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Franke La Marzocco FB-70, Training Manual

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5. Electrical System

Safety

*  

Always

 ensure power is off at the circuit breaker before removing or cutting any wires on the   

           machine. 

*  

Never 

apply power to the machine without first insuring that all connections are properly insulated  

           and no live wires are touching the frame. 

*  

Never 

replace a wire or fuse in a machine that is not of the same rating as the one you are replac 

           ing.

Using your Multi-meter 

*  Ensure power is off when measuring resistance. 

*  Ensure the lead you are testing voltage with does not come in contact with the frame. 

*  Do not use leads that are damaged.

Overview 

*  Power enters the machine through the power cord, which then enters a large terminal block, and  

             then to the main power switch. 

*  The main power switch has three positions: 

 

* The first position, “0”, is the off position. 

 

* The second position, “1” (fill), provides power to the controller, pump, and the solenoid   

   coils. 

 

* The third position, “2” (run), provides power to the heating elements.

Main High Voltage Wiring 

The main wiring harness begins with the power cord and continues on throughout the machine. 

* Two wires (one red, the other blue) provide ac power to the microprocessor as well as the valve  

 

coils and brew switches. 

* One leg is attached to all ac components at all times. (Unswitched leg) 

* While the other leg is switched on either by the brew switch or the microprocessor, to activate the  

 

component (switched leg). 

* Each solenoid valve coil and the pump are supplied with one leg of 110v at all times. 

* The control box and manual override switches provide the coils and pump with the second leg of  

 

110v necessary to activate them.

Rocker Switches 

All of the rocker switches on the LaMarzocco are double pole single throw. 

* Contact is always made from top to bottom. 

* Left and right sides are isolated from one another. 

* Test rocker switches by turning the machine off and disconnecting the wires from the suspect    

 

switch. Use a multi-meter to measure ohms from top to bottom with the switch on. A reading  

 

of 0 ohms indicates a functional switch.

Summary of Contents for La Marzocco FB-70

Page 1: ...Franke Coffee Systems North America Inc 5601 1st Ave South Seattle WA 98108 Ph 800 310 5710 Fax 206 782 2124 www franke cs com ...

Page 2: ... is solely dependent on the pressure of the water in the boiler used for steaming As the steam boiler s pressure rises and falls dur ing normal operation so does the water temperature in the heat exchanger used for brew ing The LaMarzocco has a separate boiler for each function A coffee boiler to heat water for brewing espresso and a steam boiler used to generate steam for preparing milk and hot w...

Page 3: ...nsure the machine is unplugged from the wall outlet Tools Certain maintenance procedures may require one of the following tools which are unique to the La Marzocco 1 Sight Glass Tool 2 Heating Element Wrench 3 Diffuser Tool only for machines prior to April 2003 Other tools required are common tools available at most hardware stores Combination metric wrench set ranging from 10mm to 26mm Metric All...

Page 4: ... Water Nozzle 6 Hot Water Dispense Switch Knob Bezel Insert Washers Cotter Pin Mounting Nut Steam Valve Housing Shaft O Rings Washer Shaft Spring Steam Shaft Steam End Gasket Crush Washer Steam Wand Wand O Rings Wand Spring Washer Circlip Swivel Steam Wand Wand O Rings Hairpin Clip 1 8 Steam Knobs The steam knob allows the barista to open and close the steam assembly to prepare the milk used in mi...

Page 5: ...ivate heating the water in both boilers As the water heats up in the front boiler it expands The front boiler is a closed totally saturated vessel with no room for the water to expand into This causes the pressure to increase evidenced by the bottom protion of the gauge climbing Once the gauge needle reaches 12 bar the expansion valve located in the drain box should unseat and prevent the pressure...

Page 6: ...e ground coffee dosed from the grinder The portafilter dosed and tamped with coffee is then inserted into the group head to brew espresso 11 Group Head The group head is where the brewing water meets with the ground coffee in the portafilter to brew espresso The La Marzocco s group head is called a saturated group It is either a nickle plated brass group machines manufactured prior to March 2003 o...

Page 7: ...he sight glass should read between 2 3 and 3 4 during normal operation 14 Steam Wand The steam allows the barista to prepare milk for drinks suchs as lattes cappuccinnos and mochas The La Marzocco uses stainless steel wands that rotate 360 degrees Body Panels For most repairs it may be necessary to remove a body panel 1 Top Trim 2 Upper Surround Panel 3 Left Side Panel 4 Right Side Panel 5 Front P...

Page 8: ... a carbon block to filter out tastes and odors as well as ion exchange resin for softening of the incoming water The car tridge also incorporates a 20 bypass to neutralize the pH allowing for a water recipe that pro vides the best tasting espresso In some areas of the country the use of a Reverse Osmosis system is necessary When us ing an RO system ensure a small percentage of raw water bypasses t...

Page 9: ...g This seems to improve the coffee flavor of single shots To program the machine to pre infuse perform the following Turn the main power switch to the OFF position While holding the far left single ristretto button on the left most keypad turn the power switch to FILL The light above the Swirl button will illuminate indicating that the control box has received the pre infusion command To disable p...

Page 10: ...4 turn represents a 3 degree Fahrenheit temperature change Turn the main switch back to the RUN position If your steam pressure gauge does not read 1 2 bar adjust the pressure switch as follows Turn the main switch to the OFF position Remove the top panel of the machine Locate the pressure switch in the back top left hand corner of the machine For machines equipped with Sirai pressure switches Rec...

Page 11: ...ed out before performing maintenance on the coffee boiler A B C 4 What are the three special La Marzocco tools A B C 5 There are two electical cords coming out of the machine What are each of them for 6 What must you do to the coffee boiler after initial installation before you operate the machine 7 Explain why the bottom portion of the pressure gauge travels up and down between 3 bar and 12 bar d...

Page 12: ...end using water treated by reverse osmosis except in extenu ating circumstances A It s more expensive and complicated to use than filter softening cartridges B It can cause the water to become very agressive causing corrosion C It can remove too much of the TDS in the water causing the auto fill system to not func tion properly D The coffee usually doesn t taste as good 13 If circumstances require...

Page 13: ... a tube to the flowmeter 2 Water enters the flowmeter and rotates the impellor 3 Water exits the flowmeter and travels through a tube to the group valve 4 Water passes through the group valve 5 And travels through a tube to the banjo tube inlet 6 Water enters the banjo tube and flows to the banjo bolt 7 Water passes through the banjo bolt and down towards the diffuser block 8 Water passes through ...

Page 14: ...ter level in the steam boiler The autofill system consists of an autofill circuit on the control box an auto fill probe and an autofill valve The autofill probe is a metal probe which sticks down into the boiler An electrical lead is at tached to the top of the probe approximately 1 2 vac travels through this probe from the control box As the water rises in the boiler and reaches the probe the 1 2...

Page 15: ...rrel Safety Relief Valve The pressure relief valve relieves boiler pressure at 1 8 bar preventing the boiler from over pressurizing It is factory adjusted and sealed and cannot be adjusted External Boost Pump The boost pump increases existing water pressure to 135 psi or 9 bar which is required to properly brew espresso The pump pressure can be adjusted by adjusting the screw on the side of the pu...

Page 16: ...own are from an EE semi automatic machine an AV model would have flowmeters 1 Circulation of water within the boiler and group head 2 Water flow during the brew cycle 3 Discharge of water after completion of brewing cycle ...

Page 17: ...15 11 16 17 19 1 2 3 4 5 6 8 9 7 10 12 13 14 18 ...

Page 18: ...r from the group to the flowmeter 15 Tube feeding water from the flowmeter to the group valve 16 Tube feeding water from the coffee boiler check valve to the X fitting 17 Tube feeding water into the coffee boiler 18 Tube feeding water to the gauge 19 Tube feeding water to the expansion valve 20 Tube feeding steam to the right steam assembly 21 Tube feeding the top of the sight glass 22 Tube feedin...

Page 19: ...e 5 Vacuum Breaker 6 Safety Valve 7 Auto fill Probe 8 Right Steam Assy Valve 9 Pressure Switch 10 Left Steam Assembly 11 Flowmeter 12 Dual Scale Gauge 13 Hot Water Valve 14 Sight Glass 15 Right Steam Assembly 16 Expansion Valve 17 Group Valve Drain Tube 18 Group Valve 19 Drain Box 20 Check Valve 21 Banjo Bolt Solenoid Coil Steam 20 21 21 21 LaMarzocco Hydraulic Schematic 9 ...

Page 20: ... group group valve diffuser block D Diffuser block banjo tube group valve flowmeter group 3 Explain how the machine maintains the water level in the steam boiler 4 What does the vacuum breaker do 5 Why must the group valve be a 3 way valve 6 What problem can cause damage to the machine s entire hydraulic system 7 What products are dispensed from the steam boiler 8 When backflushing the machine wha...

Page 21: ...10 Identify the hydraulic compents in the above picture A B C D E F G H I J K A B C D E F G H I J K ...

Page 22: ...2 run provides power to the heating elements Main High Voltage Wiring The main wiring harness begins with the power cord and continues on throughout the machine Two wires one red the other blue provide ac power to the microprocessor as well as the valve coils and brew switches One leg is attached to all ac components at all times Unswitched leg While the other leg is switched on either by the brew...

Page 23: ...ating Element Each boiler has a heating element The element for the steam boiler receives electrical power from the pressure switch The element s for the coffee boiler s receive electrical power from the thermostat s As electrical power is applied to the element it heats up the surrounding water in the boiler To determine amp draw divide wattage by incoming voltage Pump Motor The pump motor turns ...

Page 24: ...ch then goes through a 1000mfd capacitor which filters out any remaining AC signal Field Impellor O Ring Body The best test point to verify DC voltage is on connector 2 pins 5 and 6 or from the red flow meter wire to chassis ground There are three different versions of control boxes that have been used with the LaMarzocco Until approximately 1990 there was a Non Mask Control Box It has 8 pin conne...

Page 25: ...play should read a value that rapidly decreases then suddenly begins increasing after reaching zero now reverse the leads on the capacitor if the same decreasing then increasing readout occurs the capacitor is good Flowmeter 1 8 2 4k Ohms between the and terminals means field is good Solenoid Coils 7 8k Ohms between terminals means coil is good Fuses Continuity between fuse ends means fuse is good...

Page 26: ...ONLY TWO POSITION ON OFF SWITCH 220 VAC PUMP MOTOR PUMP PROGRAM SWITCH KEYPAD GROUP FOUR SWITCH HOT WATER KEYPAD GROUP THREE KEYPAD GROUP TWO KEYPAD GROUP ONE 6 5 4 3 2 1 10 9 8 7 40ma 10A 1 2 3 4 P PUMP FUSE 10A MICROPROCESSOR STEAM BOILER LEVEL PROBE GROUP FOUR FLOWMETER GROUP THREE FLOWMETER GROUP TWO FLOWMETER GROUP ONE FLOWMETER SWITCH PRESSURE LEFTH AND THERMAL LIMIT SWITCH LEFTH AND THERMOS...

Page 27: ...GHT ELEMENT LEFT ELEMENT ROUP TWO OLENOID GROUP TWO BREW SWITCH GROUP ONE SOLENOID GROUP ONE BREW SWITCH L1 L2 FRAME GROUND TO POSITION TWO CONTROL VOLTAGE AND HEATING ELEMENTS POSITION ONE CONTROL VOLTAGE ONLY 220 VAC PUMP MOTOR PUMP KEYPAD GROUP FOUR KEYPAD GROUP THREE ONE 4 3 2 1 MICROPROCESSOR STEAM BOILER LEVEL PROBE GROUP TWO FLOWMETER NE TER SWITCH PRESSURE RIGHT HAND THERMOSTA ELEMENT RIGH...

Page 28: ...s Mask control box and keypads use 10 pin connectors Program ming key connection is external located on the bottom pin set Keypad has four green LED s over the shot buttons and one amber LED over the continous pour button Wizard control box and keypads use 16 pin connectors There are two keypads available the standard keypad and the chronos keypad with a timer function ...

Page 29: ...rational When the keypad or semi automatic brew switch is activated 220 volts flows to the component to activate it 3 Explain how the coils on the solenoid valves open the valve to allow water to flow through the valve 4 What generation of electronics does the La Marzocco currently use What is the major difference between this generation of electronics and the electronics used in the past 5 What c...

Page 30: ...Troubleshooting Manual ...

Page 31: ...f necessary Page 41 Solution 3 Adjust the coffee boiler s thermostat replace if necessary Page 42 Problem 6 The dispensing pressure is incorrect Solution 1 Adjust the external boost pump Page 44 Problem 7 The machine is making a high pitched squealing noise while brewing Solution 1 Adjust the pump and or expansion valve Page 44 Problem 8 No steam pressure Solution 1 Ensure the main power switch is...

Page 32: ...ved from the flow meter to gauge water volume Important Before proceeding with solution 2 the following steps must be accomplished 1 Turn off the main water supply to the machine 2 Locate the expansion valve in the drain box 3 Turn the barrel of the expansion valve counter clockwise to relieve pressure in the front boiler 4 When the lower portion of the gauge reads 0 bar you may proceed 2 Remove t...

Page 33: ...ger volumes of water in the group head resulting in more stable brewing temperatures 4 Remove the three screws that secure the field to the flowmeter body 5 Remove the flowmeter field 6 Inspect the impel lor for smooth rotation and scale build up on the magnets Replace if necessary 7 Inpect the flow meter jet for scale build up Clean out the jet if necessary 8 Replace the o ring 9 Reinstall the fl...

Page 34: ...omatic models as well as the auto fill board on the EE or semi automatic models each have step down transformers that drop 220vac down to 24vac The voltage that has been dropped down is then passed through a rectifyer which converts the AC voltage into DC voltage AC voltage alternates it s direction of flow whereas DC voltage flows in one specific direction either towards positive or towards negat...

Page 35: ...mplished 1 Turn the machine off 2 Disconnect the power cord from the wall outlet 1 Remove the ma chines left side panel by removing one phil lips head screw 2 Remove the control board bracket and pull the unit from the side of the ma chine 3 Remove the three phillips head screws and lift off the control box cover 4 Locate the fuse and visually inspect for burn marks or damage Replace if discolored...

Page 36: ...n a functioning keypad and the suspect keypad 4 Test the suspect keypad If it is now functioning you have identified a faulty ribbon cable Replace the cable 5 If the keypad still fails to function replace it 6 Remove the four screws on the back of the keypad 7 Separate the back cover from the keypad 8 Remove the keypad from the front of the ma chine 9 Check the solder joints and connections for ev...

Page 37: ...sure 3 You can also try adjusting the grind coarser Solution 2 Check for and repair a faulty ground connection The control board on the AV or automatic models as well as the auto fill board on the EE or semi automatic models each have step down transformers that drop 220vac down to 24vac The voltage that has been dropped down is then passed through a rectifier which converts the AC voltage into DC...

Page 38: ...n the barrel of the expansion valve counter clockwise to relieve pressure in the front boiler 4 When the lower portion of the gauge reads 0 bar you may proceed 2 Remove the leads from the flowmeter field 3 Using a multi meter test the flowmeter field for an electical short Also check the red wire for 18vdc 1 Remove the machine s top panel 4 Remove the three screws 5 Remove the flowmeter field 6 In...

Page 39: ...Turn off the main water supply to the machine 2 Locate the expansion valve in the drain box 3 Turn the barrel of the expansion valve counter clockwise to relieve pressure in the front boiler 4 When the lower portion of the gauge reads 0 bar you may proceed 3 Remove the control box mounting bracket from the machine 4 Disconnect the power leads going to the solenoid coil 5 Disconnect the inlet and o...

Page 40: ... 12 Reinstall the valve plunger and stem Reinstall the stem to the valve body 13 Reinstall the valve coil and retaining nut Reinstall the valve stem cap 14 Using a 14 mm wrench tighten the cap to the stem 15 Reinstall the valve 16 Tighten both fit tings 17 Reattach the power leads to the coil 18 Replace the control board bracket 19 Replace the machine s surround and right side panel 20 Replace the...

Page 41: ... to determine whether or not it has tripped If tripped the red or black reset button will protrude upward slightly Press down firmly to reset Important Before proceeding with solution 2 the following safety measures must be taken 1 Turn the machine off 2 Disconnect the machine s power cord from the wall outlet 2 Replacement of the thermal limiter may be necessary if it fails to reset properly 3 Di...

Page 42: ...etween 195 205 F If the temperature of the brewing water is outside of the proper brewing range adjustment of the thermostat is required 3 Remove the machine s control panel cover Locate the metal adjustment screw at the top of the thermostat and using a 1 4 x 14 screwdriver adjust the thermostat Turn the screw clockwise to increase the brewing temperature Turn counter clockwise to decrease the br...

Page 43: ...ver remove the trim screws 12 Gently flex the panel downward and then rotate the thermostat 90 degrees 13 Pull the thermostat from the well 14 Apply a liberal amount of thermal compound to the bel lows on the new thermostat 15 Use a small cable tie to aid in inserting the thermostat 16 Insert the thermostat and cable tie together 17 Clip off the cable tie when approximately 1 2 has been inserted 1...

Page 44: ...r while brewing adjust the pump pressure Problem 7 The machine makes a high pitch squealing noise while brewing The La Marzocco uses an expansion valve to bleed off excessive pressure from the coffee boiler The expansion valve should be set to relieve pressure at 12 bar If the expansion valve is set too low and the pump pressure is too high water will discharge through the expansion valve making a...

Page 45: ...i meter equipped with an amp clamp check the am perage the element is pulling To determine the proper amperage an element should pull divide the wattage of the element by the voltage going to the element If the amperage is zero turn the machine off disconnect the leads powering the element switch the multi meter to ohms and check the element for continuity If the continuity is zero the element is ...

Page 46: ...Using either a heating el ement wrench in conjuction with a pry bar or a 42mm socket unscrew the heating element 6 Pull the element from the end of the boiler 7 Inspect the old element for damage or excessive scale build up 8 Install a new element gasket on the new heating element 9 Apply a liberal amount of teflon tape to the threads of the elements 10 Install and tighten the new element 11 Insta...

Page 47: ... meter check for voltage at the top two terminals If no voltage is present inspect the wires going to the switch from the terminal block 6 Remove the steam tube supplying the pressure switch and the lock nut securing the pressure switch to the frame 7 Leaving the wires at tached pull the pressure switch from the machine to facilitate easier replacement of the switch 5 Inspect the contacts for pitt...

Page 48: ...screw it to catch the two washers 7 Loosen the steam tube nut using a 17mm wrench and unseat the tube from the assembly 8 Remove the steam assembly mounting nut using a 26mm wrench NOTE Use care not to scratch the facia 9 Remove the steam assembly from the machine 10 Compress the washer and spring against the valve body and remove the snap ring using a pair of snap ring pliers 11 Remove the valve ...

Page 49: ...driver press the gasket against a firm surface and roll it into postition 18 Reinstall the spring and bushing Ensure the bushings larger diameter surface faces the spring 19 Install two new shaft o rings and apply a film of food grade lubricant 20 Reinstall the steam shaft into the valve body 21 Reinstall the shaft assembly onto the valve body 22 Replace the steam arm o rings and apply a film of f...

Page 50: ...ll the steam supply tube 30 Tighten the retaining nut and supply tube simul taneouly to position the wand near the center of the wand access cutout 31 Reinstall the knob and washers 32 Install and bend a new cotter pin 33 Open the steam sup ply ball valve Open the steam valve and check for leaks 34 Reinstall the machine s top panel 25 Install the wand spring and washer ...

Page 51: ...et from the groups bayonet clamp ring 4 Note the small bevel on one side of the new gasket The beveled side goes up the flat side should face down 5 Apply a thin film of food grade lube to the new gasket and install it into the group Push the gasket into place with the stubby flat tip screwdriver 6 Ensure the gasket is fully seated by inserting a portafilter into the bayonet clamp ring 7 Clean the...

Page 52: ... power switch knob 2 Remove the 5 phillips head screws that secure the front panel and remove the panel 3 Remove the two power leads going to the coil 4 Using a 14mm wrench remove the discharge nut on the bottom of the valve 5 Using a 13mm wrench remove the outlet fitting 6 and the inlet fitting from the group valve 7 Gently manuever the valve until it is free from the inlet and outlet tubes 8 Usi...

Page 53: ...ve stem to the valve body 15 Reinstall the valve coil 16 Reinstall the coil retaining nut 17 and tighten with a 14 mm wrench 18 Reinstall the valve onto the machine by 19 realigning and secur ing the inlet and outlet tubes 20 Carefully align and se cure the discharge tube 21 Reinstall the two power leads to the coil 22 Reinstall the machines front panel 23 Reinstall the main switch knob and return...

Page 54: ...the control box mounting bracket from the machine 4 Disconnect the power leads going to the solenoid coil 5 Disconnect the inlet and outlet tubes and remove the autofill valve from the ma chine 6 Remove the end cap from the valve stem 7 Remove the coil retaining nut 8 Remove the coil from the valve stem There are generally two reasons the steam boiler over fills a foreign object lodged in the auto...

Page 55: ... valve stem and seat for scale build up Re place as necessary 12 Reinstall the valve plunger and stem Reinstall the stem to the valve body Solution 2 Inspect the auto fill probe for scale build up Important Before proceeding the following step must be accomplished Turn the machine off and depressurize the steam boiler 1 Remove the machine s top panel 2 Locate the auto steam probe near the center o...

Page 56: ...sucked into the banjo nut and tube due to the back pressure of water exiting the group valves discharge Important Before proceeding with solution 3 the following steps must be accom plished 1 Turn off the main water supply to the machine 2 Locate the expansion valve in the drain box 3 Turn the barrel of the expansion valve counter clockwise to releive pressure in the front boiler 4 When the lower ...

Page 57: ...resso Coffee Machine Model A V Two Water and Drain within 5 Swift EPS Grinder 14 deep 25 high Pump and Motor 220V Elec Supply to Motor H20 for Espresso Water Treatment System Allow space for 3 5 wide x 20 high x 6 deep 1 cartridge mounting Receptacle within 3 and match to plug Plug is NOT included with the machine Suggested NEMA plugs and receptacles 1 AV EE L6 20P L6 20R 2 AV EE L6 30P L6 30R 3 A...

Page 58: ...ter Hole for Utility Lines 25 5 deep 5 8 Flexi Drainline 3 8 Braided Stainless Steel Cold Water Supply Line COUNTERTOP VIEW Back Edge of Countertop Footprint of Grinder All Electrical and Plumbing Must meet Local Codes Water and Drain within 5 Swift EPS Grinder 14 deep 25 high Pump and Motor 220V Elec Supply to Motor H20 Water Treatment System within 3 Receptacle 220V single phase elec supplyto es...

Page 59: ... Supply Line COUNTERTOP VIEW Back Edge of Countertop Footprint of Grinder All Electrical and Plumbing Must meet Local Codes 15 20 8 12 9 16 11 5 Espresso Coffee Machine Model A V Two Espresso Coffee Machine Model A V Two Water and Drain within 5 Swift EPS Grinder 14 deep 25 high Pump and Motor 220V Elec Supply to Motor H20 for Espresso Water Treatment System Allow space for 3 5 wide x 20 high x 6 ...

Page 60: ...ole for Utility Lines 25 5 deep 5 8 Flexi Drainline 3 8 Braided Stainless Steel Cold Water Supply Line COUNTERTOP VIEW Back Edge of Countertop Footprint of Grinder All Electrical and Plumbing Must meet Local Codes Water and Drain within 5 Swift EPS Grinder 14 deep 25 high Pump and Motor 220V Elec Supply to Motor H2O Water Treatment System within 3 Receptacle 220V single phase elec supplyto espress...

Page 61: ...ion location with matching plug L6 50P as one is not supplied with the machine Power is operational Plumbing Requirements 3 8 cold water supply with shutoff valve within 5 of machine s installation location Water supply is operational Floor drain in place within 5 of machine A 5 8 flexi drain line is included with the machine Appropriate water filtration connected and active Water must be softened...

Page 62: ...baskets Replace the diffuser screens Ensure the brew temperature is correct At 9 Months Rebuild the steam assemblies Replace the portafilter gaskets Clean the auto fill probe Ensure the shot volumes are correct Replace the grinder burrs Ensure the brew temperature is correct At 1 Year Rebuild the steam assemblies Replace the portafilter gaskets Clean the auto fill probe Ensure the shot volumes are...

Page 63: ...s at 92C or 200F C F Ensure Brew Pressure is at 9 bar Check Water Hardness GPG Replace softener cartridge if above 4 Grains Per Gallon Check grinder burrs and replace if necessary This item is to be completed upon customer approval and is billable to the customer Adjust Grind Caffeinated Adjust Grind Decaffeinated Check Dosage Grams Check All Switches for Proper Operation Check Shot Volume Single ...

Page 64: ...Screens Check Vacuum Breaker Clean Auto fill Probe Ensure Brew Pressure is at 9 bar Ensure Brew Temp is at 98C or 200F C F Check Water Hardness GPG Replace softener cartridge if above 4 Grains Per Gallon Check grinder burrs and replace if necessary This item is to be completed upon customer approval and is billable to the customer Adjust Grind Caffeinated Adjust Grind Decaffeinated Check Dosage Gr...

Page 65: ... and Replace Impellor Replace Group Valve Plungers Clean Auto fill Probe Ensure Brew Temp is at 98C or 200F C F Ensure Brew Pressure is at 9 bar Check Water Hardness GPG Replace softener cartridge if above 4 Grains Per Gallon Check grinder burrs and replace if necessary This item is to be completed upon customer approval and is billable to the customer Adjust Grind Caffeinated Adjust Grind Decaffe...

Page 66: ...p L107 DIFFUSION SCREEN 5 98 Cost for 2 Group 59 82 3 Group 68 29 4 Group 77 30 ANNUAL PM Quantity Part Number and Description List Price each 1 per group L105 B6 6MM GROUP GASKET 3 03 1 per steam wand L165 K STEAM VALVE REBUILD KIT 2 20 63 1 per group L107 DIFFUSION SCREEN 5 98 1 L271 NEW STYLE PRESSUE STAT 33 34 1 L190 VACUUM BREAKER 21 37 1 L180 VALVE PRESSURE SAFETY 64 15 1 per group LAD070 V ...

Page 67: ... KIT 6 96 1 per group L107 DIFFUSION SCREEN 5 98 Cost for 2 Group 31 94 3 Group 40 95 4 Group 49 96 ANNUAL PM Quantity Part Number and Description List Price each 1 per group L105 B6 6MM GROUP GASKET 3 03 1 per steam wand A 1 001 R GB5 STEAM VALVE REBUILD KIT 6 96 1 per group L107 DIFFUSION SCREEN 5 98 1 L271 NEW STYLE PRESSUE STAT 33 34 1 L190 VACUUM BREAKER 21 37 1 L180 VALVE PRESSURE SAFETY 64 ...

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