Ammonia chiller repair

Start at the room, not the nameplate. If one evaporator is iced and others are dry, the compressor may be healthy. If discharge pressure is high and the condenser is dirty or the fans are down, a “weak compressor” story is often airflow. If oil is dark or the shaft seal weeps, then the machine is in the conversation.

Industrial NH₃ chillers also lose capacity when the air purger dumps refrigerant with non-condensables, or when a capacity slide hunts. We log suction, discharge, oil pressure, and slide position before we quote a rebuild.

Leak-test and isolate first. Repair the purger and obvious packing leaks before opening a casing. Then decide: valve plates and seals in the field, a workshop overhaul, or a refurbished compressor if the housing or rotors are beyond economic repair.

Food plants and beverage rooms cannot wait for a catalogue lecture. We scope the shortest safe path: parts on the truck, alignment after the motor, and a staged load-up so product is not written off.

If the heat exchangers, vessels, and controls are sound, an overhaul or a drop-in remanufactured compressor is cheaper than a new packaged chiller. If vessels are corroded, evaporators are blocked, or the engine room no longer meets detection and ventilation practice, the job is a system repair — not only a machine rebuild.

That is why this page sits beside our overhaul and installation work. Tell us the room duty, refrigerant charge symptoms, and compressor hours. We will not sell an overhaul for a condenser problem.