Instruction Manual

MODEL CHART
Example L6 EP -BB -D -3 -0 -CSA -B0HB L6EPB-B-D-3-0-CSA-B0HB
Series L6 Flotect
®
liquid level switch
Construction EP Explosion proof
Body BB
SS
Brass
Stainless steel
Switch Type
Process
D
S
DPDT
SPDT
Connection 3
4
1˝ NPT
1˝ BSPT, M25 x 1.5 conduit connection**
Float
Type and
Installation
0
A
B
C
H
L
S
Spherical polproplene, side wall mount*
Cylindrical 304 SS, side wall mount
Spherical Polypropylene, brass external oat chamber*
Spherical 304 SS, side wall mount
Spherical 304 SS, brass external oat chamber
Spherical 304 SS, 304 SS external oat chamber
Spherical polypropylene, 304 SS external oat chamber*
Options AT
CSA
GL
IEC
KC
MT
MV
ST
TBC
TOP
ATEX approval
CSA approval*
Ground leads*
IECEx approval
Korean certied*
High temperature*
Gold contacts
Stainless steel tag
Terminal block connector
Top mounted oat*
Bushing/
Tees and
Bushings*
B0HB
B0H4
B1HB
B1H4
TB2BS
TB2S
B0HBE
B0H4E
B1HBE
B1H4E
TB2BSE
TB2SE
1-1/2˝ NPT hex type brass bushing
1-1/2˝ NPT hex type 304 SS bushing
2˝ NPT hex type brass bushing
2˝ NPT hex type 304 SS bushing
2˝ NPT Brass 250# tee and bushing
2˝ NPT 316 SS ree and bushing
1-1/2˝ BSPT hex type brass bushing**
1-1/2˝ BSPT hex type 304 SS bushing**
2˝ BSPT hex type brass bushing**
2˝ BSPT hex type 304 SS bushing**
2˝ BSPT brass 250# tee and bushing**
2˝ BSPT 316 SS tee and bushing**
*Options that do not have ATEX, IECEx or KC.
**BSPT options not compatible with KC option.
Attention: Units without the “AT” sufx are not Directive 2014/34/EU (ATEX) compliant. These units are not intended for use in
potentially hazardous atmospheres in the EU. These units may be CE marked for other Directives of the EU.
INSTALLATION
Unpack switch and remove any packing material found inside lower housing or oat
chamber.
Switch must be installed with body in a horizontal plane and arrow on side pointing
down.
If switch has an external oat chamber (tee), connect it to vertical sections of 1˝ NPT
pipe installed outside vessel walls at appropriate levels. If unit has no external oat
chamber, it must be mounted in a 1˝ NPT half coupling welded to the vessel wall. The
coupling must extend through the wall.
Inspect and clean wetted parts at regular intervals.
ELECTRICAL CONNECTIONS
Connect wire leads in accordance with local electrical codes and switch action
required. N.O. contacts will close and N.C. contacts will open when liquid level causes
oat to rise. They will return to “normal” condition on decreasing liquid level. Black =
common, Blue = N.O. and Red = N.C.
For units supplied with both internal ground and external bonding terminals, the
ground screw inside the housing must be used to ground the control. The external
bonding screw is for supplementary bonding when allowed or required by local code.
When external bonding conductor is required, conductor must be wrapped a minimum
of 180° about the external bonding screw. See below. Some CSA listed models are
furnished with a separate green ground wire. Such units must be equipped with a
junction box, not supplied but available on special order.
EU-Type Certicate IECEX and KC Installation Instructions:
Cable Connection
The cable entry device shall be certied in type of explosion protection ameproof
enclosure “d”, suitable for conditions of use and correctly installed. For Ta ≥ 65°C
cable and cable gland rated ≥ 90°C shall be used.
Conduit Connection
An Ex d certied sealing device such as a conduit seal with setting compound shall be
provided immediately to the entrance of the valve housing. For Ta ≥ 65°C wiring and
setting compound, in the conduit seal, rated ≥ 90°C shall be used.
MAXIMUM PRESSURE CHART
Model Float
Pressure Rating psig
(kg/cm
2
)
L6EPB-B-S-3-A
L6EPB-B-S-3-B
L6EPB-B-S-3-C
L6EPB-B-S-3-H
L6EPB-B-S-3-O
L6EPB-S-S-3-A
L6EPB-S-S-3-C
L6EPB-S-S-3-L
L6EPB-S-S-3-O
L6EPB-S-S-3-S
Cylindrical SS
Polypropylene
Round SS
Round SS
Polypropylene
Cylindrical SS
Round SS
Round SS
Polypropylene
Polypropylene
200 (13.8)
250 (17.2)
350 (24.1)
250 (17.2)
1000 (69)
200 (13.8)
350 (24.1)
350 (24.1)
2000 (138)
2000 (138)
FRONT VIEW DETAIL SIDE VIEW DETAIL
CLAMP
SCREW
LOCKWASHER
CONDUCT
OR