High Performance Doors

The Lawrence Model PD is a truly high performance rolling door… designed for 500,000 cycles usage – and with an average
operating speed of approximately 24 inches per second to open, 12 inches per second to close. PD High Performance Doors
are ideal in very high usage or high speed applications for openings up to 20 ft. wide, 16 ft. high* (consult factory for larger sizes).
Standard Door Features
• Type 3 standard flat slats or Type 33 insulated slats* (R5) –
available in galvanized steel, stainless steel, or aluminum
• Delrin endblocks attached to slats to reduce friction
• Scratch-Guards protection system to reduce finish wear and
operating noise
• Tubular bottom bar fabricated from aluminum extrusions
• Guides fabricated from 14" steel shapes with replaceable
UHMW wearstrips
• Outer and inner guide are separately removable to provide easy
access to curtain for inspection and service
• Springless barrel design – minimum 8 58” diameter pipe and
1 12" shafts
*Doors with insulated slats are limited to 14 ft. high
Standard Safety Features
• Monitored sensing edge to stop and reverse a closing door
upon contact with an obstruction – rubber dual-chamber profile
design with integral isolated conductive elastomer switches
• Secondary monitored light curtain to stop and reverse a closing
door upon sensing an obstruction in the opening.
• If a sensing system fault is detected, door will stay in or return
to the open position and revert to constant pressure close
function for partial operability until fault is corrected
Standard Operator Features
• High efficiency UL Listed inline gear drive motor operator
• 2 HP minimum continuous duty motor operates on 208230v-3ph or 460v-3ph power source
• Auxiliary hoist for emergency hand chain operation in the event of a power failure
• Integral speed governor to prevent curtain free-fall in the event of operator component failure
• Variable speed controller with adjustable soft startstop feature
• Average operating speed of approximately 24” per second to open, 12” per second to close – slowing substantially prior to full open and
full close positions
• Solenoid actuated brake, adjustable limit switches, non-resettable counter, adjustable reclose timer, delay on reverse
• Auxiliary transformer is included to support secondary sensors and ancillary control devices
• Wall mount control panel – connected to the motor operator via pre-assembled wiring harnesses