Case study · Smart buildings / District cooling
Condition monitoring of pumps and AHUs in central plant rooms
Vibration and temperature monitoring of critical rotating equipment to move from time-based to condition-based maintenance.
01 · Challenge
The challenge
Unplanned failures of chilled-water pumps and AHU fans caused comfort complaints and emergency call-outs.
02 · Existing system
- Time-based PPM
- BMS with run status only
- No vibration data
03 · Devices & protocols
- Wireless vibration & temperature sensors
- Current sensing on motors
- Gateway with 4G backhaul
04 · Integration
- BMS via BACnet for alarms
- CMMS work orders via API
05 · Results
- Early warning of developing faults
- Maintenance scheduled by condition
- Data for asset life-cycle planning
Architecture
How it was connected
- 01
Pumps · Fans · AHUs
Critical assets
- 02
Vibration sensors
3-axis · Temp
- 03
LoRaWAN / Mesh
Plant-room coverage
- 04
Analytics
Trends & thresholds
- 05
CMMS
Condition-based orders
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