Honeywell MICRO SWITCH BX Series Installation Instructions Manual page 6

MICRO SWITCH™ BX Series
SPECIAL CONDITIONS FOR SAFE USE
Honeywell explosion-proof switches are designed specifically
for use in hazardous location applications. The BX enclosure is
sealed for protection against corrosion, water, dust and oil as
defined in IEC60529. The temperature rating for these products
depends upon the seal material used. Products using a fluoro-
silicone seal have a rating of -40 °C [-40 °F] to 70 °C [158 °F].
Products using a fluorocarbon seal have a rating of -12 °C [10 °F]
to 70 °C [158 °F]. These products meet the following Protection
Classes along with complying with Essential Health and Safety
Standards as mentioned below.
Certifica- IECEx
tion
Certificate
IECEx SIR 07.0102X
number
Ex d IIC T6 Gb
Ex tb IIIC T85°C Db
–
Protection
-12°C < Tamb < +70°C
Class
(Fluorocarbon Seal)
-40°C < Tamb < +70°C
(Fluorosilicone Seal)
IEC 60079-0:2011
IEC 60079-1:2007
Health
and Safety
Standards
IEC 60079-31:2013
The maximum construction gap (ic) is less than that required by
Table 2 of EN/IEC60079-1:2007, clause 5.2.2 as detailed below.
Flame path Max. gap
Push rod & bearing 0,076 mm
BX with conduit types 1/2-14NPT, 3/4-14NPT also meet the North
American Hazardous Locations Designation: NEMA 7 - Class I,
Groups B, C and D; NEMA 9 - Class II, Groups E, F and G and
comply with UL Standard: UL 894, CSA Standard: C22.2 No. 25-
1966, C22.2 No. 30-M1986.
The BX is ideal for outdoor use or in adverse environments where
a combination of explosion-proof plus sealing requirements are
needed. To comply with explosion proof requirements the BX
has flame paths within the housing, which cool exploding gases
below the ignition temperature before they reach explosive gases
surrounding the housing. Flame paths on the BX are (1) an ex-
tended plunger between the switch cavity and head and (2) the
cover-housing threads on the front of the switch.
6 Honeywell Sensing and Control
ATEX INMETRO
SIRA
TÜV 14.0556
00ATEX1037X
Ex d IIC T6 Gb Ex d IIC T6 Gb
Ex tb IIIC T85°C Db Ex tb IIIC T85°C Db
– IP6X
-12°C < Tamb < +70°C -12°C < Tamb < +70°C
(Fluorocarbon Seal) (Fluorocarbon Seal)
-40°C < Tamb < +70°C -40°C < Tamb < +70°C
(Fluorosilicone Seal) (Fluorosilicone Seal)
ABNT NBR
EN 60079-0:2012
IEC 60079-0:2008
ABNT NBR
EN 60079-1:2007
IEC 60079-1:2009
ABNT NBR
IEC 60079-31:2011
EN 60079-31:2009
ABNT NBR
IEC 60529:2009
Comment
Cylindrical spigot joint
MOUNT, ADJUST, WIRE
MOUNTING
Note mounting dimension drawings for hole locations (Fig. 9,
page 3). The BX is directly interchangeable with the LSX explo-
sion-proof limit switches: Adapter plate is not required.
ADJUSTING INSTRUCTIONS
To give flexibility in application, the user can perform the adjust-
ments described below in any order before wiring the unit.
ACTUATOR HEAD
The actuator head may be positioned in any of four directions.
1. Loosen the four captive head screws.
2. Place head in the desired position.
3. Securely tighten the four screws to 1,4 Nm to 1,8 Nm [12 in-
lb to 16 in-lb] (Figure 1).
REVERSING THE ROLLER LEVER
Except for the offset roller levers, the roller arm may be reversed
to face the roller to the inside or outside of the arm.
FIGURE 1.
4 × 90°
FIGURE 3.
POSITIONING LEVER
The lever on rotary actuated units is adjustable to any position
through 360° around the shaft.
1. Loosen the cap screw with 9/64-inch hexagon key wrench.
2. Move lever to desired position.
3. Securely tighten screw until teller tab can no longer be
moved by hand.
4. Tighten screw another 1/8 to 1/4 turn to assure lever is tight
on the shaft (Fig. 2).
A 9/64-inch hex key wrench is provided in the adjusting tool set
LSZ4005.
PK 80148
ISSUE 12
FIGURE 2.
360°