The Muirhead® Docking Ladder Controller (Part No. 9037) has been designed to provide electrical operation of a machine’s docking type boarding ladder (often found on dozers). The unit will allow the ladder to be lowered when the machine is stationary with the park brake applied. It features automatic operation of ‘the ladder raise control’ if the ladder is down and the operator releases the park brake. The Docking Ladder Controller has maximum time cycles for both raise and lower functions that will stop excessive run times damaging components or draining batteries. The ladder time cycle will start by the operation of the spring return toggle switch that allows the operator to control a raise or lower function as required. The Docking Ladder Controller also incorporates an internal sonar unit which alerts the operator when a raise or lower time cycle is complete or if a condition is not met and a fault has occurred. An output is provided for an external ladder access lamp this will become active for 45 seconds whenever the ladder raise/lower switch on the controller is activated.
