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Wunder-Bar JoeTap NITCOM, Repair Manual

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Wunder-Bar JoeTap NITCOM Repair Manual Download Page 83

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4.

 

Remove the Controller board from the enclosure by removing the screws holding it in place. 

See Figure K4.

 

5.

 

Unplug the connectors on the existing/old board and connect it onto the new/replacement board one at a time.

 See 

Figure K4.

 

6.

 

Secure the new board to the bottom piece of the Controller Board Enclosure. 

See Figure K4.

 

 

 

7.

 

Insert the grommets on the harness into the appropriate slots in the bottom piece of the Controller Board Enclosure.

 

See Figure K5.

 

8.

 

Install the top piece of the Controller Board to align the two halves. 

See Figure K6.

 Ensure the grommets on the 

harness does not pop out so it is properly sealed.

 

 

Screws 

Figure K3: Control Board Enclosure screws shown. 

 

Figure K4: Control Board shown installed inside Control Board Enclosure. 

 

Summary of Contents for JoeTap NITCOM

Page 1: ...Page 1 JT TFN20M07 110 JoeTap NITCOM Repair Manual 110V JoeTap NITCOM Repair Manual 110V Rev C ...

Page 2: ...Door Coming Off Page 42 Symptom 15 Fridge LED UI Not Working Page 42 Appendix A Oetiker Clamp Application Page 54 Appendix B John Guest Troque Settings Page 54 Appendix C JoeTap NITCOM Wiring diagram Page 55 Appendix D John Guest Speed Fit Guide Page 56 Appendix E Software Update Instructions Page 57 Appendix F Flowmeter Solenoid Module Replacement Page 59 Appendix G Nitrogen Line Solenoid Replace...

Page 3: ...to check the connections to the plug as seen in Figure 1b Refer to Appendix C JoeTap NITCOM Wiring Diagram for full wiring diagram b If the system is getting power Fridge light fan fridge controller is on and the screen is OFF i Open the door and remove the screen cover and foam to verify that the Display Power Supply Harness is plugged in See Figure 2a If the Display Power Supply Harness is under...

Page 4: ...r cycle the unit If the screen does not respond nothing is seen on the screen then replace the screen If the screen is initially turning on then going to a black screen appears to be off but is actually on with a black screen there may be an issue with the Ethernet Cable or there is a Software bug If all the wires are plugged correctly and not damaged verify that the ethernet cable is undamaged By...

Page 5: ...ff a DVOM can also be used to verify that the Power Supply output V and V have a 24VDC output See Figure 5 c Verify the power input terminal on the PCB itself If there is power at the Power Supply Output but not at the PCB the harness is damaged and needs to be replaced See Figure 5 d If the Power Supply output does not have power check the Power Supply input by probing between the L and N termina...

Page 6: ...ning ethernet cable would be easiest way to check 4 If ethernet cable is functional and the screen is getting the power then replace the screen Symptom 2 Unit Stuck in Cleaning Cycle 1 Remove Rear Enclosure Cover panel by removing the four screws holding it to the Rear Enclosure two on either side 2 Verify that the Solenoid Harness is plugged in correctly Refer to Appendix C JoeTap NITCOM Wiring D...

Page 7: ...ule and verify the functionality of the Flowmeter again Refer to Appendix F Flowmeter Solenoid Module Replacement for procedure 8 Verify that the Flowmeter is functioning as seen in step 4 above If the TOTAL DISPENSED AND DISPENSE RATE readings are changing verify the problem is fixed by running the cleaning cycle again 9 If updating the software Solenoid Harness is plugged in correctly and replac...

Page 8: ...efer to Appendix F Software Update c If there is a voltage reading but is on incorrect setting remove the Rear Enclosure Cover Panel and locate the potentiometer on the power supply Turn the potentiometer with a Phillips Head Screwdriver to adjust the voltage to 24V with a tolerance of 0 5V See Figure 14 Voltage Setting Value Tolerance Units Probe Points 24V power 24 0 5 Volts Screen Harness Green...

Page 9: ...he DVOM is not at approximately 24VDC the Power Supply may be damaged and needs to get replaced Verify the input is getting approximately 120VAC with use of DVOM and follow the High Voltage Power Harness to ensure it is not damaged if input does not have correct voltage coming in See Figure 15 Refer to Symptom 1 Screen Blackout Step 2 to verify the Power Supply is malfunctioning and replace if nec...

Page 10: ...ee Figure 18a and Figure 18b 3 Next verify that the PCB has LED Lights on if it is not on check the harness from the power supply to the PCB is not broken This can be verified by probing the Power Supply Output and the PCB Power Input Terminal See Figure 15 Ethernet Cable Figure 18a Ethernet Cable Shown Old Configuration Figure 16 Communication Down Screen Figure 18b Ethernet Cable Shown New Confi...

Page 11: ...ed allowing keg to build pressure 3 Verify the keg has product in it 4 Verify the filter is cleaned 5 Check product line for any blockage 6 Depressurize the unit and Remove faucet nozzle and check restrictor plate for blockage See Figure 19 7 Remove the Rear Enclosure Cover and verify that the solenoid is not stuck close If the solenoid is stuck close there will be no product past the Solenoid Vis...

Page 12: ...on the keg is closed 2 Verify the filter is cleaned 3 Check if the pressure readings are updating on the Touch Screen a Select Machine Info from the Home Page to see the pressure readings from the Pressure Transducers See Figure 21a and Figure 21b b Turn the Regulator Knobs on top of the Rear Enclosure while monitoring the touch screen See Figure 21c c If pressure is not changing on the screen whe...

Page 13: ...rm water through system until warning goes away c If warning continues after extensive warm water pour follow step below to adjust the pressure delta i Press SETTINGS on the main menu screen See Figure 24a ii Enter code 2186 and press the green ENTER icon See Figure 24b iii Press PRODUCTION TOOLS See Figure 24c iv Enter same code 2186 and press the green ENTER icon See Figure 24b v The DELTA FILTE...

Page 14: ...ee Figure 25a Symptom 8 Incorrect Foam Level 1 If foam level is too high low check the pressure setting and set it to the settings as shown in table 1 If the foam height is between then the system is functioning properly If customer requests more foam still adjust the nitrogen pressure up If the customer requests less foam still adjust the nitrogen pressure down See Figure 26 Pressure Setting Nomi...

Page 15: ...m level is too LOW pressure settings are nominal and restrictor plate is clean then check the Check Valve at the tower See Figure 28a If the Check Valve is accessible without removing the tower do so if the tower has to be removed refer to Appendix I Disassembling The Tower Verify that the Arrow on the Check Valve is facing the up towards the Venturi If the Arrow was facing the wrong way correct t...

Page 16: ...e Figure 31 h If Nitrogen is flowing through the faucet then the Solenoid is fully functional If there is no Nitrogen Flowing replace the Nitrogen Line Solenoid Refer to Appendix H Nitrogen Line Solenoid Replacement for procedure 6 If there is no clog found coffee grounds or ice formation Nitrogen Pressure can be adjusted the readings on the Touch Screen respond to adjustments Nitrogen Solenoid is...

Page 17: ... and pressurize system to verify the leak has stopped 2 If leak is from a push to connect fitting a Push the tube stem further into the push to fit fitting b If the tubing stem pushes in further then connect a keg filled with water and pressurize system to verify the leak has stopped c If fitting is leaking still replace the fitting See Appendix D John Guest Speed Fit Guide for reference 3 If leak...

Page 18: ...in place Ensure that the nozzle opening is facing downwards Insert the pin on the Faucet Wrench in the opening on the Shank Nut and apply leverage to tighten the Shank Nut See Figure 35 Figure 35 Install Faucet with Nozzle facing downwards Tighten the Shank Nut with Shank Wrench Nozzle Opening pointing Downwards Faucet Wrench Ensure O Ring is Present Figure 34 Faucet O Ring Leak from this Connecti...

Page 19: ...See Figure 36 c Remove the Faucet from the tower d Rotate the Silver Threaded Collar directly beneath the Black Spacer to disassemble the Faucet See Figure 37 e Pull the Faucet apart See Figure 38 Replace faucet diaphragm if leak is coming from this location Figure 36 Black Spacer Shown Rotate Silver Threaded Collar Figure 37 Silver Threaded Collar Shown Figure 38 Faucet pulled apart and Diaphragm...

Page 20: ...gure 40 3 Leak Inside Tower Refer to Appendix I Disassembling The Tower to see how to disassemble and reassemble the Tower if necessary Refer to Figure 41 to help identify fittings After a fix before reassembling the Tower it is recommended that you test the tower assembly outside the tower Hook up a keg filled with water and pressurize system to verify the leak has stopped The fittings inside the...

Page 21: ...Tower See Figure 42 ii If the Stainless Steel elbow is damaged replace the entire elbow Refer to Appendix I Disassembling The Tower to see how to disassemble and reassemble the Tower See Figure 42 b BSPP x Push to Fit Adaptor Fittings The BSSPP X Push to Fit Adaptor Fitting can leak from two locations the threaded end and the Push To Fit end 2 Way Divider BSPP x Push to FIT Adaptor Fittings Black ...

Page 22: ...leak is found try to push the connecting stem or tube in further into the connection See Figure 41 If pushing the tube stem further in does not resolve the leak replace the Nitro Tower Tubing Assembly Refer to Appendix I Disassembling The Tower to see how to disassemble and reassemble the Tower e Check Valve The Check Valve can leak on either side verify which side the leak is coming from i If the...

Page 23: ...eel it push past the O Ring The tubing must be seated past the O ring within the check valve See Appendix D John Guest Speed Fit Guide for reference d Replace red clip where the tubing and check valve meet Symptom 11 Gas Leak Generator keeps Turning On 1 Check the connection at the Nitrogen Generator to make sure that it is not that the source of the leak 2 Once verified that leak is in the NITCOM...

Page 24: ...ly soap and water to each joint inside the Rear Enclosure starting at the input a Remove Rear Enclosure and Check inside the Rear Enclosure b Spray each connection point with Soap solution and check for bubbles i Leak from threaded fittings Pressure Regulator Remove the Pressure Regulator and replace the fitting Apply 3 layers of Teflon tape in clockwise direction and tighten the fitting to proper...

Page 25: ...e all connections checked with Soap Water once test is complete iv Check the Pressure Transducer itself for leak Cut the cable tie holding the Pressure Transducer against the foam so soap water can be applied around the barb connection on the Pressure Transducer Board Check one pressure transducer at a time and immediately wipe all the Soap Water once test is complete See Figure 50 If leak is foun...

Page 26: ...he White LLDPE Tubing is inserted into the Check Valve See Figure 52 Figure 52 Check Valve Leak Test Location Figure 51a Pressure Regulator Leak test location on the outside of the Rear Enclosure Figure 51b Pressure Regulator Leak test location on the inside of the Rear Enclosure ...

Page 27: ...y the display board will flash the current set point See Figure 53 Press the key to increase the temp and key to decrease the temp Range will be 34 to 60 The display will blink while setting the temperature After 5 seconds display will show ON See Figure 53 b Set the temperature to 38 3 Verify that the Setpoint Temperature is in the correct unit a Press the and key together for 5 seconds the displ...

Page 28: ...ey to adjust the Defrost Duration to 60mins See Figure 58 d Defrost Period CU Press the key once it will display the CU means Accumulation Then press the key once again it will display 00 99 minutes of current Defrost Period Press the and key to adjust Defrost Period to 06 See Figure 59 e Offset Temperature set HF Press the key once again it will display the HF means set Offset Temperature Press t...

Page 29: ...displayed This would indicate there is a fault with the Fridge Main Controller Board replace the Fridge Main Controller Board See Appendix K Fridge Controller Board Replacement Procedure for directions iv Last check is for a 3 minute delay BR would be displayed This would indicate there is a fault with the Fridge Main Controller Board replace the Fridge Main Controller Board See Appendix K Fridge ...

Page 30: ...ee Figure 63 The best option would be to put it in an ice water bath which would be at approximately 32 F Please note that it will take a few minutes for the thermistor to reach the same temperature as the water in the ice bath d Get the Current Temperature Reading from the Fridge i Press the key for more than 5 seconds the display board will enter the service menu and will display Ct means Curren...

Page 31: ...play should read ON See Figure 65 for summary of the settings Setting Value Setpoint 38F Defrost Duration dF 60mins Defrost Period CU 06mins Offset Temperature set HF 32 Ct reading at 00 Offset 2 8 Verify Inverter Is Working a Verify if the inverter is faulty i Unplug the unit and plug it back in note that there is a 5 minute delay to protect the compressor from short cycling If the refrigerator i...

Page 32: ... on the Compressor and fans note that when the board is sending a signal to the compressor there is a dot on the 7 segment LED that illuminates almost like a decimal dot after the 2nd character This is also true for regular operation not just test mode Pressing the icon you can turn them off vi Remove 5 lower back panel screws See Figure 67 vii Place hand on compressor to feel if it is running may...

Page 33: ...Page 33 Push tab to remove inverter cover See Figure 70 ix Remove Philips screw with tool from wire strain relief block See Figure 71 Figure 69 Screw shown Figure 70 Tab shown Figure 71 Screw shown ...

Page 34: ...d 72b Check line voltage this is constantly energized from power harness should be 120 V See Figure 73 Unplug light blue wire using tab to release See Figure 74a and Figure 74b Figure 72a Power connections being removed Figure 72b Power connections shown removed Figure 73 Line Voltage being probed Figure 74a Line Voltage being probed Figure 74a Line Voltage being probed ...

Page 35: ... board xi Remove Inverter if it is the problem Locate screw for ground strain relief and final mounting screw Remove with longest length tool See Figure 76 Lift and rotate inverter off the compressor See Figure 77 Remove ground wire to get better access to inverter connection to the compressor See Figure 78a and 78b Figure 75 Voltage being probed Figure 76 Screws shown Figure 77 Inverter being rem...

Page 36: ...Green W Yellow b P Power Line voltage Black c Neutral white d Signal Light blue Again ensuring the blue dot is present on the UI check all three posts against the ground for voltage 120v See Figure 81a 81b and 81c Figure 78a Ground wire being removed Figure 78 Ground Wire shown removed Figure 79a Compressor connections shown Figure 79b Compressor connections removed Figure 80a Inverter connections...

Page 37: ...e of refrigerant charge See Figure 82 b If all the equipment on the Fridge is working properly but it is not cooling down check the Fridge does not have too high or too low of an Amp draw i Unplug the Fridge then remove the Rear Enclosure Panel to locate the Power Supply and disconnect the Spade Connectors from the L Terminal the N Terminal and the Ground Terminal and wrap it all individually in e...

Page 38: ... it will check the EEPROM if there is a fault EP will be displayed If EEPROM fault is discovered return fridge This would indicate there is a fault with the Fridge Main Controller Board replace the Fridge Main Controller Board See Appendix K Fridge Controller Board Replacement Procedure for directions iii Last check is for a 3 minute delay BR would be displayed This would indicate there is a fault...

Page 39: ...n reading from the power supply using a clamp meter around the live wire at the plug brown If the compressor is turning on the current drawn will be between 0 3Amps to 1 2Amps i If the Amperage reading is less than 0 5Amps the fridge is low on refrigerant and needs to be replaced In this situation return the unit and request a replacement unit See Figure 85 ii If the Amperage is higher than 1 2Amp...

Page 40: ... Check the power supply harness Check the fridge harness to verify it is connected as seen in Figure 88 Remove two screws from the fridge power plug to check the connections to the plug Refer to Appendix C JoeTap NITCOM Wiring Diagram for full wiring diagram b If Touch Screen is ON and light fan are both off remove two screws from the fridge power plug and pull it out to check the connections to t...

Page 41: ...r 5 seconds and the display and interior light will turn on d If Fan is ON Display is ON and Light is OFF replace the Fridge Light i Turn the unit off by unplugging it from the wall ii Unclip the Light Cover using a flat head screwdriver See Figure 90 iii Disconnect the light from the light harness See Figure 91 Figure 89 Main Power Plug Figure 90 Light Cover removed ...

Page 42: ... with the threaded hole in the hinge b Insert the Hinge pin through the threaded hole into the hinge bushing c Apply thread lock on the threaded portion of the hinge pin d Screw the hinge pin into the threaded hole of the hinge Tighten the Hinge Pin so it is flush with the hinge Over tightening the hinge pin can cause the hinge pin to go through the screw hole and get dislodged again See Figure 92...

Page 43: ...If UI Harness is in good condition plug it into the new LED UI Display Board and verify if the UI Harness is undamaged by plugging unit back in If UI Board lights up then the UI Harness is not damaged Unplug the Unit and continue installing the new LED UI Display Board i Place LED UI Display Board into the new Black Plastic Bracket j Peel off the White Sticker on the new Black Plastic Bracket and ...

Page 44: ...Nitro Fridge by unplugging it from the power supply b Remove the UI Board i Open the JoeTap Compact Nitro Fridge Door and use Utility Knife or similar to get under the existing UI Overlay and peel it off See Figure 98 ii Remove two 2 screws holding the UI Board in place See Figure 99 Align 7 Segment LED Light on Right Side Figure 96b Replace Screws Figure 97 Overlay Replaced Figure 98 Removing UI ...

Page 45: ...sible and discard it See Figure 101 d Drill the UI Harness Access Hole i Mark 7 5inches from one edge of the Fridge on the bottom surface of the Overhang below the plunger the switch See Figure 102a ii Mark 1 inch from the front face of the Overhang and mark the drill location See Figure 102b Disconnect UI Harness Cut Off damaged UI Harness Figure 99 UI Board retaining screws removed Figure 100 UI...

Page 46: ...rdboard plastic and or tap used to cover the event holes on the Front Grill e Insert the replacement UI Harness through the Access Hole i Insert the supplied Grommet for 5 8 inch hole over the connector on the UI Harness that is labeled Display Board See Figure 104a ii Apply Tape over the Connector on the UI Harness end so it is covered and prevents debris foam entering the sockets See Figure 104b...

Page 47: ...r the Connector on the UI Harness and connect it to the UI Board See Figure 106 ii Pull the UI Harness into the UI Board Housing so that there is sufficient length in the housing See Figure 107 Grommet Tape 5 8 Access Hole Grommet Installed Harness Connected Figure 104a UI Harness inserted into the Grommet Figure 104b UI Harness connector covered with tape Figure 105a UI Harness pushed through acc...

Page 48: ...d and Black Plastic Bracket into the UI Board Cavity and secure it in place with the two screws See Figure 109b vii Peel the sticker off the New Overlay and install the New Overlay Do not reuse the Old Overlay Make sure to align the 7 segment LED The light symbol should be on the right side See Figure 97 UI Harness Routed RTV to seal Access Hole Screws Figure 107 UI Harness routing shown Figure 10...

Page 49: ...igure 112 iii Insert the open end of the UI Harness labeled Control Board through the topmost middle vent hole on the Front Grill See Figure 113a iv Route the Connecter end of the UI Harness labeled Control Board through the Fridge by inserting it through the cavity on the right side of the Fridge See Figure 113b Screws Screws Figure 111 Front Grill installed with screws Figure 112 Rear Grill scre...

Page 50: ...front of the NITCOM Fridge See Figure 115 h Install the P Clamp on the UI Harness i Place the P Clamp provided around the UI Harness between the Grommet and the Front Grill See Figure 116 Route through Topmost Middle Vent Right Side Cavity Wire not hanging Figure 113a UI Harness routed through Front Grill Figure 113b UI Harness routed through Right Side Cavity Figure 114 UI Harness routed through ...

Page 51: ...he P Clamp with the pilot hole and secure the P Clamp with the 10 Sheet Metal Screw provided with a 5 16 Hex Drive Screwdriver See Figure 117b i Connect the UI Harness to the Control Board Harness i Locate the existing UI Harness at the NITCOM Fridge Rear It can be found in the bundle of wires next to the inverter on the Left of the Fridge as seen from the rear of the Fridge See Figure 118 Fridge ...

Page 52: ...he Front Grill and Rear Grill i Plug the NITCOM Fridge and verify that the UI Harness Replacement was done correctly The Blue LED on the Fridge Temperature Control should light up if it was done correctly See Figure 121 ii Once the repair is verified turn the NITCOM Fridge off iii Find the existing UI Harness the harness that is no longer used and follow it up to where it is hidden behind the Rear...

Page 53: ... supplied See Figure 123 v Place the bundle of wires back into the Fridge Cavity from where it was removed earlier See Figure 124 vi Replace the Rear Bottom Grill Cut off old UI Harness Form new cable bundle Tuck Bundle away Figure 122 UI Harness connected to J3 Connector Figure 123 Wire Bundle formed Figure 124 Wire Bundle formed ...

Page 54: ...en 1 8 inch to inch away from the tip of the tube as seen in Figure A1 and the clamp ears are closed as seen in Figure A2 Appendix B John Guest Torque Settings Figure A1 Hose Clamp placement location shown Place Hose Clamp 1 8 1 4 from tube end Ears closed Figure A2 Hose Clamp showing ears closed ...

Page 55: ...Page 55 Appendix C JoeTap NITCOM 110V Wiring Diagram ...

Page 56: ...Page 56 Appendix D John Guest Speed Fit Guide ...

Page 57: ...ATE DISPLAY See Figure E6 6 Allow the system to reboot The screen will return to the Home Screen once the system has fully rebooted 7 Select SETTINGS See Figure E3 8 Enter passcode 2186 See Figure E4 9 Select SOFTWARE UPDATES See Figure E7 10 Select UPDATE CONTROLLER See Figure E8 Figure E6 Software Update Screen with Update Display Circled Figure E3 Home Screen with Settings Circled Figure E5 Set...

Page 58: ...e Screen 15 Select PRODUCTION TOOLS See Figure E10 16 Enter passcode 2186 17 Select LOAD DEFAULTS See Figure E11 Figure E8 Software Update Screen with Update Controller Circled Figure E7 Settings Screen with Software Update Circled Back Figure E9 Settings Screen with Software Update Circled Figure E10 Settings Screen with Production Tools Circled Figure E11 Production Tools Screen with Load Defaul...

Page 59: ...ur records See Figure E14 25 Select BACK until home screen is reached Appendix F Flowmeter Solenoid Module Replacement 1 Remove the two screws 8 32 holding the flowmeter solenoid bracket in place See Figure F1 Figure E12 Home Screen with Settings Circled Figure E14 Pin Code Screen with Enter Circled Figure E13 Settings Screen with Software Updates Circled Display Software Version Controller Softwa...

Page 60: ...he bracket by removing the two screws and split washer holding it in place with a T20 Drive Screwdriver See Figure F3 5 Replace the Solenoid Flowmeter Module with a new part and reinstall in the opposite order Remember to reinstall the split washer removed when reinstalling the new Solenoid Flowmeter Module to prevent it from getting damaged 6 Replace the rest of the fittings tubing in the reverse...

Page 61: ...he 3 8 tube from it See Figure G2 3 Remove the Solenoid Flowmeter Module Bracket and Solenoid from the Rear Enclosure 4 Remove the Solenoid Flowmeter Module from the bracket by removing the two screws and split washer holding it in place with a T20 Drive Screwdriver See Figure G3 Figure G2 Connection Shown Disconnect Here Disconnect Here 8 32 Screws and 8 Washers Solenoid and Flowmeter Bracket Fig...

Page 62: ...asher removed when reinstalling the new Solenoid to prevent it from getting damaged The Solenoid should be installed so that the U Bracket on the Solenoid is on the Right with the bracket flange facing towards you See Figure G5 Remove with T 20 Screw Driver Remove with T 20 Screw Driver Solenoid U Bracket on RIGHT SIDE Bracket Flange facing towards you Figure G3 Screws Shown Figure G4 Screws Shown...

Page 63: ...g away from you See Figure G6 8 Replace the rest of the fittings tubing in the reverse order of that it was removed in Appendix H Disassembling the Tower 1 Identify the Leak If it is from the connections made from the Insulated Bundle the tower does not need to be disassembled Simply push the connections in further to engage the O Ring inside the John Guest Fittings to seal See Figure H1 Solenoid ...

Page 64: ...ounter Bracket with Cord Grips 2 2 1 Identify the two screws bolts holding the Bracket in place See Figure H3 2 2 2 Use a 3 8 Hex socket driver and a Philips head screwdriver to remove the screws 2 3 Remove the tower completely by remove the remaining two screws from the tower 3 Disassembling the Tower 3 1 Remove the Faucet using the Faucet Insert the pin on the Faucet Wrench in the opening on the...

Page 65: ...w Shanks 3 3 1 Pull back the Curved Spacer Elbow Shank Nut and the Elbow Shank Nut to expose the Snap Ring See Figure H7 and Figure H8 1 inch Flare Wrench Figure H5 Flare wrench used to remove Elbow Shank Lock Nut Figure H4 Remove Faucet with a Faucet Wrench Faucet Wrench Figure H6 Both Elbow Shank Lock Nuts removed ...

Page 66: ...ved At this point the entire Tower Tubing Assembly should now be removeable See Figure H10 3 3 4 Remove the Tower Tubing Assembly for inspection Identify leaks and replace parts as needed See Figure H11 Figure H7 Elbow Shank components pulled back to expose Snap Ring Figure H9 Snap Ring removed from Elbow Shank Curved Spacer Elbow Shank Nut Elbow Shank Collar Snap Ring removed Snap Ring Tower Body...

Page 67: ...urved surface on the Lock Nut and the Black Plastic Washer are facing the same way If locknut is flat curved on both sides this orientation will not matter See Figure G13 4 1 3 Insert a set of Lock Nut and Black Plastic Washer over the tubes on it Ensure that the curved side on both the Black Plastic Washer and the Lock Nut are facing towards the tip of the tubes Ensure that the Lock Nut goes in f...

Page 68: ...e Clamps The Hose Clamps must face in opposite directions and be parallel to the Elbow Shank See Figure H17 Figure H14 Lock Nut and Black Plastic Washer inserted over both tubing Figure H15 Hose Clamps over the both tubing Figure H16 Elbow Shank inserted into the tubing Curved Side of Black Plastic Washer facing open end of tubes Curved Side of Lock Nut facing open end of tubes Elbow Shank inserte...

Page 69: ...e 2 Way Divider going in first See Figure H19 4 2 3 Insert the Elbow Shank with the Venturi attached into the RIGHT tower hole when it is placed upright and the holes are facing towards you See Figure H20 4 2 4 Insert the Elbow Shank with the 10 5 inch Barrier Tubing inserted in the LEFT hole when it is placed upright and the holes are facing towards you See Figure H21 Figure H17 Hose Clamps on th...

Page 70: ...llar is facing towards the tower body See Figure H25 4 3 5 Insert the Snap Ring over the Elbow Shank into the second groove Be careful not to stretch the snap ring during this procedure See Figure H26 4 3 6 Pull the Elbow Shank Collar over the Snap Ring Be careful not to stretch the snap ring during this procedure See Figure H27 Figure H20 Elbow Shank with the Venturi attached Inserted into the Ri...

Page 71: ... and hand tighten the Lock Nut onto the Elbow Shank See Figure H29 4 4 2 Push the Threaded end of the Elbow Shank with the 10 5 inch tubing attached to it into the Left Hole in the Tower See Figure H30 Figure H25 Elbow Shank Collar inserted over Elbow Shank Figure H26 Snap Ring in Second Groove Figure H27 Elbow Shank Collar over the Snap Ring Figure H28 Both Elbow Shanks fully assembled Thick End ...

Page 72: ...d end of the faucet onto the right elbow shank and rotate the nut on the shank to hand tighten it Cut the Bolts to length if necessary See Figure H33 4 6 Use the wrench to tighten the faucet securely Ensure that the nozzle opening is facing downwards Repeat for the faucet on the left See Figure H34 Figure H29 Elbow Shank secured in place with Lock Nut Figure H30 Threaded end of the Elbow Shank ins...

Page 73: ...ined up you may have to adjust it to make installation easier and effective See Figure H36 5 3 Insert the gray stem attached to the braided tube into the 2 Way Divider and the White LLDPE Tube into the Check Valve Seat the tubing fully into the quick connect Support the tubing with one hand and firmly Figure H35 Screw location shown Figure H33 Connection Shown Install two screws opposite of each o...

Page 74: ... See Figure H38 5 5 Align the Under Counter Bracket with the remaining two holes and secure it with the Nut and Washer Removed earlier Cut the Bolts to length if necessary See Figure H40 5 6 Tighten the Cord Grips to strain relief the tubes See Figure H40 5 7 Insulate the product tubing Figure H37 Tube length shown Figure H38 Connection Shown Figure H39 Locking Clip shown Figure H40 Under Counter ...

Page 75: ... Turn off the Nitrogen Supply and open the faucet handle to release pressure 4 Remove the Rear Enclosure Cover 5 Identify the Pressure Transducer that is suspected to be broken malfunctioning Remove the locking clip holding it in place and disconnect Pressure Transducer at with the Black Push to connect fitting that is inserted into the Tee Push to fit fittings Cut cable tie holding the Pressure T...

Page 76: ...is method if multiple Pressure Transducers are suspected of damage malfunction and the Nitrogen Supply has a Pressure Gauge that can be easily accessed and read 2 Locate the Nitrogen Supply Change the Nitrogen Supply output in the 20psi 25psi range and note the pressure reading If the Pressure Regulator at the Nitrogen Supply is not self relieving then you will have to depressurize the system to c...

Page 77: ...his method if Methods 1 and 2 cannot be followed and you have access to a Pressure Transducer Test Rig as seen in Figure I9 2 Depressurize the unit Turn off the Nitrogen Supply and open the faucet handle to release pressure 3 Remove the Rear Enclosure Cover 4 Remove the locking clip holding it in place and disconnect Pressure Transducer at with the Black Push to connect fitting that is inserted in...

Page 78: ...me screen to see the pressure reading on the Touch Screen See Figure I10 and Figure I11 8 Compare the pressure reading of the known pressure to the pressure reading on the touch screen If the difference is negligible the pressure transducer is functional See Figure I8 for location of each reading 9 If the difference is substantial more than 2psi replace the pressure transducer 10 Secure the Pressu...

Page 79: ...Page 79 Appendix J Fridge Functionality Maintenance and Troubleshooting Guide ...

Page 80: ...Page 80 ...

Page 81: ...Page 81 Refrigeration System Wiring Diagram ...

Page 82: ... It will be adhered to the floor of the undercabinet space so may require use of Flat Head Screwdriver to leverage it to detach See Figure K2 3 Unscrew the fasteners connecting the two halves of the Controller Board Enclosure These screws will be found on the underside of the Control Board Enclosure See Figure K3 Screws Figure K1 Front Grill installed with screws Figure K2 Controller Board Enclosu...

Page 83: ...m piece of the Controller Board Enclosure See Figure K4 7 Insert the grommets on the harness into the appropriate slots in the bottom piece of the Controller Board Enclosure See Figure K5 8 Install the top piece of the Controller Board to align the two halves See Figure K6 Ensure the grommets on the harness does not pop out so it is properly sealed Screws Figure K3 Control Board Enclosure screws s...

Page 84: ...d tape to the floor under the cabinet See Figure K9 Reinstall the Front Grill with the two screws removed earlier Figure K5 Rubber Grommets in proper slots Harness Rubber Grommets Figure K6 Two halves of Control Board Enclosure aligned Figure K7 Controller Board Enclosure screwed together Figure K8 Controller Board Enclosure with fresh double sided tape Figure K9 Controller Board Enclosure placed ...

Page 85: ...ottom Grill by unscrewing the five 5 screws holding it in place You will need to open the USB Cap to remove the Rear Bottom Grill See Figure L3 4 Remove the Locking clip in the Push to connect straight fitting threaded into the back of the Left Regulator Figure L3 USB Cap shown unscrewed Unscrew USB Cap Remove Screws Figure L2 Rear Enclosure Cover secured in place using Sheet Metal Screw on either...

Page 86: ...itting at the connection with the Tubing coming out of the Fridge See Figure L5 7 Remove all the screws holding the Rear Enclosure There should be four 4 inside the Rear Enclosure and two 2 outside See Figure L6 and Figure L7 Remove Locking Clips Figure L4 Controller Board Enclosure placed back in its original location Figure L5 Controller Board Enclosure placed back in its original location Remov...

Page 87: ...s disconnected the Rear Enclosure will pull right off See Figure L8 and Figure L9 9 Place the Rear Enclosure next to the Fridge careful not to place any wires under strain or on any sharp edges that may damage the wires See Figure L10 Figure L10 Rear Enclosure placed next to Fridge Figure L7 Inside Screws on the Rear Enclosure Remove Four screws Pull on Collet to disconnect Use Wrench to pull coll...

Page 88: ...cate the connection and disconnect it so the Thermistor can be removed See Figure L11 12 Remove the Black Plastic Thermistor Cover on the inner Right Wall See Figure L12 a Utilizing a small flat screwdriver or knife pry the plastic set pin away from the refrigerator wall See Figure L13 b Then use your fingers to completely remove the pin and pin sleeve See Figure L14 13 Remove the Thermistor from ...

Page 89: ...nd Figure L17 16 Insert the thermistor Bulb so it fits into the cover See Figure L18 17 Insert the back end of the Thermistor Cover into the semi circle cutout in the Evaporator Cover and push the sleeve in the hole in the Right Wall See Figure L18 18 Insert the pin in the sleeve to secure it in place See Figure L19 Thermistor Figure L15 Thermistor inside the Thermistor Cover Figure L16 Thermistor...

Page 90: ...sses together at the beginning of the foam cutout See Figure L21 22 Roll the replacement UI Harness in a bundle with all the other loose wires and secure it in a bundle with the Cable Tie supplied See Figure L22 Harness secured to Insulated Copper Tubing Figure L21 Cable Tie 6 used to secure both the harnesses to the Insulated Copper Tubing Secure the Harness together at the foam cutout Figure L18...

Page 91: ...lled in the rear bulkhead as per WI 1514 001 See Figure L24 c Push the Rear Enclosure so the two hoses push through the Gray Sealing Grommets and inside the Rear Enclosure See Figure L25 d Align the Blue Barrier Hose on the LEFT with the John Guest Fitting attached to the Pressure Regulator on the LEFT and push the Left Pressure Regulator firmly to install the Barrier Tube fully See Figure L25 Rou...

Page 92: ...UR SLOTS INSIDE THE REAR ENCLOSURE See Figure 13 and Figure 14 Ensure that Blue Barrier Hose is not bent during the process If the Blue Barrier Hose is bent during the Rear Enclosure Installation process remove the Rear Enclosure and the Blue Barrier Hose Discard the Blue Barrier Hose and replace the Barrier Hose with a new unused hose See Figure L27 and Figure L28 Left Pressure Regulator Blue Bar...

Page 93: ...e the Rear Bottom Panel under the Lower Lip of the NITCOM Refrigerator so that the Square Cutout aligns over the Black Power Plug See Figure L30 Figure L27 Secure Rear Enclosure to Fridge with Top Left Screw outside Figure L28 Secure Rear Enclosure to Fridge with all four Screws inside Wires routed through Foam Cutout in the Fridge Rear Figure L29 Wires routed through Foam Cutout in the Fridge Rea...

Page 94: ...Hex Drive to fully insert the Self Tapping 10 16 Screws See Figure L31 29 Reinstall the Rear Enclosure Cover See Figure L32 Rear Bottom Panel Lower Lip of Fridge Figure L30 Bottom Back Panel under the Lower Lip of the Fridge Self Tapping 10 16 screws Figure L31 Rear Bottom Panel installed Figure L32 Rear Enclosure Cover installed ...

Page 95: ...e on top of the Rear Enclosure See Figure L36 and Figure L37 Figure L34 Regulator Cover Tab lined up with Slot on Top Wall of Rear Enclosure Figure L35 Regulator Cover Tab sliding into Slot on Top Wall of Rear Enclosure Regulator Cover Tab Rear Enclosure Slot Figure L36 Hole on Left tab of the Regulator Cover Lined up with punch on the Top Wall of Rear Enclosure Holes aligned Figure L37 Regulator ...

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