7Instruction Booklet IB 33-790-1JEffective November 2010Instructions for Low Voltage PowerCircuit Breakers Types DS and DSLEaToN CorPoraTIoN www.eaton.comSection 2 - First Removal of Breaker from Compartment2.0 GENERALTo examine and become familiar with the constructionand operation of the breaker, it first must be withdrawnfrom the compartment. There are rails provided whichpermit the breaker to be rolled out of the compartment sothat it can be examined on all sides and operated. Firstunlatch and open the compartment door.2.1 SETTING THE RAILS IN FRONT OF THE COM-PARTMENTRefer to Figures 1 and 2. There are two rails for eachbreaker compartment which, when not in use, are storedon the inside of the compartment in a back-sloping posi-tion. Withdraw each rail completely and let it down into ahorizontal position, as shown in Figure 2.The first movement of the breaker toward the front of thecompartment must be done with the levering device.Fig. 1 The Type DS Low Voltage Power Circuit Breaker isShipped Inside Its Own Compartment.Fig. 2 Rails are Stowed away in the Compartment.Withdraw as Shown.2.2 REMOVING SHIPPING BRACEBefore the circuit breaker element can be withdrawn fromits compartment for the first time, two shipping bracesmust be removed from the lower part of the breaker frontpanel. These braces are small steel angles bolted to thefront of the circuit breaker and to the bottom cradle of thecircuit breaker compartment.During shipment, the front wheels of the breaker are liftedapproximately 1/16 inch above the compartment rails,and the unit is held part way between DISCONNECT andTEST positions by means of its levering device and theshipping angle.1. With a screwdriver, remove the two (2) outside .25-20panhead screws with captive washers from the bot-tom leg of the two angles. Do not discard, as laterthey will be returned to their tapped holes. Do notremove the center screw from the bottom cradle.2. The levering device is now used to release thebreaker from the shipping position. When the breakeris part way between DISCONNECT and TEST posi-tions as described above the breaker levering deviceinterlock will hold the shutter down and the trip platedepressed. The hex shaft of the levering device willbe exposed and ready to receive the levering crankhandle (see Figure 3). Insert the crank and turn in acounter-clockwise direction and observe the action of
