Condensing units ↗
We design and manufacture condensing units to integrate two independent systems on a shared frame.
ICESQUARE / APPLICATIONS
Pharmaceutical refrigeration with duty and standby units
Refrigeration for vaccines and other pharmaceutical products. We design for control targets such as 4 °C ± 1 °C, with two independent duty and standby units on a shared frame.
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How it works and what we assess
The controller measures temperature and adjusts compressor speed to match cooling capacity to the actual load. When demand drops, the compressor can slow within its operating limits. This reduces starts and stops and helps limit temperature swings. The shared frame houses two units with independent refrigeration circuits and control panels. The standby unit can take over if the duty unit is offline for maintenance or a fault.
How the system works
Temperature control
The duty unit modulates cooling capacity as the room load changes, for example after a door opening.
Standby operation
The second unit has its own circuit and controls to serve the specified standby load.
Monitoring and changeover
Temperature logging, alarms and the changeover sequence are coordinated with site requirements.
Temperature control target of 4 °C ± 1 °C
This design target corresponds to a 3 to 5 °C band. It is confirmed against the product manufacturer’s storage requirements. Performance is verified by measuring temperatures at several points in the room during operation, door openings and changeover to standby.
Why these systems are used
Our recommendation
Define which load needs cooling when one unit is offline, how long it can wait for changeover and which alarms the operation requires.
Before selection
- Confirm whether standby must cover the full load or only critical services.
- Review shared site services such as the electrical supply.
- Agree on the changeover sequence and how duty and standby operation will be tested.
Equipment to assess for this application
System diagram and equipment photo
