GM4000A™ Switch Machine - Alstom

General Description1.7.12. Hand Throw ModuleThe optional hand throw module provides a manual means of switching tracks withoutelectrical power. It includes a hand throw lever used to hand throw the switch machineand a hand selector lever used to select manual or power operation.While in a hand throw mode, the switch machine can complete the stroke, lock theswitch points, and indicate normal or reverse position. The lever position is labeled andvisible from above the switch machine.The hand throw selector lever must be in the POWER position for energy to be suppliedto the motor, enabling power operation of the switch machine. Figure 1-13 shows theHAND and POWER positions of the selector lever.SELECTOR LEVERHAND THROW LEVERHANDFigure 1-13. Hand Throw Lever and Selector LeverFor switch machines configured without a hand crank, place the hand throw leverselector in the hand position to remove power from the switch machine motor duringmaintenance procedures.P2496, Rev. 6, Jul/11 1-20 Alstom Signaling Inc.