Data Page 3 of 3 Section 9: Programming Cafina c60 Service Manual Sets amount of plain water added at the end of shot to clear spout Double* bypass 1% flow time Opens shot time test page Brews and times one shot Pre-set time is changed only on Run Reference age 14.0s admixture 0s0 foam 0 Not used s c60 Screen 4 Sample Adjusting Screen Tamp Pressure, Coffee and Water Quantities, Bypass amount *WATER QUANT.* Michaelo Espresso 3801 Stone Way N.
Change Drink Names Change Drink names Page 1 of 3 Section 9: Programming Cafina c60 Service Manual WARNING: Making any changes to an existing drink name will delete all Product Data for that drink. 9 MANAGER 1 Turn key to Service position (Service) ON OFF product data protocol handling temperature 0 next >> Press next s c60 2 set cleaning filter product names run reference next Choose product names 0 3 >> c60 Michaelo Espresso 3801 Stone Way N.
Change Drink names Page 2 of 3 Use the first button to cycle through all drink lines and stop on the one that you wish to change. (Drink will be displayed on line 2) Section 9: Programming Cafina c60 Service Manual There are two different ways to add or change a drink name: 1. Use the “search name” buttons to select a pre-programmed drink from the default memory. (Software v3.51 has more usable drinks) “OFF” will produce a blank line on the menu. 2.
Change Drink Names Change Drink Names Page 3 of 3 Section 9: Programming Cafina c60 Service Manual 2.
Section 9: Programming Cafina c60 Service Manual Michaelo Espresso 3801 Stone Way N. Seattle, WA 98103 (800) 545-2883 (206) 695-4950 Fax (206) 695-4951 © 2003 Michaelo Espresso, Inc. All rights reserved.
Change grinder Burrs Change Grinder Burrs Page 1 of 5 Section 10: Maintenance Cafina c60 Service Manual Grinder burrs will typically last for over 50,000 single shots or 800-1000 lbs of coffee. The actual life of the Burrs will depend on the type of coffee used and the operating conditions. (20,000— 30,000 or more on the machine counter is typical) Burrs start out grinding between 1.4 & 1.9 seconds for a Double. They are typically replaced when the Grinding time for a Double reaches 2.5 seconds.
Change Grinder Burrs Page 2 of 5 Section 10: Maintenance Cafina c60 Service Manual Scoop as many beans as possible out of the hoppers using a paper cup do not put your fingers into the grinders! Run drinks from the grinder you are going to change until the screen reads “refill hopper” Unplug the machine Loosen the hopper screws Be careful not to drop a screw into the grinder Unplug the wire connector for the cleaning lid solenoid Remove the hopper and set aside Remove the adjusting motor and set aside M
Change Grinder Burrs Change Grinder Burrs Page 3 of 5 Section 10: Maintenance Cafina c60 Service Manual 10 Remove the Grinder Collar Remove the center bolt from lower burr holder with a 8mm socket. Use a screwdriver to prevent the burr from turning. Set the center bolt aside. Michaelo Espresso 3801 Stone Way N. Seattle, WA 98103 (800) 545-2883 (206) 695-4950 Fax (206) 695-4951 Borrow a 5mm grinder mounting screw to use as a puller to lift the lower plate out.
Change Grinder Burrs Page 4 of 5 Section 10: Maintenance Cafina c60 Service Manual Vacuum the coffee residue from inside the grinder and thoroughly clean the threads with a wire brush Or Push the excess grounds out the chute then wipe the inside clean with a lightly oiled rag Install the new burrs—tighten screws firmly Wipe the threads clean with a rag lightly coated with WD-40 or similar oil Thread the mounting screw through the back of the burr holder to clean out the threads Center bolt Reinstall the
Change Grinder Burrs Change Grinder Burrs Page 5 of 5 Carefully screw collar back on Do not cross thread! The grinder threads are softer than the collar threads Section 10: Maintenance Cafina c60 Service Manual 10 Screw the collar down until burrs touch, then back off 1/4 turn Reinstall Adjusting motors Do not force the screws, the threads strip easily. Switch screws from side to side if one is hard to start. Don‛t use a longer screw! 1/4 Plug the Adjuster back in.
Grind Time Check Page 1 of 1 Section 10: Maintenance Cafina c60 Service Manual The condition of the grinder burrs is monitored by watching the change in grinding time for the reference drinks. The grind time increases as the grinder burrs wear out. Worn burrs take longer to grind the same amount of coffee. The time displayed will always be the time of the last drink made. V3.
Change ICU Board #2703501 Change ICU Board Page 1 of 1 Section 10: Maintenance • Unplug machine • Disconnect all plugs from top of board Cafina c60 Service Manual Press locking tab and pull plugs straight back Gently rock buttons ribbon cable and pull straight up Open locking wings to remove gray ribbon cables • Remove wires from retaining clip on right side Caution: • Remove ground wire Adjusters are fragile.
Flowmeter Service Page 1 of 1 Section 10: Maintenance Cafina c60 Service Manual The fastest and easiest way to service the flow meter is to remove the entire Flowmeter assembly through the rear (non-operator side) of the machine. Only two plumbing fittings need to be disconnected.
Steam Boiler Replacement Steam Boiler Replacement Page 1 of 4 Hot Boiler: Bleed Pressure First Section 10: Maintenance Cafina c60 Service Manual 10 Unplug Machine Disconnect power leads from boiler Plug back in Press water button to bleed pressure Check that steam gauge reads 0 Remove Boiler: Unplug Machine Loosen the 4 Front Panel Screws Shut Off Incoming Water Supply Michaelo Espresso 3801 Stone Way N.
Steam Boiler replacement Page 2 of 4 Section 10: Maintenance 4 Cafina c60 Service Manual Disconnect vent Tube 5 3 Remove Clear Water Line from Adding Valve Disconnect U-Tube to 1.5 bar Safety Relief Valve Remove Tube with Safety attached 6 St ea m Remove Coils from Adding and Steam Valves 7 2 W at er Unscrew delivery tubes from Steam and water valves Leave water tube attached if it is copper 1 Remove Steam Gauge 76 0 0 60 2 Michaelo Espresso 3801 Stone Way N.
Steam Boiler replacement Steam Boiler replacement Page 3 of 4 8 Section 10: Maintenance Remove Steam and Water valves Water valve with Copper delivery tube Should be removed after Boiler is out Cafina c60 Service Manual 10 Steam Adding valve 9 o-ring 2703003 Water Insert silicon tube through top of Boiler and siphon water out Unscrew the water inlet drain any remaining water by quickly inserting the silicon tube into hole Au to fil l 10 11 To Remove Boiler: Remove Bottom Mounting Screws fi
Steam Boiler replacement Page 4 of 4 Section 10: Maintenance Cafina c60 Service Manual Machine may be plugged in for boiler testing before the Piston has been installed TURN KEY TO THE SERVICE POSITION BEFORE PLUGGING IN WITHOUT PISTON Install new boiler: DO NOT CONNECT POWER LEADS TO ELEMENT WITH BOILER EMPTY! Plug machine back in and allow boiler to fill first Michaelo Espresso 3801 Stone Way N.
External Parts External Parts Page 1 of 1 Bean Hopper lid 2253016 Section 11: Parts Cafina c60 Service Manual Complete Bean Hopper 2253151 Cafina Cleaning Tablets ONLY 11 Top Cover with Fan 2253860 Top Cover screw 2303083 Left Side Panel 2253713 Steam wand tube 2603024 Right Side Panel 2253714 Rubber Steam Wand grip 2253380 Back Panel 2253715 Complete spout 2601003 Drip Tray Grating 2253103 Grounds Drawer 2253155 Steam/Water o-ring 2501016 5 Hole Commercial Narrow Cone Tip 2253698 Water wan
Brew Boiler Valves Page 1 of 1 Brew and Bypass valves must always be ordered with Elbows and Nipples Replace delivery lines when replacing valves Section 11: Parts Cafina c60 Service Manual Complete 12 Bar Expansion Valve 2603065 Bypass Line to Spout 2403197 Brew Valve w/coil 2603071 Bypass Valve 2603070 Brew Valve Elbow 2403183 Bypass Elbow .4mm 2403184 Bypass Nipple 2403255 Valve Manifold 2403173 Teflon Brew Valve Lines 2403196 Plunger W/spring 3 Way 2603074 Michaelo Espresso 3801 Stone Way N.
Brew Boiler and Flowmeter Brew Boiler and Flowmeter Page 1 of 1 Rebuilt Brew Boiler 2253659 Section 11: Parts Cafina c60 Service Manual Brew Boiler Temp Probe 2701087 o-ring 2502014 Flowmeter Cable 2703595 11 Screws 2300014 Flowmeter Cap 2701395 Brew Temperature Cable 2703591 O-ring 2500015 Impeller 2700165 Duel Ceramic High Limit Replace if corroded 2703567 Inlet nipple 2403192 Nylon seal 2500059 Outlet nipple 2403182 o-ring 2503004 Copper pipe to boiler 2403193 Flowmeter with cap 2703578 Line Pum
Steam Boiler Valves/Tamp Sealing Valve Page 1 of 2 Steam Valve 113 Section 11: Parts Cafina c60 Service Manual 1 Adding Valve Plunger W/Spring 2 Way 2603073 2 Steam Valve Nipple 2403181 Adding Valve Elbow 2403177 Steam Valve body w/coil 2603056 Steam Plunger 2600056 Longer Spring 2600028 Adding Valve body w/coil 2603070 Adding Valve Nipple 2403178 Water Valve 317 o-ring 2503004 o-ring 2503003 Steam Valve Elbow 2403169 o-ring 2503004 Water Valve Nipple 2403182 Water Plunger 2600021 Short Sprin
Steam Boiler Valves Steam Boiler Valves Page 2 of 2 Rebuilt Steam Boiler 2253662 Section 11: Parts Cafina c60 Service Manual Adding Valve Complete w/ Nipples & coil 2253669 11 Steam Valve Complete w/Nipples & coil 2253674 Teflon Steam/Water Line 2403246 Steam Gauge 2600076 Pipe to Gauge 2403186 Water Valve Complete w/Nipples & coil 2253675 Plunger W/Spring 2 Way 2603073 Autofill Valve Complete as shown 2253668 Autofill Valve body w/coil 2603070 Michaelo Espresso 3801 Stone Way N.
Front Panel Parts Page 1 of 1 Section 11: Parts Cafina c60 Service Manual Display 2703111 Key Switch Cable 2703011 Keypad 2703002 Backlight Plugs into the cable from J39 Key Switch 2703010 Steam Button 2703006 Plug into J10 (800) 545-2883 (206) 695-4950 Fax (206) 695-4951 Operator Key 2703092 © 2003 Michaelo Espresso, Inc. All rights reserved. 82 1 Water Button 2703007 Plug into J6 Manager Key 2703093 2 Front Panel 2253717 Service Key 2703094 3 Michaelo Espresso 3801 Stone Way N.
Boiler Safety Valve System Boiler safety Valves Page 1 of 1 Section 11: Parts Rebuild Parts shown in Italics Steam Boiler vent 2403207 Cafina c60 Service Manual 11 Complete Steam Boiler Safety valve 2603066 2501027 2601062 2500012 2501037 1.
Water Lines/Chutes Page 1 of 1 Section 11: Parts Cafina c60 Service Manual Grounds Chute 2253089 Screw 2300013 Washer 2301062 Puck Chute & Switch Always Together 2253087 2703391 Screw 2300013 Washer 2301062 Complete Spout With backing plate & screws 2601003 Michaelo Espresso 3801 Stone Way N. Seattle, WA 98103 (800) 545-2883 (206) 695-4950 Fax (206) 695-4951 © 2003 Michaelo Espresso, Inc. All rights reserved.
Grinder Parts Grinder Parts Page 1 of 1 Section 11: Parts Complete Grinder 2253665 Cafina c60 Service Manual 11 Grinder Burrs 2250163 (pair) Burr Mounting Screw 2300041 Lower Plate Mounting Screw 2300018 Pin 2301056 Grinder Adjusting Motor 2253096 Lower Plate W/pin 2253021 Screw 2300015 Capacitor with cable 400v 2703306 Michaelo Espresso 3801 Stone Way N.
Pump Page 1 of 1 Section 11: Parts Cafina c60 Service Manual Water Pressure Sensor 2702062 Braided Water Line 2402067 Teflon Washer for water line 2500055 Complete Pumphead Replacement Parts: Pumphead 2253105 Pump Nipples 2403195 Nipple o-rings 2500018 Pump Drive Coupling 2253106 Mounting Ring 2253107 Mounting ring Screw 2300019 Pump Motor 2253647 Michaelo Espresso 3801 Stone Way N.
Sealing Spray Sealing Ring Bleeder Screw Brew Check Valve 12 bar safety Spout Brew Boiler Flow Meter Pump Gauge Bypass DIAM. 0.4 Pump Water Sensor 1.5 bar safety Autofill Steam Boiler Vacuum Break Incoming Water Adding Pressure Stat DIAM. 1.5 Steam Gauge TEA Tea STEAM Steam Section 11: Parts Cafina c60 Service Manual 11 Michaelo Espresso 3801 Stone Way N. Seattle, WA 98103 (800) 545-2883 (206) 695-4950 Fax (206) 695-4951 © 2003 Michaelo Espresso, Inc.
Section 11: Parts Cafina c60 Service Manual Michaelo Espresso 3801 Stone Way N. Seattle, WA 98103 (800) 545-2883 (206) 695-4950 Fax (206) 695-4951 © 2003 Michaelo Espresso, Inc. All rights reserved.
Heating Element Wiring Heating Element Wiring Page 1 of 1 Section 12: Electrical Cafina c60 Service Manual Steam Boiler Element (not field replaceable) 3300 Watts,13 12 High Limit PSTAT ; / / 24v DC Solid State Relay SSR1 #2701220 240v / / 208-240 Volt Supply 25A Michaelo Espresso 3801 Stone Way N.
Valves / Piston wiring Section 12: Electrical +24v DC Cafina c60 Service Manual J45 Valve ground pins will read 24v DC with valve OFF and 0v when valve is on J45 3 7 Y7 Water Valve Y8 Adding Valve Y9 Steam Y10 AutoFill 2 6 10 9 J64 8 4 J46 J46 Piston Plug Socket on Piston 2 Brew Boiler Solid state relay 1 J11 12 Counter 11 3 Cleaning Cover 7 LED 4 8 Plug on ICU Board Bypass Valve Y4 Tamp Sealing Valve Y3 Brew Valve 13 9 15 J44 J43 Y5 10 24v DC test points J47 Michael
ICU Plug Wiring ICU Plug Wiring Section 12: Electrical Keypad Buttons Mylar Ribbon Cable check if buttons don’t work Cafina c60 Service Manual J13 1 Keypad Button Sensitivity Brew Boiler Temp Probe 2701087 o-ring 2502014 12 2 Do not change J13 Line Pot Adjustment 3 Steam Boiler Level Probe 2703028 Autofill Probe / Brew Boiler Temp Sockets on ICU Board J12 J11 Line Pot 8 “Grounds Drawer Missing” reed switch 5 Grey Ribbon Cable to Display 7 Display will be blank or show lines if plug is
Left Grinder Right Grinder Section 12: Electrical Cafina c60 Service Manual Grinder 2 Grinder 1 J35 J34 F2 Relays for Old Style Board: Grinder 2 J35 pin 2 Grinder 2 J35 pin 1 Grinder 1 J34 pin 2 Grinder 1 J34 pin 1 F6 J39 RE1 F7 J31 J49 Transformer Secondary outputs F5 F4 U3 U4 J48 Grinder Adjuster Motors Fuses: F1 trans 3.15A F2 FAN .5A F4 24v dc 6.3A F5 display/ LED 1.25A F6 display 100mA F7 5v dc 1.
Cables Cables Section 12: Electrical Flowmeter/Water Pressure 2703595 J4 on Powerboard Flowmeter Water Pressure Sensor Main Piston Cable 2703597 Piston Plug J47 on Powerboard Puck Switch Grounds Drawer Switch Cafina c60 Service Manual J11 on ICU 12 Brew Temperature/Autofill Probe 2703591 J13 on ICU Brew Boiler Temperature Sensor Autofill Probe Line Pot Cable 2703036 J12 on ICU Line Pot on Piston Steam Boiler Valves 2703598 J45 on Powerboard Brew Boiler Valves 2703599 J46 on Powerboard Steam Valve
