SST-PFB-CLX-RLL A-B  Memory Board, Dynamic

Bulletin 509 starters are designed for full voltage voltage starting of polyphase squirrel cage motors. These starters meet NEMA standards, are easy to wire and service, simple to select, and offer Class 10, 15, 20, and 30 overload protection in the complete range of NEMA sizes 00 to 9. These starters may be operated with push buttons, float switches, thermostats, pressure switches, snap switches, limit switches, or any other suitable two or three wire pilot device. All Bulletin 509 starters are available with Bulletin 592 eutectic alloy overload relays as well as Smart Motor Protectors (SMPs) - Solid-state Overloads for additional flexibility in motor protection.

When severe contact wear is evidenced, it is recommended that all contacts be replaced, which will guard against uneven contact closings. Be sure to check contact spring flexibility and replace if necessary. Order the required number of single pole contact sets from the part listings on Page 3. Follow steps 1--5 under Disassembly

The replacement overload relay for size 5 will be furnished secured to a mounting plate. Remove and discard the mounting plate. Install the replacement overload relay being sure the bus connects properly to the terminals on the stationary contact block and base assembly. Secure the overload relay to the mounting plate with the two previously removed screws with washers.

Turn the module back over and slide the load terminals out of the transformer. The current transformer spring (Item 17A) and current transformer can now be removed from the module. Note the position of the spring before removing. The replacement current transformer and spring are placed into the module so that the rectangular holes in the center of the spring and transformer are aligned and the spring is below the transformer, concave side facing up. Slide the load terminal through the transformer so that the load terminal lug is on the same side and in the same direction as the other load terminal lugs. Turn the module over and refasten the 5/16 in.-24 ¢ 1-1/4 in. screw (torque to 50 lbs.-in) and the 10-32 ¢ 3/4 in. screw (torque to 30 lbs.-in.) to the load terminal. Turn the module over (right side up) and refasten the 3/4 in. ¢ 1-9/6 in. nylon standoff to the load terminal torque to 16 lbs.-in.) 8. Refasten the wiri

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