The Star Cool 818925A is a highly specialized refrigeration controller module designed for the precise management of container refrigeration systems. As a critical component in cold-chain logistics, this module regulates temperature, humidity, and compressor performance, ensuring perishable cargo remains within strict environmental specifications during transit. For those seeking technical resources or spare parts for marine refrigeration systems, you can find further information at the marine equipment product portal.
Product Specifications
| Feature | Specification |
| Model | 818925A |
| System Compatibility | Star Cool Container Refrigeration Units |
| Voltage | 24V DC / Control Bus Voltage |
| Dimensions | 250 mm x 180 mm x 90 mm |
| Weight | 1.1 kg |
| Origin | Denmark |
| Connectivity | Proprietary Star Cool Data Bus |
| Protection | IP66 (Enclosure sealed) |
Application Areas
The 818925A controller is primarily deployed in intermodal container refrigeration units (reefers):
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Perishable Cargo Transport: Precise temperature control for frozen and chilled goods such as fruit, pharmaceuticals, and proteins.
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Atmosphere Control: Managing integrated Controlled Atmosphere (CA) settings to extend the shelf life of fresh produce.
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Cold Chain Monitoring: Recording and transmitting temperature data for compliance and quality assurance.
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Diagnostic Management: Monitoring compressor health, refrigerant pressure, and sensor integrity to prevent cargo spoilage.
Product Usage Guide
Installation of the 818925A should be performed by authorized refrigeration technicians. Mount the controller within the protected electronics compartment of the refrigeration unit. Connect the internal communication harness and power supply, ensuring that the cable glands are tightened to maintain the unit’s IP66 environmental seal. Upon power-up, the module undergoes a self-diagnostic sequence. Use the external interface or the diagnostic port to upload the latest firmware and specific container configuration parameters. Regular verification of the sensor inputs—such as return and supply air temperatures—is recommended during every pre-trip inspection (PTI).
Frequently Asked Questions (Q&A)
What is the primary role of this controller?
It acts as the central processor for the reefer unit, automating the operation of the compressor, fans, and heaters to maintain the setpoint temperature requested by the operator.
Can this module be replaced while the container is powered?
It is strongly recommended to isolate the power supply to the reefer unit before removing or installing the controller to prevent electrical faults or data corruption.
How do I retrieve data from the module?
The module records historical data that can be extracted via the external data port using the official Star Cool diagnostic software; this is standard procedure during container arrival inspections.
What does a “Comm Fail” error mean?
This indicates that the controller is unable to talk to the other system modules (like sensors or the compressor drive). Check the wiring harnesses and communication bus connectors for corrosion or loose pins.
Is it possible to update the controller firmware?
Yes, firmware updates are crucial for system optimization and can be performed via the diagnostic interface using authorized update tools.
Recommended Similar Models
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Star Cool 818925 (Previous revision)
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Carrier Micro-Link 3 Controller
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Daikin DECOS Controller
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Thermo King MP-3000 Controller
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Emerson/Cooltech Reefer Control Module
