Oil Diff. Press. Control – P28DP-9350

Protect your refrigeration compressors with our high-quality Oil Differential Pressure Switch. This essential safety device monitors the lubrication system of your machinery. It ensures that the oil pump maintains the correct pressure during operation. Without proper oil pressure, a compressor can fail within minutes. Our switch acts as a constant guardian for your industrial equipment. It helps you avoid expensive repairs and total system replacements.

How Differential Monitoring Works

This Oil Differential Pressure Switch measures the difference between two pressure points. It tracks the oil pump outlet pressure and the crankcase pressure. This “differential” is the only way to know if the oil is truly circulating. A standard pressure switch cannot provide this level of accuracy. If the oil pressure drops too low, the switch detects the change instantly. It provides a reliable safety net for any pressurized lubrication system.

Critical Time Delay Feature

Oil pressure takes a few moments to build during a cold start. Our switch includes a built-in time delay mechanism to handle this. It allows the compressor to start and reach full speed before monitoring begins. If the pressure does not reach a safe level within the set time, the switch cuts power. This prevents “nuisance tripping” during the first few seconds of operation. It ensures the machine only shuts down when a real lubrication problem exists.

Safety and Manual Reset

Safety is the most important factor in oil management. Most of our oil controls feature a manual reset button. This prevents the compressor from restarting automatically after an oil failure. A technician must inspect the oil levels and the pump first. Once they verify the system is safe, they can reset the switch manually. This process protects the motor from repeated attempts to run without oil. It is the safest way to manage high-value cooling and heating assets.