Quick Answer

The LCN Senior Swing IQ is the current-generation low-energy electromechanical swing door operator from LCN. It comes in three overhead concealed models and four surface-applied variants. Before ordering any replacement part, three things must be confirmed:

• Model series: 2810IQ (single door concealed), 2850IQ (simultaneous pair concealed), 2860IQ (independent pair concealed), or 9530IQ/9540IQ/9550IQ/9560IQ (surface-applied).
• Controller and motor gearbox rule: The IQ controller (3462) and IQ motor gearbox (3454) must always be replaced together. They are not individually backward-compatible with each other or with legacy 9500/2800 hardware.
• Legacy upgrade: If upgrading from a 9500 or 2800 Senior Swing to the IQ generation, the SSIQUPGRADE kit is the correct order, not individual parts.

Security Parts stocks LCN Senior Swing IQ parts across all models with same-day shipping on stocked components. Call 845-935-0301 for pre-order compatibility support. Browse the complete catalog on the Senior Swing series page.

What the LCN Senior Swing IQ Is and Why the IQ Generation Matters for Parts

The LCN Senior Swing IQ is the current generation of LCN's heavy-duty low-energy electromechanical swing door operator. It is rated for doors up to 600 pounds and carries certifications including Grade 1 ANSI/BHMA A156.19, UL325, UL228, UL10C, ADA compliance, and CSFM listing. It meets the Buy American Act requirement, which is a common specification requirement on government and federally funded projects.

The distinction between the IQ generation and the previous 9500/2800 Senior Swing matters most when ordering parts. The two generations are not parts-compatible at the component level. The IQ controller and motor gearbox use an updated communication architecture called AdaptIQ that the previous controller and gearbox do not support. Parts look similar, but part numbers are different and the assemblies are not interchangeable.

For a full overview of the legacy 9500/2800 Senior Swing and the LCN Benchmark 9130/9140/9150 operators, including their parts and how they differ from the IQ generation, see the LCN Benchmark and Senior Swing automatic door operator parts guide.

What AdaptIQ Technology Does and Why It Matters

AdaptIQ is the self-calibrating control system built into the Senior Swing IQ controller. After installation or after a new controller is fitted, the operator runs a calibration cycle through the LCD menu. During calibration, the door opens slowly to its full open position and then closes. The controller uses this cycle to estimate the door weight, opening resistance, and physical constraints, then sets default operating parameters automatically.

This is why the IQ controller requires no seasonal adjustments for wind, carpet pressure, or HVAC stack pressure. The Smart Power Boost feature within AdaptIQ monitors the closing cycle and adds motor force when environmental resistance increases, keeping the door latching reliably across different seasonal conditions without manual adjustment. Every time a new controller is installed, this calibration must be run before the door will operate on its normal cycle.

Senior Swing IQ Model Families: Concealed vs Surface Applied

The Senior Swing IQ is available in two mounting families:

• 2800 Series (concealed overhead): 2810IQ for single doors, 2850IQ for simultaneous pairs, 2860IQ for independent pairs. The operator mounts inside a concealed header above the door opening.
• 9500 Series (surface applied): 9530IQ and 9540IQ for single doors (pull-side and push-side respectively), 9550IQ for simultaneous pairs, 9560IQ for independent pairs. The operator body is visible on the door frame face.

The controller (3462) and motor gearbox (3454) part numbers are the same across concealed and surface-applied models. Headers, arms, and mounting hardware differ between the two families.

For the broader context of how automatic door operators fit into a commercial access control specification, see the access control integration guide and the commercial door operators guide.

LCN Senior Swing IQ Parts: The Two Components That Always Replace Together

The most important ordering rule on the Senior Swing IQ is this: when the controller fails, both the controller and the motor gearbox must be replaced at the same time. When the motor gearbox fails, same rule applies. The two components communicate through a proprietary protocol and are not individually backward-compatible, either with each other or with the previous generation of hardware.

Controller: 2810IQ-3462

LCN 2810IQ-3462 controller. View product page and order.

The controller is the brain of the Senior Swing IQ system. It houses the LCD display, the 23 programmable settings, the AdaptIQ calibration system, the fire/breakaway relay interface, and the accessory power output for connected sensors and actuators. The controller outputs 48VDC to the motor gearbox and accepts 120VAC or 240VAC building power input.

The controller part number for all 2810IQ, 2850IQ, and 2860IQ overhead concealed models is 2810IQ-3462. The 2850IQ uses the same controller to drive both motor gearboxes in a simultaneous pair through a single control board.

When a controller is replaced, the fire/breakaway jumper (part number 47955791) must remain in the terminal block connector (J18) on the chassis board unless a physical breakaway switch is wired in its place. If the jumper is removed and no switch is wired in, the controller will treat the circuit as an open breakaway condition and will not operate the door.

Motor Gearbox: 2810IQ-3454

LCN 2810IQ-3454 motor gearbox. View product page and order.

The motor gearbox drives the spindle that the pivot arm connects to. It physically opens and holds the door. A motor gearbox failure typically presents as the door failing to open, opening only partway, or the controller reporting a motor encoder error on the LCD display.

The motor gearbox part number for 2810IQ, 2850IQ, and 2860IQ installations is 2810IQ-3454. For the 2850IQ simultaneous pair, two motor gearboxes are required: one per door. The companion cable (982) connects the second motor gearbox back to the single controller.

When the motor gearbox is replaced, the arm must be removed and re-installed after the new gearbox is mounted. The arm set screw must be torqued correctly to the spindle, and a full AdaptIQ calibration cycle must be run after re-installation to re-establish correct operating parameters.

LCN Senior Swing IQ Arms: Center Pivot vs Offset/Butt Arm

LCN 2810IQ-3077CP center pivot arm. View product page and order.

The Senior Swing IQ uses two distinct arm types depending on how the door is hung. Ordering the wrong arm is one of the most common parts return reasons on this product.

• Center pivot arm (3077CP): Used when the door has a center pivot at the floor and the header. The arm connects directly from the motor gearbox spindle to a slide channel in the door. This is the standard concealed-header arm for center-pivoted commercial entries. Order: 2810IQ-3077CP.
• Offset/butt arm (3077OP): Used for doors hung on standard butt hinges or offset pivots, where no floor pivot exists. This arm accommodates the geometry of a butt-hung door swinging on its hinge point rather than a center pivot. Order: 2810IQ-3077OP.

To confirm which arm a device uses, look at the bottom of the door at the threshold. A center pivot installation has a visible pivot point at the floor; a butt hinge installation has standard hinges on the door frame edge. Do not attempt to fit a center pivot arm on a butt-hung door. The geometry is incompatible and the arm will not seat correctly on the spindle or door slide.

LCN Senior Swing IQ Stops: Breakaway and Positive

Two types of door stops are available for the Senior Swing IQ. Each serves a different function and applies to different installation configurations.

Breakaway Stop

The breakaway stop is a safety device that allows a center-pivoted inswing door to break outward in an emergency, even when the operator is powered on and holding the door in the closed position. In breakaway mode, the stop releases the pivot mechanism and the door can swing outward freely. The operator is automatically disabled in breakaway mode.

The breakaway stop part number depends on the model:

• 2810IQ: 2810IQ-384B
• 2850IQ: 2850IQ-384BK
• 2860IQ: 2860IQ-384BK

The breakaway stop applies to center pivot installations only. It is not used on butt hinge or offset pivot installations.

Positive Fixed Stop

The positive fixed stop prevents an outswing door from swinging back inward past the closed position. It is the appropriate stop for outswing door configurations on center pivot installations where inward movement must be blocked. Order: 2810IQ-384F for the 2810IQ, with equivalent variants for the 2850IQ and 2860IQ.

2850IQ and 2860IQ: Double Door Configuration Parts

LCN 2850IQ-3462 controller for simultaneous pair installations. View product page and order.

The 2850IQ and 2860IQ handle double door openings, but they operate differently.

• 2850IQ (simultaneous pair): One controller drives two motor gearboxes. Both doors open and close together in a synchronized cycle. The second motor gearbox connects back to the controller via the companion cable (2850IQ-982). For the 2850IQ, two motor gearboxes plus one controller plus one companion cable is the complete drive assembly.
• 2860IQ (independent pair): Each door operates on its own cycle. Both doors share a header but can open and close independently. The wiring and control architecture differs from the 2850IQ, even though the component part numbers are identical.

A common ordering mistake on the 2850IQ is ordering only one motor gearbox for a simultaneous pair replacement. Both motor gearboxes must be replaced together, along with the controller, when a drive assembly failure occurs on the 2850IQ. The companion cable should also be inspected and replaced if there is any sign of pinching, damage, or connector wear.

LCN Senior Swing IQ Header and Structural Parts

The header is the concealed channel installed above the door opening that houses the operator components. On the Senior Swing IQ, the header comes in single-door and double-door configurations and in variants with or without the stop preparation cutout.

Key header and structural parts include:

• Header extrusion (572): The aluminum extrusion only, without end caps or assembly hardware. Ordered when the extrusion is damaged but mounting hardware is intact. Order: 2810IQ-572.
• Header assembly (3572HL): The complete single-door header assembly including all components. Order: 2810IQ-3572HL.
• Bottom pivot assembly (3107): The floor-level pivot assembly for center pivot installations. The pivot assembly carries the weight of the door at the threshold and is subject to wear on high-traffic openings. Order: 2810IQ-3107.
• Cable/parts bag (518): Includes the wiring harnesses, mounting hardware, and installation components supplied with the operator. Available as a replacement when original installation hardware is lost or damaged. Order: 2810IQ-518.

How to Upgrade from Legacy 9500 or 2800 Senior Swing to the IQ Generation

If the existing installation uses the previous-generation 9500 (surface) or 2800 (concealed) Senior Swing, the IQ controller and motor gearbox can be installed in the existing header without replacing the header itself. Both components must be replaced together.

LCN provides the SSIQUPGRADE kit specifically for this upgrade path:

• SSIQUPGRADE-SD: Upgrade kit for single door installations (2810IQ/9530IQ/9540IQ).
• SSIQUPGRADE-DD: Upgrade kit for simultaneous pair installations (2850IQ/9550IQ).

The upgrade kit includes the new IQ motor gearbox, the new IQ controller, a plastic filler plate for the control box location, and all required wiring and hardware. Legacy key/rocker switches can be connected using the legacy adapter harness (part number 48179392) included with the upgrade kit. After installation, the AdaptIQ calibration cycle must be run from the controller LCD menu before the door will operate on its standard automatic cycle.

Call 845-935-0301 before placing the upgrade order to confirm the correct kit for the specific installation and to verify header compatibility.

LCN Senior Swing IQ Parts Reference Table

Where LCN Senior Swing IQ Operators Are Specified

The Senior Swing IQ serves any opening on an accessible route where a low-energy automatic operator is required. The most common installation environments include:

• Healthcare: Patient room corridors, pharmacy entries, and outpatient clinic entrances where ADA force requirements and hands-free passage are mandatory. See the healthcare door hardware guide.
• Retail storefronts: High-traffic customer entries on aluminum storefront frames where the concealed overhead profile keeps the door entrance uncluttered. See the retail storefront door hardware guide.
• Universities and colleges: Library entries, administration building corridors, and student union entrances where accessibility is required alongside high pedestrian volume. See the university door hardware guide.
• Government and institutional buildings: Where the Buy American Act specification is required in addition to ADA compliance.

The ANSI/BHMA A156.19 standard governs the force, cycle, and obstruction reversal requirements for all low-energy operators including the Senior Swing IQ. For a full reference on ANSI/BHMA hardware standards relevant to commercial door specifications, see the ANSI/BHMA door hardware standards guide. For fire door compliance considerations when specifying automatic operators on fire-rated assemblies, see the commercial door fire rating guide.

Sourcing LCN Senior Swing IQ Parts at Security Parts

Security Parts stocks LCN Senior Swing IQ parts across the full 2810IQ, 2850IQ, and 2860IQ families, organized by model. Browse the complete parts list for each series:

• LCN 2810 model page: full parts list for single door concealed IQ installations
• LCN 2850 model page: full parts list for simultaneous pair concealed IQ installations
• LCN 2860 model page: full parts list for independent pair concealed IQ installations

For interactive parts diagrams, use the diagram pages: 2810 diagram 1 and 2850 diagram 1 provide exploded views of the full assembly with component callouts to confirm the failing part before ordering.

Same-day shipping is available on stocked components. Pre-order compatibility support is available at 845-935-0301 before the order is placed. For the full LCN automatic door operator catalog including parts for the Benchmark 9130/9140/9150 and the legacy 9500/2800 Senior Swing, see the door operators parts guide.

About the Author

This guide was written by the Security Parts team, a commercial door hardware specialist serving locksmiths, facilities managers, general contractors, and access control integrators since 2001. Security Parts stocks LCN Senior Swing IQ parts across the full 2810IQ, 2850IQ, and 2860IQ families, with same-day shipping on stocked items and pre-order compatibility support at 845-935-0301.