3
MERCURY SWITCH TO MICROSWITCH RETROFIT KIT KA349WE INSTALLATION INSTRUCTIONS
MN280022EN October 2015
Installation
Follow the appropriate recloser maintenance manual to
remove the recloser from service. Transport it to a location
suitable for performing the work required.
IMPORTANT
Before beginning the disassembly process, ensure the
recloser is in the open position.
Refer to the recloser maintenance manual and untank the
recloser. Remove operating mechanism from head and
disconnect any auxiliary devices.
Place the recloser operating mechanism in a stable position
permitting easy access to all sides of the unit.
Reposition contact bar
Repositioning the contact bar permits greater access to the
mechanism’s switch areas. Reposition the contact bar by
removing retaining pins at points indicated in Figure 2.
1. Remove C rings from contact bar retainer pin at trip
solenoid end of mechanism and discard.
2. Note position of any washers, then remove and save
them.
3. Slide pin aside until free of contact bar and springs.
4. Repeat Steps 1-3 on the middle retaining pin.
Figure 2. Contact bar retaining rods to be removed.
After the contact arm is free of the end- and mid- retainers,
raise and secure it, so it remains out of the way for the
switch replacement process (Figure 3).
Figure 3. Repositioning contact bar.
Disconnect terminal wires
Disconnect wires at the terminal block under the rotary
solenoid.
1. Disconnect wires at terminals A, C, D, F, and N on the
lower row of terminals (Figure 4).
2. Disconnect plastic cable retainer and discard (Figure 4).
Save hardware.
Figure 4. Terminal block and lower terminal
identification.
Solenoid end
of mechanism
Contact bar
Middle retaining pin
Retaining pins
N F E D C B A
Cable exit hole
with grommet
Plastic cable retainer placement
