Home

Fountain Troubleshooting Guide

1. WARNING Inspection testing and repair of elec DANGER Use extreme care during electrical cir trical equipment should be performed only by cuit tests Live circuits may be exposed qualified service personnel The unit should be unplugged when servicing except when electri cal tests are required Section 2 Carbonated Water System continued Probable Cause Corrective Action Flat drinks continued Beverages at Dispensing Back Flow Preventer Remove top cover from Remote Refrigeration Tower are below 40 F Unit Use a soap solution around Back Flow Pre 5 C continued venter If bubbles appear at Vent Hole or un derside of Back Flow Preventer clean or re place Back Flow Preventer and corresponding Water Check valve carbonator Tank Double Check valve wa With top cover from Remote Refrigeration Unit ter stuck open removed and carbonator Pump Switch and Wa ter turned off loosen water supply line at inlet side of Double Check valve Assembly If CO2 gas escapes from Check valve it must be cleaned or replaced 8 00218012 Revision C KAK 1 November 2001 Multiplex Company Inc Fountain Troubleshooting Guide Discennect and lec kout all electrical power seurzes before performing service or maintenance on this machine except when electrical testa are being performed by qualified service persennel Troubles hooting Guide WARNING DANGER GF ELECTRICAL SHOCK WARNING Inspecti
2. 21 Multiplex Company Inc Fountain Troubleshooting Guide Troubleshooting Guide WARNING Inspection testing and repair of elec trical equipment should be performed only by qualified service personnel The unit should be unplugged when servicing except when electri cal tests are required WARNING DANGER OF ELECTRICAL SHOCK Disconnect and lock eut all electrical power sources before performing service or maintenance on this machine except when electrical testa are being performed by qualified service personnel DANGER Use extreme care during electrical cir cuit tests Live circuits may be exposed Section 5 Dispensing Valve and Tower continued Probable Cause No water or insufficient water in finished drinks continued Problem occurs at all valves on one 1 dis pensing tower Problem occurs at only one 1 dispensing valve Valve will not shut off 22 No power to transformer or transformer defective Dispensing tower s on and off is Switch defec tive Poor connection on valve Wire Harness Portion Control Timer in operative Selection Switch inopera tive Poor connection at Contact Clips on Selection Panel with Portion Control Timer Moisture on Portion Con trol Timer or Contact Clips Portion Control Timer Ad justment Screw turned beyond control limit Portion Control Timer de fective Selection Panel defective Corre
3. WARNING DANGER OF ELECTRICAL SHOCK WARNING Inspection testing and repair of elec DANGER Use extreme care during electrical cir trical equipment should be performed only by cuit tests Live circuits may be exposed qualified service personnel The unit should be unplugged when servicing except when electri cal tests are required Section 2 Carbonated Water System continued Probable Cause Corrective Action No carbonated water at any of the dispensing valves continued CO2 gas is present at Carbonator Pump worn Dispense Carbonated Water while listening for Dispensing Valves but Brass pump carbonator pump and motor to cycle on at no water Refrigeration Unit Pumps should operate be continued tween 6 to 12 seconds before cycling off If operating time exceeds 30 seconds carbonator Pumps is worn replace Pump Motor defective If Motor will not operate verify voltage across Motor Terminals with voltmeter If voltage reads 110 to 120 VAC the Motor or Pump is defec tive Loosen the Coupling Clamp with a flat blade screwdriver and disengage Pump from Motor If Motor still will not operate with Pump disengaged Motor is defective Replace Carbonator Pump frozen Loosen the Coupling Clamp with a flat blade screwdriver and disengage Pump from Motor By hand turn the Coupling Key in back of Pump If pump shaft will not spin freely Pump is de fective and must be replaced 10 0021
4. replace Switch CO Check valve leaking Use a soap solution around Check valve If bubbles appear tighten Connection to stop leaks Back Flow Preventer stuck Use a soap solution around Back Flow Preven ter Tighten if bubbles appear at connection If bubbles appear at Vent Hole on underside of Back Flow Preventer clean out or replace Back Flow Preventer valve and corresponding Water Check valve Carbonator Tank Relief Use a soap solution around Relief valve If valve leaking bubbles appear replace Relief valve If leak occurs only while Gas leak at the syrup sys Refer to Troubleshooting Section 8 Syrup Sys Change over valve is tem tem under No syrup or insufficient syrup in positioned on CQz refer finished drink to Troubleshooting Section 8 Syrup Sys tem 4 00218012 Revision C KAK 1 November 2001 Multiplex Company Inc Fountain Troubleshooting Guide Discennect and leck out all electrical power sources before performing service or maintenance on this machine except when electrical testa are being performed by qualified service persennel Troubles hooting Guide WARNING DANGER GF ELECTRICAL SHOCK WARNING Inspection testing and repair of elec DANGER Use extreme care during electrical cir trical equipment should be performed only by cuit tests Live circuits may be exposed qualified service personnel The unit should be unplugged when servicing except when electri
5. 00218012 Revision C KAK 1 November 2001 Turn air supply to Shake Machine to off posi tion If Air Compressor cuts out and maintains pressure leak is at Shake Machine or Orange Juice Dispenser Refer to manufacturer s manual for Troubleshooting Use a soap solution around all connections start ing from the Air Motor Pump assembly to the Low and Medium Pressure Syrup Regulators If bubbles appear tighten loose connections care fully Place drain line for bottom of Automatic Drain or Petcock in cup of water If air bubbles ap pear Automatic Drain or Petcock is leaking Clean and or replace as necessary Refer to Troubleshooting Section 8 Syrup Sys tem under No syrup air leak at syrup sys tem Replace Germicidal Filter Note This Filter is not designed to be cleaned but must be replaced when exhausted Verify Automatic Drain is operating If inopera tive or defective replace If unit is not equipped with Automatic Drain use Petcock to remove water from tank If Motor Pump assembly operate without build ing up to 90 psi 6 3 kg cm as needed to cycle off Pump Assembly is defective and must be replaced Observe Air Pressure Gauge to insure proper cycle on at 70 psi 4 9 kg cm and cycle off at 90 psi 6 3 kg cm settings Refer to instruc tions found under Switch cover for adjusting If Switch will not respond to adjustment re place switch While Air Compressor is in the
6. cal tests are required Section 1 CO2 Gas System continued Probable Cause Corrective Action Flat drinks lack of carbonation in carbonated water Primary Regulator less CO2 Supply exhausted CO2 Verify CO2 Tank pressure is a minimum of than 500 psi 34 5 bar Tank is functionally empty 500 psi 34 5 bar on the Primary Pressure Regu if pressure reads less than lator Gauge marked 0 2000 psi Replace tank if 500 psi 34 5 bar necessary Primary Regulator out of Verify CO2 Primary Regulators are set at 90 psi adjustment or inoperative 6 3 kg cm Adjust if necessary If Regulator will not stay in adjustment replace Regulator CO2 Supply adequate A and B CO Tank Change If A and B CO2 Tank Change over Valve is posi greater than 500 psi over Valve incorrectly po tioned on an empty Tank or halfway between A 34 5 bar sitioned and B operating positions CO2 is not supplied to Carbonators Insure valve handler is in the operating position Malfunction of the Refrig Refer to Troubleshooting Section 7 Refrigera eration System tion System under Warm drinks Water Filter restricted Refer to Troubleshooting Section 10 Water Filter System under Peculiar taste Malfunction of the Carbon Refer to Troubleshooting Section 2 Carbon ated Water System ated Water System under Flat drinks Excessive carbonation Primary Regulators set too Verify CO2 Primary Regulators are s
7. on the top of the syrup tank lid If the Gas Quick Disconnect is opening properly pressure should continue to bleed from the Gas Relief valve If not replace Gas Quick Disconnect Syrup Quick Disconnects Open the Dispensing valve Syrup Side only for appropriate flavor Dispensing syrup for at least 10 seconds If CO2 Air pock ets appear in syrup replace Syrup Quick Dis connect If syrup flow is inadequate or fluctu ates during 10 seconds of flow replace Syrup Quick Disconnects 00218012 Revision C KAK 1 November 2001 Multiplex Company Inc Fountain Troubleshooting Guide Discennect and leck out all electrical power sources before performing service or maintenance on this machine except when electrical testa are being performed by qualified service persennel Troubles hooting Guide WARNING DANGER GF ELECTRICAL SHOCK WARNING Inspection testing and repair of elec DANGER Use extreme care during electrical cir trical equipment should be performed only by cuit tests Live circuits may be exposed qualified service personnel The unit should be unplugged when servicing except when electri cal tests are required Section 8 Syrup System continued Probable Cause Corrective Action No syrup of insufficient Gas leak at Syrup System Use a soap solution around all connections Syrup in finished drink starting from the Low and Medium Pressure continued Regulators to the base of the Syrup Tank P
8. testing and repair of elec DANGER Use extreme care during electrical cir trical equipment should be performed only by cuit tests Live circuits may be exposed qualified service personnel The unit should be unplugged when servicing except when electri cal tests are required When the Brix is Off continued Probable Cause Drink too warm Refrigeration switch Turn on refrigeration switch of Le Condenser dirty Have condenser cleaned Condenser obstructed Remove any objects blocking the air flow in or out of the unit Circulator switch off Turn on circulator switch and allow time for drinks to cool Note If service is required you can continue to dispense cold drinks by completing follow ing this procedure Turn off the compressor switch and agi tator switch Drain the water from the water bath Re install the grey plastic over flow pipe Fill water bath with ice from the ice ma chine Monitor frequently Refill as needed Not enough carbon CO Shut off Valve off Open Shut off Valve ation CO cylinder empty Switch over to a new cylinder and dispense car bonated water until carbonation returns Product foaming Dirty or sanitizer soaked Clean or replace nozzles See Drink too warm under Problem above No syrup dispensed Empty syrup container Replace syrup container Air Compressor is off Turn on and plug in the Air Compressor Ch
9. 3 times per year Verify that incoming water pressure is not less than 40 psi 2 8 bar or greater than 60 psi 4 1 bar If equipped with a water regulator verify proper setting of 55 psi 3 8 bar Adjust if necessary If pressure is low inspect water filter cartridges to ensure they are able to supply adequate water pressure under normal system flow Replace if unable to provide minimum 20 psi 1 4 bar under load 00218012 Revision C KAK 1 November 2001 35 Multiplex Company Inc Fountain Troubleshooting Guide Maintenance Schedule continued Periodic maintenance for soft drink equipment listed by major components continued Syrup supply Daily 365 times per year Clean general area of syrup hookup with soap and warm water Rinse off all soap Every 4 months 3 times per year Inspect syrup lines for proper flavor identification labels Replace labels if necessary Disconnect syrup containers Clean connector with soap and warm water Rinse with plain water and reconnect to syrup containers COz gas supply Every 4 months 3 times per year Inspect pressure setting at CO2 high pressure regulator Verify proper 90 psi 6 3 bar pressure setting Adjust if necessary Inspect pressure setting at syrup pressure regulators Verify proper pressure setting Adjust if necessary Inspect system for COz leaks repair as required 36 00218012 Revision C KAK 1 November 2001 Multiplex Company Inc F
10. Adjust if necessary Inspect pressure setting at syrup pressure regulators Verify proper pressure setting Adjust if necessary Inspect system for COz leaks Repair as required 00218012 Revision C KAK 1 November 2001 37 Multiplex Company Inc Fountain Troubleshooting Guide Cleaning and Sanitizing the Dispensing Valves and Product Lines Maintenance schedule Everyday Dispensing Valves Remove nozzles and diffusers and soak in mild detergent cleaning solution Scrub parts with small bristle brush taking care to clean small crevices and O ring grooves Turn off power to dispensing valves Scrub exterior surfaces including bottom splash area and actuator lever with cleaning solution Reassemble diffusers and nozzles Wipe dry exterior surfaces before turning on power Everyday Drip pan and drain hose Wash with mild detergent Rinse with clean water Everyday Wash with mild detergent Rinse with potable water Weekly Outside dispenser cabinet Wash with clean water and mild detergent Wipe dry Every 3 months Syrup circuits Sanitize each syrup circuit See Cleaning and Sanitizing Procedure Every 6 months Vacuum fins or use soft bristle brush scrub brush Every 3 months Water bath Drain melt ice and clean using detergent and brush rinse with potable water Do not use water over 140 F 60 C Every 6 months Air purifier filter if equipped Replace Cleaning equipment and suppl
11. Pump and ruptured Motor Cycle on and off excessively Accu mulator Tank bladder ruptured Malfunction of Carbonated Refer to Troubleshooting Section 2 Carbon Water System ated Water System under Peculiar taste Prob able Cause Back Flow Preventer leaking 00218012 Revision C KAK 1 November 2001 31 Multiplex Company Inc Fountain Troubleshooting Guide Disconnect and lock eut all electrical power seurces before performing service or maintenance on this machine except when electrical testa are being performed by qualified service personnel Troubles hooting Guide WARNING DANGER OF ELECTRICAL SHOCK WARNING Inspection testing and repair of elec DANGER Use extreme care during electrical cir trical equipment should be performed only by cuit tests Live circuits may be exposed qualified service personnel The unit should be unplugged when servicing except when electri cal tests are required Section 10 Water Filter System Until repairs can be made on the Water Filter place valve handle into filter By pass position Carbon particles in fin Water By pass valve is not Verify By pass valve handle is in the Filter op ished drink in the filtering position erating position If particles continue to ap pear filter must be serviced Defective or damaged seal Verify O rings are not twisted or nicked Verify on Filter Cartridge Cartridge is solid and free of cr
12. antowoc Company 250 Old Ballwin Road St Louis Missouri 63021 4800 Tel 636 256 7777 Fax 636 527 4313 info multiplex beverage com www multiplex beverage com In accordance with our policy of continuous product development and improvement this information is subject to change at any time without notice 00218012 Revision C KAK 1 November 2001
13. proceeding to the second column Probable Causes Not all problems have Qualifiers but for those that do first examine each one listed below the Problem before continuing through Probable Causes The third heading Corrective Action found on the right margin will direct you in determining if the Probable Cause is actually responsible for the problem and what should be done to remedy the problem On occasion you ll find Note and Caution statements which have been included to make special references to items which frequently are misunderstood or ignored This guide is intended to assist you in locating the cause of a problem It is not however to be considered a service and repair manual in that Multiplex models vary in design It has been written to encompass all model Refrigeration Units Some differences from model to model will become obvious and it will be required of the reader to apply this guide to each unit Of main concern is on Dual Carbonating and Circulating Systems you must consider there are two separate Carbonating and Circulating Systems 2 00218012 Revision C KAK 1 November 2001 Multiplex Company Inc Fountain Troubleshooting Guide Problem Cross Reference Guide CO2 Electrical No carbonated water Carbon particles in drink Flat drinks No or insufficient non carbonated water Warm drinks No or insufficient syrup Peculiar taste carbonated water Peculiar taste non carbonated water Peculiar tas
14. 01 2 Flush the cleaning solution from the lines with clean water after a minimum of 3 minutes by pulsing the valves as described above Remove the nozzles and the diffuser assemblies from the valves Clean with cleaning solution Agitate the assemblies to assure assemblies are clean Place them in a container of sanitizing solution for 15 minutes Wearing sanitary gloves remove the nozzles and diffuser assemblies from the sanitizing solution Drain each until dry and reassemble to the valves Attach each valve product line to the pressure tank containing the sanitizing solution Be sure all connections are cleaned and sanitized before connecting to each product line Pressurize and fill the lines with sanitizing solution Make sure lines are completely filled Allow the sanitizing solution to flow through each valve while activating the valves for 15 cycles as described in Pressurizing the product lines a Leave valves off and allow to stand pressurized for 30 minutes b Activate the valves for two 2 cycles as described in Pressurizing the product lines Flush remaining sanitizer continuously through the valves Reconnect the syrup containers to their respective circuits Prepare the unit for operation Draw drinks to refill lines and flush the sanitizing solution from the dispenser Taste the beverage to verify that there is no off taste chlorine 39 MIME UL S2 A Q
15. 8012 Revision C KAK 1 November 2001 Troubleshooting Guide Multiplex Company Inc Fountain Troubleshooting Guide WARNING DANGER OF ELECTRICAL SHOCK Discennect and lec kout all electrical power seurzes before performing service or maintenance on this machine except when electrical testa are being performed by qualified service persennel WARNING Inspection testing and repair of elec DANGER Use extreme care during electrical cir trical equipment should be performed only by cuit tests Live circuits may be exposed qualified service personnel The unit should be unplugged when servicing except when electri cal tests are required Section 2 Carbonated Water System continued Carbonator pump and motor will not cycle off possibly noisy pump Little or no carbonated Primary CO2 Regulator ad water at dispensing justed at extremely high valve pressure Water supply to Carbon ator Pump shut off or re stricted Water Filter restricted Back Flow Preventer or Double Check Valve Carbonator Pump worn Coupling Key defective 00218012 Revision C KAK 1 November 2001 Verify CO2 Primary Regulators are set at 90 psi 6 3 kg cm Adjust if necessary If regulator will not star in adjustment replace regulator Verify water to unit by observing Filtered Wa ter Pressure Gauge It should register 55 psi 3 9 kg cm Examine Water Shut off Valves to carbonator and insure they are in t
16. Fountain roubleshooting Guide Fountain Beverage Dispensing Equipment MUERIBIPEX A Q amtowoc Company 250 Old Ballwin Road St Louis Missouri 63021 4800 Tel 636 256 7777 Fax 636 527 4313 info multiplex beverage com www multiplex beverage com In accordance with our policy of continuous product development and improvement this information is subject to change at any time without notice 00218012 Revision C KAK 1 November 2001 Multiplex Company Inc Fountain Troubleshooting Guide Table of Contents Caution T Avoid Serious INjUPY ssiccdscccadeescesonsacssasgestpeapactachsonsonamcdacesd bonadnacatudedacigasaadeades 1 FOPOWONG ox dsccacaicasenaseedingsssasabraiahacdeeoaesiensenancoensermiindacsacanisaasnaieesesaiasneaaniambacainoaenaaeesnas 2 Problem Cross Reference GUIDE sicsinsaciscssssssnsenancosmsanmednincsnentearseniasncadessemasnenadecaensenesannces 3 Troubleshooting Guide ccscsesssicnecscoedovasediwaeswsonscsavardadden cesses headssudoceesadeancaes AE ESES PEA 4 Section 1 CO2 Gas Syste cccivcssssannsencasseniacdneniecasdanseuvenansasue sigesaennacdewateantesadcesdeosnncoense 4 LOSS OF CO vi rsimnincsdeneccsandenavctcancarauranrsseicasieavewnieadestantasentd eaveressaamienaieisknoaeaetanyaeens 4 Flat drinks lack of carbonation in carbonated water ba be eae D Section 2 Carbonated Water System eeeee eee eee ae ew A PLAC SINKS cer conincsnerecscanseniseserscasaaresnincsvesdes
17. Inspection testing and repair of elec DANGER Use extreme care during electrical cir trical equipment should be performed only by cuit tests Live circuits may be exposed qualified service personnel The unit should be unplugged when servicing except when electri cal tests are required Section 2 Carbonated Water System Probable Cause Corrective Action Flat drinks Malfunctioning of Re Beverages at dispensing Refer to Troubleshooting Section 7 Refrigera frigeration System tower are above 40 F tion System under Warm drinks 5 C Malfunctioning of Circu Refer to Troubleshooting Section 3 Circulat lating System ing System under Warm drinks Beverages at dispensing CO2 supply exhausted Verify CO2 Tank pressure is a minimum of 500 psi tower are below 40 F 35 kg cm on Primary Pressure Regulator 5 C Gauge marked 0 2000 psi Switch to full tank if necessary Insure CO2 Shut off Valves to Carbonators are both in the on position Refer to Trouble shooting Section 1 CO2 Gas System under Flat drinks Primary CO2 Regulator out Verify CO2 Primary Regulators are set at 90 psi of adjustment or inopera 6 3 kg cm Adjust if necessary if Regulator tive will not stay in adjustment replace Regulator Water Regulator incor Verify Filtered Water Pressure Gauge registers rectly adjusted or inopera 55 psi 3 9 kg cm if higher than 55 psi flood tive ing of Carbonator will oc
18. acks Replace if necessary Filter Cartridge installed Remove Cartridge from Canister Clean Canis without Inlet Seal ter Lid and Shell assembly Replace with new Filter Cartridge making sure to remove Water Inlet Seal Defective carbonator Refer to Troubleshooting Section 2 Carbon Pump ated Water System Defective Circulating Refer to Troubleshooting Section 3 Circulat Pump ing System Carbonator and Water Restricted Water Filter Observe Filter Water Pressure Gauge If pres Booster Pump ex sure drops at total of 40 psi 2 8 bar or more tremely noisy when pump cycles on replace filter Filter Cartridge installed Removed Cartridge from Canister Clean Canis without removing Water ter Lid and Shell Assembly Install new Filter Inlet Seal Cartridge making sure to remove Cartridge Inlet Seal Water supply to Filer re Verify water supply is turned on to unit Re stricted fer to Troubleshooting Section 2 Carbonated Water System and Section 9 Water Booster System for additional solutions Peculiar taste Water Filter contami Place Filter valve into Filter By pass position nated Replace Filter and reposition valve handle to filter operating position 32 00218012 Revision C KAK 1 November 2001 Multiplex Company Inc Fountain Troubleshooting Guide Discennect and lec k out all electrical power seurzes before performing service or maintena
19. aedstceoesdeadimenacees 32 When the Brix 1s SO sscsscssimssannccscrecssacseconcegessessimsinacareosersieesaspestasaumianbacgdeoeeanenase 33 Maintenance Schedule sicsccsacsecsacas msdecarvescivatsnorarsacsacodesoacaansasaeieddconesacawtaddaresenceanadiccees 35 Periodic maintenance for soft drink equipment listed by major components eseeeeeee 35 Dispensing statins sisena dc scieeteiordwednesensoe stan scosadessleenewsedesesenieachan is iis 3D Daily 365 times per year 35 Beverage conduits ies 35 Every 4 months 3 times per year 35 Air COMPIESSOM sis isciissdcecesecamecdectace exe sae 3D Monthly 12 times per Year ci ccccccscsssespccanescesdssnacaienssadendeade spnesnepasmnseacecenenenzesiat 35 Every 4 months 3 times per Year ws csccciscnsdoecssensesdv ade congvasnaceecseceesisstiseendedsmasnasccaces 35 Refrigeration Unit ceceeeeeeee 35 Every 4 months 3 times per year ae des 25439 Water TLLGIS is wcc0ed cnrnanaaedeonsiens eases Ei s acento wes innn nnsa aiea nei a SEE 35 Every 4 months 3times per year scsrsrscmcscerseei ereitea inie aeaaaioii AE a Eo aa aii 35 SYMUP SUPPLY sccccccccticcssccsecneosceaceanes 36 Daily 365 times per year 36 Every 4 months 3 times per year 36 COz as SUPPLY sccccsccercssscescciacssccaces aaa see 36 Every 4 months 3 times per year cccceesecseceeeeeeeeeeseeceeeneeneenees saute 36 Periodic maintenance for soft drink equip
20. alve is inoperative Remove disassemble and clean out valve Replace refill Bath and allow carbon ator to cycle while inspecting valve to insure proper operation Replace if necessary Remove top cover from Remote Refrigeration Unit Inspect Water Bath at Stand Pipe If con siderable water is observed running over and out the drain there is a water leak inside Bath The leak causes the Ice Bank to melt as fast as it s formed Drain Bath to located the leak re pair and refill bath Examine Fan and Motor on Air Cooled Units at Condenser If either are found to be inopera tive while compressor is running replace inop erative fan or motor Caution Inoperative Fan and Motor can cause short cycling of compressor For Air Cooled Units clean the Condenser re moving all dust and lint On Water Cooled Units Using a thermometer verify temperature at water discharge line If operating outside of the 95 F 35 C to 105 F 41 C range adjust Water Modulating valve replace Caution Restricted Condenser can cause short cycling of compressor Verify the Refrigeration Unit is operating in a well ventilated area and that there are no ob structions blocking Condenser If so remove ob structions if inoperative Examine Sight Glass If bubbles appear while compressor is operating system is low on charge Refer to Serial Plate for proper refrig eration charge If no bubbles appear in Sight Glass then exam ine suction lin
21. ange over valve cen Position switch totally on either air or CO2 tered No carbonated water Carbonator turned off Turn on carbonator switch dispensed Water supply turned off Turn on water to the system Product has an off Dirty nozzles Clean or replace nozzles taste Out of date syrup Replace with fresh syrup Saturated water filters Replace water filters 00218165 Revision A 34 00218012 Revision C KAK 1 November 2001 Multiplex Company Inc Fountain Troubleshooting Guide Maintenance Schedule This section provides a list of periodic maintenance tasks and the scheduled frequency required to ensure the proper operation of your Multiplex dispensing equipment To ensure quality beverages prevent down time and reduce costs these tasks must be performed as indicated Periodic maintenance for soft drink equipment listed by major components Dispensing stations Daily 365 times per year Take temperature of finished drinks Pour off the first and take the temperature of the second drink The proper temperature of drinks must be 40 F 4 C or less Remove nozzles and diffusers from each dispensing valve Clean with soap and warm water not hot Rinse with carbonated water and reinstall Flush all dispenser drains Pour hot water down drains at closing Beverage conduits Every 4 months 3 times per year Inspect beverage conduits for damage Re insulate and seal any
22. aste 18 00218012 Revision C KAK 1 November 2001 Multiplex Company Inc Fountain Troubleshooting Guide Discennect and leck out all electrical power sources before performing service or maintenance on this machine except when electrical testa are being performed by qualified service persennel Troubles hooting Guide WARNING DANGER GF ELECTRICAL SHOCK WARNING Inspection testing and repair of elec DANGER Use extreme care during electrical cir trical equipment should be performed only by cuit tests Live circuits may be exposed qualified service personnel The unit should be unplugged when servicing except when electri cal tests are required Section 5 Dispensing Valve and Tower Probable Cause Corrective Action All corresponding valves Malfunction of syrup sys Refer to Troubleshooting Section 8 Syrup Sys dispensing no syrup tem tem under No syrup or insufficient syrup in finished drink No syrup at only one Syrup Shut off Valve closed Remove top cover from Dispensing valve or dispensing valve or partially closed Tower Locate Syrup Shut off Valve on right hand side of Dispensing valve Verify shut off is turned fully open Mounting Block restricted Remove Dispensing valve from Mounting Block Place cup over Syrup outlet on Mounting Block and carefully open Syrup Shut off Valve If little or no syrup is present Mounting Block is re stricted Remove and clean mounting block Re pla
23. c tive and should be replaced The Secondary Control operates the Compressor until the Pri mary Control is replaced Note When the Refrigeration Compressor cycles on Warning Light will turn off When the Compressor cycles off the light will illuminate 27 Multiplex Company Inc Fountain Troubleshooting Guide Troubleshooting Guide WARNING Inspection testing and repair of elec trical equipment should be performed only by qualified service personnel The unit should be unplugged when servicing except when electri cal tests are required Section 8 Syrup System Probable Cause No syrup of insufficient syrup in finished drink 28 Syrup Tank is empty Kinked Syrup lines Low Pressure Regulator in operative Medium Pressure Regulator inoperative Check Relief valve re stricted Gas Syrup Tank Plug Valves inoperative Quick Disconnects Gas or Syrup not fully engaged on Syrup Tank Quick Disconnect Valves or Tank Jumper inoperative WARNING DANGER OF ELECTRICAL SHOCK Disconnect and lock aut ail electrical power sources before performing service or maintenance on this machine except when electrical testa are being performed by qualified service personnel DANGER Use extreme care during electrical cir cuit tests Live circuits may be exposed Corrective Action Replace Syrup tank and purge air out of Dis pensing Valves affected until steady syru
24. ce if necessary No syrup or insufficient syrup in finished drink No carbonated water at Flow Control our of adjust Readjust Flow Control to proper Brix If no re half or all dispensing ment or inoperative sponse clean Syrup Flow Control Replace if valves necessary Valve Port restricted Clean Syrup valve Port Assembly Solenoid Coil defective Replace Syrup Solenoid Coil Malfunction of Carbonated Refer to Troubleshooting Section 2 Carbon Water System ated Water System under No carbonated wa ter at any of the dispensing valves 00218012 Revision C KAK 1 November 2001 19 Multiplex Company Inc Fountain Troubleshooting Guide Troubleshooting Guide WARNING DANGER OF ELECTRICAL SHOCK Disconnect and lock eut all electrical power sources before performing service or maintenance on this machine except when electrical testa are being performed by qualified service personnel DANGER Use extreme care during electrical cir cuit tests Live circuits may be exposed WARNING Inspection testing and repair of elec trical equipment should be performed only by qualified service personnel The unit should be unplugged when servicing except when electri cal tests are required Section 5 Dispensing Valve and Tower continued Probable Cause No carbonated water or insufficient carbonated water in finished drink No Carbonated Water only at one dispensing Corrective Action Carbonat
25. ce personnel The unit should be unplugged when servicing except when electri cal tests are required Section 1 CO2 Gas System On units not equipped with Air Pump check all Probable Causes listed below Probable Cause Loss of COz If leak occurs while CO2 Tank leaking Use a soap solution around CO2 Tank valve Stem Change over valve is to locate leaks If leaks are present bubbles positioned on Air follow will appear If valve Stem leaks at Tank replace the Probable Causes CO2 Tank for units equipped with Air Pump CO2 Washer damaged or Use a soap solution around Primary Regulator missing Coupling Nut and CO Tank Stem If bubbles ap pear remove Regulator and replace CO2 Washer found inside Nut Secure Regulator to Tank and check for leaks Primary Regulator Dia Use a soap solution around Primary Regulator phragm leaking Adjustment Screw in Bonnet If bubbles appear diaphragm is leading Replace Primary Regula tor Ruptured Line Assembly or Use a soap solution around all connections If leaks at connections bubbles appear tighten loose connections care fully A to B Change over Valve Use a soap solution around A and B CO2 Tank leaking Change over Valve tighten if bubbles appear at Connections to stop leaks CO2 Low Pressure Switch Use a soap solution around Low Pressure CO2 leaking Switch If bubbles appear at pipe tighten Con nection If bubbles appear at Terminal end of Switch
26. ctive Action Verify power with a voltmeter at wall outlet Verify power across low voltage leads on trans former If 24 volts are present on and off Toggle Switch is defective Replace Verify Main Power Supply and power at Trans former Leads replace on and off Switch if operative Trace wiring on defective valve and reconnect any loose wires Clean and reconnect any cor roded connections Replace the problem valve Portion Control Timer with a known Operative Timer If valve then operates Portion Control Timer was de fective Replace Replace defective Portion Control Timer with operative Timer If Valves still will not activate Selection Panel is defective Replace Selection Switch Examine Contact Clips on Selection Panel and insure proper contact between Portion Control Timer and Contact Clips Remove top cover from Dispensing Tower Re move all moisture from Portion Control Timer and Contacts Turn Portion Control Adjustment Screws on de fective valve counterclockwise 10 complete turns If valve shuts off when selection is pressed readjust for proper portions Note Several revolutions may be necessary to bring control back into range Verify above probables are not the problem Push on off Switch for Dispensing Tower to the off position If valve ceases to dispense when pushed to on position Portion Control Timer is defective Replace Push on off Switch fo
27. cur To adjust loosen Locknut turn Adjustment Screw clockwise to increase counterclockwise to decrease If regu lator will not respond to adjustments replace regulator Improper water treat Verify By pass handle is in the filter operat ment ing position Insure Filter Cartridge is still ef fective if necessary replace Cartridge Refer to Troubleshooting Section 10 Water Filter System Carbonator Pump worn Dispense Carbonated Water while listening for Brass pump carbonator pump and motor to cycle on at Refrigeration Unit Pumps should operated be tween 6 to 12 seconds before cycling off If operating time exceeds 30 seconds carbonator pump is worn replace Pump Pressure Relief Valve is Remove top cover from Remote Refrigeration leaking Unit Dispense Carbonated Water until carbon ator Pumps and Motor cycle on Observe Pres sure Relief Valves on carbonator Tank If water is observed escaping from either replace leak ing Relief valve Note Do not confuse the Water Bath Make up valve for the carbonator Tank Relief valves 00218012 Revision C KAK 1 November 2001 7 Multiplex Company Inc Fountain Troubleshooting Guide Disconnect and lock eut all electrical power sources before performing service or maintenance on this machine except when electrical testa are being performed by qualified service personnel Troubles hooting Guide WARNING DANGER OF ELECTRICAL SHOCK
28. d leck out all electrical power sources before performing service or maintenance on this machine except when electrical testa are being performed by qualified service persennel DANGER Use extreme care during electrical cir cuit tests Live circuits may be exposed Section 5 Dispensing Valve and Tower continued Probable Cause No water or insufficient water in finished drinks All valves dispensing noncarbonated drinks no water Problem occurs at only one dispensing valve Too much Syrup Car bonated Water or Water in finished drink Prob lem occurs at only one dispensing valve Too much syrup in fin ished drink All valves dispensing same flavor too much syrup Too much water in fin ished drink All valves dispensing noncarbon ated drink too much water Syrup or Carbonated Water or Water dripping from Nozzle Valves will not activate when Selection Panel pressed Problem oc curs at two 2 or three 3 consecutive Valves on one 1 tower Water Shut off Valve closed or partially closed Syrup carbonated water or noncarbonated water flow control out of adjust ment or inoperative Malfunction of syrup sys tem Malfunction of water Booster system Valve port scarred Armature Spring or Retain ing Ring broken Seat scarred or obstructed Transformer inoperative Dispensing tower s on and off Toggle defec tive 00218012 Revision C KAK 1 N
29. drops with Pressurized Filtered Water Gauge the Water Inlet Check valve on Pump is defective Replace Check valve Pressure Switch improp Observe Pressurized Filtered Water Pressure erly adjusted or defective Gauge to insure proper cycle on at 65 psi 4 6 kg cm and cycle off at 85 psi 6 0 kg cm Refer to instructions found un der Switch Cover for adjusting If Switch will not respond to adjustment replace switch Accumulator Tank pressure Push Toggle Switch and Water Shut off Valve to set improperly Booster Pump to the off position Activate Plain Water button until water flow ceases Using a tire gauge verify a 60 psi 4 2 kg cm charge on Tank Recharge if necessary Note When charging Accumulator Tank only AIR should be used Accumulator Tank bladder Repeat procedures above If water is found in ruptured side Air Chamber when verifying pressure charge bladder is ruptured Replace Accumu lator Tank Motor overheating Using a flat blade screwdriver loosen Coupling Clamp and disengage Pump from Motor Turn Coupling Key by hand in back of Pump If Cou pling Key is difficult to turn it may cause de fective Motor to overheat Replace Motor if necessary Peculiar taste in Non Water Filter contami Replace Filter Refer to Troubleshooting Sec carbonated beverages nated tion 10 Water Filter under Peculiar taste Accumulator Tank bladder Replace Accumulator Tank Refer to
30. e frost on the suction line is a sign of defective Expansion valve Replace if inoperative 25 Multiplex Company Inc Fountain Troubleshooting Guide Troubleshooting Guide WARNING Inspection testing and repair of elec trical equipment should be performed only by qualified service personnel The unit should be unplugged when servicing except when electri cal tests are required WARNING DANGER OF ELECTRICAL SHOCK Disconnect and lock eut all electrical power sources before performing service or maintenance on this machine except when electrical testa are being performed by qualified service personnel DANGER Use extreme care during electrical cir cuit tests Live circuits may be exposed Section 7 Refrigeration System continued Probable Cause Corrective Action Warm drinks carbonated water temperature over 40 F 5 C continued Compressor operates with Ice present at wa ter bath Compressor won t oper ate and no ice at water bath 26 Defective Agitator Motor Assembly Malfunctioning of Circulat ing System Defective Switch Fuse Circuit Breaker open Time Delay Fuse burned out Defective High Pressure Control Defective Ice Bank Con trol Defective Contactor Defective Relay or Defec tive Capacitor or Defective Overload Defective compressor Remove top cover from Remote Refrigeration Unit Examine the Agitator Motor Assembly in sur
31. e personnel The unit should be unplugged when servicing except when electri cal tests are required Section 2 Carbonated Water System continued Carbonator pump and motor will not cycle off possibly noisy pump continued Carbonated Water at Liquid Level Control defec Shut off main power supply to unit and push dispensing valve tive Toggle Switch for Carbonator and Circulator to the off position Remove Electrical Access Panel from Refrigeration Unit and locate Liq uid Level Control Strip a 1 1 2 3 8 cm piece of solid strand wire of insulation to use as a jumper Turn main power supply unit on to unit With a pair of insulated pliers jump across Terminals marked G H and L on Liquid Level Control Simultaneously while pushing corre sponding Toggle Switch to carbonator to the on position If carbonator pump and motor continue to operate after Liquid Level Control Jumper Wire is in place Liquid Level Control is defective replace Electrode defective Examine wire leads to insure no breaks in con nections Remove and clean Electrode with find sand paper and reinstall Note Reversing Electrode Wire Leads on ei ther electrode or Liquid Level Control will cause erratic operation of carbonator Motor Refer to Wiring Diagram Peculiar taste in car Water filter contaminated Refer to Troubleshooting Section 10 Water bonated water only Filter System under Peculia
32. e propeller is secured to Agitator and that the Agitator Switch is in the on position al lowing the water in Bath to be agitated across the cooling coils If Motor or Propeller is inop erative replace If ice is present on Evaporator Coil and Agita tor Motor Assembly is operating the Refrigera tion System is functioning However the Cir culating System may not be functioning Refer to Troubleshooting Section 3 Circulating Sys tem Caution Always make certain that proper line voltage is present Check to insure Refrigeration Switch is in the on position Locate Circuit Breaker box and identify proper breaker for Remote Refrigeration Unit Insure it is in the on position by switching off and then on again If breaker will not reset refer to Troubleshooting Section 6 Electrical System Inspect Time Delay Fuses at the wall quick shut off panel One of the fuses may be burned out causing half the unit to shut down If this is suspected replace all of the fuses Examine High Pressure Control to insure wire leads are securely attached to terminals If trouble is suspected with control replace Remove Electrical Access Panel and using a volt meter across the Ice Bank Control verify con trol is in the closed position If control is found to be in the open position that Con trol should be replaced Remove Electrical Access Panel Use a voltme ter across Contactor C
33. ed by qualified service personnel WARNING Inspection testing and repair of elec DANGER Use extreme care during electrical cir trical equipment should be performed only by cuit tests Live circuits may be exposed qualified service personnel The unit should be unplugged when servicing except when electri cal tests are required Section 6 Electrical System Probable Cause Corrective Action Fuse Circuit Breaker is Short Circuit or overload Push Toggle Switches labeled carbonator and open within unit circulator to the off position Push the Toggle Switches for Booster Pump Air Compressor Agi tator and Refrigeration to the off position Replace fuse s and reset circuit breaker Push the Toggle Switches on in the following se quence as labeled below to locate short or overload within unit waiting momentarily be tween steps Agitator Refrigeration Carbon ator A and or B Circulator A and or B after carbonator Motor Cycles off Booster Pump Air Compressor Push the Agitator Toggle Switch in the on position If the fuse circuit breaker opens the trouble is in the Agitator Motor Circuit This Circuit must be checked for shorts and or over load If the fuse circuit breaker does not open after running about 1 minute the problem is not in the Agitator Motor Circuit Push the Refrigeration Toggle Switch in the on position If the fuses circuit breaker opens the troub
34. ed water Shut off Remove top cover from Dispensing valve or Valve closed or partially Tower Locate Carbonated Water Shut off Valve valve closed Mounting Block restricted Flow Control our of adjust ment or inoperative on left hand side of Dispensing valve Verify Shut off Valve is turned fully open Remove Dispensing valve from Mounting Block Place cup over Carbonated Water outlet on Mounting Block and carefully open Carbonated Water Shut off Valve If little or no Carbonated Water is present Mounting Block is restricted Remove and clean mounting block Replace if necessary Readjust Flow Control to proper Brix 5 oz in 4 seconds Standard valve 10 oz in 4 seconds Fast Flow valve If no response clean Carbon ated Water Flow Control Replace if necessary Valve Port restricted Clean Carbonated Water valve Port Assembly Seat swollen Replace Carbonated Water Seat Solenoid Coil defective Replace Carbonated Water Solenoid Coil Carbonated Water Switch defective black 20 Replaced Carbonated Water Switch 00218012 Revision C KAK 1 November 2001 Troubleshooting Guide WARNING Inspection testing and repair of elec trical equipment should be performed only by qualified service personnel The unit should be unplugged when servicing except when electri cal tests are required Multiplex Company Inc Fountain Troubleshooting Guide WARNING DANGER OF ELECTRICAL SHOCK Discennect an
35. erature is at 105 F 41 C Adjust water modulating valve if necessary Inspect water bath to verify water level is at the top of stand pipe If below add water and repair water makeup device If excessive amount of water is flowing over stand pipe locate leak within bath and repair Inspect ice bank within the water bath to verify proper size ice bank and clarity Look for uniform 2 to 4 thick ice bank Drain clean and refill water bath Inspect agitator motor and ensure proper operation Inspect the circulating motor pump assembly Clean strainer and oil motor Inspect the carbonating motor pump assembly Clean strainer and oil motor Inspect entire system for leaks and repair as required Verify that incoming water pressure is not less than 40 psi 2 8 bar or greater than 60 psi 4 1 bar If equipped with a water regulator verify proper setting of 55 psi 3 8 bar Adjust if necessary If pressure is low inspect water filter cartridges to ensure they are able to supply adequate water pressure under normal system flow Replace if unable to provide minimum 20 psi 1 4 bar under load Inspect syrup lines for proper flavor identification labels replace labels if necessary Disconnect syrup containers clean connector with soap and warm water rinse with plain water and reconnect to syrup containers Inspect pressure setting at CO2 high pressure regulators Verify proper 90 psi pressure setting
36. et at 90 psi foaming 6 3 kg cm Adjust if necessary If Regulator will not stay in adjustment replace regulator Replace Low Pressure CO2 Warn Warning lamp or buzzer When CO2 Tank is empty and CO2 warning ing light or buzzer does burned out Transformer lamp s or buzzer fail verify voltage across not come on inoperative Transformer If no voltage replace Transformer Pressure Switch defective If CO2 Warning lamps or buzzer and transformer are operative Pressure Switch is defective and must be replaced 00218012 Revision C KAK 1 November 2001 5 Multiplex Company Inc Fountain Troubleshooting Guide Disconnect and lock eut all electrical power sources before performing service or maintenance on this machine except when electrical testa are being performed by qualified service personnel Troubles hooting Guide WARNING DANGER OF ELECTRICAL SHOCK WARNING Inspection testing and repair of elec DANGER Use extreme care during electrical cir trical equipment should be performed only by cuit tests Live circuits may be exposed qualified service personnel The unit should be unplugged when servicing except when electri cal tests are required Section 1 CO2 Gas System continued Probable Cause Corrective Action Flat drinks lack of carbonation in carbonated water continued Low Pressure CO2 Warn Leaks on system If leaks exist on CO2 System not enough pres ing ligh
37. he on po sition Examine Pump Strainer for restriction Clean if necessary Place Filter By pass valve into the Filter By pass position If carbonator pump and motor immediately cycle off Filter Cartridge is re stricted Replace Cartridge Examine Filter Water Pressure Gauge If it reg isters 90 psi 6 3 kg cm CO2 gas is passing from the carbonator tank and through the Back Flow Preventer or Double Check Valve preventing water from entering pump Clean or replace Back Flow Preventer Double Check Valve Remove top cover from Remote Refrigeration Unit Locate Toggle Relief Valve on Carbonator Tank and lift lever to allow CO2 gas to escape from Tank for 30 seconds If during this time Carbonator Pump cycles off pump is worn and should be replaced Loosen the Coupling Clamp with a flat blade screwdriver and disengage Pump from Motor Examine Coupling Key in Pump If defective replace 11 Multiplex Company Inc Fountain Troubleshooting Guide Disconnect and lock eut all electrical power sources before performing service or maintenance on this machine except when electrical testa are being performed by qualified service personnel Troubles hooting Guide WARNING DANGER OF ELECTRICAL SHOCK WARNING Inspection testing and repair of elec DANGER Use extreme care during electrical cir trical equipment should be performed only by cuit tests Live circuits may be exposed qualified servic
38. he Motor is defective and should be replaced Dispense approximately 1 gallon of carbonated water at dispensing valves If temperature of carbonated water drops Circulating pump is not operating Examine Coupling Key found between Pump and Motor Shaft If coupling key is defective replace If key is operational Cir culating pump is defective replace Refer to Troubleshooting Section 10 Water Filter System under Carbon particles in fin ished drinks Refer to Troubleshooting Section 2 Carbon ated Water System under Carbon particles in finished drinks Remove top cover from Refrigeration Unit Loosen Coupling Clamp with a flat blade screw driver and disengage Pump from Motor Turn Pump shaft with screwdriver If Pump does not turn freely and or carbon is found in Pump carbon veins in pump are defective Replace Circulating Pump 00218012 Revision C KAK 1 November 2001 Multiplex Company Inc Fountain Troubleshooting Guide Discennect and leck out all electrical power sources before performing service or maintenance on this machine except when electrical testa are being performed by qualified service persennel Troubles hooting Guide WARNING DANGER GF ELECTRICAL SHOCK WARNING Inspection testing and repair of elec DANGER Use extreme care during electrical cir trical equipment should be performed only by cuit tests Live circuits may be exposed qualified service personnel The unit shou
39. i 4 2 kg cm Adjust Medium Pres sure Regulator if necessary Verify pressure sup plied to diet product is at 15 psi 1 1 kg cm Adjust Low Pressure Regulator if necessary Note Insure the Low Pressure Supply Line has not mistakenly been switched for a Medium Pressure Supply Line on the diet tank Change over Valve Medium Verify valve Medium to Low Pressure is in the or Low Pressure is in the Low Pressure position for diet products wrong position Air or CO gas in syrup line Replace empty Syrup Tank Dispense Syrup from valve until consistent flow is achieved and prod uct stabilizes If evidence of air is still enter ing line replace Liquid Disconnect which is al lowing air to be drawn into syrup supply Flake ice Only cube ice should be used for carbonated beverages Improper adjustment of valve Insure carbonated water flow is properly set 5 oz in 4 seconds standard valve 10 oz in 4 seconds Fast Flow valve Insure Brix is prop erly set Adjust as necessary Check Circuit Breaker Reset Examine Time De lay replace if necessary Power failure all power to system is off or Fuse Circuit Breaker is open 23 Multiplex Company Inc Fountain Troubleshooting Guide Troubles hooting Guide WARNING DANGER OF ELECTRICAL SHOCK Disconnect and lock aut all electrical power sources before performing service or maintenance on this machine except when electrical testa are being perform
40. ies Two five gallon figals syrup tanks and OC fittings cleaned and sanitized one for o PFI Recommended cleaner A C Fergusson cleaner one for sanitizer Company 3391 or any caustic base low sudsing non perfumed easily rinsed Containers for cleaner and sanitizer solutions detergent solution which provides a minimum 2 sodium hydroxide The solution should be Clean non abrasive cloths prepared in accordance with the manufacturer s instructions Solution Bucket temperature should be between 90 F 32 C to small Brush 110 F 43 C Temperatures in excess of this can cause internal damage to the dispensing Extra Nozzles valve components Extra Jumpers Recommended sanitizer A C Fergusson Company SuperChlor or any sanitizer which provided a minimum of 120 parts per million 120 milligrams per liter of available chlorine Solution temperature should be between 90 F 32 C to 110 F 43 C Temperatures in excess of this can cause internal damage to the dispensing valve components E1684708 Revision B 38 00218012 Revision C KAK 1 November 2001 Multiplex Company Inc Fountain Troubleshooting Guide Cleaning and Sanitizing the Dispensing Valves and Product Lines continued Cleaning and sanitizing procedure Note Cleaning and sanitizing is not required for potable water circuits Potable water lines should remain connected and operational during the clean ing and sanitizing proced
41. ilter By pass position Replace Cartridge Filter Reposi tion valve handle to operating position Water Inlet strainer Remove Filter Screen from Inlet Strainer in car clogged bonator Pump Brass flush with water to clean and reassemble Liquid Level Control defec Push Toggle Switch for carbonator and circula tive tor to the off position Shut off Main Power Supply unit Remove electrical Access Panel from unit Locate liquid level control Using a pair of insulated needle nose pliers carefully remove the white wire from the terminal marked H and the black wire from the ter minal marked L on the Liquid Level Control Board Position safely to side Turn on Main Power Supply Push carbonator Switch to the on position If carbonator pump and motor do not cycle on immediately that Liquid Level Control is defective Replace Electrode Assembly defec If Liquid Level Control is operating test the tive Electrode Assembly refer to Probable Cause Liquid Level Control Defective Verify wire leads are dry and that they are not touching If not replace Electrode 00218012 Revision C KAK 1 November 2001 9 Multiplex Company Inc Fountain Troubleshooting Guide Disconnect and lock aut all electrical power sources before performing service or maintenance on this machine except when electrical testa are being performed by qualified service personnel Troubles hooting Guide
42. ises of the proper Corrective Action to be taken to remedy that Problem Because of the ever present danger from electrical shock and the existence of high pressure water and gas on the system it is strongly recommended that only qualified service personnel perform actual repairs To use this guide you should first recognize the Problem Once this has been accomplished you should refer to the Problem Cross Reference Guide which will direct you to the troubleshooting section or sections which may be responsible for that particular Problem Under each of the sections Section 1 CO2 Gas System Section 2 Carbonated Water System Section 3 Circulating System Section 4 Compressed Air System Section 5 Dispensing valve and tower Section 6 Electrical System Section 7 Refrigeration System Section 8 Syrup System Section 9 Water Booster System and Section 10 Water Filter System you ll first find the Problem listed in bold type starting on the left margin It will be followed by three headings also in bold type and each with its own column The first is a Qualifier which is designed to quickly qualify or eliminate the Probable Causes listed to the right and below the qualifying statement Example Under Section 7 Refrigeration System you ll find three Qualifiers for the same problem Warm drinks Carbonated Water Temperature over 40 F 5 C Each asking you to determine the status of the Refrigeration Compressor and Ice Bank before
43. k Control Refrigeration Warning Light cycles on and off with Compressor 00218012 Revision C KAK 1 November 2001 Malfunctioning of Carbon Corrective Action If CO2 gas is present at the Dispensing Valves and there is no water the problem is in the Carbonated Water System Refer to Trouble shooting Section 2 Carbonated Water Sys tem In a freeze up situation push Refrigeration and Agitator Toggle Switches to the off posi tion Drain water from Bath Pour lukewarm never hot water over the Product Coils until thawed Ice down Water Bath using ice from Ice Maker until further repairs can be made Examine the Agitator Motor Assembly Insure Propeller is operating and secured to Agitator and that the Agitator Toggle Switch is in the on position If Motor is inoperative replace Remove Electrical Access Panel Use a voltme ter across the Ice Bank Control Verify Control is in the open position If Control is stuck in the closed position the unit will freeze up Replace Control if necessary If unit builds and Ice Bank to the point of extending into stain less steel coils the Ice Bank Control must be replaced Use a voltmeter across Contactor Coil If no current is present across Coil but Contactor remains closed Contactor is defective Re place defective Contactor When the Refrigeration Warning Light illumi nates the Primary Ice Bank Control is defe
44. k aut all electrical power sources before performing service or maintenance on this machine except when electrical testa are being performed by qualified service personnel DANGER Use extreme care during electrical cir cuit tests Live circuits may be exposed Until repairs can be made on Compressed Air System place Air COz Change over Valve in the CO2 Oper ating position Probable Cause Corrective Action No syrup Air Compressor will not cycle on and Air Pres sure Gauge registers 0 psi sor Motor defective No power to Air Compres Pressure Switch defective Verify Toggle Switch to Air Compressor is in the on position and main power supply is on Remove Pressure Switch Cover and use a volt meter across Switch to determine whether open or closed If in open position re place switch Verify voltage across Motor with a voltmeter if Motor Pump assembly will not operate it is de fective and should be replaced Same as above for Motor defective Air Compressor cycles on and off and Air Pressure Gauge readings range between 70 psi 4 9 kg cm to 90 psi 6 3 kg cm tion Malfunction of Syrup Sys tem Malfunction of Refrigera tion System 16 Air CO2 Change over Valve placed in incorrect posi Place Air CO2z Change over Valve to the Air or CO operating position Note If lever is positioned between Air and COz the gas su
45. ld be unplugged when servicing except when electri cal tests are required Section 3 Circulating System continued Probable Cause Corrective Action Warm drinks continued CO2 gas is present at Malfunction of Refrigera Refer to Troubleshooting Section 7 Refrigera dispensing valves but no tion System tion System under No carbonated water at carbonated water dispensing valve freeze up Particles obstructing flow Remove top cover from Remote Refrigeration through Circulating Circuit Push toggle switch to carbonator and circula In line Strainer tor to the off position Lift lever on Toggle Relief valve at top of carbonator Tank until pres sure is completely released Remove In line Strainer Screen Flush with clean water and re assemble Malfunction of Carbonating If CO2 gas is present at the Dispensing Valves System and there is no water the problem is in the Carbonated Water System Refer to Trouble shooting Section 2 Carbonated Water Sys tem 00218012 Revision C KAK 1 November 2001 15 Multiplex Company Inc Fountain Troubleshooting Guide Troubleshooting Guide WARNING Inspection testing and repair of elec trical equipment should be performed only by qualified service personnel The unit should be unplugged when servicing except when electri cal tests are required Section 4 Compressed Air System WARNING DANGER OF ELECTRICAL SHOCK Disconnect and loc
46. le is in the Refrigeration Cir cuit Refer to wiring diagram for possible faulty components Push the carbonator Toggle Switch A to the on position Draw Carbonated Wa ter from the Dispensing valve until Pump cycles If the fuse circuit breaker opens the trouble is in the carbonator Circuit Refer to wiring dia gram for possible faulty components Push the carbonator Toggle Switch B to the on position Follow procedure above for carbon ator A Push the Circulator Toggle Switch A to the on position If fuse circuit breaker opens the trouble is in the Circulator Circuit Refer to wiring diagram for possible faulty com ponents Push the Circulator Toggle Switch B to the on position Follow procedure above for Circulator A Push the Booster Pump Toggle Switch to the on position allow unit to cycle If fuse cir cuit breaker opens the trouble is in the Booster Pump Circuit Refer to wiring diagram for pos sible faulty components Push the Air Compressor Toggle Switch to the on position Allow unit to cycle If fuse circuit breaker opens the trouble is in the Air Compressor Circuit Refer to wiring diagram for possible faulty components Important Note Worn out Circuit Breakers or low voltage are frequently responsible for shorts and overloads Contact service agent to examine possible defective Circuit Breakers or low voltage 24 00218012 Revision C KAK 1 November 2001 Troublesho
47. lugs observe Quick Disconnects Tank Cap and Gas ket Tank Plugs and Syrup Tank O rings for leaks Repair and replace if necessary Syrup Filter restricted Disengage Syrup Quick Disconnect from the ap propriate Syrup Tank Relieve pressure at the corresponding Dispensing valve Remove the Screw clamp and the Filter Screen Wash the Filter Screen with warm water and reassemble Frozen Syrup Coil Refer to Troubleshooting Section 7 Refrigera tion System under No carbonated water at any of the dispensing valves Freeze up Dispensing valve inopera Refer to Troubleshooting Section 5 Dispens tive ing Valve and Tower under No syrup or insuf ficient syrup Drinks too sweet Low Pressure Regulator in Verify Low Pressure Regulator set at 15 psi operative 1 1 kg cm Adjust Regulator if necessary If Regulator will not respond repair or replace Regulator Medium Pressure Regulator Verify Medium Pressure Regulator set at 60 psi inoperative 4 2 kg cm Adjust Regulator if necessary If Regulator will not respond repair or replace Regulator Dispensing valve inopera Refer to Troubleshooting Section 5 Dispens tive ing Valve and Tower under Too much syrup in finished drink Peculiar taste Contaminated Syrup Replace tank and sanitize the system 00218012 Revision C KAK 1 November 2001 29 Multiplex Company Inc Fountain Troubleshooting Guide Troubleshooting Guide WARNING I
48. ment listed by scheduled frequency seseeeee 37 Daily 365tiMes PErVear i cicccccnnceeccecssesusensterecshondonasaaperssodendenacacesonasaeiaonneszesncsacs 37 Every 4 months 3 times per Year sicc cccdcdesieecaisdaensosasaiscasnse tea siia ena aeai rE Eaa 37 Cleaning and Sanitizing the Dispensing Valves and Product Lines ssssssesssrresserrresererererreresee 38 Maintenance schedule icc citsioninsnscionsatnenradnencedeseeseansnnaseideocanannsbad OLTE EENE inis Cleaning equipment and supplies Cleaning and sanitizing procedure Cleaning the dispensing valves Cleaning the product lines Pressurizing the product lines 00218012 Revision C KAK 1 November 2001 Multiplex Company Inc Fountain Troubleshooting Guide Caution To Avoid Serious Injury Important Read the following warnings raed hath beginning an installation Failure to do so may result in possible deat DO DO DO DO DO DO DO DO DO NOT DO NOT DO NOT DO NOT DO NOT or serious injury Mad to all National and Local Plumbing and Electrical Safety odes Turn off incoming electrical service switches when servicing installing or repairing equipment Check that all flare fittings on the carbonation tank s are tight This check should be performed with a wrench to ensure a quality seal Inspect pressure on Regulators before starting up equipment Protect eyes when working around refrigera
49. nce on this machine except when electrical testa are being performed by qualified service persennel Troubles hooting Guide WARNING DANGER OF ELECTRICAL SHOCK WARNING Inspection testing and repair of elec DANGER Use extreme care during electrical cir trical equipment should be performed only by cuit tests Live circuits may be exposed qualified service personnel The unit should be unplugged when servicing except when electri cal tests are required When the Brix is Off Air Compressor Bag In Box Usage Medium Syrup Pressure 70 psi 4 8 bar On 90 psi 6 2 bar Off Filtered Water Pressure Syrup Tanks Usage Maximum Efficiency 55 psi 3 8 bar Low Syrup Medium Syrup Pressure Pressure 15 psi 1 0 bar 60 psi 4 1 bar Pressurized Filtered Water Pressure Water Booster CO2 High Pressure ad BOF jod a 129 ra 140 a 90 psi 6 2 bar Drink Temperature Below 39 F 3 9 C 65 psi 4 5 bar On 85 psi 5 9 bar Off 00218165 Revision A 00218012 Revision C KAK 1 November 2001 33 Multiplex Company Inc Fountain Troubleshooting Guide Disconnect and lock sut all electrical power sources before performing service or maintenance on this machine except when electrical testa are being performed by qualified service personnel Troubles hooting Guide WARNING DANGER OF ELECTRICAL SHOCK WARNING Inspection
50. nspection testing and repair of elec trical equipment should be performed only by WARNING DANGER OF ELECTRICAL SHOCK Disconnect and lock eut all electrical power sources before performing service or maintenance on this machine except when electrical testa are being performed by qualified service personnel DANGER Use extreme care during electrical cir cuit tests Live circuits may be exposed qualified service personnel The unit should be unplugged when servicing except when electri cal tests are required Section 9 Water Booster System Probable Cause Corrective Action Low or no water pressure at noncarbonated beverages Water Booster will not cycle on Both the pressurized filter water and filtered water pres sure register 55 psi 3 8 bar Water Booster cycles on and off and pressurized Filtered Water Gauged readings range between 65 psi 4 6 kg cm to 85 psi 6 0 kg cm Pump and Motor will not cycle off 30 No power to Water Booster Pump Verify Toggle Switch for Booster Pump is in the on position and main power supply is on Remove Pressure Switch Cover and use a volt meter across terminals to determine whether open or closed If in the open position replace Switch Pressure Switch defective Motor defective If Motor will not operate verify voltage across Motor Terminals with a voltmeter If voltage reads fr
51. nts Use caution when handling metal surface edges of all equipment Handle CO2 cylinders and gauges with care Secure cylinders properly against abrasion Store CO2 cylinder s in well ventilated areas Throw or drop a CO cylinder Secure the cylinder s in an upright position with a chain Connect the CO cylinder s directly to the product container Doing so will result in an explosion causing possible death or injury Best to connect the CO cylinder s to a regulator s Store CO cylinders in temperature above 125 F 51 7 C near furnaces radiator or sources of heat Release CO2 gas from old cylinder Touch Refrigeration lines inside units some may exceed temperatures of 200 F 93 3 C Notice Water pipe connections and fixtures directly connected to a potable water supply s all be sized installed and maintained in accordance with Federal State and Local codes WARNING DANGER OF ELECTRICAL SHOCK Disconnect and lock out all electrical power sources before performing service or maintenance on this machine except when electrical tests are being performed by qualified service personnel 00218012 Revision C KAK 1 November 2001 1 Multiplex Company Inc Fountain Troubleshooting Guide Foreword This Troubleshooting Guide has been developed to assist you in determining what the Probable Cause for any particular Problem you may experience with your Multiplex Beverage System could be It then adv
52. off cycle use a soap solution around Head Gasket on Motor Pump Assembly If bubbles appear replace Check valve located on the Air Accumulator Tank 17 Multiplex Company Inc Fountain Troubleshooting Guide Disconnect and lock eut all electrical power sources before performing service or maintenance on this machine except when electrical testa are being performed by qualified service personnel Troubles hooting Guide WARNING DANGER OF ELECTRICAL SHOCK WARNING Inspection testing and repair of elec DANGER Use extreme care during electrical cir trical equipment should be performed only by cuit tests Live circuits may be exposed qualified service personnel The unit should be unplugged when servicing except when electri cal tests are required Section 4 Compressed Air System continued Probable Cause Corrective Action No syrup continued Peculiar taste in fin Contaminated Germicidal Replace Germicidal Filter ished product Filter on Air Compressor Note This filter is not designed to be cleaned but must be replaced when exhausted Water in Air Accumulator Drain trapped water from tank by removing Tank Drain Line from top of Automatic Drain Disas semble and clean Automatic Drain If unit is not equipped with automatic drain use pet cock to remove water from tank Water Filter contami Refer to Troubleshooting Section 10 Water nated Filter System under Peculiar t
53. oil If current exists across Coil and Contactor remains open Contactor is defective Replace Examine Relay Capacitor Overload to insure wire leads are securely attached to terminals Replace any faulty components If after checking each of the above items you still experience problems test compressor for possible defects or grounding 00218012 Revision C KAK 1 November 2001 Troubleshooting Guide WARNING Inspection testing and repair of elec trical equipment should be performed only by qualified service personnel The unit should be unplugged when servicing except when electri cal tests are required Multiplex Company Inc Fountain Troubleshooting Guide WARNING DANGER OF ELECTRICAL SHOCK Discennect and leck out all electrical power sources before performing service or maintenance on this machine except when electrical testa are being performed by qualified service persennel DANGER Use extreme care during electrical cir cuit tests Live circuits may be exposed Section 7 Refrigeration System continued Probable Cause No carbonated water at any of the dispensing valves CO2 gas is present at dispensing valves but no Carbonated Water ating System No CO2 Gas or water present at dispensing valve Defective Agitator Defective Ice Bank Con trol On units equipped with Defective Contactor the Red Refrigeration Warning Light Defective Primary Ice Ban
54. om 110 to 120 VAC the Motor is defec tive and should be replaced Pump frozen Loosen the Coupling Clamp with a flat blade screwdriver and disengage pump from Motor Turn the Coupling key by hand in back of pump If pump shaft will not spin freely Pump is de fective and must be replaced Examine Shut off Valve to Plain Water to Unit and Water to Coffee Machine and insure both are in the on position Water supply shut off after Booster System Frozen Water Coil Water supply to Booster Pump shut off Restricted Water Filter Refer to Troubleshooting Section 7 Refrigera tion System under No carbonated water at any of the dispensing valves freeze up Examine the Shut off Valve to Booster Pump and insure valve is in the on position Observe Filter Water Pressure Gauge If pres sure drops total of 40 psi 2 8 bar or more when pump cycles on Replace filter Leak on Booster System Locate water leaks on system and repair Re Pump Strainer obstructed move Pump Strainer at Brass Booster Pump flush screen with water to clean Reassemble and position in place Replace screen if neces sary Pump Coupling Key defec tive Using a flat blade screwdriver loosen Coupling Clamp and disengage Pump from Motor Exam ine Coupling Key if rounded off on either end replace Examine Pressurized Filter Water Pressure Gauge If Pump and Motor continue to operate but fail to build
55. on testing and repair of elec DANGER Use extreme care during electrical cir trical equipment should be performed only by cuit tests Live circuits may be exposed qualified service personnel The unit should be unplugged when servicing except when electri cal tests are required Section 2 Carbonated Water System continued Probable Cause Corrective Action No carbonated water at any of the dispensing valves No CO2 gas or water Malfunction of Refrigera Refer to Troubleshooting Section 7 Refrigera present at dispensing tion System tion System under No carbonated water at valves any of the dispensing valves freeze up Malfunction of Circulating Refer to Troubleshooting Section 3 Circulat ing System under No carbonated water at any of the dispensing valves CO2 gas is present at No power to carbonator Verify toggle switch for Carbonator is in the dispensing valves but no on position and Main Power Supply is on water Water supply restricted to Verify water to unit by observing Filtered Wa carbonator pump ter Pressure Gauge It should register 55 psi 3 9 kg cm To adjust loosen Locknut turn Adjustment Screw clockwise to increase coun terclockwise to decrease If regulator will not respond to adjustments replace regulator Ex amine Water Shut off Valve s to Carbonator and insure they are in the on position Water Filter restricted Place Filter By pass Valve into the F
56. oting Guide WARNING Inspection testing and repair of elec trical equipment should be performed only by qualified service personnel The unit should be unplugged when servicing except when electri cal tests are required Section 7 Refrigeration System Multiplex Company Inc Fountain Troubleshooting Guide WARNING DANGER OF ELECTRICAL SHOCK Discennect and lec kout all electrical power seurzes before performing service or maintenance on this machine except when electrical testa are being performed by qualified service persennel DANGER Use extreme care during electrical cir cuit tests Live circuits may be exposed Until repairs can be made on unit with no Ice Bank push Refrigeration and Agitator Switch to the off position and ice down Bath using ice from Ice Maker Probable Cause Corrective Action Warm drinks carbonated water temperature over 40 F 5 C Compressor operates but no ice present at water bath Compressor operates but no ice present at water bath Water Bath Feeder Valve inoperative not enough water in bath Water leak inside bath Fan or Motor inoperative air cooled units Condenser restricted Excessively warm room Lack of Refrigerant Charge Defective Expansion valve 00218012 Revision C KAK 1 November 2001 Remove tope cover from Remote Refrigeration Unit Verify if water level is considerably be low Stand Pipe If so Water Make Up v
57. ountain Troubleshooting Guide Maintenance Schedule continued Periodic maintenance for soft drink equipment listed by scheduled frequency Daily 365 times per year Take temperature of finished drinks Pour off the first and take the temperature of the second drink The proper temperature of drinks must be 40 F 4 C or less Remove nozzles and diffusers from each dispensing valve Clean with soap and warm water not hot Rinse with carbonated water and re install Flush all dispenser drains Pour hot water down drains at closing Clean general area of syrup hookup with soap and warm water Rinse off all soap Every 4 months 3 times per year Using Brix cup and syrup separator check for proper carbonated water flows standard flow 5 oz in 4 seconds fast flow 10 oz in 4 seconds and syrup to water ratios at each dispensing station Adjust as required Inspect beverage conduits for damage Re insulate and seal any uninsulated areas Inspect floor chases and seal any open chase ends Inspect air compressor filter and replace if clogged Air filter must be replaced every six months Inspect air compressor to verify cut in at 70 psi 4 8 bar and cut out at 90 psi 6 3 bar Adjust pressure switch if necessary Inspect system for air leaks Repair as required Clean the refrigeration unit air cooled condenser using a vacuum cleaner If equipped with water cooled condenser verify the water discharge temp
58. ovember 2001 Corrective Action Refer to Troubleshooting Section 9 Water Booster System under Low or No Water Pres sure at Noncarbonated Beverages Refer to this section on No carbonated water at only one dispensing valve in the dispens ing valve Readjust appropriate Flow Control If Flow Con trol does not respond to adjustment clean Flow Control Replace if necessary Carbonated Wa ter Flow rates 5 oz in 4 seconds Standard valve 10 oz in 4 seconds Fast Flow valve Refer to Troubleshooting Section 8 Syrup Sys tem under Drinks too sweet Refer to Troubleshooting Section 9 Water Booster System under Qualifier Pump and motor cycles on and off excessively Disassemble appropriate Syrup or Water Assem bly Examine valve Port for scars or nicks Re place if necessary Disassemble appropriate Syrup or Water Assem bly Examine Armature Spring and Retainer Ring If damaged replace Disassemble appropriate Syrup or Water Assem bly Examine Seat if scarred replace If for eign material is found in Assembly remove reassemble Verify wire leads from Transformer have solid connections Switch low voltage lead from Transformer supplying power to left and right hand side of Tower If Valves operate and the other three do not Transformer is defective Replace If after switching Leads the three valves still do not operate the on and off Toggle Switch is defective
59. p sup ply is dispensed Examine all exposed Syrup Lines and relieve any sharp bends or kinks Note Observe all independent lines from Syrup Tank to Filters for kinks or bends Correct as needed Low Pressure Regulator controls the pressure to diet beverages Verify pressure is set at 15 psi 1 1 kg cm To increase adjust clockwise to decrease adjust counterclockwise If regula tor does not respond repair or replace regula tor Medium Regulator controls the pressure applied to the sugar based beverages Verify pressure is set at 60 psi 4 2 kg cm To increase ad just clockwise To decrease adjust counter clockwise If regulator does not respond re pair or replace regulator Disengage Gas Quick Disconnect on suspected restricted flavor at Syrup Tank Depress Poppet valve on bottom side of Gas Disconnect If a low or poor pressure supply is apparent replace Check Relief valve Replace Syrup Tank If this solves the problem tag defective tank so bottler can make neces sary repairs It is extremely rare to have inop erative Tank Plug Valves Disengage Quick Disconnects on one Tank at a time Rinse and clean with warm water Lubri cate the O ring on the Syrup Tank Plug with water Reattach the Quick Disconnects to the appropriate Syrup Tank Plug Gas Quick Discon nects are gray or have two key slots Syrup Quick Disconnects are black or have three key slots Gas Quick Disconnects Open the Relief valve
60. pply is shut off to syrup sys tem Refer to Troubleshooting Section 8 Syrup Sys tem under No syrup Refer to Troubleshooting Section 7 Refrigera tion System under No carbonated water at dispensing valves freeze up 00218012 Revision C KAK 1 November 2001 Troubleshooting Guide WARNING Inspection testing and repair of elec trical equipment should be performed only by qualified service personnel The unit should be unplugged when servicing except when electri cal tests are required Multiplex Company Inc Fountain Troubleshooting Guide WARNING DANGER OF ELECTRICAL SHOCK Discennect and leck out all electrical power sources before performing service or maintenance on this machine except when electrical testa are being performed by qualified service persennel DANGER Use extreme care during electrical cir cuit tests Live circuits may be exposed Section 4 Compressed Air System continued Probable Cause Air Compressor oper ates excessively Corrective Action No syrup continued Leak at Shake Machine Orange Juice Dispenser or other optional equipment Leak at Compressed Air System Automatic Drain or Pet cock leaking Air leak in syrup system Restricted Germicidal Fil ter on Air Compressor Water in Air Accumulator Tank Motor Pump Assembly in operative Pressure Switch improp erly adjusted or defective Check valve defective
61. r dispensing tower to the off position If valve ceases and then continues to dispense when switch is pushed in on position Selection Panel is defective Replace 00218012 Revision C KAK 1 November 2001 Troubleshooting Guide WARNING Inspection testing and repair of elec trical equipment should be performed only by Multiplex Company Inc Fountain Troubleshooting Guide WARNING DANGER OF ELECTRICAL SHOCK Discennect and leck out all electrical power sources before performing service or maintenance on this machine except when electrical testa are being performed by qualified service persennel DANGER Use extreme care during electrical cir cuit tests Live circuits may be exposed qualified service personnel The unit should be unplugged when servicing except when electri cal tests are required Section 5 Dispensing Valve and Tower continued Probable Cause Corrective Action No water or insufficient water in finished drinks continued Foaming of finished products Unit totally inopera tive all electrical switches in the on position 00218012 Revision C KAK 1 November 2001 Remove and clean Nozzle Assemblies and reas semble Nozzles Syrup Tube Diffus ers dirty Warm drinks Refer to Troubleshooting Section 7 Refrigera tion System under Warm drinks Incorrect pressure on syrup Verify pressure supplied to sugar base products is at 60 ps
62. r taste Back Flow Preventer Valve Push Toggle Switch for carbonator to the off leaking or Double Check position Turn Water Shut off Valve to carbon Valve leaking ator to the off position Remove tope cover from Remote Refrigeration Unit Carefully dis connect water line on the outlet side of the carbonator pump If water or CO2 is observed continually escaping from line Back Flow Pre venter Double Check Valve is leaking Disas semble clean and replace if necessary Caution Carbonated water must never be al lowed to flow through materials other than plastic or stainless steel Copper zinc or gal vanized material is non acceptable Carbonated water flowing Trace carbonated water flow through system through materials other Insure no foreign materials are present Replace than plastic or stainless non acceptable material if found 12 00218012 Revision C KAK 1 November 2001 Troubleshooting Guide Multiplex Company Inc Fountain Troubleshooting Guide WARNING DANGER OF ELECTRICAL SHOCK Discennect and leck out all electrical power sources before performing service or maintenance on this machine except when electrical testa are being performed by qualified service persennel WARNING Inspection testing and repair of elec DANGER Use extreme care during electrical cir trical equipment should be performed only by cuit tests Live circuits may be exposed qualified service per
63. s sok No carbonated water at any of the dispensing valves 065 oan 9 Carbonator pump and motor will not cycle off possibly noisy pump diss 11 Section 3 Circulating SYSteMisiiecccierseagieacdecsiasnnssdecetsamce tosewadiscd nee nsnasebe ced ccteetelonlesemmciedecs 14 Warm GINS igcscccsstassasnssensansrntacdderdsnwersataaniaesaimaantnerndadedssnareesesarssnas inanniacancedanece 14 Section 4 Compressed Air System a sa ssas 16 NO SYMUD siccsciccectessmsncemiedeanticiccenseine eae eae 16 Section 5 Dispensing Valve and Tower e saas NO No syrup or insufficient syrup in finished drink ssseceeccsecrsceeeseee diss see 19 No carbonated water or insufficient carbonated water in finished drink ae oon 20 No water or insufficient water in finished rinks cc ec eeec eee eeeeeeeeeeeeeeeeeeeeeeeeeees 21 Sectiom 6 Electrical System sj scicawdasen sas sacesssaessentie riea OEE aa Erna EE EEAS 24 Section 7 Refrigeration System sceeceseececeeceecetceeees 29 Warm drinks carbonated water temperature over 40 F 5 C 29 No carbonated water at any of the dispensing valves 2T Section 8 Syr p Syster sssini isene inos 28 Section 9 Water Booster System cseeeeeee eens bee ces sss 30 Low or no water pressure at noncarbonated beverages sceeceee eee ee ences eee eeeeeeeeeeeenee 30 Section 105 Water Filter SysteMiiiscccccssestencdtescecnsndecmecesSeneniwacseeesaessasdaem
64. sonnel The unit should be unplugged when servicing except when electri cal tests are required Section 2 Carbonated Water System continued Carbonator pump and motor will not cycle off possibly noisy pump continued Carbon particles in fur Malfunction of Water Fil nished drink ter Defective Carbonator Pump Carbonator Motor Defective Circulating cycles on and off Pump in short cycles Electrode Assembly incor rectly wired or defective 00218012 Revision C KAK 1 November 2001 Refer to Troubleshooting Section 10 Water Filter System under Carbon particles in fin ished drinks Remove top cover from Refrigeration Unit Loosen Coupling Clamp with a flat blade screw driver and disengage pump from motor Turn the Coupling Key by hand in back of pump If pump shaft does not turn freely and or Carbon is found in pump carbon veins are defective Replace pump Refer to Troubleshooting Section 3 Circulat ing System under Carbon particles in finished drinks Examine wiring diagram found on Refrigeration Unit Verify Electrode wiring leads are on proper terminals of both Electrode and Liquid Level Control If problem still occurs replace elec trode 13 Multiplex Company Inc Fountain Troubleshooting Guide Troubleshooting Guide WARNING Inspection testing and repair of elec trical equipment should be performed only by qualified service personnel The uni
65. t or buzzer does sure is maintained to allow Pressure Switch to not go off cut off CO2 Warning light or buzzer Use a soap solution to located possible leaks Tighten connections carefully Primary Regulator out of Check CO2 supply The Primary Regulators must adjustment be set at 90 psi 6 3 kg cm Adjust if neces sary If regulator will not stay in adjustment replace regulator Pressure Switch inopera Carefully disconnect one wire from the CO2 tive Pressure Switch if CO2 Warning Lamps go out the CO Pressure Switch is defective and should be replaced Carefully disconnect one wire from the CO2 Pressure Switch if CO2 Warning Lamps go out the CO2 Pressure Switch is defective and should be replaced Water found in CO2 CO2 Check Valve defective Turn CO2 off at CO2 Tank valve Remove top Regulator and lines Cover from Remote Refrigeration Unit Locate CO2 Check valve on top of Carbonator Tank Remove CO line on Inlet side of Check Valve If CO is present escaping from Carbonator Tank clean out or replace Check valve 6 00218012 Revision C KAK 1 November 2001 Multiplex Company Inc Fountain Troubleshooting Guide Discennect and lec kout all electrical power seurzes before performing service or maintenance on this machine except when electrical testa are being performed by qualified service persennel Troubles hooting Guide WARNING DANGER GF ELECTRICAL SHOCK WARNING
66. t should be unplugged when servicing except when electri cal tests are required Section 3 Circulating System Probable Cause Drinks warm throughout the day warm all the time Drinks warm during pe riods of low demand much colder during pe riods of high demand Carbon Particles in fin ished drink No CO gas or water present at dispensing valve 14 WARNING DANGER OF ELECTRICAL SHOCK Disconnect and lock eut all electrical power sources before performing service or maintenance on this machine except when electrical testa are being performed by qualified service personnel DANGER Use extreme care during electrical cir cuit tests Live circuits may be exposed Corrective Action Warm drinks Malfunction of Refrigera tion System No power to Circulating Motor Motor defective Circulating Pump defec tive stainless steel Malfunction of Water Fil ter Malfunction of Carbonated Water System Circulating Pump defec tive Stainless Steel Refer to Troubleshooting Section 7 Refrigera tion System under Warm drinks carbonated water temperature over 40 F 5 C Verify Switch to Circulating Motor is in the on position and Main Power Supply is on Using a flat blade screwdriver loosen the Cou pling Clamp and disengage Pump from Motor If Motor will not operate verify voltage across Motor Terminal with voltmeter If voltage reads from 110 to 120 VAC t
67. te syrup Carb and booster pump noisy Air compressor operates excessively Loss of CO2 gas Drinks too sweet Too much syrup Too much carbonated water Too much non carbonated water Foaming Booster pump motor won t cycle off Booster pump motor won t cycle on Excessive Carbonation X Low pressure CO alarm won t cycle on Low pressure CO alarm won t cycle off Water found in primary regulator Booster pump motor won t cycle off Booster pump motor won t cycle on Product dripping from nozzle Valves will not activate Valves will not shut off Unit totally inoperative X ao g z 5 R Ea Ea ee Fl Psa appellee e A A A at tT Ppa seer sore CT TENTS TCT NSL TAL IE 28 eee X Specific problem listed in section R Problem refer to from section with X 00218012 Revision C KAK 1 November 2001 3 Multiplex Company Inc Fountain Troubleshooting Guide Discennect and lec k out all electrical power sources before performing service or maintenance on this machine except when electrical testa are being performed by qualified service persennel Troubles hooting Guide WARNING DANGER OF ELECTRICAL SHOCK WARNING Inspection testing and repair of elec DANGER Use extreme care during electrical cir trical equipment should be performed only by cuit tests Live circuits may be exposed qualified servi
68. uninsulated areas Inspect floor chases and seal any open chase ends Air compressor Monthly 12 times per year Drain condensate water from air compressor tank Every 4 months 3 times per year Inspect air compressor filter and replace if clogged Air filter must be replaced every 6 months Inspect air compressor to verify cut in at 70 psi 4 8 bar and cut out at 90 psi 6 3 bar Adjust pressure switch if necessary Inspect system for air leaks and repair as required Refrigeration unit Every 4 months 3 times per year Clean the refrigeration unit air cooled condenser using a vacuum cleaner If equipped with water cooled condenser verify the water discharge temperature is at 105 F 41 C Adjust water modulating valve if necessary Inspect water bath to verify water level is at the top of stand pipe If below add water and repair water makeup device If excessive amount of water is flowing over stand pipe locate leak within bath and repair Inspect ice bank within the water bath to verify proper size ice bank and clarity Look for uniform 2 to 4 thick ice bank Drain clean and refill water bath Inspect agitator motor and ensure proper operation Inspect the circulating motor pump assembly Clean strainer and oil motor Inspect the carbonating motor pump assembly Clean strainer and oil motor Inspect entire system for leaks and repair as required Water filters Every 4 months
69. up to 85 psi 6 0 kg cm in order to cut off pump is defective Replace Pump Pump defective Observe Pressurized Filtered Water Pressure Gauge to insure proper cycle on at 65 psi 4 6 kg cm and cycle off at 85 psi 6 0 kg cm Refer to instructions found un der Switch Cover for adjusting If Switch does not respond to adjustment replace switch Pressure Switch improp erly adjusted or defective 00218012 Revision C KAK 1 November 2001 Multiplex Company Inc Fountain Troubleshooting Guide Discennect and leck out all electrical power sources before performing service or maintenance on this machine except when electrical testa are being performed by qualified service persennel Troubles hooting Guide WARNING DANGER GF ELECTRICAL SHOCK WARNING Inspection testing and repair of elec DANGER Use extreme care during electrical cir trical equipment should be performed only by cuit tests Live circuits may be exposed qualified service personnel The unit should be unplugged when servicing except when electri cal tests are required Section 9 Water Booster System continued Probable Cause Corrective Action Low or no water pressure at noncarbonated beverages continued Pump and Motor cycles Leak on Booster System Locate water leaks on system and repair on and off exces sively Check valve defective Observe Filtered Water Pressure Gauge If pres sure rises and
70. ures for syrup circuits Caution It is required that the Carbonated Water Lines should remain connected and operational dur ing cleaning and sanitizing of the syrup circuits Sanitizing of the valve without the Carbonated Water side operation may leave bacteria in the nozzle diffuser and syrup tube Cleaning the dispensing valves 1 Disconnect each syrup container from its product line Remove product from the lines by purging with clean warm tap water until syrup has been fully purged from the product lines and valves 2 Clean all lines and fittings with cleaning solution and rinse with clean room temperature water to remove all traces of residual product Cleaning the product lines 1 To clean each valve product line attach the valve product lines to the pressure tank containing the cleaning solution Make sure each line is completely filled Pressurize the lines by pulsing the valves Pressurizing the product lines a For 15 seconds turn dispensing valve on off and then immediately on again for 15 cycles b Allow the valve to remain flowing for 3 minutes c Repeat pulsing and flowing the valves again until all cleaning solution has been used Caution Do not allow cleaning and sanitiz ing solutions to remain in syrup systems longer than recommended contact time Exceeding contact time will result in damage to valve components E1684708 Revision B 00218012 Revision C KAK 1 November 20

Fountain Troubleshooting Guide

Contents

Download Pdf Manuals

Related Search

Related Contents