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Bunn Nitron Cold Draft, Руководство по обслуживанию и ремонту, Страница: 14 / 51

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14

TROUBLESHOOTING (cont.)

PROBLEM

PROBABLE CAUSE

REMEDY

Nothing Flowing from Nozzles

Product Pouring Too Warm and/or 

Inside Cabinet Too Warm

1.  Dispense switch is OFF.

2. Gas, coffee, and water not 

connected.

1.  System has not reached tem-

perature (ice bank not fully 

formed).

2.  BIB or caddy is ambient temp 

and needs to cool down.

3.  Water bath pump not running.

1.  Turn Dispense switch ON.

2. Assure all required connec-

tions are made according to 

set-up instructions before op-

erating the system.

1. Wait until system is fully 

cooled and ice bank fully 

formed. Check Compressor 

switch is set to ON and sight 

gauge shows full water bath. If 

water bath sight gauge is low, 

press Dispense switch to OFF. 

Wait a few seconds. Press Dis-

pense switch to ON. Bath will 

automatically start filling water 

bath after 30 seconds.

2.  Best practice is to use a chilled 

BIB or caddy for proper ni-

trogenation. If using ambient 

concentrates, chill BIB or cad-

dy first prior to using.

3.  Confirm the compressor/water 

bath pump switched is turned 

ON. Confirm the water bath 

pump and compressor are 

running.

55124  021418

Содержание Nitron Cold Draft

Страница 1: ...revision of the Operating Manual or to view the Illustrated Parts Catalog Programming Manual or Service Manual please visit the Bunn O Matic website at www bunn com This is absolutely FREE and the qui...

Страница 2: ...ments by such individuals whether oral or written do not constitute warranties and should not be relied upon If BUNN determines in its sole discretion that the equipment does not conform to the warran...

Страница 3: ...required between the dispenser sides and the wall or another appliances For optimum performance do not allow warm air from surrounding machines blow on the JDF dispenser Leave some space so the dispe...

Страница 4: ...finished productflowsfromthe dispense nozzles 13 Remove Air Filter from outside rear panel of dispenser 14 Wash Filter using warm soapy water rinse using water flow from faucet Shake out excess water...

Страница 5: ...or damage and replace immediately Check and or replace every 6 months or as required 39690 0000 Pump Tube Replacement Kit Includes items indented below 28755 1011 Tube Norprene 25 ID x 17 0 lg 32732...

Страница 6: ...avoid twists and kinks in the tubing Make certain that all plumbing connections are sealed and electrical connections tight and isolated WARNING Exercise extreme caution when servicing electrical equi...

Страница 7: ...irty con denser filter or adequate ventilation and space around machine Checkrefrigerationsystemforleaks and proper charge Check Dispense switch is set to ON and sight gauge shows full water bath If s...

Страница 8: ...alve failed A Set switch to ON position B Check switch and harness for proper continuity Check all previous items that pre tain to refrigeration or cold water recirculation Place switch in ON position...

Страница 9: ...oper counterclockwise rotation of pump rollers If coun terclockwise replace pump tubing If clockwise wire connection to pump is reversed Switch wires on terminals A Check speed setting on circuit boar...

Страница 10: ...n normal May fill drip tray during initial ice block formation Inspect or replace fittings clamps o rings solenoidsandquickdiscon nect fittings NOTE Dispensedeckareaslopesto draintubethatleadstothedri...

Страница 11: ...ore use 35 40 Maintain 30 psi or higher and a minimum dynamic flow rate of 4 5 fl oz sec Over 100 psi install a pressure regulator and set to 50 psi A Perform3secondwaterdispense test Factory setting...

Страница 12: ...eat it back down prop erly Follow step by step in structions on priming product through the system 1 Waituntilsystemisfullycooled and ice bank fully formed before setting preferred N2 pressure Check C...

Страница 13: ...properly and if there s a shut off valve make sure shut off valve is open Check that water inlet pres sure has dynamic operating pressure between 30 to 90 psi If below 30 psi install water booster pu...

Страница 14: ...up instructions before op erating the system 1 Wait until system is fully cooled and ice bank fully formed Check Compressor switch is set to ON and sight gauge shows full water bath If water bath sig...

Страница 15: ...mea suring cylinder under the dis pense nozzle pull and release the tapper handle 3 times The dispenser will then dispense an amount of water for 3 sec onds If water flow rate is set too low adjust t...

Страница 16: ...Fluctuations in water or gas supply pressures d Ambient temperature too high or low 2 System has internal malfunc tion and needs service by a technician 1 a Install a water line that is in accordance...

Страница 17: ...oor panels dispenser top covers hopper s hopper support plate splash guard splash panel w drip tray lower front access panel and rear ac cess cover Refer to the contents listing for component location...

Страница 18: ...ation Before removing panels make sure power is OFF to the machine and water is disconnected accept where indicated in testing procedures Retain all screws and other attaching hardware for re assembly...

Страница 19: ...down 2 Lift and remove product shelf to access dispense platform 3 Remove front thumb screw holding dispense platform 4 Disconnect 12 pin connector above dispense platform in rear 5 Disconnect 3 8 wat...

Страница 20: ...voltage is present as described replace the fan Ifvoltageisnotpresentasdescribed refertotheWiring Diagrams and check the dispenser wiring harness back to the transformer See TRANSFORMER Removal and Re...

Страница 21: ...TERMINALS FIG 8 THERMAL OVERLOAD PROTECTOR TERMINALS Plugs into Relay Compressor Start Relay Refer to FIG 7 1 Disconnect the dispenser from the power source 2 Remove compressor terminal cover 1 3 Inst...

Страница 22: ...replacing the compressor it is recom mended that the dryer also be replaced 1 Disconnect the tubes from the condenser and the accumulator 2 Disconnect the compressor wiring harness from the dispenser...

Страница 23: ...ty is present as described reconnect the wires to the switch terminals If continuity is not present as described replace the switch Removal and Replacement 1 Disconnect the dispenser from the power so...

Страница 24: ...bed replace the fan Removal and Replacement 1 Disconnect the dispenser from the power source 2 Remove the four screws attaching the fan and wire guard to the mounting bracket 3 Disconnect the 2 pin co...

Страница 25: ...arness Connectthedispensertothepower source The indication must be 24 volts ac 6 Disconnect the dispenser from the power source Ifvoltageisnotpresentasdescribed refertotheWiring Diagrams and check the...

Страница 26: ...t 1 Remove the five screws securing the door cover to the door frame 2 Carefully pull the cover forward and disconnect all switch harnesses from the connectors on the control board 3 Removethefour 6 2...

Страница 27: ...p Meter should display around 36 amps 4 Visually ensure the pump is moving or circulating water Removal and Replacement 1 Remove dispense platform for ease of taking out recirculating pump 2 Remove le...

Страница 28: ...heck for continuity between the terminals shown in Fig 21 Continuity must be present when the switch is in the ON position If continuity is not present replace the switch Removal and Replacement 1 Dis...

Страница 29: ...rotor 3 Inspect the pump tubing for signs of wear and replace every six months or as needed 4 Inspectthepumprotorforsignsofwearandreplace if necessary 5 Install the new pump tube around the rotor and...

Страница 30: ...t upon the dispense station pot dial setting 3 Disconnect the dispenser from the power source If voltage is present as described replace the motor Ifvoltageisnotpresentasdescribed refertotheWiring Dia...

Страница 31: ...t 77 F temperature If readings are not as described replace the valve Removal and Replacement 1 Disconnect the two wires from the dispense valve 2 Remove the 6 32 screw and plate securing the water ma...

Страница 32: ...ection If continuity is not present with the test magnet replace the reed switch If continuity is continuous without the test magnet replace the reed switch If continuity is present with the test magn...

Страница 33: ...to Fig 32 and reconnect wires to the LED regulator board 7 Replace the door cover and secure with the five 6 32 screws 8 Return power to the dispenser FIG 32 LED DOOR LIGHT WIRING FIG 31 LED DOOR LIGH...

Страница 34: ...D lamp 5 Install a new LED lamp 6 Reconnect wires to the LED harness 7 Replace the door cover and secure with the five 6 32 screws 8 Return power to the dispenser FIG 34 LED DOOR LIGHT WIRING FIG 33 L...

Страница 35: ...chassis on the upper outside of the component bracket Test Procedures 1 Disconnect the dispenser from the power source 2 Disconnect the blue black wire and the red black wires from relay terminals 3 C...

Страница 36: ...ts 4 Refer to Fig 38 to reconnect the wires Location The relay or contactor is located inside the dis penser chassis on the lower outside of the component bracket Test Procedures Continuity or Voltage...

Страница 37: ...tinuity is present as described reconnect the wires to the switch terminals If continuity is not present as described replace the switch Removal and Replacement 1 Disconnect the dispenser from the pow...

Страница 38: ...ce If the sound is heard as described and water will not pass through the solenoid valve there may be a block age in the water line before the solenoid valve or the solenoid valve may require inspecti...

Страница 39: ...scribed reconnect the two wires to the solenoid If continuity is not present as described replace the solenoid valve Removal and Replacement 1 Disconnect the dispenser from the power source 2 Turn off...

Страница 40: ...hen the On Off dispense switch is in the On position Test Procedures Float down position 0 00vdc or continuity across float contacts Float up position 5 0vdc or no continuity across float contacts Rem...

Страница 41: ...erature probe while in the cup of ice water 32 F The resis tance should be within 31280 00 to 34022 00 Ohms 32 F If resistance is not to specification replace the tem perature probe Removal and Replac...

Страница 42: ...ve the left side housing panel 2 Disconnect the plug on the temperature sensor leads from the connector on the dispenser main harness 3 Open the cabinet door and remove the product containers 4 Remove...

Страница 43: ...om Power Cord FIG 52 TRANSFORMER TERMINALS P1647 FIG 51 TRANSFORMER Location The transformer is located on the electrical com ponent mounting bracket on the lower front of the dispenser behind the spl...

Страница 44: ...ter water pump Removal and Replacement 1 Disconnect dispenser from the power source 2 Shut off nitrogen gas at supply tank 3 Remove the right side housing panel 4 Disconnect the plug on the booster pu...

Страница 45: ...Unlock the adjustment knob and rotate knob while watching the pressure gauge for increase or decrease in water pressure If the water pressure or water flow doesn t change replace the regulator Remova...

Страница 46: ...water to flow in reverse direction Removal and Replacement 1 Disconnect dispenser from the power source 2 Shut off water supply to the dispenser 3 Shut off nitrogen supply to the dispenser 4 Remove th...

Страница 47: ...erminals when no N2 gas pressure is applied No continuity replace pressure switch Removal and Replacement 1 Disconnect dispenser from the power source 2 Shut off nitrogen supply to the dispenser 3 Rem...

Страница 48: ...onnect fitting Connect the test gauge and turn N2 supply back on The pressure reading should be at 90psig Removal and Replacement 1 Disconnect dispenser from the power source 2 Shut off water supply t...

Страница 49: ...the nozzle and gently remove insert Inspect the inner diameter of all five holes for product residue Clean and clear the residue from the holes Ensure all holes appear the same diameter size before in...

Страница 50: ...0 Triac Map 1 2 3 4 5 6 7 8 9 10 11 1 Compressor Relay Q25 2 Not Used 3 Not Used 4 Not Used 5 Not Used 6 Not Used 7 Not Used 8 Not Used 9 Not Used Q11 10 Inlet Water Valve Q10 11 Not Used 55124 021418...

Страница 51: ...T VALVE WATER BOOSTER PUMP WATER BOOSTER PUMP RELAY BRN WHI SOL BLK TRANSFORMER WHI BLU WHI BLU L O A D L I N E WHI WHI BLK K1 120V MODELS N A B A B A B L1 WHI GRN BRN WHI A B 220 230V MODELS GRN YEL...

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