Nationwide Accessibility and Stairlift Solutions
DOC Development, Inc.: ADA-aligned mobility installs for homes, healthcare environments, and facilities teams.
Licensed technicians | Safety-first execution | Multi-state mobilization
Proven Experience You Can Rely On
Licensed Elevator Technician
Over 20 years of field execution
Multi-state mobilization experience
Safety-first documentation practices
Experienced technicians and licensed trades
Trusted Technical Accessibility Support
Nationwide service coverage
Licensed and experienced install teams
Safety and documentation standards applied on every project
Fast scheduling and clear communication
ADA-aligned solutions for regulated environments
We Solve Real Problems
Accessibility Services
Stairlifts
Install and service stairlift systems designed for safe, everyday mobility in residential and commercial settings.
Wheelchair Ramps
Design and build ADA-aligned ramp systems that provide durable, compliant access for entrances and transitions.
Vertical Platform Lifts
Install vertical lift solutions where ramps are not feasible due to space or elevation constraints.
DDI Accessibility Modification Program
Improve accessibility and safety in critical areas such as bathrooms, hallways, and entry points.
Site Assessments and Recommendations
Evaluate layout, access needs, and usage to recommend the most practical mobility solution.
Maintenance and Service Support
Provide ongoing service and support to keep mobility systems safe, functional, and inspection-ready.
DDI Accessibility Modification Program
Safety and Accessibility
Wheelchair Ramps
Modifying Bathrooms
DDI Install Team at Work
Our teams operate with documented safety and compliance standards suited for regulated and high-use environments. Accessibility work is completed with attention to safety, durability, and inspection readiness to provide the best possible service.
Testimonials
Frequently Asked Questions
Scheduling depends on location and scope, but most assessments are coordinated promptly after initial contact.
Yes. We support residential homes, healthcare environments, senior living, commercial buildings, and facilities teams.
We operate across multiple states and coordinate installs nationwide.
Yes. Ramp systems are designed and installed with ADA considerations and site-specific requirements in mind.
Yes. We offer ongoing support and service options depending on system type and location.
Location, property type, and a brief description of the access need are enough to begin.
Nationwide Coverage, Local Execution
• Over 20 years of field execution
• Multi-state mobilization experience
• Safety-first documentation practices
• Experienced technicians and licensed trades
Contact Us
Nationwide Accessibility Solutions
- Call Us: (678) 509-1501
- info@doc-development.com
we love them
what our clients have to say
Harmar SL600 Owner Information & Troubleshooting
Owner Information
Thank you for purchasing an SL600 Pinnacle™ Stair Lift
from Harmar. This is the most trouble-free stair lift on
the market today. It is our hope this lift will provide the
independence you want in your day-to-day life.
Date purchase_____________________________
Lift serial number__________________________
If warranty work or service is needed, your dealer will
need the data above to receive factory information or
order parts for this lift.
Troubleshooting
• If your lift does not operate, diagnose the
problem by observing the LED indicator light on
the armrest and listening to the beeps emitted:
• A green light indicates the lift is in operating
mode and may be moved in either direction.
• An amber light indicates the lift is touching an
obstruction and may be operated only in the
direction away from the obstruction.
• A flashing amber light, accompanied by an
intermittent beep for 30 seconds indicates the
lift has been stopped off the charge station. This
repeats every 5 minutes until the lift is returned
to the charge station. It is recommended that
the lift be immediately moved to a charge
station (located at either end of the rail).
• A red light indicates a problem that may
require a service call. If the light remains red
after attempting to reset the lift by turning
it “OFF” and then “ON” again, please contact
your local dealer or Harmar and describe the
problem. A local technician will need to be
contacted to repair the problem if it cannot be
repaired over the phone.
Minor faults
Single long beep (will reset once fault is cleared)
• Seat swiveled out of position
• Edge safety detected
• Under foot rest
• Current overload condition
• A Low battery voltage condition
Pulsing Beep
Lift stopped off of charge strip. Will sound after
30 seconds for 30 seconds. It will repeat every 10
minutes until lift is operated or returned to charge
strips.
Major Tones
Tones Beeps
Runaway. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
No Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Conflicting Switches Footrest UP & Footrest DOWN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Conflicting Switches Obstruction UP & Obstruction Down. . . . . . . . . . . . . . . . . . . . . . . . . 4
Conflicting Switches Footrest DOWN & Obstruction UP . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Conflicting Switches Footrest UP & Obstruction DOWN . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Conflicting Switches STOP UP & STOP DOWN switches both Detected . . . . . . . . . . . . . 7
Conflicting Switches STOP UP & STOP DOWN switches both not Detected. . . . . . . . . 8
Nationwide Service
Licensed Installers
Safety & Compliance
Fast Scheduling