CDU (Compact Delivery Unit)

The Compact Delivery Unit (CDU) is a comprehensive delivery unit for breweries looking to deliver tank beer to bars. This unit offers the same functionality as a fixed delivery unit in a tank truck, but is designed to be placed separately on a truck and combined with transport tanks. This allows the same truck to deliver both tank beer and other beverages.

The CDU consists of a remote-controlled hose reel with hose guide, a beer dispensing pump, a high-volume low-pressure compressor, and a Siemens S7 controller with a 9-inch touchscreen. The entire unit is mounted on a transport frame with forklift profiles. The following options are available:

  • High-quality, precise flow meter (accuracy < 0.25% for deliveries > 20 liters/minute)
  • The flow meter is OIML MID certified, allowing its use for invoicing and consumption tax registration.
  • The hose is rolled up and unrolled with a hose guide, ensuring it is neatly rolled up without the operator having to guide it during rolling.
  • Solid frame that is easy to load and unload.
  • Compact design.
  • Automatic stop after entering the delivery quantity. Customer data and/or receipts can also be saved.
  • The delivery speed is adjustable in the software.

Technical Details
Dimensions (LxWxH): 2040 x 1140 x 1203 mm
Weight: ~400 kg
Top frame for additional protection: (optional)
Power connection: 230 Volt / 16 Amp
Remote control:
Beer hose: 60 Meter DN25
Beer connection: DN25 (other sizes optional)
Compressor: 1.1 kW Duotank HVLP
Pump: 1.1 kW centrifugal pump
Flow meter:
Accuracy: < 0.25% at deliveries > 20 l/min
MID certificate:
Touchscreen: 9 inch Simatic
Control: Siemens S7
Printer: (TM-T70)

Operation and Functionality

The CDU is connected via a 230-volt plug. The cable is located on a retractor that can be pulled out by hand and retracted using a spring return system. The beer hose is located on an electrically operated retractor and is unwound and wound up using a remote control. Optionally, the retractor can be torque-controlled so that it unwinds automatically when the hose is pulled. The operator then no longer needs to hold the remote control.

The CDU is controlled by a Siemens S7-1200 with a 9-inch Simatic HMI touchscreen.

  • Graphic display with intuitive operation.
  • Ability to import and export customer data.
  • Ability to configure the delivery note including beer brand and customer data.
  • Error messages with suggestions for error detection, so that the operator can independently recognize operational errors.
  • Integrated modem for service and fault diagnosis.

The control panel allows you to enter how much beer should be delivered and to which customers. The pump starts/stops pumping via a button on the remote control. The HVLP compressor starts automatically to maintain enough pressure in the (transport) tanks. Once the desired quantity is reached, the pump automatically shuts off and the valve closes.

The delivery note can be printed and stored digitally in a MID-certified memory. The layout of the document is customizable. Customer-specific data such as customer name, beer type, etc. can be added. Optionally, the delivery data can be saved in a CSV file. This file can be specifically configured, e.g. for quality control and traceability. Additionally, there is the option to connect the CDU to the cloud via an MQTT server. In this case, delivery data and, if necessary, truck location data can be sent to the cloud.

If there is air in the line, the electric butterfly valve automatically closes to prevent incorrect measurement. In the event of a power failure, the butterfly valve also closes automatically. The emergency power supply ensures that all beer flowing through the flow meter is counted until the valve is fully closed.

Contact Us

Interested in our transport solutions for tank beer? We are happy to advise you personally on all Duotank products or provide you with a non-binding offer.