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9
SELECTING THE CORRECT PUMP TUBING
There are two pump tube sizes available for use with this dispenser. To determine the correct tubing for you
application, first determine the dispenser flow rate you intend to use, refer to Setting Dispenser Flow Rate. Then
look up the recommended tube size for the mix ratio of your concentrate, refer to the Tube Selection Chart.
Examples:
1. For a Dispenser Flow Rate of 2.5 Oz./sec (74 mL/sec) and a Mix Ratio of 35:1 – use 3/16” I.D. Tubing.
2. For a Dispenser Flow Rate of 1.8 Oz./sec (53 mL/sec) and a Mix Ratio of 60:1 – use 1/8” I.D. Tubing.
Tube kits can be purchased from BUNN-O-MATIC.
Part # 34727.1000 for 3/16” I.D. Tubing or #34728.1000 for 1/8” I.D. Tubing.
INSTALLING THE PUMP TUBING (Refer to the Tubing Installation Instructions in side the cabinet door for
details.)
1. Loosen the thumbscrew securing the tubing retainer plate to the pump housing. Set it and the retainer plate
aside.
2. Depress the tension screw and remove it from the notch in the pump body, releasing the spring tension on
the pump band.
3. Apply lubricant (BUNN-O-MATIC part number M2531.0001) to the new pump tubing.
4. Insert the tubing onto the mix chamber port and wrap the tubing around the pump rotor, making sure that
the elbow and clamps end up on the bottom side of the pump body.
5. Close the compression band reinsert the tension screw into the notch in the pump housing.
6. Replace the tubing retainer plate and tighten the thumbscrew.
7. Reconnect bag connector to the product box.
8. Repeat steps 1 through 7 for the other pump.
9. Prime the pumps. Refer to Priming the Concentrate Lines section.
TUBE SELECTION CHART
Dispense Concentrate Ratios
Rate 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
1.8 Oz/sec. 3/16” I.D. TUBING 1/8” I.D. TUBING
(53 ml/sec.)
2.5 Oz/sec. 3/16” I.D. TUBING 1/8” I.D. TUBING
(74 ml/sec.)
34766.1 010313
Remove Retaining Plate Release Spring Tension Remove Tubing
Lubricate New Tube
Install New Tubing Completed Installation
Thumbscrew
Lubricate between arrows
2.0”
2.0”
Tension
Screw
Tube Clamp
Tension Screw