Free checklist
Motorized control damper annual maintenance checklist
The annual control damper service is the deep pass: the measurements, cleanings and tests a quarterly round doesn't reach. This checklist keeps the full service on record with the photos that make it defensible later. Work is commonly verified against IMC, manufacturer's published instructions. Confirm the edition your authority having jurisdiction has adopted.
- Items
- 5
- Photos required
- 7
- Built for
- Subcontractors
Who runs it
The controls or balancing technician on the annual air-side service, when the system can be commanded through its range off normal control.
When in the schedule
Once a year with the air-handler service, when the damper can be driven manually and the closed leakage actually assessed rather than eyeballed.
The checklist
Every item, and the photo that proves it
The photo count on each row is what RTI would require before the item can be submitted. Copy the list as is, or load it into RTI and let the gate enforce it.
Leakage and closure
- 2 photos
Closed leakage assessed at the damper
Damper commanded fully closed and leakage across it checked by feel, tell-tale or airflow at the plenum; excessive bleed traced to seals or an incomplete stroke.
- 1 photo
Blade seals and stops replaced where worn
Edge and jamb seals inspected along their length, worn sections replaced, end stops set so the blades seat fully at the closed command.
Feedback and calibration
- 2 photos
Feedback recalibrated to measured position
Actual blade angle established at open, mid and closed, and the position feedback span and zero set to match the real positions.
- 1 photo
Actuator range and current confirmed
Actuator driven across its full range under the corrected signal, running smoothly without binding, torque and travel matching the manufacturer's figures.
Mechanical service
- 1 photo
Linkage and pivots lubricated and reset
Jackshaft bearings, blade pivots and linkage pins cleaned and lubricated per the manufacturer, wear points noted, coupling retightened after service.
What usually sends this back
The failures are almost always the evidence, not the work
- Closed-position leakage never assessed, so a slowly worsening seal keeps bleeding conditioned air until the energy shows up in a complaint, not a reading.
- Feedback recalibrated to the command signal instead of to the measured blade position, so the loop trusts a number the blades don't match.
- Linkage pivots and jackshaft bearings never lubricated, so the actuator works harder each year until it can't reach full close.
Run it with the Photo Gate
A checklist nobody can submit half-finished
Load this list into RTI, stick a QR tag on the area it covers, and the submit button stays locked until every mandatory item is answered and the 7 required photos exist. Approved walks roll into a branded turnover package with a tamper-evident record behind every line.
Submission state
The gate is enforced on the server, so it holds even if the phone is offline when the walk happens.
Verified against
Common questions
- What does this motorized control damper annual checklist cover?
- 5 items across 3 sections, covering leakage and closure, feedback and calibration, mechanical service. Each item spells out what the person walking the job is actually looking for, not just a box to tick.
- Who should run this inspection?
- The controls or balancing technician on the annual air-side service, when the system can be commanded through its range off normal control.
- When in the schedule should this walk happen?
- Once a year with the air-handler service, when the damper can be driven manually and the closed leakage actually assessed rather than eyeballed.
- Why does every item ask for a photo?
- 7 of the 5 items call for photo evidence. A checklist answer without the photo is a claim; the photo is what makes the record worth something in a dispute and lets a reviewer approve work without re-walking the job.
- What most often fails a motorized control damper annual inspection?
- Closed-position leakage never assessed, so a slowly worsening seal keeps bleeding conditioned air until the energy shows up in a complaint, not a reading. Feedback recalibrated to the command signal instead of to the measured blade position, so the loop trusts a number the blades don't match. Linkage pivots and jackshaft bearings never lubricated, so the actuator works harder each year until it can't reach full close.
- Can I use this checklist in RTI?
- Yes. Start a free RTI workspace, build this list as a checklist, and the Photo Gate holds the submit button until every mandatory item is answered and its photos are attached. Approved inspections roll into a branded turnover package with a tamper-evident audit trail.
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