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MERCURY SWITCH TO MICROSWITCH RETROFIT KIT KA349WE INSTALLATION INSTRUCTIONS
MN280022EN October 2015
5. Route switch SW2 cable along frame wall and pull it
through the cable exit hole to terminal block (Figures 4
and 10). Do not attach cable leads to terminal block at
this time.
6. Use the previously removed hardware and plastic cable
retainers to secure cable to frame (Figures 10 and 16).
Figure 15. Plastic cable retainer assembly.
Completing switch SW2 assembly
Matching original orientation, reinstall parts removed.
1. Reinstall pin, spacers, and two, small lower springs
(Figure 17). (Vacuum unit without spacers shown.
Oilinterrupting units have two spacers. )
otee:
N
If no tool is available to grab springs, place a piece
of strong string through spring’s connecting loop and
pull spring into place. Once spring is connected, pull
string clear.
Figure 16. Reinstall springs and retaining pins.
2. Reinstall retaining pin, new C rings (Item 22), and small
upper spring.
3. Slide spring retaining pin through the two large springs,
spacers, and new C rings (Item 21). Tighten C rings.
4. With H bracket disengaged, gently push down on
switch SW2 until hearing a click as switch contact
encounters cam and closes (Figure 18).
Figure 17. Side view, switch SW2 assembled to
mounting plate.
5. Hold switch in place where click is heard and tighten
retaining hardware. Take care not to over tighten and
damage switch.
6. Recheck all work. Engage and disengage the H bracket
using the following directions:
A. Turn the handle shaft clockwise with a pair of pliers
to engage and latch the H bracket.
B. Turn the handle shaft counterclockwise with a pair of
pliers to disengage the H bracket.
Make sure mechanism does not encounter interference
during movement. Adjust spacers as needed to eliminate
any interference.
Gently push down for
final switch adjustment
Approximate placement of
microswitch Stop Nuts: Torque to
13-15 in-lbs after adjustment
Cable Pass Through
Mounting holes, plate to frame
Two large springs attached to spring
retaining pin
Spring retaining pin
Upper small spring,
attach here
Spacers
Pin
Handle shaft
H bracket
Lower two small springs, attach here
