Description:
The service unit provides the services, controls and instrumentation to run the miniature-scale heat exchangers as described below.The heat exchangers fit on top of the service unit and can be interchanged easily in just a few minutes.
The service unit comprises a feed tank, a product pump, instrumentation for the heat exchangers and an electrically powered hot water boiler with a recirculation pump. It is controlled by an integral programmable logic controller (PLC) with a high-resolution full-colour touchscreen panel providing the operator interface.
A novel feature is the feed pump, which has two speed ranges. A low speed range for UHT processing and a higher range for clean-in-place (CIP) or for processing at higher throughputs and lower temperatures. The flow rate is fully variable in each range. The feed pump is a hygienic progressing cavity pump controlled by a state-of-the-art frequency inverter, which compensates for any slip in the pump drive motor. Thus the flow rate of the product can be determined to an accuracy sufficient for many purposes directly from the pump speed setting. This calculated flow rate is displayed on the screen.
Features
- Touchscreen full colour control panel (high-resolution widescreen (800 x 480px))
- Graphical display of temperatures
- 32 storage memories (presets)
- Temperature data can be saved to USB datastick (as standard) – Advanced data logging and display option for saving to PC
- Calculated flow display (as standard) – Electromagnetic flow sensor option
- Hold time displayed f0r display
- Progressing cavity pump
- Compact, mobile, easy to install
- UHT throughputs up to 20 l/hr for product and 120 l/hr for CIP
- Pasteurisation throughputs up to 50 l/hr (plate heat exchanger)
- Process temperatures up to 150°C
- On-board pressurised hot water circulator
- Variable holding tube option
- Fully enclosed hoseable cabinet
- Interchangeable pressed chevron plate heat exchanger and tubular heat exchanger
- Regeneration stage (plate heat exchanger)
- Fully instrumented
- Rapid switch-over between heat exchangers
- Feed-tank level sensor
- Two-stage cooling options
- Manual preheat temperature control
