FBD 77 Series Installation & Operation Manual
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FBD 77 Series Installation & Operation Manual

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77X SERIES
INSTALLATION &
OPERATION MANUAL
MODELS
771/772/773/774
24-77XM-0001_01

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  • Page 1 77X SERIES INSTALLATION & OPERATION MANUAL MODELS 771/772/773/774 24-77XM-0001_01...
  • Page 2 FBD parts, equipment or any delay with respect to its delivery.

  • Page 3: Table Of Contents

    77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS TABLE OF CONTENTS 1. SAFETY ............................ 3 1.1 ELECTRICAL ........................3 1.2 COMPRESSED GASES ......................3 1.3 GENERAL PRECAUTIONS ....................3 2. SPECIFICATIONS AND REQUIREMENTS ................. 4 2.1 GENERAL REQUIREMENTS ....................4 2.2 ELECTRICAL REQUIREMENTS .....................4 2.3 DIMENSION AND WEIGHT SPECIFICATIONS ...............5 3.
  • Page 4 77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS TABLE OF CONTENTS (CONTINUED) 7.10 SETTINGS MENU ......................25 7.11 CLOCK AND SCHEDULE MENU ..................28 7.12 DATE AND TIME MENU ....................28 7.13 DEFROST SCHEDULE MENU................... 29 7.14 AUTO DEFROST MENU ....................29 7.15 WAKE/SLEEP SCHEDULE MENU ..................

  • Page 5: Safety

    77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS 1. SAFETY 1.1 Electrical This dispenser must be properly electrically grounded to avoid possible fatal electrical shock or serious injury to the operator. The power cord is provided with a three-prong grounded plug. If a three-hole grounded electrical outlet is not available, use an approved method to ground the dispenser.

  • Page 6: Specifications And Requirements

    77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS 2. SPECIFICATIONS AND REQUIREMENTS 2.1 General Requirements Requirement Syrup Supply Pressure 70 - 72 PSIG* (483 - 496 kPag) 30 PSIG (207 kPag) Minimum Flowing Pressure Water Supply Pressure 70 PSIG (483 kPag) Maximum Static Pressure Gas Supply Pressure 70 - 72 PSIG (483 - 496 kPag) 3”...

  • Page 7: Dimension And Weight Specifications

    77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS 2.3 Dimension and Weight Specifications Multi-Flavor Dispensers Specification 771 MFLV 772 MFLV Width 17.0” (432 mm) 17.0” (432 mm) Depth 32.5” (826 mm) 32.5” (826 mm) Height - Short Door 34.0” (864 mm) 34.0”...

  • Page 8: Receiving And Unpacking Dispenser

    77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS 3. RECEIVING AND UNPACKING DISPENSER 3.1 Receiving Each dispenser is tested and thoroughly inspected before shipment. At the time of shipment, the carrier accepts the dispenser and any claim for damages must be made with the carrier. Upon receiving the dispenser from the delivering carrier, carefully inspect carton for visible indication of damage.

  • Page 9: Installation For Easier Service

    Figure 4.2. The dispenser must be properly installed to take advantage of these features. Use the straight fittings found in standard FBD dispenser install kits (sold separately) when connecting the water, CO2 or N2 gas, and syrup lines to the dispenser.

  • Page 10: Self-Contained Refrigeration Models

    An ambient temperature of no more than 75°F (24°C) provides the optimal capacity. As the ambient temperature increases, the dispenser capacity decreases. It is essential that the HVAC system be sized to handle the additional heat load from all self-contained, air-cooled dispensers. If ambient heat is a concern, FBD recommends a remote-condensing dispenser. 4.5 Remote-Condensing Models Remote-condensing models utilize a condenser assembly external to the building and are designed for ambient temperatures from -10°F to 120°F (-23°C to 49°C).

  • Page 11: Connecting To Electrical Power

    77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS Multi-drink functionality is accessed through the menu which allows the drink type (as defined by expansion) to be selected for each barrel. The drink types available are dependent on which gas is currently selected for “Gas 1” or “Gas 2” (where applicable).

  • Page 12: Supply Connections

    PANTONE BLACK C BRUSHED SILVER MAIN GAS Created 01/27/17 (Rev D), ECN 17-095 *Contact FBD Engineering Department for digital artwork files of layout with color specifications. universal gas configurations. Can be compressed air, CO2 or N2. SYRUP 3 Artwork for 24-2403-0001_D...

  • Page 13: Connecting To Water Supply

    Note: According to the National Sanitation Foundation (NSF), an ASSE 1022 approved backflow prevention device must be installed on the water supply line before connecting to the dispenser. If needed, one can be purchased from FBD under part number 12-2272-0001. The backflow device must have a line connected to the vent that diverts any flow to a drain.

  • Page 14: Starting Up The Dispenser

    77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS 5. STARTING UP THE DISPENSER 5.1 Leak Check and Prime Remove the side panels by loosening the two screws located at the bottom of the panel and then lifting off the frame. Remove the drip tray by lifting up and pulling away, then remove access panel to expose the solution modules.

  • Page 15: Initial Power Up

    77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS 5.2 Initial Power Up Plug the dispenser into the power supply and verify the dispenser turns on by looking at the LCD located behind the merchandiser. The display should be on the home screen showing the status of the barrels (see Section 7 for additional information on keypad buttons and how to navigate through menus).

  • Page 16: Water Flow Rate And Brix

    77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS 5.3 Water Flow Rate and Brix The water flow rate and brix for each barrel must be verified and adjusted for optimal performance. Use the following procedure to adjust the water flow rate and set the brix for each barrel: Turn the syrup shutoff valve to the off position (Figure 5.2).

  • Page 17: Filling Barrel And Starting

    77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS 5.4 Filling Barrel and Starting The barrel, or freeze chamber, must be purged of air before filling with product. Purge the air by activating the gas solenoid and then using the relief valve on the faceplate (Figure 5.3) to relieve air until all air has been displaced by gas*. Failure to displace the air with gas will result in poor drink quality.

  • Page 18: Dispenser Operation

    77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS 6. DISPENSER OPERATION 6.1 Freeze To freeze the product, press the up or down arrows on the keypad to select the desired barrel, then press the green check button and select ON. If the product is liquid, it will take four to ten minutes per barrel (depending on temperature of product) to complete the initial freeze cycle.

  • Page 19: Drink Too "Firm" Or Cold

    77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS 6.4.1 Drink Too “Firm” or Cold A drink that is over-frozen will tend to be very cold, below 22°F (-5.5°C), and can be considered hard and difficult to suck through a straw. It can also be lighter in weight than a properly frozen drink and tends to collapse in the cup after being dispensed.

  • Page 20: Menus And Navigation

    77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS 7. MENUS AND NAVIGATION 7.1 Keypad The keypad is the user interface point and allows for control of the dispenser and navigation of the menus. Please review the keypad layout (Figure 7.1) to familiarize yourself with the interface. Up/Down Navigation Buttons...

  • Page 21: Home Menu

    77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS 7.2 Home Menu The home menu (Figure 7.1) shows the status of all barrels, allows control of all barrels, and is the launching point to the submenus. Press the green button while a barrel is highlighted to perform actions to that barrel such as defrost or turn on/ off.

  • Page 22: Menu Tree

    77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS 7.4 Menu Tree The menu is divided up into two levels. The first level is the “store level” intended for the store operator. The second level is the “service level” intended only for trained service technicians. Below is a visual representation of the menu tree. For more information about each menu, see the sections that follow.

  • Page 23: Main Menu

    77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS 7.5 Main Menu The MAIN MENU (Figure 7.4) allows the user to: • View the readouts (pressures, temperatures, etc). • Access the fault code history. • Access the SERVICE MENU. • Set a language. Figure 7.4 7.6 Readouts Menu The READOUTS menu shows the current status of all temperature and pressure sensor readings, line voltage and other...

  • Page 24: Fault Code History Menu

    77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS 7.7 Fault Code History Menu The FAULT CODE HISTORY menu provides a list of the last twenty fault codes with the date and time of occurrence and resolution (Figure 7.8). When the green button is pressed, additional details about the highlighted error are shown, including a QR code (Figure 7.9).

  • Page 25: Maintenance Menu

    77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS 7.9 Maintenance Menu The MAINTENANCE MENU has three sections to choose from (Figure 7.11): PURGE/FILL/DRAIN BARREL, WATER AND BRIX CALIBRATION, and LINE VOLTAGE CALIBRATION. PURGE/FILL/DRAIN BARREL (Figure 7.12) – Provides three semi-automatic routines that eliminate the need to manually turn solenoids on and off.
  • Page 26 77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS WATER AND BRIX CALIBRATION (Figure 7.13) – Provides a step-by-step process for calibrating the flow controls for the solution modules. Images and instructions are provided in each step. Figure 7.13 LINE VOLTAGE CALIBRATION (Figure 7.14) – Calculates the voltage offset. To use this function, first measure the line voltage on the contactor with a voltmeter, then enter that value into the menu.

  • Page 27: Settings Menu

    77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS 7.10 Settings Menu The SETTINGS menu (Figures 7.15 and 7.16) provides dispenser information and access to some settings that are adjustable. Available settings options change based on dispenser software. • SERIAL #: Set the serial number of the dispenser (this is used for BevTrak reporting).
  • Page 28 77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS GAS CONFIGURATION: • For standard dispensers with no multi-gas or multi-drink functionality (Figure 7.17) this is the gas (CO2 or NITROGEN as determined by dispenser configuration) that is used for operating the water pump, active charge system, and the gas that will be injected into the barrels.
  • Page 29 77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS EXPANSION ADJUSTMENT (Figure 7.20) - The amount of gas in the drink can be adjusted in this menu. The adjustment ranges from “MAX” (high levels of gas, high expansion) to “LESS” (lower levels of gas, low expansion). Select the barrel number and adjust the bar graph up or down.

  • Page 30: Clock And Schedule Menu

    77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS 7.11 Clock and Schedule Menu The CLOCK AND SCHEDULE menu contains various submenus shown in Figure 7.22. Figure 7.22 7.12 Date and Time Menu The dispenser date and time is set in this menu. The time is in 24 hour format. The Daylight Saving Time (DST) feature can also be activated and the start and end dates are adjustable.

  • Page 31: Defrost Schedule Menu

    If the day of the week is lowercase then the dispenser will skip that defrost time on that day. There are also predefined defrost schedules available. Contact FBD for details on the various schedules. Figure 7.24 7.14 Auto Defrost Menu...

  • Page 32: Wake/Sleep Schedule Menu

    77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS 7.15 Wake/Sleep Schedule Menu The wake/sleep feature (Figure 7.26) makes the dispenser wake up and go to sleep automatically. This feature is useful for locations that are closed overnight. The wake and sleep times can be different for each day of the week or common for all days.

  • Page 33: Bevtrak

    7.17 BevTrak Menu BevTrak is a reporting system for FBD beverage equipment. It allows the equipment owner to monitor the status and sales performance of their dispenser via an internet browser. BevTrak connects to the internet through Wi-Fi connections. If the dispenser comes with BevTrak capability, the BEVTRAK menu (Figure 7.30) will show “Yes”...

  • Page 34: Machine Totals Menu

    77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS 7.19 Machine Totals Menu The MACHINE TOTALS menu (Figure 7.34) provides various totals that the dispenser records such as the number of compressor cycles or operating time for various components. This information can be useful when evaluating the throughput or diagnosing problems with the dispenser.

  • Page 35: Diagnostics Menu

    77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS 7.21 Diagnostics Menu The DIAGNOSTICS MENU (Figure 7.36) is a powerful feature of the 77X dispensers. Any time a malfunction is suspected, the best option for the service technician is to first run the diagnostic sequence for the system involved. This can eliminate hours of guesswork and parts swapping.

  • Page 36: Cleaning And Sanitizing

    Failure to properly clean and sanitize the dispenser can negatively affect components, drink quality, and dispenser operation. FBD recommends that the dispenser be sanitized annually or when the dispenser has been non-operational for an extended period of time.
  • Page 37 77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS Once the barrel has defrosted, navigate to the MANUAL ON/OFF menu located in the SERVICE MENU section and activate both the gas and solution solenoids for the barrel to be sanitized. Place a large container under the dispensing valve and drain the barrel. Activating the beater motor will facilitate draining the barrel when near empty.

  • Page 38: Preventive Maintenance

    771/772/773/774 MODELS 9. PREVENTIVE MAINTENANCE An annual preventive maintenance schedule is recommended by FBD and should include the following steps: Check the Fault Code History in the menu (Section 7.7). If there are repeated beater low errors, inspect blades for damage (chips, cracks, warping, excessive wear) and dullness. The blade edge should be sharp and smooth.

  • Page 39: Rear Seal Replacement

    The motor rear seals must be replaced annually. Failure to do so will result in rear seal leaks and potential motor failures. If the dispenser has been in storage for longer than 90 days, FBD recommends that the rear seals be replaced. The rear seal can be replaced from the front of the dispenser.

  • Page 40: Backflow Preventer Maintenance

    77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS 9.3 Backflow Preventer Maintenance The strainer portion of the backflow preventer must be removed and cleaned on an annual basis. To clean the device, turn off the water supply and unscrew the filter housing (Figure 9.2). Clean any debris and replace the strainer. Turn the water supply back on when finished.

  • Page 41: Troubleshooting

    77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS 10. TROUBLESHOOTING 10.1 Home Menu Messages The dispenser will always display a message on the home screen with the status of the dispenser. These may be normal operation messages, depleted supply messages or error messages. Message Meaning Action...
  • Page 42 77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS Message Meaning Action WAITING TO FREEZE Barrel is ready to freeze but is Wait until other barrel(s) have waiting on other barrel(s) to completed the defrost cycle. complete defrost. WATER OUT Water supply turned off. Restore water supply.

  • Page 43: Fault Codes

    77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS 10.2 Fault Codes The dispenser records all errors, or faults, that occur. A history of these faults can be found in the FAULT CODE HISTORY menu located in the SERVICE MENU. Each error has a three-digit number associated with it. The first two digits are the error number and the third digit indicates the barrel number with the error.
  • Page 44 Error #070: Compressor Ran Too Long The compressor ran continuously for more than 90 minutes. Is the location an extreme volume venue such as a festival? If so, contact FBD service for instructions on adjusting the timer. Run the refrigeration diagnostic sequence to determine the reason for the failure.
  • Page 45 200 volts and shut down the dispenser. Note: For optimal performance and to avoid component failures, FBD recommends dispenser be supplied with 230 VAC ± 10%.
  • Page 46 77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS Error #190: HPSI Transducer The high side refrigeration pressure is not reading correctly. Ensure the pressure transducer is plugged in. Replace the transducer if faulty. Error #200: Return Temperature Sensor The refrigeration return (suction) temperature sensor is not reading correctly. Ensure the temperature sensor is plugged in.
  • Page 47 77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS Error #270: Air Out The compressed air pressure is less than 45 PSIG (310 kPag). Verify there is a supply of compressed air. Ensure the compressed air shutoff valve at the back of the dispenser is not turned off. Ensure the gas pressure transducer is connected and working properly.
  • Page 48 77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS Error #351, 352: Flavor Out 1 Error #361, 362: Flavor Out 2 Error #371, 372: Flavor Out 3 Error #381, 382: Flavor Out 4 The pressure for flavor syrup is less than 45 PSIG (310 kPag), where the “Out” number represent the flavor number. Replace the empty BIB.
  • Page 49 77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS Error #430: Gas #2 - CO2 Out The CO2 pressure is less than 45 PSIG (310 kPag) for barrel 2. Replace or refill the CO2 tank. Ensure the CO2 shutoff valve at the back of the dispenser is not turned off. Ensure the CO2 pressure transducer is connected and working properly.

  • Page 50: Diagnostic Fault Codes

    77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS 10.3 Diagnostic Fault Codes The following codes are faults that can be displayed after running a diagnostic sequence. Error #500: Fan Not Turning On Remove control board and check for a blown fan fuse (F1 and F2). A fan or capacitor malfunction may be caused by a blown fuse.
  • Page 51 77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS Compressor Winding Resistance Model C - R C - S Copeland 0.94-1.08 2.12-2.44 ZB15KCE-PFV Copeland 0.84-0.97 2.52-2.90 ZB19KCE-PFV Error #521, 522, 523, 524: Refrigeration Solenoid Stuck Open Error #531, 532, 533, 534: Defrost Solenoid Stuck Open Verify the solenoid is not activated by going to the MANUAL ON/OFF menu.
  • Page 52 77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS Error #591, 592, 593, 594: Gas Solenoid Not Opening Disconnect the electrical harness from the gas solenoid for the barrel in question. Manually activate the solenoid and check to make sure there is 12 VDC at the connection (the voltage will read ~2 VDC when not powered).

  • Page 53: Diagrams And Schematics

    77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS 11. DIAGRAMS AND SCHEMATICS 11.1 Mounting Templates To permanently secure the dispenser to a countertop, use the provided mounting diagrams (Figures 11.1 - 11.3) to drill mounting holes into the countertop. Next, place the dispenser in position and install bolts from the underside of the countertop into the threaded bosses in the frame.
  • Page 54 77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS 1.06 20.25 [ 27.0 ] [ 514.4 ] 18.13 [ 460.4 ] (4) TAPPED MOUNTING HOLES SIDE PANELS 20.00 [ 508 ] 32.5 [ 825.3 ] FRAME 1.75 [ 44.5 ] 8.56 [ 217.5 ] 10.31 DRIP TRAY [ 261.9 ]...
  • Page 55 77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS 1.06 26.00 [ 27.0 ] [ 660.4 ] 23.88 [ 606.4 ] 11.94 [ 303.2 ] (6) TAPPED MOUNTING HOLES SIDE PANELS 32.5 [ 825.3 ] FRAME 20.00 [ 508 ] 1.75 [ 44.5 ] 8.56 [ 217.5 ] DRIP TRAY...

  • Page 56: Flow Diagrams (Multi-Flavor Dispensers)

    77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS 11.2 Flow Diagrams (Multi-Flavor Dispensers) Figure 11.4 shows the plumbing diagram for the 771 multi-flavor dispenser. Figure 11.5 shows the plumbing diagram for the 772 multi-flavor dispenser. SHUTOFF MAIN VALVE VARIABLE RESTRICTION PUMP GAS 1 CHECK VALVE...
  • Page 57 77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS FLAVOR MODULE L E G E N D VARIABLE CHECK SHUT-OFF PUMP VALVE RESTRICTION VALVE FLAVOR MODULE SOLENOID PRESSURE VALVE VALVE TRANSDUCER FLAVOR QUICK MODULE PRESSURE EXHAUST RESTRICTOR REGULATOR VALVE FLAVOR MODULE SOLUTION SAMPLE MODULE SOLUTION...

  • Page 58: Flow Diagrams (Standard Dispensers)

    77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS 11.3 Flow Diagrams (Standard Dispensers) Figure 11.6 shows the plumbing diagram for the standard 774 dispensers and is representative of the standard 772 and 773 dispensers with the exception of the number of barrels. SOLENOID VALVE SOLUTION...

  • Page 59: Electrical Wiring Diagrams (Multi-Flavor Dispensers)

    77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS 11.4 Electrical Wiring Diagrams (Multi-Flavor Dispensers) Figures 11.7 through 11.9 show the electrical wiring diagrams for 771 & 772 multi-flavor dispensers. The diagrams show the 772 multi-flavor model and is representative of the 771 and 772 multi-flavor dispensers with the exception of the number of barrels.
  • Page 60 77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS NOTE: DIAGRAM SHOWN FOR 772 MULTI-FLAVOR 4MFD 4MFD Figure 11.8 Electrical Diagram for 771 and 772 Multi-Flavor Dispensers 2 OF 3...
  • Page 61 77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS NOTE: DIAGRAM SHOWN FOR 772 MULTI-FLAVOR Figure 11.9 Electrical Diagram for 771 and 772 Multi-Flavor Dispensers 3 OF 3...

  • Page 62: Electrical Wiring Diagrams (Standard Dispensers)

    77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS 11.5 Electrical Wiring Diagrams (Standard Dispensers) Figures 11.10 through 11.12 show the electrical wiring diagrams for the standard 774 dispenser and are representative of the standard 772 and 773 dispensers with the exception of the number of barrels. NOTE: DIAGRAM Harness Functions Harness Functions...
  • Page 63 77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS FAN - L2 FAN - L1 BTR 1 - L2 NOTE: DIAGRAM SHOWN FOR 774 Figure 11.11 Electrical Diagram for Standard 772, 773, and 774 Dispensers 2 OF 3...
  • Page 64 77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS 24 VAC CO2 1- RTN DEF 1 - RTN 12 VDC CO2 2 - RTN REF 1 - RTN DEF 2 - RTN CO2 3 - RTN 12 VDC CO2 4 - RTN SOL 4 - RTN 24 VAC 24 VAC...

  • Page 65: Refrigeration Schematic Diagrams (Multi-Flavor Dispensers)

    77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS 11.6 Refrigeration Schematic Diagrams (771 MFLV and 772 MFLV Dispensers) Figure 11.13 shows the refrigeration schematic diagram for the 771 multi-flavor dispenser (air-cooled). Figure 11.14 shows the diagram for the 772 multi-flavor dispenser (air-cooled). TUBE-TO-TUBE HEAT EXCHANGER PRESSURE...
  • Page 66 77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS DEFROST VALVE & SOLENOID EXPANSION VALVE & SOLENOID Figure 11.14 Refrigeration Schematic for 772 Multi-Flavor Air-Cooled Dispenser...

  • Page 67: Refrigeration Schematic Diagrams (Air-Cooled Dispensers)

    77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS 11.7 Refrigeration Schematic Diagrams (Air-Cooled Dispensers) Figure 11.15 shows the refrigeration schematic for the standard 773 air-cooled dispenser and is representative of the standard 772 with the exception of the number of barrels. Figure 11.16 shows the diagram for the standard 774 air- cooled dispenser.
  • Page 68 77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS DEFROST VALVE & SOLENOID TEMPERATURE EVAPORATOR PRESSURE EVAPORATOR EVAPORATOR EVAPORATOR EXPANSION VALVE & SOLENOID Figure 11.16 Refrigeration Schematic for 774 Standard Air-Cooled Dispenser...

  • Page 69: Refrigeration Schematic Diagrams (Remote Condensing Dispensers)

    77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS 11.8 Refrigeration Schematic Diagrams (Remote Condensing Dispensers) Figure 11.17 shows the refrigeration schematic for the standard 774 remote condensing dispenser and is representative of the standard 772 and 773 with the exception of the number of barrels. DEFROST VALVE &...

  • Page 70: Refrigeration Schematic Diagrams (Water-Cooled Dispensers)

    77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS 11.9 Refrigeration Schematic Diagrams (Water-Cooled Dispensers) Figure 11.18 shows the refrigeration schematic for the standard 772 water-cooled dispenser. Figure 11.19 shows the refrigeration schematic for the standard 773 water-cooled dispenser, and Figure 11.19 shows the refrigeration schematic for the standard 774 water-cooled dispenser.
  • Page 71 77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS DEFROST VALVE & SOLENOID EXPANSION VALVE & SOLENOID Figure 11.19 Refrigeration Schematic for 773 Water-Cooled Dispenser...
  • Page 72 77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS DEFROST VALVE & SOLENOID EXPANSION VALVE & SOLENOID Figure 11.20 Refrigeration Schematic for 774 Water-Cooled Dispenser...
  • Page 73 77X INSTALLATION & OPERATION MANUAL 771/772/773/774 MODELS NOTES FBD TECHNICAL SUPPORT: 866-323-2777 or www.fbdfrozen.com...

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