Access 3™ Key Systems - Corbin Russwin

Construction Master KeyingAccess 3 Key SystemsConstruction Master Keying (Lost Wafer Design)Corbin Russwin master keyed Access 3 cylinders can be ordered with the convenience of construction master keying.Construction master keying simplifies the process when the building gets turned over. With this feature, the cylinder is master keyedwith a special construction feature in one of the chambers. The plug is prepped in two places along both sides of the same chambercontaining the construction feature. This allows the construction master key to be used during the construction phases.It is highly recommended that all construction keys are collected and accounted for once the project is complete to protect the integrityof the key system.Orders to existing key systems that require additional construction master keys are to be specified and ordered separately.Orders with construction master keying will have all change keys shipped separately from hardware.Construction master keying is not available with hotel function cylinders or large format interchangeable cores. If construction keying isrequired for LFIC, specify temporary construction cores, CTAHD or CT6AHR/B/G. See page 5 for complete options.WaferCutaway cylinder showing constructionmaster key being used, putting the waferbelow the shear line while key is turned.Note the two empty “donut” holeson either side of the chamber.Change key inserted in cylinderputting the wafer at the shearline.As change key rotates, constructionwafer falls into “donut” hole inthe side of plug. Only constructionwafer will fall due to hole throughits center.Change key rotated to position forextraction.Construction master keyinserted after wafer is trapped.Driver now extends into plugchamber. Construction masterkey, if used, will not rotate.45269-8/1317