Historically, equipment was maintained one of two ways. Reactive (run-to-failure): wait for the machine to break, then scramble — emergency repairs, rushed parts, unplanned downtime. Preventive (calendar-based): service everything on a fixed schedule, which is safer but wastes money replacing good parts and still misses sudden wear.
Predictive maintenance is the better path: real-time telemetry tells you exactly when a machine is starting to fail, so you service it only when it's actually needed. Here are the four signals that make it work.
1. Pressure: spotting leaks and blockages
Pressure is the heartbeat of any fluid, hydraulic or pneumatic system. A slow, steady drop often means a developing leak, corrosion or a failing regulator. By continuously monitoring baseline pressure (in PSI or Bar), MaxLinc alerts you to a micro-leak before it becomes a burst pipe and a flooded room.
2. Differential pressure: predicting clogged filters
Differential pressure is the gap between two points — typically a filter's inlet and outlet. As a filter loads with dust, inlet pressure rises and outlet pressure falls, widening the gap and forcing fans or pumps to work harder. Dual pressure probes calculate that difference automatically, so you change filters exactly when they're loaded — not too early, not after the motor has already strained.
3. Current draw: hearing a motor "groan"
Every motorized asset — pumps, compressors, conveyors, fans — draws current to do its job, and a struggling motor draws more. Worn bearings increase friction; cavitation makes the draw swing wildly. With non-invasive current clamps (in amps), MaxLinc watches each machine's draw. If a pump pulls 15% more current than its historical baseline, you're alerted to grease the bearing or clear the obstruction before the motor burns out.
4. Trend & drift detection: the early-warning engine
Static thresholds only trip after a number crosses the danger line. Predictive maintenance lives on the rate of change. MaxLinc computes a rolling time-weighted mean of each parameter and compares it against historical windows. If current is climbing or pressure dropping faster than normal — even while still in the "safe" zone — the trend/drift alarm fires days or weeks before a hard breach. (See our guide to smart alarms for how this engine works.)
The payoff
- Eliminate downtime: schedule repairs during off-hours, not emergency shutdowns at peak.
- Extend asset life: stop a dry bearing from becoming a burned-out motor.
- Cut costs: order parts ahead instead of paying emergency courier fees, and stop replacing good components early.
Start predicting
Predictive maintenance pairs naturally with a digital twin of your facility. See it applied on our HVAC and industrial automation pages, or shop current and pressure loggers to link your first asset.