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Wiring Instructions - Honeywell BX Series Installation Instructions Manual

Explosion-proof limit switches
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MICRO SWITCH™ BX Series
TOP ROTARY
Follow these steps to change the operating direction of the BXB
type switch:
1.
Loosen the head screws and remove head from the switch
housing.
2.
From the bottom of the head, grasp the end of the pin
plunger (Figure 7) and remove the pin. It may be necessary
to rotate the actuating shaft to expose the end of the pin
plunger.
3.
Referring to Figure 8, select the correct pin plunger posi-
tion for the desired direction of actuation.
4.
Insert the pin plunger in the position providing the desired
direction of actuation.
5.
Replace the operating head on the switch housing and
securely tighten the head screws to 1,4 Nm to 1,8 Nm [12
in-lb to 16 in-lb].
FIGURE 7.
FIGURE 9. EXPLODED VIEW OF CLAMP &
SCREW
FIGURE 8.
NOTE: Pin position above
indicates the direction of
actuation.
REPLACEMENT LEVERS
Use only non-sparking levers to retain the explosion proof
qualities.

WIRING INSTRUCTIONS

1.
Unscrew cover to expose the switching element for wiring
or replacement. To aid in cover removal, a screwdriver or
bar may be used on the wrenching lugs. Use up to size
#12 AWG solid or stranded wire to connect to the pres-
sure type connector terminals. Stripped wire ends or any
spade and ring connector that will fit the terminals may be
used. Spades may be up to 7,9 mm [0.312 in] wide, rings
up to 7,9 mm [0.312 in] diameter. With spade or ring type
connections preinsulated connectors or heat-shrinkable
tubing should be used to provide insulation between ter-
minals. Conduit size, electrical ratings and circuit diagram
are shown on the nameplate. Wire the double pole units by
connecting lead wires to the terminals nearest the conduit
opening first. An internal grounding screw is located on the
right side; an external grounding screw is located on the
upper left side. Torque all terminal screws and grounding
screws to 1 Nm to 1,8 Nm [9 in-lb to 16 in-lb]. Reassemble
cover and torque to 10 Nm [90 in-lb].
2.
Put cover locking clamp on circular cover and tighten the
flat head cross recessed screw to 1,5 Nm to 1,8 Nm [13.27
in-lb to 16 in-lb]. (See Figures 9 and 10)
3.
The internal grounding terminal must be used for the
equipment grounding connection, and the external termi-
nal is for supplementary bonding connection where local
codes or authorities permit or require such connections.
(See Figure 11)
FIGURE 10. WIRING
INSTRUCTIONS
PK 80148
ISSUE 17
FIGURE 11. WIRING
INSTRUCTIONS
1,5 Nm to 1,8 Nm
[13.27 in-lb to 16 in-lb]
tightening torque
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