Service Bulletin SB229
SB229 rev. A
3 of 16
Original Instructions
Procedure
Electrical Lockout/Tagout Procedures
When Working on a Machine Inside the Machine’s Main Electrical Enclosure
or in the Electrical Transmission Line to the Machine
Before opening the main electrical enclosure, or attempting to repair or replace an
electrical transmission line to the machine, lockout/tagout the machine properly. Follow
your company’s approved lockout/tagout procedures which should include, but are not
limited to, the steps here.
1. Engage an E-stop on the machine.
2. Turn the machine’s disconnect switch to the Off position as shown in Figure 1.
This is usually required to open the main electrical enclosure’s door.
Figure 1: Disconnect Switch on Main Electrical Enclosure
!
WARNING
ELECTROCUTION HAZARD!
Verify that all power to the machine has been turned
off and follow approved lockout/tagout safety
procedures before performing any maintenance.
All electrical work must performed by a qualified
electrician.
If it is absolutely necessary to troubleshoot an
energized machine, follow NFPA 70E for proper
procedures and personal protective equipment.
