Operate
Alarms & diagnostics
Critical open
1
CH-3 condenser fouling
Warnings open
3
0 acknowledged
Data quality
2
meter flatlines, ticketed
Money at risk
₹ 14.1k /day
sum of open priced findings
Work orders open
0
0 raised total
Findings — ranked by cost · acknowledged sink to the bottom
CH-3 approach temperature high — probable condenser foulingCRITICALFDD · CONFIRMED 6 d
Condenser approach 4.8 °C vs 1.5 °C commissioning baseline at similar load and wet-bulb. Estimated penalty 0.22 kW/TR ≈ ₹ 6,100/day. Recommended: condenser tube brush/descale; verify CDW strainer ΔP.
F-2607 · since 05 Jul 14:20
₹ 6,100/day
Inefficient staging — CH-3 preferred over CH-1WARNINGSEQUENCING
On 4 of the last 7 days the sequence loaded CH-3 (1.50 kW/TR measured) while CH-1 (0.90) sat available. Staging-order review recommended; measured penalty ≈ ₹ 4,800/day when active.
F-2555 · since 04 Jul 18:00
₹ 4,800/day
Low ΔT syndrome — secondary loopWARNINGFDD · RECURRING
Header ΔT 4.5 °C vs 6.0 design at part load; Zone-2 valve commands saturated ≥ 95 % open for 11 h/day. Likely coil/valve issue in Public Area AHUs. Excess pumping ≈ ₹ 2,300/day.
F-2593 · since 27 Jun 09:00
₹ 2,300/day
CT-2 approach drifting upWARNINGFDD · WATCH
Cooling tower approach 4.1 °C vs 3.2 °C 30-day median at equal wet-bulb. Possible fill scaling or nozzle blockage. Penalty flows to all running chillers ≈ ₹ 900/day.
F-2588 · since 08 Jul 06:00
₹ 900/day
EM_17 (Chiller-4 meter) reporting zeroINFODATA QUALITY
0.00 kWh for 9 days while CH-4 logged 41 run-hours. Roll-ups above this meter are flagged estimated until restored. Auto-ticket raised to O&M.
F-2571 · since 02 Jul 00:00
no direct cost
EM_14, EM_21, EM_24 flatlinedINFODATA QUALITY
MDB-3 (HVAC) and two condenser pump meters reading 0.00 kWh. Pump kWh roll-up and plant kW/TR are computed from panel kW as fallback and flagged estimated.
F-2569 · since 29 Jun 00:00
no direct cost
FDD rule catalogclick ON/OFF to toggle · audited
| ID | Rule | Trigger | Severity | State |
|---|---|---|---|---|
| R-01 | Low header ΔT | ΔT < 4.5 °C for 2 h at load > 30 % | WARN | |
| R-02 | Condenser approach high | approach > baseline + 2 °C at equal WB | CRIT | |
| R-03 | Evaporator approach high | approach > baseline + 1.5 °C | WARN | |
| R-04 | Chiller short cycling | > 3 starts / hour | CRIT | |
| R-05 | Efficiency drift | kW/TR > commissioning curve + 15 % | WARN | |
| R-06 | Pump on, no demand | pump RUN & flow < 10 % design for 30 min | WARN | |
| R-07 | CT fan on, tower isolated | fan RUN & valve CLOSED | WARN | |
| R-08 | Meter flatline | kWh unchanged 24 h & asset ran | INFO | |
| R-09 | Sensor stuck | zero variance 6 h on analog point | INFO | |
| R-10 | CHW supply off setpoint | |SP − PV| > 1 °C for 1 h | WARN | |
| R-11 | Simultaneous bypass & full demand | bypass open & valves > 90 % | WARN | |
| R-12 | Demand limit breach risk | 30-min kVA forecast > contract − 5 % | CRIT |
Alarm history — 72 hthreshold + FDD + system
Range
| When | Source | Event | State |
|---|---|---|---|
| 11 Jul 14:52 | CH-3 | High condenser approach persists | Active |
| 11 Jul 11:03 | Zone-2 | Valve saturation > 95 % (11 h cumulative) | Active |
| 11 Jul 06:40 | CH-3 | Trip — motor overload relay (auto-reset) | Cleared 06:58 |
| 10 Jul 22:15 | EM_17 | Meter flatline check failed | Ticketed |
| 10 Jul 18:04 | Plant | Evening peak demand 94 % of contract | Cleared 22:00 |
| 10 Jul 09:30 | CT-2 | Approach above 30-day median | Watching |
| 09 Jul 16:12 | PRI-3 | Bearing vibration trend up (manual entry) | Logged |
| 09 Jul 03:44 | Gateway | WAN drop 6 min — backfilled, no data loss | Cleared |
Escalation policy: critical → push + WhatsApp to on-shift immediately, phone call if unacknowledged 15 min. Warning → push + WhatsApp digest hourly. Info → morning digest. Rosters in Admin.