Please read this technical handbook thoroughly prior to installation
Contents
1. Service Manual 1000379 Qwikbrew 2 01 10 12Page 24 of 37 Wiring diagram for 2 8kW machines with serial numbers from 10040001 80 10 01 vvv UO Y OLLZOSI GIONS10S N XI ai IJINI E as DIO id AS N psi wwogr S O 3N78 z E SNIVN HL8v3 si uwose s o NMOY8 D GL600S 1 ININITA Ww A O Z gt a D 2 D me N m gt 5 e 23 di V o S A nS gt Y 3 CIZIOSi di S YIH l E TA S i 3 NII 3 L uwozi sz 0 3m9 Mi m n E O E 3 3 2 3 m aA gt IZLOSI ISYTIVE D davi 3 3 9720091 7007 Jamaa ECT er ir IA hdi UIF LLLP UL TAJI HOIH WAS 3804d HAJI MO 490d 3 9 490ud 15 M349 ee Ne wwogz s 0 038 wuooz S 0 J9NVYJO Ww00Z S O MOTIZA 8490 AA dS aouddy Boud UP A NOS I MAZZEO SIN 9 09S FON 340d Hd T MAB2 2 MISEMIMO 6 E0001 napon oBvuanag 50 60 90 S99U0U9 om A IdV UMOJA WWO 3101 YI00 S240 ON Bug WVADVIC DNISIA UoI Jos a2. eee tor Wal MD aa SA Ze dEi CO de E le ojo L e S i I a oS o y iE ee 87 A COI ARTO o E a O HERMISTOR ASSEMBLY e BROWN 0 5 T 1600691 SE a NIE S 300mm E AMP za zo E oOo Z O BLUE 0 75 SIS see z ii 1501212 420mm D i BLUE 0 75 dh 480mm p BROWN 0 5 ES gt O 370mm Og THERMISTOR POCKET OE i CLS RS g aA 40 ELEMENT CS sx 1500975 5 E D BLUE SILICON 2 5 e E AAA 400mm LI BLUE SILICON 2 5 400mm IS x WHITE BLACK 0 5 450mm BROWN 0 5 BLUE INLET SOLENO 630mm FROM PUMP 1502190 BROWN FROM PUMP EARTH FROM FLEX SUMP EARTH 1501540 FLEX IN C
3. wwosy S HISVI wwogs SL HiWv3 DIJON v2 0091 318v9 NOgaly AVM 318v9 NOgaly AWM v 3l8v9 NOY AVM V Service Manual 1000379 Qwikbrew 2 01 10 12Page 25 of 37 diagram for 5 6kW machines irin W a 10g 510994 n3y dS Aouddy Ou UA 80 10 01 yyy HQ gt S0 21 SI1890 O7SIOSI dNNd 3804d 13431 MO SIN 21025 Tdy UMOUT UT 7 1901 V200 S299 ON Sug DOG pUIg RAYS E PATENTINO 282000 napon abovarnog AYIDYIA ONIAIM MA9 S 280 U0 3diuosag OIM D A gt E A A AS wwogr s 0 ang E 00 380 d 1 zu SNIVA HIYVI NI KIT wwo6s S 0 NMOYA ag Tm O o N gt a a D gt 33 aros gt 5 MICIOH Ip 2 gn S Ea WEA 3 lL m ojo i lt o on Fa on Oo 3 o 3 LIZIOSI ISVTIVE dvi A31_H9IH uwogz S 0 038 wuwooz S 0 39NVHO wuoz S O MOTISA W E m 40 Z S460091 INNTA 5 3 gt uwose sz INOONIS INg uwos S 7 3NO9NIS E N wwogg S Z NO9MIS SLIHM WWE S O NMOY8 wwosz S z 3N09MIS h jo a ja O CI J JI Le tt O 00000 wng S 7 wwoge Guo ama HMI GI J S 3 3 318v9 NOg8ly AYM O 150091 O Ma MOL p o YJlHINWA dId O F T S 3 3 318V9 NOSE AVM t 318v9 NOgalW AYM p J18VO NOggly AVWM v ANVL NO GALS Hl vd
4. marco POURING PERFECTION Qwikbrew 2 Service Manual marco W Marco Beverage Systems Ltd 63d Heather Road Sandyford Industrial Estate Dublin 18 UK Tel 0207 2744577 Republic of Ireland UK Tel 0207 9788141 Ireland Tel 01 295 2674 Ireland Fax 01 295 3715 Contents 1 Introduction 2 Safety instructions 3 General description 4 Installation 5 Start Up 6 Operation e Brewing Coffee e Hot water e Lock function 7 Hygiene 8 Technical Data e Access to Internal Components e PCBs PCB Brewer Display PCB Timer Single 2002 PCB Brew Board 2002 Probes Element De scaling the tank Pipework and Sprayhead 9 Wiring Diagrams 10 Amendments 11 Spare Parts List Service Manual 1000379 Qwikbrew 2 01 10 12Page 2 of 37 Page 10 10 11 11 12 12 12 12 16 19 20 20 22 24 21 35 1 INTRODUCTION The information provided in this manual is intended to assist in the installation and maintenance of the Marco Qwikbrew 2 Boiler Brewer Please read the instructions carefully to prevent accidents and ensure an efficient installation This manual is not a substitute for any safety instructions or technical data affixed to the machine or its packaging All information in this manual is current at the time of publication and is subject to change without notice Only technicians or service providers authorised by Marco should carry out installation and mainten
5. 6 pints Up to 6 8litres 12 pints 5 5 litres 10pints 0 48litres min 0 85pints min 230V 2 8kW c w 1 5m flex 13A plug 0 75 BSP Food grade inlet hose supplied 5 50 psi 35 345 kPa Fig 1 General Arrangement Si la so e Bi e 9 El 5 iS UY 5 Plastic Body 1801480 13 Drip Tray Complete 255mmX186mm 2300299 Service Manual 1000379 Qwikbrew 2 01 10 12Page 6 of 37 Fig 2 Internal Arrangement a SI 5 leo 25 Element 2 8kW 230V 1500975 18 Lamp Ballast 1501211 26 Thermistor Assembly 1600691 19 Lamp 1501213 27 PCB Brew Board 1600321 1600326 see amendments parts list 20 Lampholder 1501212 28 PCB Timer 1600322 1600323 see amendments 21 Drain Valve 2100100 Service Manual 1000379 Qwikbrew 2 01 10 12Page 7 of 37 4 INSTALLATION Plumbing 1 Fit a stop valve on a cold water line and attach a 34 BSP male fitting e g Ya x Y2 311 or washing machine type stop valve 2 Connect straight tailpiece of the hose to the stop valve fitting Make sure that pre attached sealing washer is secure 3 Connect right angled tail piece of the hose to the inlet valve of the boiler again BSP Make sure pre attached sealing washer 1s also secure here see Figure 3 4 Turn on water supply and check fittings have sealed 5 A hose 1s not a permanent connection so 1t 1s advisable to close the stop when not in use Electrical A mould
6. replaces the PCB Timer Single 2002 software SM5023 Part No 1600322 These PCBs allow the brewer to be operated in heat fill mode or continuous fill mode The software has been modified so that the error diagnostic signals can be displayed by flashing the red Power On Off LED The following section details the PCB change Qwikbrew2 PCB modification Electronics modification Timer and Brew Board Replacement Marco are currently phasing out the PCB brew board 2002 Part No 1600321 and the PCB Single Timer Part No 1600322 These are found on all Qwikbrew 2 machines produced to date Future batches of Qwikbrew 2 machines will use the PCB Brew Board 2004 Part No 1600326 and the PCB Dual Timer Part No 1600323 as standard Note that the TIMER MAIN PCB Brew Board combination is critical The software codes are linked between the Timer and the Brew board PCB Therefore if a timer PCB is replaced with the new version the Main PCB or microchip should be replaced too The machine will not operate unless the Timer and Main PCB combination 1s correct Each PCB has a label on the microchip which has the software code version printed on it These software codes and corresponding part no s are detailed below Obsolete PCB combination being phased out 1600321 PCB Brew Board 2002 software code SM5022 1600322 PCB Timer Single software code SM5023 New PCB combination 1600326 PCB Brew Board
7. 2004 software code SM5029 1600323 PCB Timer Dual software code SM5030 The procedure for changing the Timer PCBs is detailed on the following pages Service Manual 1000379 Qwikbrew 2 01 10 12Page 28 of 37 AMENDMENTS Machines with serial numbers 10040001 present Modification of Qwikbrew 2 replacing the Single Timer with the Dual Timer 1 Press the power button to switch the machine off 2 Unplug the machine 3 Disconnect the Display PCB 1600324 ribbon cable links from the Single Timer PCB 1600322 Disconnect the Brewer PCB 1600321 ribbon cable link from the Single Timer PCB 1600322 Disconnect the spade terminals from the Single Timer PCB 1600322 See Fig 1 below Remove Single Timer PCB 1600322 2 Sn at ee Gant 1600322 i Sr LN i Ja peo ul j M ct ate Service Manual 1000379 Qwikbrew 2 01 10 12Page 29 of 37 AMENDMENTS Machines with serial numbers 10040001 present Qwikbrew2 PCB modification cont 5 Fit the new Dual Timer PCB 1600323 into position This can only be fitted one way The mains connectors will be at the top Ensure that the PCB is pressed firmly on to the pillar supports this is necessary to keep a good clearance between the mains terminals and PCB bracket See Fig 2 below 1600324 1600323 1600326 6 Reconnect the Display PCB 1600324 as follows The top ribbon cable to J1 on the Dual Timer PCB 1600323 The middle
8. 3 GEMA a particular problem This is HALF BREW FULL BREW TROUBLESHOOTING DIAGNOSTIC GUIDE If an error 1s detected a sequence of flashes is displayed through the POWER LED The length of time and recovery method of each of these flashing displays is detailed below 2 Flash Cycle below low level Display pattern 2 quick flashes then a short pause repeated Electronic check and action e This indicates that the low level circuit is open i e the probe is not in contact with the water e The element is switched OFF at this stage and the inlet is left ON note that 1f this is a low probe wiring fault the water will stop at the high level probe regardless of the status of the low level e This is a recoverable error 1 e the machine does not need to be reset when the problem is solved e g if a closed mains water stop valve is the problem opening the valve will allow water into the machine and normal function will resume when the low level probe is reached Probable causes l The water level is below the low level probe which is normal when the machine fills for the first time Can be flashing for up to 5 min at start up 2 The low level probe wire is disconnected or there is another wiring fault eg a bad earth return connection between the PCB and the Tank Action required l Check that the water pressure is OK and ensure that the stop valve is open 2 Check that the inlet solenoid is w
9. in contact with the water At this level the element is switched on and this body of water is heated to the preset temperature temp adjust pot approx 93 5 96 C More mains water is taken in heating does not stop until the temperature sensor senses a drop of 1 2 degrees The machine stops taking in water and allows time for this water to reach preset temperature This is the Heat Fill cycle This cycle will continue until the high level probe is reached If the water level drops off the high level probe this cycle is repeated By using this method the water in the tank remains between favourable temperature limits However this does mean that the machine can run out of hot water Note old versions of the Qwikbrew did not work on the heat fill system and the level of the water remained at the high level probe regardless of temperature In between the low level and high level is a 3 level probe the brew level probe There is 12 13 pints of water between this level and the low level A brew of coffee can be started at any point above this level A normal full brew is approx 11 pints of water so this is a safe level even in a situation of mains pressure drop In normal circumstances approx 6 pints of water 1s taken in and recovered during a full brew Therefore there should always be at least 7 pints of water above the low level cut off Approximately 15mm 2 pints above the Brew level probe is the Hot Water Draw off
10. ribbon cable to J2 on the Dual Timer PCB 1600323 The bottom ribbon cable to J3 on the Dual Timer PCB 1600323 See Fig 2 and Fig 3 7 Reconnect the ribbon cable from the Brewer PCB 1600321 Data I O to J6 on the Dual Timer PCB 1600321 See Fig 2 and Fig 3 Reconnect the spade terminals as shown in Fig 2 and Fig 3 9 The selector switches should be in the positions shown in the inset in Fig 3 7 e A Y z e L b e i 4 fre 4 m SS A ai ES ES M W WW Wy Fig 3 Ae d a gt 5 e j SS SELECTOR a N SWITCHES IN 4 Ye Pp N SE Service Manual 1000379 Qwikbrew 2 01 10 12Page 30 of 37 AMENDMENTS Machines with serial numbers 10040001 present Qwikbrew2 PCB modification cont NOTE Whenever the Dual Timer 1600323 replaces the single timer 1600322 a new main Brewer PCB 1600326 is required The existing PCB 1600321 on the unit can be converted to the new PCB 1600326 by replacing the main microchip on the PCB If a microchip has been supplied carefully remove the microchip from the Brewer PCB 1600321 and replace with the new chip Ensure that the chip 1s inserted the correct way the semi circle groove should be at the bottom NOTE THESE COMPONENTS ARE FRAGILE AND SHOULD BE HANDLED WITH CARE This new chip contains the software to drive the Dual Timer PCB and contains code that allows the machine to be used in Heat Fill mode or Continuous Fill mode The position of the Jumper J1
11. 0975 1800770 1801195 1801200 1800190 1401800 8000150 1800690 8000240 1700010 1700000 Service Manual 1000379 Qwikbrew 2 01 10 12Page 35 of 37 Machines with serial numbers 04031237 10040001 1801480 1801490 2300299 2300085 2100295 2100275 1401170 3 4 BSP CHROME NUT FOR TAP 1400550 1600324 1600322 1600321 1600691 2301320 2301310 2301300 1700260 1501213 1501212 1501211 2100100 1400990 LOCKNUT 1 2 BSP BRASS DRAIN VALVE 1402370 COPPER WASHER FOR DRAIN VALVE 1501540 PUMP NIKKISO 1801250 TEE PIECE PLASTIC OVERFLOW 1800540 HOSE CLIP TYPE F FOR T PIECES SPRAYHEAD ETC 1800555 1502170 1500975 1800770 1402550 Service Manual 1000379 Qwikbrew 2 01 10 12Page 36 of 37 Machines with serial numbers 10040001 present LOCKNUT 1 2 BSP BRASS DRAIN VALVE ELEMENT 2 8KW 230V M SHAPE 1800770 O RING 4 RED SILICONE FOR CLEANOUT DOOR 1801200 STRAIN RELIEF BUSH FOR ELECTRICAL CORD 1800190 EET NYLON 1401800 CREW PLASTITE FOR FEET 8000150 ILTER PAPER 1800690 ATER INLET HOSE 8000240 URN CLEANSER 1700010 URN BRUSH 1700000 IGHTGLASS BRUSH Service Manual 1000379 Qwikbrew 2 01 10 12Page 37 of 37
12. 1 10 12Page 19 of 37 Element Figures 16 and 17 show the two types of element used on the Qwikbrew 2 The element shown in figure 16 is used on the first batches of the machine This is either a 2 8kW 220V or a 2 8kW 240V depending on whether the machine is in Ireland or the UK Since the European standard voltage is 230V we are in the process of changing our elements to suit this Figure 17 shows the element to be used on new batches of the Qwikbrew 2 This shape of element has a great advantage Fig 16 Fig 17 Replacing the Element e Switch off the machine and remove the plug from the socket Drain the tank using the drain valve at the front of the machine see figure 18 e Unscrew the 8 M6 nuts that clamp the clean out door against the tank wall Pull clean out door back and check element If element is of the type in fig 16 remove element nuts on the front of the clean out door Remove clean out door If element is of type in figure 17 pull the assembly straight out of the tank e Not the position of the red silicone o ring remove and discard Remove element by sliding one leg out at a time See figures 21 and 22 e Replace in reverse order Use a new red silicone O ring 1800770 Do not over tighten M6 nuts Check that the clean out door is sealed at temperature before leaving site Service Manual 1000379 Qwikbrew 2 01 10 12Page 20 of 37 De scaling the tank Follow instructions for removing the element The ta
13. 2 above the microchip determines the mode of operation For Heat fill mode the jumper should be positioned nearest the transformer For Continuous Fill mode the jumper should be positioned furthest away from the transformer Fig 4 shows the jumper in Continuous Fill mode YA 5 np 74 19 De Fr TA T12 S a ANT J ch At t 10 Lal oR 6 TE 4 pi co Gza C ad mE ced zZ y r o Lato L h_ 0 1 E li o po Z Ca LO Y E 2461 The software version on the Brewer PCB microchip should be version SM5029 01 or above SM5029 02 or SM5029 03 etc Note that the temperature may need to be reset on the machine The Half brew time can be adjusted through VR1 on the Dual Timer PCB 1600323 Increase the Half brew time by turning VRI clockwise To decrease the brew time anticlockwise The Full brew time is double the Half brew time Service Manual 1000379 Qwikbrew 2 01 10 12Page 31 of 37 AMENDMENTS Machines with serial numbers 10040001 present Diagnostic indication Any Qwikbrew 2 machine fitted with the PCB Brew Board 2004 Part No 1600326 software code SM5029 and PCB Dual Timer Part No 1600323 software code SM5030 will display error signals via flashes of the Power LED Lock Y pi ca ae This LED will flash when an POWER P Aa error is detected The number READY fi 1 ro BREW oy of flashes in a cycle references
14. 324 P C B Brewer Display Board 2002 P C B Brewer Display Board 1600324 This PCB consists of four black buttons five LEDs and three 4 way connectors which connect to the timer board PCB Timer Single 2002 1600322 The board 1s screwed into brass inserts mounted in the plastic service panel These screws should be M4 x 6mm s s Note Some early models have M3 mounting screws When attaching the board to the plastic ensure that all buttons move freely within the locating holes in the plastic If they are sticking at all unscrew slightly and reposition before tightening again Note that the ribbon cables are unmarked and care should be taken to connect them correctly Ribbon Connections 1 Display Top Between Lock SW1 Power SW2 gt Timer Board J1 2 Display Middle between Power SW2 Half brew SW3 gt Timer Board J2 3 Display Bottom between Half brew SW3 Full brew SW4 gt Timer Board J3 See Figure 10 Service Manual 1000379 Qwikbrew 2 01 10 12Page 12 of 37 Fig 7 Plastic Service Panel Wa dos COFFEE gt E WA Zali MN Plastic Service Panel Mounting Screws us i MARCO Service Manual 1000379 Qwikbrew 2 01 10 12Page 13 of 37 Fig 9 PCB connections Fig 10 Display PCB connections ZOE 3982 108 r 11841 Service Manual 1000379 Qwikbrew 2 01 10 12Page 14 of 37 P C B Timer Single 2002 1600322 Figure 11 shows a close up of the timer board This timer
15. 70091 God AVIASIO 1431 Service Manual 1000379 Qwikbrew 2 01 10 12Page 26 of 37 AMENOMENTS NOTE The first four digits of the serial number denote the month and year of manufacture The remaining four digits represent a factory assigned sequential serial number This is important for identifying machine versions See example below 04 03 2906 FACTORY NUMBER Machines with serial numbers 04031237 to 10040001 These machines have the following modifications 1 The inlet solenoid valve is the right angled type Part no 1502170 This replaces Part no 1502190 The inlet hose from the inlet connects to an elbow welded to the bottom of the tank 2 The sprayhead design is the flow through type The sprayhead has two pipes attached to it The small pipe comes directly from the pump The large silicone tube is the bypass and feeds back into the hot water tank See the picture below mi y AA A AA FAR A SE a i MAY Sprayhead Complete part no 1401550 Service Manual 1000379 Qwikbrew 2 01 10 12Page 27 of 37 AMENOMENTS cont Machines with serial numbers 10040001 present These machines have the following modifications 1 The PCB Brew Board 2004 software SM5029 Part No 1600326 replaces the PCB Brew Board 2002 software SM5022 Part No 1600321 This PCB is essentially the same but with new software on the microchip The PCB Timer Dual 2004 software SM5023 Part No 1600323
16. ail piece connection with an 8mmID silicone tubing sleeve attached to it This acts like a reducer so that the 12mmID hose can connect to the tailpiece Small pieces of this 8mmID silicone hose might be positioned inside the larger hose at the inlet and outlets of the T piece These act as restrictors and help control the flow rate The other control restrictor is a black hose clip type E 1800545 This fits around the silicone hose feeding to the sprayhead The flow can be adjusted by closing the hose clip There are no restrictors of the type found on previous Marco brewers The flow rate is controlled by pipe work and in some cases hose clips The larger bores in the hoses should prevent failures due to scale blockages Fig 30 obsolete Service Manual 1000379 Qwikbrew 2 01 10 12Page 23 of 37 9 WIRING DIAGRAMS also see amendments Wiring diagram for 2 8kW machines with serial numbers up to 04031237 BREW LEVEL PROBE HIGH LEVEL PROBE LOW LEVEL PROBE 2301310 2301300 2301320 N N o 2 O o O o O o y LA ORANGE 0 5 YELLOW 0 5 RED 0 5 200mm 200mm 280mm 7 DISPLAY PCB sr 1600324 ANT LOOP LAMP a TIMER 2009 82 1H of TRA pr BALLAST o toc O Brew IA O E 150121 gt aaah l BOARD O 000 O 2002 IO gt ll Q Ml Ea 1600321 Fr oC al DO SS LAMP a HSH SETE 2 ba he ivi 50121 O 3 ot ar
17. ance of these machines Marco accepts no responsibility for any damage or injury caused by incorrect or unreasonable installation and operation Service Manual 1000379 Qwikbrew 2 01 10 12Page 3 of 37 10 2 SAFETY INSTRUCTIONS Read all instructions To protect against electric shock do not immerse cord and plugs in water or other liquid Do not let cord hang over edge of table or counter or touch hot surfaces Switch off at mains unplug from outlet and turn off water supply when not in use and before cleaning Allow to cool before putting on or taking off parts Do not operate any appliance with a damaged cord plugs or after the appliance malfunctions or has been damaged in any manner The use of spares and accessories not recommended by Marco may cause damage and or injuries Do not use outdoors Do not place on or near a hot gas or electric burner Close supervision is necessary when the appliance is used by or near children Do not use the appliance for anything other than its intended use Save these instructions Service Manual 1000379 Qwikbrew 2 01 10 12Page 4 of 37 3 GENERAL DESCRIPTION Qwikbrew 2 2 8kW Coffee output Half Brew Performance Pall Brew Hot Water Immediate Draw Off Total Recovery at 2 8kW Electrical Connection Fittings Plumbing Pressure Height Height incl Cup Rail Width Depth Depth incl Drip Tray Service Manual 1000379 Qwikbrew 2 01 10 12Page 5 of 37 Up to 3 4 litres
18. developed in 2002 is a simple timer pump driver which uses information supplied by the Brew Board 1600321 to control brewing function Ribbon Connection 1 Timer Board J6 gt Brew Board DATA I O The switching is done using a line driver triac based zero voltage switching This component operates off the neutral from the pump Note The pump has a live wire connected permanently The switching is done on the return neutral side Adjusting Brew Times The pot on the timer board adjusts the half brew time The full brew time is always double the half brew time The half brew range is currently set at approx 3 minutes to 6 minutes Adjusting clockwise increases half brew time Adjusting anti clockwise decreases half brew time Note the first batch of machines serial no 08022211 08022230 requires that the timer board be reset for changes to take effect Once the pot has been turned the machine needs to be switched off and switched on again for the new settings to be saved The brew times will not change until the machine has been reset Machines with serial numbers outside of this range DO NOT need to be reset The change will automatically be detected before a brew commences Fig 11 Timer PCB Connector J5 I Connector J1 not used To Display PCB top Connector J2 To Display PCB middle Connector J6 To PCB Brew Board Data I O Connector J3 To Display PCB bottom M3Y8A91N0 Micr
19. ed 13A plug is factory fitted A suitable 13A outlet is all that is required Fig 3 Plumbing and Electrical Connections Service Manual 1000379 Qwikbrew 2 01 10 12Page 8 of 37 5 START UP Turn the water on at the stop valve and switch the power on at the plug Press the POWER ON button at the front of the machine A red light next to the button will illuminate and the machine will start to fill Note The machine will not heat until the water has reached the low level probe When the low level probe is reached the element is switched on this water is heated to the pre set temperature 93 94 5 C The machine takes in another small body of water while continuing to heat This method of staggered filling heat fill cycle ensures that the temperature in the tank remains within 3 degrees of set temperature This heat fill cycle continues until a the water level reaches the high level probe and b the water temperature reaches the pre set temperature as above This may take up to 1 hour Note When the level of water is at a safe height above the low level the green READY TO BREW light illuminates The machine is not full at this level A brew can be selected but no hot water is available Unless a brew is selected the full quantity of hot water should be available within 25minutes of reaching this level 6 OPERATION The machine is ready to brew Coffee and 10 pints of Hot Water is available for immediate draw off when the mach
20. filter paper with the spent grinds Note allow time for all the coffee to drain from the filter basket before removing e lt A brew can be selected any time the green Ready to brew light is illuminated Fig 4 Filter Basket Fig 5 prepared Hot Water e 10 pints of water is available as an immediate draw off when the machine is full after this no water is available until the heat fill cycle has recovered This is to ensure that any water drawn off is at the correct temperature Service Manual 1000379 Qwikbrew 2 01 10 12Page 10 of 37 Lock Function see figure 6 This is to prevent untrained personnel operating the machine or accidental misuse by trained personnel If the lock button is pressed for approx 5 seconds a red light next to the button will illuminate At this point the rest of the control board is locked The machine will operate as normal Le If it is brewing it will continue to brew Once completed another brew cannot be selected until the lock 1s disabled NOTE The Ready to Brew light will still be illuminated but no brew will be able to be selected To disable the lock hold the lock button for 5 seconds once again This is a particularly useful function in a self service environment Fig 6 Display Lock power 4 READY TO BREW HALF BREW i FULL BREW 7 HYGIENE Like any cooking utensils the coffee holding urn of your Qwikbrew 2 must be cleaned pro
21. ine is full and up to temperature The machine has one large water tank with an urn recessed into it When a brew is selected hot water is pumped from the tank up to the sprayhead and into the filter basket The coffee runs out of the filter basket into the urn Since the water tank surrounds the urn the brewed coffee is kept at temperature The machine works on a heat fill cycle which means that the temperature in the tank does not drop by more than 3 degrees The machine will only allow small amounts of cold water into the tank while continuing to heat to ensure that the temperature does not drop too low If more hot water is used than the machine can recover 0 481 min the amount of water in the tank decreases If the full quantity of Hot Water is drawn off the machine will take approximately 25min to recover back up to the high level probe Note a brew can still be selected when no Hot Water is available out of the tap This is due to a buffer of hot water beneath the level of the hot water stand pipe inside the tank This should preferably be a half brew rather than a full brew to ensure shorter recovery times Drawing off Hot Water while brewing Coffee should not affect the quality of the brew When the level has dropped to a point where a brew cannot be completed the ready to brew light goes out and a brew cannot be selected A 3rd level sensor probe the Brew Level Probe controls this level After a recovery period up
22. limit This is the level in the tank at which the Hot Water tap runs out of water A brew can still be selected at this point Drawing off water at any time should not affect the brewing system Service Manual 1000379 Qwikbrew 2 01 10 12Page 18 of 37 Probes As mentioned earlier there are 3 probes low level high level and brew level on the Qwikbrew 2 the positions of which are shown in figure 2 Figures 13 and 14 show how the probes are removed Note Tank does not have to be drained to remove any probes The probes and bracket are sealed against the wall of the tank with 2 M6 nuts that screw onto studs welded to the tank Remove these nuts and pull the probe assembly out Fig 13 remove nuts Fig 14 remove probe Low Level Probe assembly 2301320 see figure 15 The low level probe is mounted on the sight glass side of the machine and is connected to the Brew Board PCB with a yellow wire High Level Probe assembly 2301300 see figure 15 The high level probe is mounted in the top centre of the tank and is connected to the Brew Board PCB with an orange wire Brew Level Probe assembly 2301310 see figure 15 The brew level probe is mounted on the tank near to timer PCB and is connected to the Brew Board PCB with a red wire Fig 15 probe assemblies Low Level Probe Assembly 2301320 High Level Probe Assembly 2301300 Brew Level Probe Assembly 2301310 ki gt Service Manual 1000379 Qwikbrew 2 0
23. machine has begun the heat fill cycle This is a recoverable error In the heat fill cycle even with reasonably low water pressure the inlet solenoid valve usually only stays ON for approx 5 6 seconds If the inlet valve stay ON for more than 1min30secs there is a problem with the inlet valve or the mains water supply After Imin30seconds the 6 flash cycle is displayed for 2min the inlet solenoid valve is turned OFF during this time After this 2min cycle normal operation resumes 1 e the machine attempts to fill by opening the inlet solenoid valve once more If after 1min30secs no water has come into the machine the 6flash sequence is displayed again This cycle is repeated Probable causes 1 Mains water pressure problem or the mains water stop valve is closed 2 Inlet solenoid valve failure Action required 1 Check the mains water supply If it is good wait 5 minutes to check that the error cycle is continuing 2 If the mains water supply is good check that the inlet solenoid valve is working Service Manual 1000379 Qwikbrew 2 01 10 12Page 34 of 37 11 PART LISTS Machines with serial numbers before 04031237 PART NO 1801510 1900690 1900700 1900695 1900710 1801480 1801490 1801436 2300085 2300350 2100295 2100275 1401170 1400550 1600322 1600321 1600691 2301320 2301310 2301300 1700260 1501213 1501212 1501211 2100100 1400990 1402370 1501540 1801250 1801258 1800545 1800540 1800555 1502190 150
24. nk can now be cleaned through the clean out door see figure 23 Service Manual 1000379 Qwikbrew 2 01 10 12Page 21 of 37 Pipework and Sprayhead Figure 24 highlights the hoses and connections at the front of the machine Figure 25 details hose connections beneath the tank Figure 26 highlights the hoses and connections at the back of the machine Fig 24 Urn Overflow to Drip tray Tank Overflow to Drip tray Pump Inlet Plastic T piece 1801250 Service Manual 1000379 Qwikbrew 2 01 10 12Page 22 of 37 The Sprayhead see amendments To access the sprayhead simply pull out the cup rail and lift off the lid see figures 27 28 and 29 Fi ig 2 O see amendments The pump feed to the sprayhead is shown in figure 26 A length of silicone hose 12mmID connects the pump to a T piece either stainless steel or high temp plastic plastic to be standard on future machines A short length of hose connects the T piece to a stainless steel tube welded to the tank Another piece of hose connects the T piece to the sprayhead There are currently two types of sprayhead on the Qwikbrew 2 The adjustable sprayhead is shown in figure 30 obsolete see amendments This has a ball valve attached to the sprayhead opening or closing the valve can adjust the flow These sprayheads will not be used on future models The standard sprayhead is shown in figure 31 obsolete see amendments This sprayhead has a t
25. ochip Software SM5023 matches Brew PCB code SM5022 Time Adjust Pot Neutra from PCB Brew Board From Pump Neutral black white P C B Brew Board 2002 1600321 NOTE also see amendments Service Manual 1000379 Qwikbrew 2 01 10 12Page 15 of 37 3 El S al el Le Sl El ES This is a modification to the EZT boiler PCB The software code on this PCB SM1078 05 or SM5022 enables it to be used in this brewer or any other standard Marco Boiler EZT 400 700 Comet2 Aquarius 15 3 30 6 30 6 45 The jumper J12 6below selects either boiler or brewer mode Fig 12 PCB Brew Board 2002 N x iar ma P E i r ys Tit ety 1 e Lal f I i JI 7 j a J n i 1 J LI Cs Service Manual 1000379 Qwikbrew 2 01 10 12Page 16 of 37 la EN elle e Components of PCB Brew Board 2002 fig 12 1 Transformer 2 Power On Off 2way connector o looped on this machine 3 LEDs Sway connector not used on this machine 4 Data I O 4way connects to timer PCB J6 Earth Tab Mode of Operation Jumper e to be positioned closest to the transformer for Boiler mode e to be positioned furthest away from transformer for Brewer mode 7 Water Level Sway connector e connects to Low level High level and Brew level probes coi 8 Microchip version number e The software code on this microchip is very im
26. orking de If the water level is above the level of the low probe check the probe circuit wiring Service Manual 1000379 Qwikbrew 2 01 10 12Page 32 of 37 AMENDMENTS Machines with serial numbers 10040001 present TROUBLESHOOTING DIAGNOSTIC GUIDE cont 3 Flash Cycle thermistor open circuit Display pattern 3 quick flashes then a long delay up to 15 seconds repeated Electronic check e This indicates that the Thermistor is measuring such a large resistance that it assumes the thermistor circuit 1s open e The element and inlet valve are turned OFF when this error is detected e This is a recoverable error When the correct range of resistance is measured normal operation resumes Probable causes 1 The thermistor probe is unplugged from the 4way connector on the PCB or the thermistor has failed open circuit Action required 1 Check that the thermistor is plugged in to the PCB correctly If it is replace the thermistor 4 Flash Cycle Heat Fill Mode Only NOT HEATING Display pattern 4 quick flashes then a short pause repeated Electronic check e This checks that the temperature is increasing when the heater is on e Measures the rate that the temperature increases in a specified time This error is only displayed after 20 mins of the heater being on continuously When the error is detected the element and inlet valve are turned off e This is anon recoverable error The machine needs to be reset when this problem is
27. perly regularly MARCO recommend cleaning after each day s brewing using a proprietary urn cleansing compound MARCO URN CLEANSER is available in 1kg tubs for this purpose Full instructions are given on each tub A large Urn cleaning brush and a small sight glass cleaning brush are supplied to assist in thorough cleaning Service Manual 1000379 Qwikbrew 2 01 10 12Page 11 of 37 8 TECHNICAL DATA Maintenance should be carried out by Marco approved technicians only Access to internal components The Qwikbrew 2 has been designed with ease of service in mind All the components PCB s inlet solenoid probes pump and element are accessible from the front of the machine See figure 2 on page 7 Switch off and unplug machine Remove the two mounting screws positioned in the plastic service panel near the tap spigots see Figure 7 Pull the bottom of the plastic service panel away from the curved steel panel Push the service panel down towards the counter to release the tongue top edge from the plastic body Gently lift away from the taps the display board is still connected to the machine See figure 8 Remove curved steel panel by levering the top edge out first PCBs also see amendments Figure 9 shows the PCBs and their connections Three PCBs control the functions of the Qwikbrew 2 1 Main control board 1600321 P C B Brew Board 2002 2 Timer board 1600322 P C B Timer Single 2002 3 Display controls 1600
28. portant Part no 1600321 should have the software code SM5022 The Timer PCB should have software code SM5023 These two PCBs are matched Subsequent modifications have been made to the PCBs and care should be taken that the Timer and Brewer PCB are matched together See amendments 9 Temperature Adjust Pot to increase temp adjust clockwise o to decrease temp adjust anti clockwise 10 Temperature Range Jumper o controls three temperature ranges o should be on the middle pins for boiler brewer operation 11 Thermistor Connector 12 Daughter PCB Connector o used in 5 6kW machines 13 Relay Heater Safety o backup relay for element 14 Relay Heater o switches the element 15 Triac e controls the switching of relays at zero voltage e this lengthens the life of relays by removing the arc flash during switching which wears the contacts on the relav 16 Heater Element Tab 17 Live Tab 18 Inlet Solenoid Tab 19 Live tab spare 20 Suppressor 21 Relay Inlet Solenoid o switches the inlet solenoid 22 Fuse 23 Neutral tab 24 Neutral tab spare Service Manual 1000379 Qwikbrew 2 01 10 12Page 17 of 37 General Operation PCB Brew Board 2002 software vers SM5022 1600321 When the machine is switched on the PCB checks what state the machine is in by checking probe levels and temperature If the low level probe is uncovered the machine will take in mains water until this probe is
29. solved Probable causes 1 All the elements have failed 2 Wiring fault Action required 1 Check that the resistance on the elements If there 1s a reasonable resistance 15 25Q on the element it probably has not failed so the wiring might be at fault NOTE for this error to be displayed all elements would have to fail 5 Flash Cycle THERMISTOR SHORT CIRCUIT Display pattern 5 quick flashes then a short pause repeated Electronic check e This indicates that the Thermistor is measuring zero resistance It assumes the thermistor has failed sort circuit e The element and inlet valve are turned OFF when this error is detected e This is a recoverable error When the correct range of resistance is measured normal operation resumes Probable causes 1 The thermistor has failed Action required 1 Replace the thermistor Service Manual 1000379 Qwikbrew 2 01 10 12Page 33 of 37 AMENDMENTS Machines with serial numbers 10040001 present TROUBLESHOOTING DIAGNOSTIC GUIDE cont 6 Flash Cycle heat Fill Mode Only NOT FILLING Display pattern 6 quick flashes then a short pause repeated for approx 2min Then normal function resumes for 1min30secs then flashes for 2min again this cycle is repeated Electronic check This checks that the inlet solenoid valve is not kept ON for more than 1min30secs when in the heat fill cycle Note this error is only checked once the water level has reached the low level probe and the
30. to 20min the machine will be ready to brew once again Note a longer recovery is required before any substantial amount of Hot Water can be drawn off Service Manual 1000379 Qwikbrew 2 01 10 12Page 9 of 37 Brewing Coffee e Slide out the coffee filter basket and place a single sheet of filter paper inside Put the correct amount of ground coffee into the filter paper Your coffee supply company may have pack sizes to suit the brews of your new Qwikbrew 2 if not as an approximate guide for your first brews Try about 110g 130g 4 4 0z for a 5 pint brew 2 85 litres 220g 260g 8 90z for a 10 pint brew 5 7 litres Depending on the coffee grind and roast and on water quality you may have to adjust these quantities to obtain the optimum flavour Level off the surface of coffee by gently shaking the filter basket See Figures 4 and 5 e Slide the coffee filter basket into the guide rails in the brew head and push fully home e Select the correct brew on the front panel by pressing either the Half Brew button for a 5 pint brew or the Full Brew button for a 10 pint brew Press the button until the amber light illuminates e If you make a mistake press the Power switch to turn the machine off Wait 3 seconds and turn back on again Select the correct brew e A half brew should take around 4 5min A full brew should take around 8 10min These depend on the set up of the machine factory e As soon as possible after brewing remove the
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