Rockwell Automation 1502 Medium Voltage Contactor, 800A (Series D and E) - Manual (Page 30)

Chapter
4
Maintenance
Tool Requirements When maintenance is performed on the vacuum contactor, one or all of the fol-
lowing tools may be required.
• 3/8" drive ratchet wrench with extension
• 3/8" drive torque wrench
• Standard 3/8" drive sockets; 7/16", 9/16", 3/4"
• Open end wrenches: 7/16", 9/16", 11/16", 3/4", 7/8"
• 3/16" Allen key
• 3/16" dia. rod
• Slot head screwdrivers; 1/8" wide, 1/4" wide
• Feeler gauge set (0.125" and 0.300")
• Digital caliper capable of depth measurement
• High potential tester
Recommended Torque Values
Part of the contactor may have to be disassembled for maintenance or replace-
ment. There are appropriate torque requirements for particular bolt sizes when
reassembling the contactor. For the following bolt sizes, use the specified torque
values listed below:
1/4” Hardware 6 ft-lb (8 N-m)
3/8” Hardware 20 ft-lb (27 N-m)
1/2” Hardware 48 ft-lb (65 N-m)
Routine Maintenance
The following should be carried out on an annual basis or whenever a contactor
is serviced:
Cleaning
• Ensure that metal chips or filings are cleaned from around the electromagnet
assembly (coil core pole face and mating armature plate) as they may affect
proper operation of the contactor. If necessary, vacuum clean.
Note: Do not use compressed air to clean or remove dirt from surfaces or
the enclosure as it will only redistribute the dirt.
• If dirty, clean the white ceramic area of vacuum bottles with a clean lint-free
cloth.
1502-UM051E-EN-P – June 2013