Electrical Connections - W.E. Anderson FLOTECT L6 Instrucciones De Instalacion Y Uso

MAXIMUM PRESSURE CHART
Model Number Float
L6EPB-B-S-3-A Cylindrical SS
L6EPB-B-S-3-B Polypropylene
L6EPB-B-S-3-C Round SS
L6EPB-B-S-3-H Round SS
L6EPB-B-S-3-O Polypropylene
L6EPB-S-S-3-A Cylindrical SS
L6EPB-S-S-3-C Round SS
L6EPB-S-S-3-L Round SS
L6EPB-S-S-3-O Polypropylene
L6EPB-S-S-3-S Polypropylene
INSTALLATION
Unpack switch and remove any packing material found inside lower housing or float
chamber.
Switch must be installed with body in a horizontal plane and arrow on side pointing
down.
If switch has an external float chamber (tee), connect it to vertical sections of 1˝ NPT
pipe installed outside vessel walls at appropriate levels. If unit has no external float
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 re-
quired. N.O. contacts will close and N.C. contacts will open when liquid level causes
float 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 mini-
mum 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.
LOCKWASHER
FRONT VIEW DETAIL
EC-Type Certificate Installation Instructions:
Cable Connection
The cable entry device shall be certified in type of explosion protection flameproof
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 certified 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.
Pressure Rating
psig (kg/cm 2 )
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)
CONDUCTOR
SCREW
CLAMP
SIDE VIEW DETAIL
WETTED MATERIALS CHART
Model Brass Bronze Ceramic
B-S-3-A X X
B-S-3-B X X X
B-S-3-C X X
B-S-3-H X X X
B-S-3-O X X
S-S-3-A X
S-S-3-C X
S-S-3-L X
S-S-3-O X
S-S-3-S X
Note: ATEX and IECEx units only: The temperature class is determined by the max-
imum ambient and or process temperature. Units are intended to be used in ambient
of -20°C≤ Tamb ≤75°C. Units may be used in process temperatures up to 105°C
providing the enclosure and switch body temperatures do not exceed 75°C. The
standard Temperature Class is T6 Process Temp ≤75°C.
Refer to Certificate No: IECEx DEK 11.0039 for conditions of safe use for IECEx
compliant units.
All wiring, conduit and enclosures must meet applicable codes for hazardous areas.
Conduits and enclosures must be properly sealed. For outdoor or other locations
where temperatures vary widely, precautions should be taken to prevent condensa-
tion inside switch or enclosure. Electrical components must be kept dry at all times.
CAUTION: To prevent ignition of hazardous atmospheres, disconnect the device
from the supply circuit before opening. Keep assembly tightly closed when in use.
MAINTENANCE
Inspect and clean wetted parts at regular intervals. The cover should be in place at
all times to protect, the internal components from dirt, dust and weather and to main-
tain hazardous location ratings. Disconnect device from the supply circuit before
opening to prevent ignition of hazardous atmosphere. Repairs to be conducted by
Dwyer Instruments, Inc. Units in need of repair should be returned to the factory pre-
paid.
Polypropylene 301SS 303SS 304SS
X X
X X
X X
X
X X
X X X
X X X
X X X
X X X
X X X