Assa Abloy RIXSON 91DCP

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Summary

Installation Steps

Verify Frame and Door Installation

Determine hand, verify frame squareness, check gaps, and confirm cut-out dimensions using templates.

Install Closer

Install closer in prepped frame using four 1/4-20 x 5/8" mounting screws. Ensure flush mounting.

Install Cover Plate

Attach cover plate to closer mounting plate using six 6-32 x FHPMS screws.

Attach Arm to Closer

Connect arm to closer spindle using 5/32" hex wrench and 1/4-20 x 3/4" screw.

Assemble Track

Slide track components into track, ensuring correct placement of stop block and slider.

Install Track to Door

Mount track assembly to door using specified screws, with or without optional spacer.

Attach Arm to Track

Tighten valves, position arm at 45°, and connect arm square to slider square.

Adjustments

Speed Adjustment

Use 1/8" hex wrench to adjust backcheck, sweep, and latch speed valves for door control.

Closing Force Adjustment

Adjust closing force using 3/8" hex wrench as needed, referring to the provided chart.

Optional Hold Open Adjustment

Adjust hold open function by manipulating the locking tab, set screws, and adjustment screw.

Summary

Installation Steps

Verify Frame and Door Installation

Determine hand, verify frame squareness, check gaps, and confirm cut-out dimensions using templates.

Install Closer

Install closer in prepped frame using four 1/4-20 x 5/8" mounting screws. Ensure flush mounting.

Install Cover Plate

Attach cover plate to closer mounting plate using six 6-32 x FHPMS screws.

Attach Arm to Closer

Connect arm to closer spindle using 5/32" hex wrench and 1/4-20 x 3/4" screw.

Assemble Track

Slide track components into track, ensuring correct placement of stop block and slider.

Install Track to Door

Mount track assembly to door using specified screws, with or without optional spacer.

Attach Arm to Track

Tighten valves, position arm at 45°, and connect arm square to slider square.

Adjustments

Speed Adjustment

Use 1/8" hex wrench to adjust backcheck, sweep, and latch speed valves for door control.

Closing Force Adjustment

Adjust closing force using 3/8" hex wrench as needed, referring to the provided chart.

Optional Hold Open Adjustment

Adjust hold open function by manipulating the locking tab, set screws, and adjustment screw.

The Rixson Model 91DCP is an overhead concealed closer designed for metal frame installations, available in both non-hold open and hold open configurations. This device is suitable for doors hung with 4-1/2" x 4-1/2" butt hinges or 3/4" offset pivots; for other hanging means, factory consultation is required. The closer is designed to provide controlled door closing and, optionally, to hold the door open at a desired position.

Function Description:

The 91DCP closer operates by controlling the speed at which a door closes, preventing slamming and ensuring smooth operation. It features adjustable sweep, latch, and backcheck speeds, allowing for customization based on specific door and environmental requirements. The closing force is also adjustable, enabling the closer to accommodate various door sizes, weights, and positive room pressures. The optional hold open feature allows the door to be held open at a set position, which can be disengaged by pulling the door in the closing direction. This hold open feature is not permitted for use on fire-rated doors.

Important Technical Specifications:

Door Hanging Compatibility: 4-1/2" x 4-1/2" Butt Hinge or 3/4" Offset Pivot Hung.
Mounting: Overhead concealed in metal frames.
Handing: Available in Left Hand (LH) and Right Hand (RH) configurations.
Closing Force Adjustment: Adjustable to accommodate various door sizes and weights. Factory set to minimum force.
Speed Adjustments: Independent adjustments for sweep speed, latch speed, and backcheck.
Hold Open: Optional, adjustable hold open position. Not for use on fire-rated doors.
ADA Compliance: Can be adjusted to meet ADA opening force guidelines (not to exceed 5 lbf). However, ADA compliant closers may not latch doors at lower opening force settings.
Dimensions: All dimensions are given in inches (millimeters).
Fasteners: Supplied fasteners include:
- 6x Cover Plate screws (6-32 x 1/4")
- 4x Closer Body screws (1/4-20 x 5/8")
- 1x Pinion screw (1/4-20 x 3/4")
- 1x Slider screw (1/4-20 x 3/4")
- 4x Track screws (1/4-20 x 7/16" for metal door or #14 x 1-1/4" for wood door)
Tools Required:
- #2 and #3 Hex Wrench
- 3/8", 3/16", 5/32", 1/8" Hex Wrenches (some supplied)
- Tape Measure
- Carpenter's Square
- Level

Usage Features:

Adjustable Closing Force: The closing force can be increased or decreased using a 3/8" hex wrench, allowing the closer to be optimized for different door applications. The closer is shipped at its lowest setting.
Adjustable Speed Controls: Separate valves for backcheck, sweep speed, and latch speed provide precise control over the door's movement throughout its closing cycle. These adjustments are made with a 1/8" hex wrench.
Optional Hold Open: For applications where a door needs to remain open, the optional hold open assembly allows for a user-defined hold open position. This feature is adjusted using a 3/16" hex wrench.
Removable Stop: A removable stop can be installed after the closer is fully adjusted, providing an additional layer of protection.
Handing Specific Components: Arm and cover plate components are specific to the door's handing (LH or RH) to ensure proper fit and function.

Maintenance Features:

Durable Construction: Designed for metal frame installations, suggesting robust construction suitable for commercial environments.
Troubleshooting Guide: The manual includes a troubleshooting section to address common issues such as the door not latching, the door being too difficult to open, or incorrect spring tension. This guide provides remedies such as adjusting opening force, latch speed, or ensuring proper arm preload.
Warning against Disassembly: Users are explicitly warned not to disassemble the closer body to avoid personal injury and voiding the product warranty.
Prohibition of Power Drills: Power drills are not to be used for adjustments, as this can void the warranty.
Backcheck Valve Caution: The backcheck valve should never be completely closed or used as a dead stop, and valves should not be fully opened to prevent leaks.
Reinforcement Recommendation: Door and frame reinforcement is recommended for attaching screws, particularly for hollow metal doors and frames, to ensure secure installation and longevity.
Auxiliary Stop Recommendation: A separate Rixson Surface Checkmate® or other door stop (supplied by others) is strongly recommended to prevent damage to the door closer and adjacent property.
Hinge/Pivot Recommendation: Doors should be hung on ball bearing or anti-friction hinges/pivots to ensure the door swings freely, which is crucial for proper closer operation.