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Lancer Beverage Dispenser Troubleshooting

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  • #Beverage Equipment
  • #Lancer Worldwide
  • #Troubleshooting
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From convenience stores to fast food restaurants, many establishments use Lancer beverage equipment. Each of its world-class dispensers serve cool, refreshing drinks in a matter of seconds. If you experience a rare issue with your unit, our Lancer beverage dispenser troubleshooting tips will help you diagnose a problem quickly.

Below are issues and resolutions for 4400, 4500, 4600 and LCD series units, 1500/1500E Postmix and 1500 Premix series units and 2300 and 2400 series units.

Low or No Carbonation

  • Low or no CO2 – See if the machine has a full tank of CO2 gas or adjust the pressure. Adjust to 70 PSI on 4400, 4500, 4600 and LCD series units and 90 PSI on 2300 and 2400 series units.
  • Carbonator motor isn't running – Make sure the machine has full power. Check if the toggle switch is in the ON position.
  • Carbonator motor runs constantly – Have an authorized technician check and repair any blockages or issues with the motor.
  • Worn or broken carbonator pump – Have an authorized technician replace the pump.
  • Air-bound carbonator – Pull the ring the on the safety relieve valve to release gas pressure. Stop pulling the ring when water begins to spurt out.
  • Low water pressure – On 4400, 4500, 4600 and LCD series units, you might need a water booster kit.
  • Malfunctioning PCB or probe – Contact an authorized technician to replace either the probe or PCB.
  • No water flow – The backflow preventer could be stopping water flow. Have an authorized technician replace the preventer.

Leaking

  • Worn or incorrectly installed O-ring – If there is leaking by the nozzle, above the diffuser or anywhere an O-ring is present, adjust the O-ring if it's improperly installed. If the O-ring is damaged, install a new one.
  • Gaps between parts – Check for gaps by parts around the nozzles, diffusers or dispensing area. Tighten retaining screws for these surrounding components accordingly.
  • Gap between the upper and lower valve bodies – On 1500/1500E Postmix and 1500 Premix series units, check for gaps between these components. Tighten retaining screws for these surrounding components accordingly.
  • Worn paddle arm assemblies – On 1500/1500E Postmix and 1500 Premix series units, replace paddle arm assemblies if they're damaged.

Poor Water Flow

  • Poor incoming water supply pressure – Adjust water supply pressure to a minimum 75 PSI ( maximum 125 PSI) on 4400, 4500, 4600 and LCD series units and 35 PSI on 1500/1500E Postmix and 1500 Premix series units.
  • Shutoff on the mounting block isn't fully open – Open the shutoff all the way.
  • Debris is in the water flow control – Remove water flow control from the water supply valve. Clean it carefully to make sure the spool has smooth movement.
  • Bad water filtration – Contact an authorized technician to repair the water system.
  • Broken LFCV module – The LFCV module if defective, have it replaced by an authorized technician.

Poor Soda Flow

  • Poor incoming CO2 supply pressure – Adjust water supply pressure between 70 and 75 PSI on 4400, 4500, 4600 and LCD series units and between 70 and 80 PSI on 1500/1500E Postmix and 1500 Premix series units.
  • Shutoff on the mounting block isn't fully open – Open the shutoff all the way.
  • Debris is in the soda flow control – Remove soda flow control from the water supply valve. Clean it carefully to make sure the spool has smooth movement.
  • Broken LFCV module – The LFCV module if defective, have it replaced by an authorized technician.

Poor Syrup Flow

  • Poor incoming CO2 supply pressure – Adjust water supply pressure between 70 and 80 PSI on 4400, 4500, 4600 and LCD series units and 1500/1500E Postmix and 1500 Premix series units.
  • Shutoff on the mounting block isn't fully open – Open the shutoff all the way.
  • Debris is in the syrup flow control – Remove syrup flow control from the water supply valve. Clean it carefully to make sure the spool has smooth movement.
  • Broken LFCV module – On 4400, 4500, 4600 and LCD series units, the LFCV module could be defective. If so, have it replaced by an authorized technician.
  • Broken BIB pump – On 4400, 4500, 4600 and LCD series units, the BIB pumps could be defective. If so, have it replaced by an authorized technician.

Inconsistent Water-to-Syrup Ratio

  • Low incoming water flow pressure – Check and adjust the incoming water supply pressure. Minimum water flow pressure should be at 75 PSI on 4400, 4500, 4600 and LCD series units and 35 PSI on 1500/1500E Postmix and 1500 Premix series units.
  • Low incoming syrup flow pressure – Check and adjust the incoming syrup supply pressure. Minimum syrup flow pressure should be at 70 PSI on 4400, 4500, 4600 and LCD series units and 1500/1500E Postmix and 1500 Premix series units.
  • Debris in the water and/or syrup flow controls – Remove either or both control flows if there is debris. Clean them carefully to make sure the spools have smooth movement.
  • Failed CO2 regulator – On 4400, 4500, 4600 and LCD series units, have the CO2 regulator repaired or replaced by an authorized technician.

Only Dispensing Water or Syrup

  • Water or syrup shutoff on the mounting block isn't fully open – Open the shutoff all the way.
  • Incorrect or insufficient water or syrup flow – Remove appropriate valve from the mounting block and slightly open the shutoffs. Check the water and syrup supply. If there is no supply, check the dispenser for other problems and make sure the BIB connection is fully engaged.
  • Kinked line – Remove the kink from the line. If the line is damaged, replace it.
  • Low CO2 pressure to syrup pump – On 4400, 4500, 4600 and LCD series units, check the CO2 pressure and adjust so it's between 70 and 80 PSI.
  • Delayed or broken BIB pump – On 4400, 4500, 4600 and LCD series units, have an authorized technician check the CO2 pressure and replace the pump.
  • Failed CO2 regulator – On 4400, 4500, 4600 and LCD series units, have the CO2 regulator repaired or replaced by an authorized technician.
  • Broken LFCV module – On 4400, 4500, 4600 and LCD series units, the LFCV module could be defective. If so, have it replaced by an authorized technician.

Excessive Foaming

  • Incoming water or syrup temperature is too high – Correct the incoming water and syrup temperature prior to adding to the dispenser.
  • Dirty or improperly installed nozzle and diffuser – Remove these components. Adjust or clean them carefully.
  • Air in the BIB lines – Remove air by bleeding the lines.
  • High water flow rate – Readjust the water flow rate and rest the ratio. Follow instructions in the operator's manual.
  • CO2 pressure is too high – On 4400, 4500, 4600 and LCD series units, lower the CO2 pressure. Make sure the pressure doesn't go below 70 PSI.
  • No ice in the bin – If there isn't ice in the bin on 4400, 4500, 4600 and LCD series units, fill it with ice and allow the coldplate to re-stabilize.
  • Poor ice quality – On 1500/1500E Postmix and 1500 Premix series units, check the quality of the ice you're using. Replace with better ice if necessary.
  • High beverage temperature – On 1500/1500E Postmix and 1500 Premix series units, have an authorized technician check the refrigeration system.

Valve isn't Shutting Off

  • Dirty solenoid seat – On 4400, 4500, 4600 and LCD series units, if there is a dirty in the solenoid seat, activate the valve a few times to free up debris. Remove the solenoid coil and plunger, and clean out the debris thoroughly.
  • Solenoid plunger is stuck – On 4400, 4500, 4600 and LCD series units, have the solenoid coil replaced by an authorized technician.
  • Solenoid armature isn't returning to bottom position – On 1500/1500E Postmix and 1500 Premix series units, have an authorized technician to replace the broken armature or spring.
  • Cup level is stuck or binding – On 1500/1500E Postmix and 1500 Premix series units, unstick the cup level or have an authorized technician repair if it happens repeatedly.
  • Switch isn't actuating freely – On 1500/1500E Postmix and 1500 Premix series units, check the switch for free actuation.

For more assistance troubleshooting, check out our library of Lancer manuals for help.

Please contact a local authorized service agent who can help with this specific unit and all your commercial kitchen equipment needs.

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