Postmix Fault Finding Guide | BIB Dispensing Troubleshooting

Postmix Fault Finding & Troubleshooting Guide

Experiencing issues with your postmix dispensing system? Use our self-help troubleshooting guide below to identify common faults with bag-in-box (BIB) soft drinks systems, postmix syrup dispensers and bar gun setups.

This Section Covers

Flat drinks Warm Drinks Weak Drinks Strong Drinks No Syrup Dispensing No Soda Water Dispensing Gas Leak Off Taste

Flat Drinks

Possible Causes & Solution

CO2 valve closed - Open the CO2 cylinder valve
Low CO2 pressure - Replace the CO2 cylinder if empty
Empty CO2 cylinder - Replace the CO2 cylinder
Warm Drinks - Click Here

Note - If the Co2 cylinder has run empty or low, once replaced, you will need to pour off a couple of jugs of soda water into a jug to return the carbonation to your soda water

Warm Drinks

Possible Causes & Solution

Postmix cooler switched off - Switch back on at plug socket
Soda pump switched off - Switch back on at cooler
Blocked condenser grill - Remove obstruciton/ Brush grill with a stiff brush

Note - If any of the above applied you will need to wait a couple of hours before you drinks are fully down to temperature.

Weak Drinks

Possible Causes & Solution

CO2 valve closed - Open the CO2 cylinder valve
Low CO2 pressure - Replace the CO2 cylinder if empty
Empty CO2 cylinder - Replace the CO2 cylinder
Empty BIB - Replace the bag in box
BIB connector not fully secured - Tighten connector until fully secured
BIB out of date - Replace out of date box

Note - If your syrups have an automatic changeover fitted, ensure both boxes are full & the connectors are fully secured.

Strong Drinks

Possible Causes & Solution

Warm Drinks - Refer to warm drinks section
No Dispense of soda water - Refer to no dispense of soda water section
BIB on wrong product line - Restore box to correct product line

Note - If your BIB was on the wrong line, you will need to press down on the product into a jug at the bar until the new syrup comes through

No Syrup Dispensing

Possible Causes & Solution

CO2 valve closed - Open the CO2 cylinder valve
Low CO2 pressure - Replace the CO2 cylinder if empty
Empty CO2 cylinder - Replace the CO2 cylinder
Empty BIB - Replace the bag in box
BIB connector not fully secured - Tighten connector until fully secured

Note - If your syrups have an automatic changeover fitted, ensure both boxes are full & the connectors are fully secured.

No Soda Water Dispensing

Possible causes & Solution

CO2 valve closed - Open the CO2 cylinder valve
Low CO2 pressure - Replace the CO2 cylinder if empty
Empty CO2 cylinder - Replace the CO2 cylinder
Water supply switched off - Check stop tap is open
Carbonator timed out - Switch carbonator off at the wall, wait 30 seconds, then plug the unit back in. Once unit has reset, return to the bar & hold down on the soda water until the flow is restored.

Note - If your water supply had been switched off, please follow the same steps for - Carbonator timed out.

Off Taste

Possible causes & Solution

Dirty Nozzle - Remove nozzle from the dispenser and wash in clean warm water
BIB out of date - Replace out of date box

Note - If your BIB was out of date, you will need to press down on the product into a jug at the serving area until the new syrup comes through

Gas Leak

Possible causes & Solution

Clicking syrup pump - Ensure you do not have any empty boxes connected & the BIB connectors are fully secure
Hissing/ Freezing Gas cylinder - Ensure you Co2 gas cylinder has an intact washer fitted under the securing nut & the nut is fully secured to the bottle

Warning - If your Co2 cylinder if freezing, do not touch the gas cylinder directly with your hands.