5
MERCURY SWITCH TO MICROSWITCH RETROFIT KIT KA349WE INSTALLATION INSTRUCTIONS
MN280022EN October 2015
Replace handle shaft assembly
otee:
N
Orientation and assembly of handle shaft (yellow
handle, manual trip shaft) before proceeding.
1. Remove and discard cotter pin from roll pin on end of
handle shaft (Figures 8 and 11).
Figure 8. Ends of handle shaft.
2. Use a punch to drive roll pin from shaft. Discard roll pin.
3. Remove and save end washer and spring.
4. Drive roll pins from handle reset cam and handle reset
lever attached to handle shaft and discard (Figure 9).
Figure 9. Handle shaft assembly.
5. Remove C ring from handle shaft, at end where cotter
pin was removed, and discard (Figure 8).
6. Remove and save spacer washer(s).
7. Remove and discard two remaining C rings from handle
shaft, beginning with outermost C ring.
8. Slide existing handle shaft from frame, noting position
of shaft spacer (Figure 11). Discard shaft, cam, and
lever; retain spacer.
9. Switch SW2 cable runs along the side of frame and is
held in place by plastic retainers (Figure 10). Remove
and save the retainers and hardware. Discard cable.
Dispose of mercury switch following local hazardous
waste procedures.
IMPORTANT
SW2 and SW3 switches contain mercury. Dispose of these
switches in accordance with all federal, state, and locally
approved mercury disposal guidelines and regulations.
10. Scribe new handle shaft assembly (Item 3) to mark
orientation of cam and lever to shaft and shaft to frame.
Carefully remove roll pins, cam, and lever from new
shaft (Figure 9).
Figure 10. Switch SW2 cable routing.
11. Slide new shaft into frame keeping orientation the
same as found when removing the old one. Slide
shaft through frame, new cam, new lever, old spacer,
remaining old lever, new C ring (Item 19), and frame
(Figure 11).
Figure 11. Handle shaft assembly.
12. Match scribe marks between shaft and new handle
reset level. Hold new lever in alignment with shaft with
a punch inserted via the notched side of lever. Gently
drive roll pin into lever via the rounded side of the lever.
13. Match scribe marks between new handle reset cam
and shaft. Hold cam in alignment with shaft with a
punch inserted via the notched side of cam. Gently
drive roll pin into cam via the rounded side of the cam.
14. Turn shaft so the rounded sides of lever and cam are
away from the mechanism to match orientation before
replacement.
15. Tighten new C ring (Item 19) on shaft on inner edge of
frame.
16. Install new C ring (Item 19) on shaft, outside of frame,
and tighten.
17. Reinstall spacers, new C ring (Item 19), spring, end
washer, new roll pin (Item 20), and new cotter pin (Item
18) on end of handle shaft.
Handle reset cam
Handle
reset lever
C rings
Roll pins
C ring
Roll pin
Cotter pin
Spacer washers
(number may vary)
C ring
Spring
C rings
End
washer
Shaft
Spacer
Switch SW2 cable and
a cable retainer.
Existing lever, not replaced
Lever
Handle Shaft
Cam
C Ring
Spacer
