Units With Factory-Installed Non-Fused Disconnect - Carrier Legacy 548J07 Installation Instructions Manual

Fig. 26 — Typical 548J 07 Power Wiring Diagram (208/230v-3 Ph-60 Hz Unit Shown)
UNITS WITH FACTORY-INSTALLED NON-FUSED
DISCONNECT
The factory-installed option non-fused disconnect (NFD)
switch is located in a weatherproof enclosure located under the
main control box. The manual switch handle and shaft are
shipped in the disconnect enclosure. Assemble the shaft and
handle to the switch at this point. Discard the factory test leads
(see Fig. 23).
Connect field power supply conductors to LINE side terminals
when the switch enclosure cover is removed to attach the han-
dle.
Field-Install the NFD Shaft and Handle
1. Remove the Control Box access panel. The NFD enclo-
sure is located below the Control Box (see Fig. 27).
2. Remove (3) cap head screws that secure the NFD enclo-
sure front cover — (2) on the face of the cover and (1) on
the left side cover. See Fig. 28.
3. Remove the front cover of the NFD enclosure.
4. Make sure the NFD shipped from the factory is at OFF
position (the arrow on the black handle knob is at OFF).
5. Insert the shaft with the cross pin on the top of the shaft in
the horizontal position. See Fig. 28.
6. Measure from the tip of the shaft to the top surface of the
black pointer; the measurement should be 3.75 to 3.88 in.
(95 to 99 mm).
7. Tighten the locking screw to secure the shaft to the NFD.
8. Turn the handle to the OFF position with red arrow point-
ing at OFF.
9. Install the handle on to the painted cover horizontally with
the red arrow pointing to the left.
10. Secure the handle to the painted cover with (2) screws and
lock washers supplied.
11. Engaging the shaft into the handle socket, re-install (3) cap
head screws on the NFD enclosure.
12. Re-install the unit front panel.
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