Maintenance & Service
Service ledger with maintenance category, what triggered each work order, cost, and downtime.
Service Events
17
6 corrective
Total Cost
$10,870.00
Downtime
1,330min
StaticDev
Corrective Share
35%
Unplanned work vs. total — lower is betterStaticDev
Work by CategoryStaticDev
| Category | Events | Cost (CAD) | Downtime (min) |
|---|---|---|---|
| Preventive | 7 | $3,295.00 | 165 |
| Predictive | 1 | $450.00 | 0 |
| Condition-based | 3 | $2,090.00 | 330 |
| Corrective | 6 | $5,035.00 | 835 |
Cost & Downtime by Asset
| Asset | Events | Corrective | Cost (CAD) | Downtime (min) |
|---|---|---|---|---|
| AHU-01 | 3 | 0 | $1,120.00 | 75 |
| AHU-02 | 4 | 3 | $1,625.00 | 325 |
| AHU-03 | 3 | 1 | $3,685.00 | 330 |
| AHU-04 | 1 | 0 | $340.00 | 0 |
| AHU-05 | 1 | 0 | $300.00 | 30 |
| BLR-01 | 1 | 1 | $980.00 | 300 |
| BLR-02 | 1 | 1 | $260.00 | 90 |
| CH-01 | 2 | 0 | $1,870.00 | 180 |
| CH-02 | 1 | 0 | $690.00 | 0 |
Service Ledger
| Triggered By | Notes | |||||||
|---|---|---|---|---|---|---|---|---|
| Jun 25, 2026, 7:00 a.m. | AHU-03 | Bearing Replacement | Corrective | F-OVERCURRENTOvercurrent trip sequence F-OVERCURRENT x3 (2026-06-24) - bearing seizure | J. Tremblay | Emergency replacement of supply fan motor bearings (DE and NDE). DE bearing showed brinelling. Vibration post-repair: 2.4 mm/s (within spec). | $2,850.00 | 240 |
| Jun 19, 2026, 8:00 a.m. | CH-01 | Condenser Cleaning | Condition-based | F-COP-LOWAnalytics: COP trending 20%+ below expected; F-COP-LOW warning and heat-wave high-pressure trip F-HP-TRIP | R. Osei | Condenser coils chemically cleaned and rinsed; approach temperature restored to design. COP back to ~5.2 at part load. | $1,150.00 | 180 |
| Jun 6, 2026, 9:00 a.m. | AHU-02 | Filter Change | Corrective | F-HIGH-STATICHigh-static trip F-HIGH-STATIC (2026-06-03); filter DP warning active since 2026-05-22 | M. Lavoie | Emergency Saturday call-out following high-static trip. Replaced primary MERV-13 filter bank. Pre-change DP 262 Pa (rated max 250 Pa). Coil inspection clean. | $245.00 | 25 |
| May 8, 2026, 3:00 p.m. | AHU-01 | Actuator Recalibration | Condition-based | Analytics: OA damper averaging ~30% open during free-cooling conditions (expected ~70%); no alarm raised | S. Whitfield | Economizer OA damper actuator recalibrated - feedback signal had drifted ~35% low, so the damper under-delivered outdoor air during economizer operation. Free-cooling stroke verified at commanded 70%. | $260.00 | 30 |
| May 5, 2026, 10:00 a.m. | AHU-03 | Vibration Analysis | Predictive | F-VIB-HIGHF-VIB-HIGH warning (2026-05-01) and rising vibration trend | J. Tremblay | Vibration spectrum analysis: outer-race defect frequencies on DE bearing. Recommended bearing replacement at next available window; interim weekly monitoring. | $450.00 | 0 |
| Apr 24, 2026, 9:00 a.m. | CH-02 | Seasonal Startup | Preventive | Scheduled spring chiller start-up (calendar) | R. Osei | Spring start-up: charge and approach temperatures within design. No leaks. | $690.00 | 0 |
| Apr 21, 2026, 9:00 a.m. | CH-01 | Seasonal Startup | Preventive | Scheduled spring chiller start-up (calendar) | R. Osei | Spring start-up: refrigerant charge verified, oil analysis clean, safeties tested. | $720.00 | 0 |
| Apr 14, 2026, 8:30 a.m. | AHU-01 | Preventive Inspection | Preventive | Scheduled quarterly PM (calendar) | M. Lavoie | Q2 preventive inspection incl. scheduled MERV-13 filter bank replacement (pre-change DP 88 Pa). Coils cleaned, condensate pan treated, sensors calibrated. | $540.00 | 45 |
| Apr 10, 2026, 9:00 a.m. | AHU-02 | Erw Seal Service | Condition-based | Condition monitoring: energy-wheel sensible effectiveness trending down 70% -> ~56% (action level 62%) | M. Lavoie | Energy-recovery wheel brush seals replaced and matrix cleaned. Post-service sensible effectiveness restored to ~70% (design). | $680.00 | 120 |
| Mar 25, 2026, 8:30 a.m. | AHU-05 | Preventive Inspection | Preventive | Scheduled quarterly PM (calendar) | J. Tremblay | Q1 preventive inspection. Belt retensioned; condensate drain flushed. | $300.00 | 30 |
| Mar 20, 2026, 8:00 a.m. | BLR-01 | Burner Service | Corrective | F-FLUE-TEMPFlue-gas temperature warning F-FLUE-TEMP (2026-03-12); combustion efficiency trending 94% -> ~86% | K. Dominguez | Heat exchanger descaled, burner tuned and combustion analyzed. Efficiency restored to ~94%; flue temperature back to design. | $980.00 | 300 |
| Mar 10, 2026, 9:00 a.m. | AHU-03 | Belt Alignment | Preventive | Scheduled annual drive service (calendar) | J. Tremblay | Drive belt replaced and sheaves re-aligned. Noted elevated broadband vibration on DE bearing (3.4 mm/s); recommended vibration analysis at next PM. | $385.00 | 90 |
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