BIB Syrup Handling (Storage, Changing Boxes & Pump Problems)

Bag-in-box (BIB) syrup is the concentrate side of your fountain: each box holds a bag of syrup that a pump pushes to the dispenser, where it mixes with carbonated (or plain) water at a set ratio. Handled well, BIBs are almost maintenance-free; most "machine" complaints about weak or missing flavor are actually a box, connector, or pump issue you can fix in a minute.

Storing syrup (official guidelines)

• Store between 40°F and 77°F, in a cool indoor location — never outside,

never in a refrigerated cooler, and never near a heat source, chemicals, or pesticides. Taste quality drops as storage temperature rises, and diet products are especially vulnerable to heat.

• Rotate stock first-in, first-out. Check the date code on the box and

use older boxes first.

• Store boxes at least 6 inches off the floor.
• Stacking limits: no more than 5 high for 5-gallon boxes, no more than

10 high for 2.5-gallon boxes.

• When more than one BIB feeds the same syrup line (automatic switching

valves), keep those boxes on the same level.

• If a bag is bloated, leaking, or smells off, do not connect it — set it

aside and let us know.

Reading the box date code

Each box is printed with a product code followed by a batch/date code (the larger print on the front of the box, opposite the label; "Pasteurized" is marked underneath when applicable). Reading the date code left to right:

• First 2 digits — year (e.g. 22 = 2022)
• Next 4 digits — batch number
• Next 2 digits — month of production
• Next 2 digits — day of production
• Last 3 digits — sequential box number within the batch

Example: 20 0049 01 10 299 = made in 2020, batch 0049, January 10th, box #299. Use the date code for first-in-first-out rotation.

Changing a BIB (the official way)

1. Wash your hands with soap and water.
2. Unscrew the syrup line connector and remove the empty box.
3. **Open the flap of the new box by hitting it sharply with both thumbs —

never use a knife or sharp instrument** (you can puncture the bag).

1. Pull the bag connector through the opening and remove the plastic dust

cap.

1. **Soak the line connector in a chlorine-based sanitizer solution for 1

minute (multiple connectors can soak together if they're flavor-labeled), shake it off, and reconnect to the correct** BIB — tighten until fully engaged, with the front of the connector flush.

1. Operate the dispensing valve until syrup flow is restored and any

sputtering stops.

1. Match flavor to line. After a busy change-over, mixed-up connectors are

the most common cause of "wrong flavor" complaints — trace the line if in doubt.

Step-by-step videos: connecting a new BIB (https://adilo.bigcommand.com/watch/DAWMMwPL) and disconnecting a BIB (https://adilo.bigcommand.com/watch/QNELQiDS).

Weak, watery flavor

1. The box may be nearly empty — the pour weakens as the bag runs dry.

Swap it.

1. Reseat the connector until it clicks; rinse it if crusted.
2. Look for a kinked or pinched syrup line along its whole run.
3. Listen to the syrup pump for that flavor while pouring — a healthy

pump pulses; a pump that chatters rapidly nonstop is sucking air (empty box or leaking connector), and one that never runs at all points to its gas supply or the pump itself.

1. If the flavor is still weak with a fresh box, clean connector, and a

running pump, the water/syrup ratio needs a technician's adjustment — file a service request. Ratio settings are calibrated with tools; do not adjust valve internals yourself.

No flavor at all (soda water only)

Work the same steps as weak flavor — empty box, connector, kinked line, pump. On gas-driven pump systems also check your CO₂: if the cylinder is empty the syrup pumps stop too (usually all flavors at once, which is the giveaway). One dead flavor with everything else pouring means that circuit's pump or line; all flavors dead means gas or water supply.

Syrup pump basics

Most fountain setups use small gas-driven pumps (one per flavor) mounted near the BIB rack, powered by the same CO₂ system that carbonates your water — at a much lower regulated pressure than the carbonator side (the syrup rack's pressure gauge is typically set at 45 psi; go by your system's marked setting).

• Pump runs nonstop / chatters: it is sucking air — empty box or

half-seated connector. Fix the supply and it settles. A true runaway pump can be isolated by disconnecting its CO₂ line at the pump — model-specific steps (Shurflo, Flojet N5000, Flojet G55) are in the soda machine dispensing-failures guide.

• Pump never runs: check its gas line and any small shutoff on it; if gas

is present and it stays dead, the pump needs service.

• Syrup at a pump gas fitting or a hissing pump: an internal seal has

failed — stop using that flavor and file a service request so syrup does not back into the gas lines.

• Leave pump pressure settings alone — they are set at install. If a

technician's marked setting and the gauge disagree, file a request.

Leaking syrup

1. Trace it to the source: bag fitting, connector, line, or pump.
2. A leaking bag fitting means a damaged bag — swap the box and wipe down

the rack.

1. A leaking connector — the official fix: disconnect the BIB, agitate

the connector in a bucket of clean warm water for 10–15 seconds, dry it with a clean cloth, reconnect it to the box, and make sure it is pushed all the way in so the front of the connector sits flush. If the O-ring inside is visibly worn or missing, tell us — we will replace the connector.

1. Clean up promptly with warm water — dried syrup attracts pests and glues

the next change-over shut.

When to call for service

File a service request for: a flavor still weak after box/connector/pump checks, a dead or hissing pump, ratio adjustments, worn connectors, or any leak you cannot stop by reseating a connection. Note the flavor, what you tried, and whether other flavors are affected — and remember we can log it for you.