We have a customer with stand alone pastry cases. The condenser is below the case and gets dirty really fast. The unit overheats, oil turns to paraffin and stops up the TXV and gets distributed throughout the system. We replace the TXV and a few months later it's stopped up again.
We have been flushing the system, replacing the TXV and and other components at a high cost to the customer.
We've decided to put a high temp shut down and alarm light to prevent the overheating.
Anyone had any experience with this or can you recommend low cost components or controls for this safety?