5-19. REMOVE/INSTALL OPERATING/LIMIT CONTROL SWITCHES.
This task consists of:
General Mechanics Tool Kit, (Appendix B, Section [II, Item 2)
Teflon Tape, (Appendix E, Section II, Item 157)
General Safety Instructions
Before performing any maintenance actions on electrical equipment, ensure all electrical power
has been turned off. Death or serious injury may occur from failure to do this.
Procedures for removal/installation of the high limit control switch or the operating control switch
are the same.
Remove Operating/Limit Control Switches. See Figure 5-17.
At POWER PANEL No. 2, set circuit breaker A 15CB5 to OFF.
Remove screw and cover from control switch.
Tag for reconnection and disconnect wiring and conduit from control switch.
Unscrew switch from piping.
Unscrew pressure gage from piping.
Install Operating/Limit Control Switches. See Figure 5-17.
Apply teflon tape to male fittings. Be sure to wrap tape in same direction as pipe thread.
Screw pressure gage onto piping.
Screw control switch onto piping.
Connect wiring and conduit to control switch. Remove tags.
Install cover on control switch with screw.