Sanidoor® [san-a-dohr] is a touch-free door opening system designed to reduce the spread of germs by eliminating contact with the door surface when entering and exiting restrooms. Protected by United States and international patents. After an initial production run of 300 units, the Sanidoor® product was brought to the Craig Technologies engineering design team by its inventor to troubleshoot the unit’s failure. Causes ranged from electrical short circuiting, motor back current, and material fatigue. http://youtu.be/v1OV2vSRkFk

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Overview:
After an initial production run of 300 units, the Sanidoor®
product was brought to the Craig Technologies engineering
design team by its inventor to troubleshoot the unit’s failure.
Causes ranged from electrical short circuiting, motor back
current, and material fatigue.
Challenges:
Craig Technologies Design
Engineering Case Study:
Sanidoor®
Sanidoor® [san-a-dohr] is a touch-free door
opening system designed to reduce the spread
of germs by eliminating contact with the door
surface when entering and exiting restrooms.
Protected by United States and international
patents.
Technical Specifications:
24 volt 4 watt motor, with electro-optical
position encoder
Rechargeable lead batteries (requires 220 volt
AC power to charge)
6-part gear train mechanism
In-system programmable controller
Passive Infrared (PIR) detection
The original Sanidoor® system was produced from a foreign
design, requiring the Craig Technologies team to translate
the design language. No specifications were provided from
the original production.
The Craig Technologies team was required to address the
lack of configuration management of several iterations in
the foreign design of Sanidoor ® to interpret the system’s
complexity and propensity to fault.
A cost analysis was conducted by the Craig Technologies
team to determine cost savings in redesign and new
production order versus retrofit of existing Sanidoor® units.
The original Sanidoor® system contained an embedded
microcontroller which required the Craig Technologies team
to integrate reconfigured electrical and mechanical
components. Only the executable code was provided.
The preprogrammed chips already soldered in the original
Sanidoor® units required the Craig Technologies team to
explore options for ISP in situ, or assembling new control
boards.
Solutions:
The Craig Technologies team designed and manufactured a
new slip clutch mechanism in-house to stop gear strip in the
Sanidoor® units.
By reprogramming the sensor to detect the door position in
relation to the clutch, the Craig Technologies team was able
to keep the Sanidoor® units in sync with patrons.
A new self-charging battery system (with integrated
generator) for Sanidoor® is being explored by the Craig
Technologies team.
Craig Technologies
321.613.5620
www.craigtechinc.com
For Engineering Services Inquiries, please email: engineer@craigtechinc.com

2. 57% of men and 46% of women do not wash
their hands after using the restroom.
-American Society of Microbiology
Sanidoor® [san-a-dohr] is a touch-free door opening system designed
to reduce the spread of germs by eliminating contact with the door
surface when entering and exiting restrooms.
View Sanidoor® on Youtube:
www.youtube.com/watch?v=v1OV
2vSRkFk
Opens doors with the simple wave of one's hand,
much like touch-free faucets and towel dispensers.
The Sanidoor® system features models to install
new or retrofit multi-user restrooms as well as
single-use locking public restrooms.
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Restaurants
Hotels
Stores
Arenas and theaters
Sports complexes
Government offices
Hospitals and clinics
Professional offices
MORE!
Sanidoor® is ADA compliant and is internationally
patented and trademarked.
Approved to meet all U.S. and Canadian standards
for automatic door openers.
The Wave of the Future: Touch-Free, Germ-Free Public Restroom Door Opening System
For Sanidoor sales inquiries, please email: sanidoor@craigtechinc.com