Grindmaster 1750 Espresso Machine
Contents
1. OFF and unplug machine Remove cover panel Locate pressure control at the top front right side of the machine Pressure Control e machine Lift off plastic cover from pressure control Locate the open hole with the screw slot in the top of the pressure control With a flat screwdriver carefully adjust the pressure control by inserting screwdriver in slot and turning clockwise to lower pressure or counterclockwise to raise pressure One turn equals approximately 1 PSI Reinstall and check machine for proper pressure as follows a Plug machine in The yellow heater light will turn on b Watch for the yellow heater light to turn off This is the high pressure setting high pressure setting should be set at approximately 20 PSI C Open the steam wand Watch for the yellow heater light to turn on again This is the low pressure set ting The low pressure setting will be within a 3 PSI Range of the high pressure setting Repeat steps 3 6 if needed How to Adjust the Pump Pressure 1 Turn OFF and unplug machine and shut off water supply 2 Locate small closed nut bolt on pump 5 3 Loosen remove bolt Underneath it you will find the adjustment screw 4 To adjust turn the screw clockwise to raise pressure or counterclockwise to lower pressure One half turn equals approximately 10 PSI 5 Reinstall bolt 6 Turn on water 7 Open hot water spout to flush o2. 2450E CAP RUBBER LEG SPLASH SCREW 6 32 X 3 8 SS PH BUMBER RUBBER INSERT COSMETIC SIDE PANEL SS KEYBOARD RT KEYBOARD LT BACKPLATE BEZEL SCREW 4 X 5 8 SWITCH WHITE MOMENTARY 24500 2450 FACING FRONT AUTOMATIC SS PANEL DRAIN SS BACKPANEL SS BUSHING DRAIN 1 2 NPT W SLOT ELBOW 90 PLAS 1 2 X 3 4 BARB WASHER SEALING FRAME LEFT FRAME RIGHT DRAIN TRAY 2450Q 2450E 60504 1 DWG Page 20 Models 2450 2450Q amp 2450E Exploded View Page 2 of 3 NO PART NO DESCRIPTION 1 60161 SINGLE SPOUT EXTENSION 2 60138 DOUBLE SPOUT EXTENSION 3 60147 FILTER SPRING 4 60149 SINGLE PORTION FILTER 5 60148 DOUBLE PORTION FILTER 6 60099 RUBBER GASKET 7 60749 SCREEN GROUP HEAD 8 60739 GROUP HEAD 9 60311 HEAD CALROD HEATER 120V 75W 60068 STEAM WAND TIP REPLACEMENT 60042 STEAM WAND ASSEMBLY 60158 STEAMER CONE SEAT 60128 STEAM WAND O RING 60159 STEAMER SPRING SEAT BR 60129 STEAM WAND SPRING SS 60544 FITTING 1 4 MPT X 1 8 MPT SS 60045 HOT WATER SPOUT ASSEMBLY 60396 KNOB 5 16 18 THREAD VALVE 60399 HANDLE VALVE 60038 NUT COMES WITH BALL VALVE 60038 BALL VALVE 1 4 60914 3 WAY SOLENOID VALVE 2400 24000 60922 3 WAY SOLENOID VALVE 2400E 07245 FLARE NUT 1 4 9 16 60525 FITTING 1 8 MPT X 1 4 FLARE SS 60545 BALL VALVE 1 4 SS 60095 FITTING 1 8 FPT X 1 8 MPT BR 60044 NIPPLE M 1 4 MPT X M 3 8 NPT 60740 EXTENSION VALVE 07249 FITTING M 1 4 FL X 1 8 MPT 90 ELBOW B
3. ALL DISPENSER HEADS CAN BE HOT CAN CAUSE BURNS 60187 Overview Espresso and espresso based drinks Espresso A coffee beverage made by quickly extracting the heart of the coffee flavor under pressure in single servings A single portion of espresso brewed for 18 23 seconds produces about 17 to 2 ounces and is usually served in a small 2 2 ounce preheated espresso cup Crema The fine foamy golden brown extraction that is on the surface of the cup of espresso Crema is a sign that all the elements were right in producing the perfect cup of espresso Cappuccino Usually espresso to frothed milk in a preheated cappuccino mug Some prefer to pour the espresso into the frothed milk in a cappuccino mug while others pour or spoon the frothed milk over espresso Cafe Latte Italian or Cafe au Lait French or Cafe con Leche Spanish A single serving of espresso with steamed milk roughly espresso to milk Frothed milk The thick white foam created by placing the steam wand into a pitcher of cold milk Steamed milk Milk that remains in liquid form heated by the steam wand There are several other espresso based drinks including the addition of flavorings and toppings There are several recipe booklets available on the market today Espresso Cup Cappuccino in glass mug Cafe Latte Mug Espressimo 2450 amp 1750 Espresso Cappuccino Machines Page 2 Initial Preparation Warning To prevent damage to
4. M 1 4 NPT 60047 MOTER 115V 60051 CLAMP PUMP MOUNT 60053 CHECK VALVE M 3 8 NPT X M 1 4 FL 60052 WATER PUMP 60484 MOUNT MOTOR 60057 FITTING M 1 4 FL X 1 8 MPT 60007 NUT 1 4 20 LOCK 60111 FLOWMETER 60386 SCREW M4 X 7 X 10 MM 60498 PLUG 1 4 NPT 60544 FITTING 1 4 MPT X 1 8 MPT SS 60523 ELBOW 1 4 FL X 1 4 NPT SS 60520 FITTING 1 4 FL X 1 4 NPT SS 60939 THERMODISC BRACKET 60569 THERMOSTAT CUT OUT 60713 BRACKET REAR BOILER RETAINING 60715 LONG 1 4 FLARE NUT 66088 BRACKET P STAT SIRAI 66092 90 DEG ELBOW ADAPTER 60590 FUSE 10A CERAMIC SLO BLO 101150 RELAY 66089 HARNESS P STAT MODEL 1750 02 07 07 MJB 03 31 06 MJB ECN2067 12 19 05 MJB ECN2046 8 29 01 12 27 99 60507 2 DWG Espressimo 2450 amp 1750 Espresso Cappuccino Machines Page 24 Models 1750 1750Q amp 1750E Exploded View Page 3 of 3 NO PART NO DESCRIPTION 1 60114 BLANK BLOW BACK 2 60101 02 DOUBLE FILTER HANDLE ASSEMBLY 3 60150 FILTER HANDLE 4 60138 DOUBLE SPOUT EXTENSION 5 60068 STEAM WAND REPLACEMENT TIP 6 60101 FILTER HANDLE CASTING ONLY 7 60042 STEAM WAND ASSEMBLY 8 60147 FILTER SPRING 9 60158 STEAMER CONE SEAT 10 60148 DOUBLE PORTION FILTER 11 60128 STEAM WAND O RING 12 60099 RUBBER GASKET 13 60159 STEAMER SPRING SEAT BRASS 14 60749 SCREEN 15 60129 STEAM WAND SPRING SS 16 60739 GROUP HEAD 60769 KIT 17 60044 NIPPLE 1 4 X 3 8 18 60311 HEAD CALROD HEATER
5. Plumbing Guide VACUUM BREAKER OPEN BELOW 2 PSI CLOSED ABOVE 2 PSI PRESSURE NEEDLE VALVE onto si WATER SUPPLY CONNECTION AUTOMATIC FILL 2 WAY SOLENOID VALVE CHECK VALVE PRESSURE STAT SWITCHES HEATER ON OFF 17 20 PSI STEAM PRESSURE HEAT RELIEF VALVE EXCHANGER 30 PSI BOILER PUMP MOTOR GROUP HEAD 3 WAY SOLENOID VALVE Tf a ORIFICE LEFT SIDE RIGHT SIDE i RAN immi M HOT WATER E FAUCET FLOW RESTRICTOR Page 17 Espressimo 2450 amp 1750 Espresso Cappuccino Machines Models 1750 amp 2450 Wiring Schematic BOILER AUTO FILL CIRC MAIN POWER SWITCH ON OFF TEMPERATURE CONTROL CIRCUIT BREW CONTROL CIRCUIT ni AUTOFILL FLOAT SWITCH N GND BLACK BLACK WHITE ur 5 T m BOILER FILL SOLENOID VALVE BOILER AUTO FILL LAMP YELLOW WHITE R MAIN POWER SWITCH LAMP BLACK WHITE m BLACK _ RD Jl WHITE BROWN t BROWN WHITE GROUP HEAD HEATERS W THERMOSTATS BLACK _ RED RED HI TEMP CUT OUT BOILER HEATER Q THERMOSTAT m PRESSURE STAT CASING GND HEATER LAMP AMBER RED WHITE RELAY CONTACT RED BLA
6. Tip Cleaning Filter Holders with Espresso Cleaner Remove the stainless steel filter from both filter holders Wash both filters and filter holders with espresso clean er detergent then rinse clean with water Cleaning the Drain Basin Remove drain tray Turn on both brew switches for 15 seconds without filter holders in place Turn machine off and allow to cool thoroughly overnight Wipe out the drain basin with a damp cloth and espresso cleaner Replace drain tray Page 10 Care and Cleaning Monthly Cleaning Clean Group Head Screen and Group Head Gasket 1 2 Remove screw holding screen in place Remove and clean screen shower and group head gasket Wipe and clean group head Reinstall gasket shower and screen and then tighten screen securely Note There are numbers molded onto one side of the gasket Insert gasket with numbers facing up Make sure gasket is positioned in place Page 11 Yearly Cleaning Inspection testing and repair of this espresso machine including the following procedures should only be performed by a qualified service technician Replace head gaskets annually Clean group strainer replacing if necessary Flush heat exchanger by running water through the hot water spout and check for proper flow Check steam pressure to be approximately 17 20 P S I Check group head pressure to be approximately 125 P S I Empty the Boiler 9 10 The following is
7. longer than 15 20 seconds to steam one cup of milk 3 Slowly move the pitcher up and down but keep the tip submerged 4 Some cafe latte drinkers like a slight amount of foam on top of their steamed milk To do this bring the top half of the steam tip out of the milk for a few seconds then submerge steam wand back into the milk This will create froth Turn off steam Remove steam wand from milk Important After steaming milk and removing pitcher from steam wand point steam wand over drain pan and pull steam handle all the way down This expels any milk which may be in the steam wand Wipe excess milk off steam wand immediately after every steaming Espressimo 2450 amp 1750 Espresso Cappuccino Machines Care and Cleaning Daily Cleaning Backwashing Group Heads 1 Remove filter holders from machine 2 Turn on both brew switches This will flush residual grounds and impurities out of the group heads 3 Remove the filter from the filter holder 4 Insert a blank filter no holes into the filter holder 5 Lock the filter holder into the group head 6 Turn on the brew switch for 15 seconds Back Splash Panel 7 After turning off the switch look under the drain tray for the water being expelled from the exhaust pipe 8 Repeat steps 6 and 7 three times on each group head Filter holders do not need to be removed between repetitions 9 Remove filter holders and turn on
8. proper procedure for emptying and replacing water in the boiler Turn OFF and unplug machine Turn pressure down to 0 P S I by directing the steam wand over the drain pan and pulling down the steam handle Take out main heater by removing four bolts and disconnect the two wire terminals Check for buildup on heater De lime or replace heater if necessary Siphon water out of the boiler and check for clarity Refill with water Cover the heater terminal wires with electrical tape With main power switch of machine OFF plug in machine Boiler will begin to fill Check for fill time of 3 to 5 minutes Look for proper water level to be about 3 inches from the top of boiler Repeat as necessary If all is correct unplug and reinstall heater using a new heater gasket Clean Pump Strainer 1 2 5 6 Turn OFF and unplug machine Turn OFF water supply Remove strainer bolt Remove strainer and clean Reinstall strainer Turn on water Plug in Make sure boiler is filled AUTOFILL light will be OFF Turn machine ON Check for proper brew levels Espressimo 2450 amp 1750 Espresso Cappuccino Machines Adjustments Inspection testing and repair of this espresso machine including the following procedures should only be performed by a qualified service technician How to Adjust the Pressure Control 1 2 Espressimo 2450 amp 1750 Espresso Cappuccino Machines Turn
9. 120V 75W 20 60038 BALL VALVE 1 4 21 60397 KNOB 5 16 18 THREAD VALVE 22 60038 NUT COMES WITH BALL VALVE 23 60399 HANDLE VALVE 24 60091 ELBOW 1 4 FL X 1 4 MPT 25 60006 WASHER 9 32 ID X 5 8 OF SS 26 60914 3 WAY SOLENOID VALVE 17500 60922 3 WAY SOLENOID VALVE 1750E 27 60525 FITTING 1 8 X 1 4 FL SS 28 60742 SHOWER 29 07245 FLARE NUT 1 4 30 60149 SINGLE PORTION FILTER 1 60161 SINGLE SPOUT EXTENSION 32 60101 01 SINGLE FILTER HANDLE ASSEMBLY 3 60045 HOT WATER SPOUT ASSEMBLY 35 60012 BOLT 1 4 20 X 1 2 SS 6 60545 BALL VALVE 1 4 SS 57 60523 ELBOW 90 1 4 X 1 4 M FL SS 55 60544 FITTING 1 4 MPT X 1 8 MPT SS 56 60266 FLOW RESTRICTOR 57 07249 ELBOW 90 M 1 4 FL X 1 8 58 07025 01 SCREW 6 32 3 8 SS PH 59 60261 01 THERMOSTAT GROUP HEAD 60 60740 EXTENSION VALVE 61 60745 BRACKET BALL VALVE MOUNTING 62 60746 SCREW 10 24 X 1 4 SS PH 65 60757 O RING STEAM TIP 64 60738 CLIP VALVE EXTENSION RETAINING 65 71177 SCREW 8 32 X 3 8 PH FLAT HEAD M S SS 66 60741 O RING 0 239 X 0 070 67 60796 GASKET RED SILICONE 1 32 HEAD 68 60095 FITTING 1 8 FPT X 1 8 MPT BR MODEL 1750 REV 12 19 05 MJB ECN2046 REV 12 27 99 60507 3 DWG 25 Espressimo 2450 amp 1750 Espresso Cappuccino Machines GRINDMASTER CORPORATION Grindmaster Coffee Grinders and Brewers e PrecisionBrew Brewing Systems e Espressimo Espresso Machines Crathco Hot B
10. 60394 4 60385 LEG 2 1 2 ADJ FOOT 5 61305 SCREW 8 32 X 5 8 PH PN HD SS BLACK 6 60106 CORD POWER SJOW 12 3 7 60397 SWITCH GREEN 8 60371 GAUGE PRESSURE I 60379 LAMP INDICATOR AMBER 1 1 1 1 1 MODEL 1750 IE 05 MJ 204 0 97 60507 1 DWG c 1 6 EV C 1 1 EV 12 1 EV 6 1 Page 23 Espressimo 2450 amp 1750 Espresso Cappuccino Machines Models 1750 1750Q amp 1750E Exploded View Page 2 of 3 PART NO DESCRIPTION 60526 NIPPLE M 1 4 X M 3 8 60445 CONTROLLER ESPRESSO 60451 TRANSFORMER 07206 06 NUT 6 32 SS 07023 01 SCREW 6 32 X 3 8 SS 60288 SCREW 6 32 X 1 2 PH SS 60454 BRACKET CONTROLLER 60018 TEE 1 4 FL X 1 4 FL X 1 4 NPT 60006 WASHER 9 32 ID X 5 8 OF SS 60088 NUT 3 8 16 304 SS 9 16 07245 FLARE NUT 1 4 60085 BOILER 60278 TOP AUTOMATIC BOILER 60087 WASHER 25 64 ID X 1 OD 60361 BRACKET BOILER RETAINER 60012 BOLT 1 4 20 X 1 2 SS 66087 PRESSURE STAT SIRAI 60067 ELBOW 90 M 1 2 MPT X M 1 2 NPT 60066 RELIEF VALVE 60059 COMPLETE FLOAT SWITCH 60268 GASKET SCREW IN HEATER 60570 HEATER 120V 1800W PIGGY BACK 60065 FITTING 1 4 COMP X M 1 4 NPT 70341 FITTING 90 ELBOW SILICONE 60519 VACUUM BREAKER VALVE 60086 BOILER GASKET 60913 SOLENOID VALVE 2 WAY 60529 TEE F 1 4 X 1 4 X 1 4 NPT SS 60532 ELBOW 90 M 1 4 MPT X F 3 8 NPT SS 60054 CHECK VALVE M 1 4 FL X
11. CK WHITE AUXILLIARY HEATER WHITE RELAY COIL PURPLE CONTROLLER a L ORANGE WHITE PUMP MOTOR _ PURPLE N WHITE DISPENSE SOLENOID VALVE BLUE WHITE DISPENSE SOLENOID VALVE FUSE CONTROL TOUCHPAD TYPICAL BLACK OOO LOW VOLTAGE DC Sc CIRCO FLOWMETER TYPICAL YELLOW uon i BLACK WHITE TRANSFORMER 11 2 97 MJB 60347 DWG 4 27 97 2150 2450 1750 Espressimo 2450 amp 1750 Espresso Cappuccino Machines Page 18 Models 1750Q amp 2450Q Wiring Diagram L1 N L2 BLACK BLACK WHITE BOILER AUTO FILL CIRCUIT x if 3 1 8 BOILER FILL SOLENOID VALVE 8 AUTOFILL FLOAT SWITCH a BOILER AUTO FILL LAMP MAIN POWER SWITCH YELLOW WHITE ON OFF MAIN POWER SWITCH LAMP 1 BLACK WHITE i C RED FOR 21500 RED BLACK _ BLACK FOR 2450Q uu BOILER HEATER CUT OUT HEATER LAMP AMBER THERMOSTAT PRESSURE STAT RED FOR 2150Q WHITE FOR 2150Q BLACK FOR 2450Q RED FOR 2450Q A BLACK L RED Tu WHITE HEATER CIRCUIT BROWN t BROWN WHITE HEAD HEATERS W THERMOSTATS z CONTROLLER m ORANGE WHITE N PUMP MOTOR L PURPLE N WHITE DISPENSE SOLENOID VALVE BREW CONTROL CIRCUIT BLUE WHITE DISPENSE SOLENOID VALVE FUSE CONTROL TOUCHPAD TYPICA
12. ERMOSTAT HI TEMP CUT OUT 77 60713 BRACKET REAR BOILER RETAINING 78 60715 LONG 1 4 FLARE NUT 79 66088 BRACKET P STAT SIRAI 80 66092 90 DEG ELBOW ADAPTER 81 60590 FUSE 10A CERAMIC SLO BLO 82 101150 RELAY Espressimo 2450 amp 1750 Espresso Cappuccino Machines 66089 HARNESS 5 MODELS 2450 2450Q 2450E REV F 02 07 07 REV E ECN2067 03 31 06 REV D ECN2046 12 19 05 REV C ECN1731 8 29 01 REV B ECN1565 11 17 00 CN1339 4 25 00 CREATED 12 27 99 60504 5 DWG Page 22 Models 1750 1750Q amp 1750E Exploded View Page 1 of 3 O 60496 HARNESS 1750 WIRING 1 60471 COVER SPLASH 2 60470 TOP COVER 3 05096 LAMP INDICATOR RED 4 60398 SWITCH RED 5 60384 CAP RUBBER LEG 16 60476 SPLASH 17 07023 01 SCREW 6 32 X 3 8 55 SL 18 w0631007 BUMBER RUBBER 19 60364 INSERT COSMETIC SIDE PANEL SS 20 60472 BACKPANEL SS 21 60474 FACING FRONT AUTOMATIC SS 22 60479 PANEL DRAIN SS 23 60446 KEYBOARD LT 24 60448 BEZEL FLAT AUTOMATIC 25 60449 BACKPLATE BEZEL 26 60759 SCREW 4 X 5 8 27 60246 BUSHING DRAIN 1 2 NPT W SLOT 28 60014 ELBOW 90 PLAS 1 2 X 3 4 BARB 29 60319 WASHER SEALING 30 60561 COUPLING 1 2 FPT X 1 2 FPT PLASTIC 31 60562 NIPPLE 1 2 NPT X 1 2 NPT X 2 PLAS 32 60350 FRAME LEFT 33 60351 FRAME RIGHT 34 60478 DRAIN TRAY NO PART NO DESCRIPTION 1 60362 PANEL PLASTIC LEFT SIDE 2 60363 PANEL PLASTIC RIGHT SIDE 3 60703 KIT DRAIN TRAY 60477
13. Espressimo Espresso Cappuccino Machines Operation amp Installation Manual For Models 2450 amp 1750 Also includes information amp instructions for Q amp E models TABLE OF CONTENTS Warning Labels Initial Preparation Understanding basic concepts about brewing espresso External machine parts 2450 amp 1750 Accessories Installation Programming Instructions How to Brew Espresso How to Froth Milk How to Steam Milk Care and Cleaning Adjustments Coffee Taste and Appearance Guide Troubleshooting Guide Plumbing Guide Wiring Diagrams Exploded Views 2450 Exploded Views 1750 Prior authorization must be obtained from Grindmaster Corporation for all warranty claims Grindmaster Corporation 4003 Collins Lane Louisville Kentucky 40245 USA 502 425 4776 800 695 4500 USA and Canada only m 800 568 5715 technical service only GRINDMASTER s ere CORPORATION www grindmaster com Grindmaster Corporation 1994 0307 Form ES 351 08 PRINTED IN USA Part 60236 Warning Labels The following warning labels were on your espresso machine when it shipped from the factory The labels should remain on the machine in good readable condition at all times If one of your labels is missing or damaged order a replacement label immediately DISCONNECT FROM AND ALLOW COOL CAUTION H OT SU RFAC ES THOROUGHLY BEFORE SERVICING OR CLEANING 60188 CAUTION HOT SURFACES
14. L E OOO LOW VOLTAGE DC LOGIC CIRCUIT FLOWMETER TYPICAL CK E YELLOW YELLOW BLACK WHITE TRANSFORMER BLACK NU BLACK WHITE HOT WATER CIRCUIT 2450Q ONLY HOT W TER NOR WATER SWITCH SOLENOID Page 19 GND MAIN POWER SWITCH GREEN CASING GND 11 2 97 MJB 60348 DWG 4 27 97 21500 24500 Espressimo 2450 amp 1750 Espresso Cappuccino Machines Models 2450 2450Q amp 2450E Exploded View Page 1 of 3 NO PART NO DESCRIPTION 60362 PANEL PLASTIC LEFT SIDE 2 60363 PANEL PLASTIC RIGHT SIDE 3 60702 KIT DRAIN TRAY 60355 60394 4 60385 LEG 2 1 2 ADJ FOOT 5 61305 SCREW 8 32 X 5 8 PN HD SS BLACK 6 60106 CORD POWER SJOW 12 3 4226 60200 POWER SJOW 12 4 24309 61453 CORD POWER SJOW 12 3 2450E 7 60448 BEZEL FLAT AUTOMATIC 8 60371 GAUGE PRESSURE 9 60379 LAMP INDICATOR AMBER ien 60463 LAMP INDICATOR AMBER 2450Q 2450E 10 60792 HARNESS WIRING 2E 60793 HARNESS WIRING 2450Q 2450E 11 60369 COVER SPLASH 12 60359 TOP COVER 13 05096 LAMP INDICATOR RED 2020 24500 70271 LAMP INDICATOR RED 2450 60398 60318 60384 60354 07023 01 0631007 60364 60461 60446 60449 60759 70445 60367 60360 60358 60246 60014 60319 60350 60351 60356 MODELS 2450 REV REV REV B REV A REV Espressimo 2450 amp 1750 Espresso Cappuccino Machines SWITCH RED os 2450Q SWITCH RED
15. Motor powers the pump Hot water flows to group head to brew espresso Steam Wand Cold water becomes hot water as inlet line is routed through boiler How espresso is made differently from regular brewed coffee Traditional coffee is brewed by hot water being poured through loose coffee grounds With espresso water is heated in an enclosed chamber then the water is forced quickly under pressure through fine compacted coffee grounds Espresso can be made in either single or double servings Correctly prepared espresso has a strong potent coffee flavor and crema on the surface of the espresso Finely ground coffee grounds are tamped into the filter holder See instructions on page Espressimo 2450 amp 1750 Espresso Cappuccino Machines Double Filter Holder with two cups Page 4 1750 amp 2450 External Machine Parts Touch Pad 2 Hot Water Handle 3 Hot Water Spout 4 Filter Holder 5 Back Splash Panel 6 Drain Tray Basin 7 Leg 1 Left Automatic Touch Pad When button is pressed hot water is dispensed through the filter holder and into the cup See programming instruc tions on page 22 Not included on Model 1750 2 Hot Water Handle Pull down to dispense hot water through hot water spout 3 Hot Water Spout Offers fresh hot water by the cup for Cafe Americana hot tea and cocoa 4 Filter Holder Handle and filter holder assembly for a single espresso serving Fi
16. R 60742 SHOWER 60091 ELBOW 90 1 4 MPT X 1 4 FLARE 60523 ELBOW 90 1 4 MPT X 1 4 FLARE SS 60266 FLOW RESTRICTOR 60006 WASHER 9 32 ID X 5 8 OD SS 60114 BLANK BLOW BACK 60101 02 DOUBLE FILTER HANDLE ASSEMBLY 60101 01 SINGLE FILTER HANDLE ASSEMBLY 60150 FILTER HANDLE 60101 FILTER HANDLE CASTING ONLY 60261 01 THERMOSTAT GROUP HEAD 07023 01 SCREW 6 32 3 8 SS PH 60745 BRACKET BALL VALVE MOUNTING 60746 SCREW 10 24 X 1 4 SS PH 60757 O RING STEAM TIP 71177 SCREW 8 32 X 3 8 PH FLAT HD M S SS 60738 CLIP VALVE EXTENSION RETAINING 60741 O RING 0239 X 070 60796 GASKET RED SILICONE 1 32 HEAD MODELS 2450 2450Q 2450E REV B ECN2046 12 19 05 A ECN1339 4 25 00 RELEASED 12 27 0 60504 2 DWG Page 21 Espressimo 2450 amp 1750 Espresso Cappuccino Machines Models 2450 2450Q amp 2450E Exploded View Page 3 of 3 NO PART NO DESCRIPTION 24 07245 FLARE NUT 1 4 9 16 26 60012 BOLT 1 4 20 x 1 2 55 9 16 27 60047 MOTOR 115V 2450 2450Q 60154 MOTOR 230V 240V 2450E 28 60051 CLAMP PUMP 29 60052 PUMP 30 60526 NIPPLE 1 4 MPT X M 3 8 NPT SS 31 60053 CHECK VALVE 3 8 MPT X 1 4 FL 33 60054 CHECK VALVE M 1 4 FL X M 1 4 NPT 34 60532 ELBOW 90 M 1 4 MPT X F 1 4 NPT SS 35 60529 1 4 X 1 4 X 1 4 FPT SS 36 60057 FITTING M 1 4 FL X 1 8 MPT 37 60065 FITTING 1 4 COMP X M 1 4 NPT 38 60913 SOLENOID VALVE 2 WA
17. Y 50 24500 60921 SOLENOID VALVE 2 WAY 2450 39 60085 BOILER 40 60086 BOILER GASKET 41 60278 BOILER TOP BRASS 42 60087 WASHER 25 64 ID X 1 OD 43 60088 NUT 3 8 16 304 SS 9 16 44 60066 RELIEF VALVE 45 60067 ELBOW 90 M 1 2 NPT X M 1 2 NPT 46 60018 1 4 FL X 1 4 FL X 1 4 NPT 47 60059 COMPLETE FLOAT SWITCH ASSEMBLY 48 60268 GASKET SCREW IN HEATER 49 60570 HEATER 120V 1800W PIGGY BACK 2450 60178 HEATER 240V 2200W SCREW IN 2450Q 2450E 50 70341 FITTING 90 ELBOW SILICONE 51 60519 VACUUM BREAKER VALVE 52 66087 PRESSURE STAT SIRAI 53 60361 BRACKET BOILER RETAINER 54 60386 SCREW M4 X 7 X 10 MM 55 60020 NUT 6 32 56 60445 CONTROLLER ESPRESSO 57 60451 TRANSFORMER ER 2450Q 60462 TRANSFORMER 2450E 58 60368 BRACKET CONTROLLER 59 07023 01 SCREW 6 32 X 3 8 PH SS 60 60288 SCREW 6 32 X 1 2 PH SS 61 86864 CAGE NUT 62 60543 FITTING 1 4 FL X 1 4 MPT X 1 4 MPT SS 63 60547 FITTING 1 4 FL X 1 FPT SS 64 60539 SPACER 2 WAY VALV 65 60544 FITTING 1 4 1 55 66 60111 FLOWMETE 67 60525 ELBOW 90 1 4 MPT X 1 4 FL SS 68 60546 NIPPLE 1 24 PT X 1 1 2 55 69 60536 ELBOW 1 8 X 1 8 se T sba 2450E 70 60266 FLOW RESTRICTOR 2450Q 2450E 71 60045 HOT WATER ASSEMBLY 2450Q 2450E 72 60598 FITTING 1 8 F NPT X 1 4 M FLARE 2450E 2450Q 73 07051 07 SCREW 10 32 PH SS 24500 2450E 74 60337 BRACKET FLOWMETER 75 60939 THERMODISC BRACKET 76 60569 TH
18. ace main power switch if faulty and check machine Check to make sure machine is turned on and plugged in Check to verify outlet has power with lamp or radio Check main circuit breaker If you still need help call an authorized dealer in your area or Grindmaster Corporation s Technical Service Department You can reach Technical Service at 800 695 4500 USA amp Canada only or 502 425 4776 Monday Friday 8 00 AM 8 00 PM Eastern Standard Time Please have the model and serial number ready so that accurate information can be given Prior authorization must be obtained from Grindmaster Corporation s Technical Service Department for all warranty claims Page 15 Espressimo 2450 amp 1750 Espresso Cappuccino Machines Troubleshooting Guide cont d Problem Possible Cause Solution Brew cycle will not start or water does not come out water spout Flow restrictor doser in group head is clogged Improper filter in filter holder or clogged filter Spray deflector or group strainer is clogged Switch or solenoid valve faulty No water to machine check by opening hot water spout Water supply valve closed Water filter may be clogged Water is off continuously Water pressure too low minimum pressure should be 25 PSI Faulty float switch No water check by opening hot See section on no water to machine Clean or replace if needed Check to be s
19. brew switches to flush water through 10 Remove blank filter from the filter holder and replace with single or double filter Cleaning External Surfaces Wipe all external surfaces clean with a damp cloth Never use abrasive cleaners Rinse filters and filter holders with hot water then wipe clean with a damp cloth Cleaning the Steam Wand Wipe the steam wand clean and let it soak in a glass of water overnight then wipe clean again Never scrape the steam wand Cleaning the Drain Remove the drain tray Turn on both brew switches for 15 seconds without filter holders in place Replace drain tray Espressimo 2450 amp 1750 Espresso Cappuccino Machines Weekly Cleaning Backwashing with Espresso Cleaner 1 Follow the daily backwash procedure except after step number 4 fill the blank filter with coffee cleaner urn cleaner or white vinegar 2 After backwashing with the cleaner make sure all detergents are cleaned away as the following procedures indicate A Remove filter holders and rinse clean B With filter holders off flush both group heads by turning on brew switches for 15 seconds C Backwash both group heads with clean water See step numbers 5 8 under Backwashing group heads Cleaning the Steam Wand Tip Unscrew the tip from the steam wand and clean thoroughly inside A wire can be used to clean the holes in the steam wand tip Replace tip when clean Tip of Steam Wand Holes in Steam Wand
20. coarse Coffee tamp is too tight Not enough coffee used Grind texture is too coarse Coffee tamp is too light Diameter of cup is too wide Coffee not fresh Water did not reach correct brewing temperature Filter holder and or cups were not preheated No water filter used or water filter needs to be changed Amount and or texture of coffee needs adjustment Espressimo 2450 amp 1750 Espresso Cappuccino Machines Use a lighter tamp Use a coarser grind Use less coffee Use more coffee Use a finer grind Use a firmer tamp Use more coffee Use a finer grind Use a firmer tamp Use a small diameter espresso cup Use freshly ground coffee from fresh whole beans Wait for machine to reach at least 10 PSI on pressure gauge If machine does not reach 10 PSI within 30 minutes refer to mechanical guide in this manual Preheat filter holder and cups with top cup warmer or hot warmer tap Install water filter or change cartridge in existing filter Adjust amount and or grind texture of coffee as needed Troubleshooting Guide Inspection testing and repair of this espresso machine including the following procedures should only be performed by a qualified service technician Warning Use extreme caution when working around hot surfaces when servicing electrical equipment Disconnect espresso machine from power outlet when servici
21. d 2 Place half of the tip of the steam wand into the milk 3 Pull the steam handle 3 4 of the way down Frothed milk will start to form as long as the tip of the steam wand is half submerged in the surface of the milk It should take no longer than 10 15 seconds to froth one cup of milk 4 Slowly move the pitcher up and down while keeping the tip of the steam wand near the surface of the frothed milk The amount of frothed milk will continue to increase 5 The remaining milk can be steamed heated by submerging the wand into the remaining milk Turn off steam while tip of steam wand is still submerged Note Be careful not to scald milk This may occur if milk is steamed too long 6 Important After frothing milk and removing pitcher from steam wand point steam wand over drain pan and pull steam handle all the way down This expels any milk which may be in the steam wand Wipe excess milk off steam wand immediately after every steaming Page 9 How to Steam Milk 1 Before steaming milk point steam wand over drain pan and pull steam handle all the way down This releases any moisture which may have collected inside the steam wand 2 Submerge the tip of the steam wand into the middle of the pitcher of milk and pull the steam handle all the way down Heat milk to the desired temperature Do not scald milk by steaming too long Milk is scalded once it reaches the boiling point It should take no
22. e filter holder 6 Place a preheated espresso cup under the filter holder Turn on the appropriate brew switch for 18 to 23 seconds then turn off the brew switch Espresso will flow out at a slow steady rate Each 17 to 2 oz cup of properly made espresso will have a fine layer of crema on the surface of the espresso 2 Add approximately 7 grams of coffee to the filter holder Grinder doser and measuring spoons are available from Grindmaster 3 Lightly tamp and level the grounds with even pressure Do not pack coffee into the filter WARNING Never open or remove filter holder when pressurized in group head or when brew switch is ON 7 Wait a few seconds for pressure to release Then unlock the filter holder by 4 Wipe or brush away any rotating right to left then excess grounds on the rim down and out Dump the of the filter holder used grounds out of the filter holder Espressimo 2450 amp 1750 Espresso Cappuccino Machines Page 8 How to Froth Milk Before You Start Froth milk in a stainless steel pitcher In the process of frothing the milk will double or triple in volume so be sure to use a pitcher large enough to accommodate the increased volume Cold milk will froth more easily than milk at room temperature 1 Before frothing milk point steam wand over drain pan and pull steam handle all the way down This releases any moisture which may have collected inside the steam wan
23. eased to froth or steam milk warm cups etc When steam pressure decreases to approximately 17 P S I the heater light again becomes lit indicating that the heating element is again heating water to increase steam pressure to approximately 20 P S I V Female Florefitting lt gt Permoneni Droin Drain Fitting Ya ID Flexible Drain Hose 16 It will take 30 40 minutes for water in machine to fully heat upon initial installation depending on temperature of water source 17 Cord retainers have been provided to enable power cord and water line to be lifted off of the counter To install push cord retainers into mounting holes on bottom panel as shown Snap cord and water line into cord retainer Important Note about Vacuum Breaker The vacuum breaker located under the cup warming area on the top of the machine will vent air and steam to the cup warning area upon start up If the vacuum breaker does not close then excessive steam will vent to the cup warming area To correct this remove the cover from the machine and tap the top of the vacuum breaker Power Cord a Supplied with unit lt Drain Hose Water Lines Supplied Supplied by installer with unit Page 6 Programming the Portion Buttons for 2450 Espressimo Machines Follow the above installation instructions When machine is up to operating temperature indicated by the gauge being between 10 and 20 p s i your machi
24. espresso grind coffee The manual on off may be used for custom volume brewing espresso to the desired volume and also for daily backflush cleaning of the group heads where toggling of the machine on and off is required NOTE Brew cycle is started only when button is released Failure to release the button within 5 seconds will activate the Programming Mode The brew cycle may be stopped at any time after the pre infusion cycle by pressing the brew button again As a safeguard the maximum brew time allowed for all brew cycles is 2 minutes after which the machine will terminate the brew cycle Page 7 Espressimo 2450 amp 1750 Espresso Cappuccino Machines How to Brew Espresso Before You Start Use fresh coffee beans Select a roast made especially for espresso The grind of the coffee is very important in making a good cup of espresso Proper espresso grind is a texture like fine grains of sand grind like powder is too fine Your espresso machine is pod compatible A pod is a small self contained paper filter which contains one serving of pre ground pre measured espresso roast coffee Check with your coffee vendor for availability This step by step example is for brewing a single cup of espresso 5 Attach filter holder to the group head by lining up tabs on filter holder with slots in group head Push the filter holder firmly into place and lock in by rotating left to right 1 Insert single filter into singl
25. everage Dispensers e Crathco Cold and Frozen Beverage Dispensers AMW Coffee and Tea Systems Tel 502 425 4776 Fax 502 425 4664 1 800 695 4500 USA amp Canada only P O Box 35020 Louisville KY 40232 USA www grindmaster com email info grindmaster com Grindmaster Corporation M 1994 0307 Form ES 351 08 PRINTED IN USA Part 60236
26. lter holder is locked into place under the group head double filter holder is also available 5 Back Splash Panel 6 Drain Tray Basin Drain tray can be lifted for cleaning drain basin below tray 7 Leg The machine rests on four legs 8 Left Group Head Where hot water is pressurized before going through filter holder One group head on Model 1750 9 Cover Panel Slotted stainless steel lid lifts off top of machine Slots release heat and are often used to warm cups before use 5 1 Left Automatic 8 Left Group Head 18 Filter Holder Model 2450 10 Right Automatic 9 Cover Panel 1 Auto Fill Light 12 Gauge 13 Heater Light 17 Right Group Head 10 Right Automatic Touch Pad When pressed hot water is dispensed through the filter holder and into the cup 11 Auto Fill Light A red light When lit indicates that machine needs water in boiler The light will flicker on and off as the boiler is filling with water 12 Gauge Indicates in P S I lbs per square inch steam pressure in boiler 13 Heater Light An amber light When lit indicates heat ing element is heating water in boiler 14 Steam Handle Pull down handle to release steam from steam wand 15 Main Power Switch Turns on power to machine Except Auto Fill which remains on at all times 16 Steam Wand Upon pulling steam handle steam is released from the steam wand for steaming or fr
27. machine boiler must be filled with water before turning main power switch on 1 Before operating the machine please read the operation and instruction manual Needed for installation e Access to cold water line with minimum of 30 P S I pressure drain and heavy duty grounded receptacle with its own breaker Models 2450 amp 1750 use 115V 20 AMP receptacle Q models use 230V 3 wire plus ground 20 AMP receptacle E models use 230V 15 AMP receptacles with proper plug installed by customer 1 copper tubing 4 h female flare fittings In line water filter system 34 ID flexible drain hose Remove machine from carton and position machine in operating location At this point please refer to Installation Instructions on Page 6 If there is a problem consult the Troubleshooting Guide in this manual If you cannot correct a problem call Grindmaster Corporation s Hotline for help at 800 695 4500 or 1 502 425 4776 Monday through Friday 8 A M until 8 P M EST IMPORTANT Failure to use in line water filter voids warranty Required to validate warranty See warranty for details Page 3 Espressimo 2450 amp 1750 Espresso Cappuccino Machines Understanding Basic Concepts about Brewing Espresso Cold water is put under pressure as it goes Inlet Electric Heating Coil L Steam is generated in the boiler to supply the steam wand through pump Cold water inlet line
28. ne can be programmed to release the same amount of coffee during each use 1 Place a filter in filter holder and add approximately 7 grams of espresso grind coffee Insert filter holder into group head and place a cup or container to be used for measuring under spout Program Mode Indicator Light Press and hold single portion button After Brew Indicator approximately 5 seconds both the program mode and Lights N position size red lights will flash on and off and the S machine will begin to brew espresso Continue to hold the single portion button until the desired volume is dispensed Release of the single portion button will save the portion dispensed to machine memory and brewing will be terminated On Off Manual N Brew Button Double Portion Press and release the single portion button to the brew TEN Brew Button cycle Once the button is pressed and released a Single Portion pre infusion cycle will occur for approximately 2 seconds Brew Button this will soak the bed of coffee before the pump comes on after which the pump will be turned on and Automatic Touchpad Function Layout brewing will begin Check portion size by reloading the single filter holder for a single brew The machine will dispense the pre programmed amount of Espresso and automatically shut itself off To program the double portion button repeat the above steps using the double filter holder and using approximately 14grams of
29. ng except when specified Replace all protective panels covers and warning labels Problem Possible Cause Solution No steam from steam wand No power to machine Check to make sure machine is turned on and plugged in Check outlet has power with lamp or radio Check main circuit breaker Steam wand clogged Remove tip of steam wand and clean thoroughly No pressure on gauge See section on no pressure pressure and yellow heater light is continuously on Check for water leaking from Refer to section on leaking group heads or exhaust pipe in group heads drain basin Machine is not reaching full Check for accuracy of gauge Replace gauge if faulty pressure and yellow heater light is not on Pressure control needs Adjust pressure control or adjustment replace if faulty Too much pressure Pressure Faulty pressure control Check for dry steam If steam is control is set for 17 to 20 PSI dry then replace pressure control Check steam if watery refer to steam too watery Machine is not reaching full Check for steam leaks Repair leaks Steam is too watery Float switch operating at Adjust level of float switch improper level aligning the lines on the tube and fitting Tighten fitting Reduce water level by releasing steam until red light comes on Note disconnect machine from power before replacing or adjusting Espressimo 2450 amp 1750 Espresso Cap
30. othing milk 17 Right Group Head Where hot water is pressurized before going through filter holder One group head on Model 1700 18 Filter Holder Handle and filter holder assembly for a single espresso serving Filter holder is locked into place under the group head double filter holders is also available Espressimo 2450 amp 1750 Espresso Cappuccino Machines Accessories The following accessories have been packed and shipped with the Espresso maker Single Filter Double Filter Single Filter Holder Double Filter Holder Blank filter no holes Water Fitted Used for cleaning backwashing Water machine Filter Installation Warning To prevent damage to machine boiler must be filled with water before turning main power switch ON 1 On models 2450 amp 1750 screw on legs 2 Connect drain hose to drain fitting located at bottom on front of machine 3 Place flexible drain hose into a permanent drain Make sure there are no obstructions or kinks 4 Install water filter supplied with unit Failure to use in line water filter voids warranty 5 Turn water ON and allow at least one gallon of water to flow through the tubing on the outlet side of the filter This will flush out any foreign matter that may be present When water runs clear shut water OFF 6 Connect copper tubing from filter to the flare inlet valve located underneath the machine 7 Turn main water
31. puccino Machines Page 14 Troubleshooting Guide cont d Problem Possible Cause Solution Steam too watery continued from previous page No pressure on gauge Machine will not operate Faulty float switch Leaking two way inlet solenoid No power to machine Unplug machine then check for loose wires on main switch pressure control and heaters If heater light is not on and there is electricity to the pressure control control may be faulty If heater light is on and the group heads are hot heater may be faulty If heater light is not on and there is no electricity to pressure control main power switch may be faulty No power to machine If float switch is at correct level lines are aligned on tube and fitting and red light stays on continuously then replace float switch Note Disconnect machine from power before replacing or adjusting If red autofill light is off check if two way solenoid is leaking Note Machine must have 0 pressure before disconnecting the fitting past the two way solenoid valve If fitting is leaking water then replace the two way solenoid It should normally be closed Check to make sure machine is turned on and plugged in Check outlet has power with lamp or radio Check main circuit breaker Reconnect loose wires Replace pressure control if faulty and check machine Replace main heater if faulty and check for cause of heater failure Repl
32. supply valve ON Check for leaks at fittings and connection points 8 Fully open machine valve on flare inlet by turning counter clockwise 9 Flush heat exchanger by pulling the hot water handle down and running water through the hot water spout Dispense approximately 7 1 gallon of water 10 Check to make sure main switch is OFF then plug machine into a grounded receptacle Models 2450 amp 1750 use 115V 20 AMP receptacle Q Models use 230V 3 wire plus ground 20 AMP receptacle E models use 230V 15 AMP receptacles with proper plug installed 11 Although the main switch is OFF when machine is plugged in the red light labeled AUTOFILL will light up Water will be heard filling the boiler for three to five minutes 12 When the AUTOFILL light is no longer on the boiler has filled 13 Flip the main power switch to the ON position Do not turn on until machine has completely filled Espressimo 2450 amp 1750 Espresso Cappuccino Machines 14 Flush the group heads by turning both brew switches on Let water run for approximately one minute 15 When the main power switch is placed in the ON position the amber indicator light the heater light will also go on The amber light indicates that the heating element is on heating water in the boiler to produce steam pressure The amber light will go out when steam pressure increases to approximately 20 P S I Steam pressure decreases as steam is rel
33. ure filter with holes is being used and is not clogged Clean if needed Check to verify spray deflector or group strainer is not clogged Clean or replace if needed If only one side is not working check to see if switch or solenoid valve has failed Replace if needed Check to be sure all water valves are open Machine valve water filter valve main supply valve Shut off valve preceding filter Open filter housing Open valve to check if water comes out Replace filter if needed See section on no water to machine Open hot water spout If water flow is weak slow or steamy check for closed valves or partially opened valves Check for clogged filter interruptions to water supply line or other appliances using water that may be reducing water pressure Open steam wand If steam is watery see section on steam is too watery Water leaks while brewing coffee Group head gasket has Replace gasket if needed by prying hardened or broken out Water leaking from group head or exhaust pipe in drain basin Solenoid stuck open Red autofill light stays on Water leaking from opposite side of group head in use Too much pressure Weakened solenoid springs Espressimo 2450 amp 1750 Espresso Cappuccino Machines Back wash with cleaner several times If problem continues replace solenoid Adjust pump to 125 P S I Replace solenoid valve if needed 16
34. ut air in line 8 Plug machine in and check for proper group head pressure using a pressure gauge on the filter holder Pressure should be approximately 125 PSI 9 If the pressure rate is fluctuating erratically check for erratic water pressure coming to machine Install a water pressure regulator if needed Page 12 Coffee Taste and Appearance Guide Several factors may affect the taste and appearance of a cup of espresso Time allow a single cup of espresso to brew approximately 18 23 seconds Amount of coffee use approximately 6 to 8 grams per serving Grind texture use an espresso fine grind Tamp coffee in filter holder should be lightly tamped leveled Freshness of coffee use only fresh coffee Water quality an approved water filter should be used to improve water quality Water temperature Water should be at the correct brewing temperature If your results are less than satisfactory check the following guide Check each solution separately Serving sizes in the Trouble Shooting Guide are for a single serving 17 oz 2 oz of espresso made with the single filter holder Problem Possible Cause Solution Coffee brewing too slowly Coffee brewing too quickly Little or no crema Espresso not hot enough Coffee taste unsatisfactory Page 13 Coffee packed too tightly Grind texture is too fine Used too much coffee Not enough coffee used Grind texture is too
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