Manuals / Cornelius / Kitchen Appliance / Refrigerator

Cornelius R-134A service manual Troubleshooting Post-Mix System System

Models: R-134A

1 54

Download 54 pages 24.45 Kb

Page 47

TROUBLESHOOTING

TROUBLESHOOTING

IMPORTANT: Only qualified personnel should service internal components or electrical wiring.

WARNING: If repairs are to be made to a product system, remove quick disconnects from the applicable product tank, then relieve the system pressure before proceeding. If repairs are to be made to the CO2 system, stop dispensing, shut off the CO2 supply, then relieve the

system pressure before proceeding. If repairs are to be made to the refrigeration system, make sure electrical power is disconnected from the unit.

TROUBLESHOOTING POST-MIX SYSTEM SYSTEM

Trouble	Probable Cause	Remedy
WATER-TO-SYRUP “RATIO”	A. Dispensing valve syrup flow	A. Adjust Water-to-Syrup “Ratio” as
TOO LOW OR TOO HIGH	control not properly adjusted.	instructed.

B.Syrup Tanks System. B. Adjust CO2 regulator for syrup

CO2 gas pressure to syrup	tanks as instructed.
tanks insufficient to push syrup
out of tanks.

Bag-in-Box Syrup System.

CO2 gas pressure to syrup pumps insufficient to operate pumps.

Adjust CO2 regulator for syrup pumps as instructed.

ADJUSTMENT OF DISPENSING VALVE SYRUP FLOW CONTROL DOES NOT INCREASE TO DESIRED WATER-TO-SYRUP “RATIO”.

A.No syrup supply.

B.Syrup Tanks System.

Syrup tanks CO2 regulator out of adjustment.

Syrup Bag-in-Box System.

Syrup pumps CO2 regulator out of adjustment.

C.Dispensing valve syrup flow control syrup or syrup line restricted.

D.Improper syrup Baume.

E.Inoperative dispensing valve syrup flow control.

F.Tapered gasket inside tube swivel nut connection distorted from being overtightened restricting syrup flow.

A.Replenish syrup supply as instructed.

B.Adjust CO2 regulator for syrup tanks as instructed.

Adjust syrup pumps CO2 regulator as instructed.

C.Sanitize syrup system as instructed.

D.Replace syrup supply as instructed.

E.Repair dispensing valve syrup flow control.

F.Replace tapered gasket. Make sure it is properly seated.

312027000

42

Image 47

Cornelius R-134A service manual Troubleshooting Post-Mix System System

Contents

Ó IMI CORNELIUS INC TABLE OF CONTENTS Page TABLE OF CONTENTS cont’dSERVICE AND MAINTENANCE TROUBLESHOOTINGTROUBLESHOOTING REFRIGERATION SYSTEM TABLE OF CONTENTS cont’dFollow Safety Instructions SAFETY INFORMATIONRecognize Safety Information Understand Signal WordsPage 312027000 THIS PAGE LEFT BLANK INTENTIONALLYUNIT DESCRIPTION GENERAL INFORMATIONGENERAL DESCRIPTION WARRANTY REFERENCE INFORMATION THEORY OF OPERATION CARB WATER SYRUP SYRUP SYRUP SYRUP SYRUP CARBONATED WATER TANK CO2 INLETCARBONATOR PLAIN WATER INLET DOUBLE LIQUID CHECK VALVE WATER PUMP CO2 CHECK VALVECARB WATER SYRUP SYRUP SYRUP SYRUP SYRUP SYRUP PLAIN WATER NO. 3 VALVECAP NUT CO2 CHECK312027000 THIS PAGE LEFT BLANK INTENTIONALLYIDENTIFICATION OF LOOSE-SHIPPED PARTS INSTALLATIONUNPACKING AND INSPECTION SELECTING LOCATION INSTALLING WATER ONLY LEVER KIT P/N 3297 ON UF-1 DISPENSING VALVEINSTALLING UNIT CONNECTING PLAIN WATER SOURCE LINES TO UNIT312027000 FIGURE 4. SYRUP INLET SUPPLY LINE CONNECTIONS SIX-FLAVOR UNIT SHOWNDISPENSING VALVE RELEASE LATCH DISPENSING VALVE BLOCK SYRUP INLET TUBESCONNECTING SYRUP SOURCE LINES TO UNIT FILL WATER TANK AND START REFRIGERATION SYSTEM CONNECTING CO2 SOURCE LINE TO UNITPREPARING UNIT FOR OPERATION SEALING UNIT BASE TO COUNTERTOPUNIT OPERATION ADJUST WATER-TO-SYRUP “RATIO” BRIX OF DISPENSED PRODUCT 312027000 THIS PAGE LEFT BLANK INTENTIONALLYOPERATOR’S INSTRUCTIONS DISPENSING VALVES KEYED LOCK-OUT SWITCHUNIT POWER SWITCH 115 VAC, 60 HZ UNITS ONLY CARBONATOR WATER PUMP MOTOR POWER SWITCHADJUSTING DISPENSING VALVE WATER FLOW RATE ADJUSTMENTSCLEANING AND SANITIZING ADJUSTING CO2 REGULATORSSANITIZING SYRUP SYSTEMS CLEANING CO2 GAS CHECK VALVESCHECKING ICE WATER BATH 312027000 THIS PAGE LEFT BLANK INTENTIONALLYHOOD AND FRONT PANEL REMOVAL SERVICE AND MAINTENANCEFRONT ACCESS PANEL REMOVAL PREPARING UNIT FOR SHIPPING, STORING, OR RELOCATINGAGITATOR MOTOR POWER CORDKEYED-LOCK SWITCH MAIN POWER SWITCH 115VAC UNIT ONLYFIGURE 6. SF-1 DISPENSING VALVE ADJUSTING DISPENSING VALVES WATER FLOW RATEFIGURE 7. UF-1 DISPENSING VALVE ADJUSTING WATER-TO-SYRUP “RATIO” BRIX OF DISPENSED PRODUCT CHECKING ICE WATER BATH CLEANING DROP-IN REFRIGERATION ASSEMBLY CONDENSER COILCLEANING WATER TANK FIGURE 8. WATER TANK CLEANING AND SANITIZINGDAILY CLEANING OF UNIT SANITIZING POST-MIX SYRUP SYSTEMS Page WARNING To avoid possible personal injury or property damage, do not attempt to remove the syrup tank cover until CO2 pressure has been released from the tank NOTE A screen should always be used, otherwise particles could foul the double-liquid check valve 8. Connect the carbonated water line to the double-liquid check valve REPLENISHING CO2 SUPPLY5470E REPLENISHING SYRUP SUPPLYBAG-IN-BOX SYRUP SYSTEM CLEANING CO2 SYSTEM CO2 GAS CHECK VALVESSYRUP FLAVOR CHANGE SYRUP TANK SYSTEM312027000 FIGURE 12. WIRING SCHEMATIC FOR ELECTRONIC ICE BANK CONTROL OPTIONALTHE GERMAN ICE BANK CONTROL IS FOR INTERNATIONAL USE ONLY 312027000 312027000 312027000 WHITE SOLENOID FRONT TOP VIEW BLACK BLACK SWITCH C N.O N.C RIGHT SIDE VIEWSWITCH ASS’Y P/N LEVER P/N TWO - PIN CONNECTOR312027000 THIS PAGE LEFT BLANK INTENTIONALLYTROUBLESHOOTING POST-MIX SYSTEM SYSTEM TROUBLESHOOTINGNOTE Crushed ice also causes dispensing problems. When dispensed drink hits sharp edges of ice, carbonation is released from drink Page TROUBLESHOOTING REFRIGERATION SYSTEM Page WARRANTY Page IMI CORNELIUS INC CORPORATE HEADQUARTERS One Cornelius Place Anoka, Minnesota