Eaton 75VCPW-VSR Instruction Book

Contents

23Instruction Book IB02707112EAugust 201550/75VCPW-VSRBreaker To Vacuum Starter Replacement UnitEATON CORPORATION www.eaton.com7. Install 4mm x .7 screw securing diode to latch coil bracket andtighten to 9 lb-in. Do not over tighten, cracking of diode housingcould result.8. Reassemble all components removed in step 3, insuring steelshim is between coil core and coil core bracket, and secure 8mmx 1.25 bolt to latch base plate. Insure all components are correctlyaligned and the coil wires are not binding or pinched, Figure 6.15.9. Reinstall latch assembly and adjust as described in steps 3 to 8 inthe section on Installation.6.6.2 LATCH INSTALLATION1. Remove the existing roller bracket from the contactor movingarmature, if one is attached.2. Secure the new roller bracket and bearing assembly with two6mm x 25mm bolts with lock washers and torque to 85 in-lb (9.6N-m). Insure that the side flanges of the roller bracket are parallelwith the end of the armature plate. Note: If bolts longer than 25mmare used, they will extend through the armature plate and preventthe contactor from closing and sealing when the main coils areenergized.3. Locate latch assembly into contactor, see Figure 6.16.Figurt 6.12. RtmNvt oht TwN MNunoing Scrtws Stcuring ohtCNnoaco Asstmbly TN Btaring RtoaintrFigurt 6.13. Adjuso oht Gap Btowttn Plungtr and Optraoing ArmoN .110 inchtsFigurt 6.14. CNil CNrt Rtoaining BNloFigurt 6.15. Alignmtno Nf Laoch CNmpNntnosFigurt 6.16. Laoch Asstmbly Nn CNnducoNr Bast Plaot