Gems Sensors & Controls LS-700F Operating Manual
Maintenance . . .Maintenance . . .
Maintenance . . .
Maintenance . . .Maintenance . . .
Do not disassemble unit or reposition retaining grip rings. Return unit to
Gems Sensors Division for any service required.
Warning . . .Warning . . .
Warning . . .
Warning . . .Warning . . .
The LS-700F Series switches should only be installed (in the proper tank
size) by a UL-approved facility. Failure to do so, may cause failure and
possible overfill of tank. Improper installation shall void Gems' warranty.
Consult Gems for proper cable adapter. Improper adapter use will void
warranty.
Important Points!Important Points!
Important Points!
Important Points!Important Points!
Product must be maintained and installed in strict accordance with the
National Electrical Code and GEMS product catalog and instruction bulletin.
Failure to observe this warning could result in serious injuries or damages.
An appropriate explosion-proof enclosure or intrinsically safe interface
device must be used for hazardous area applications involving such things
(but not limited to)
as
materials.
Pressure and temperature limitations shown on individual catalog pages and
drawings for the specified level switches must not be exceeded. These pressures and temperatures take into consideration possible system surge pressures/temperatures and their frequencies.
Selection of materials for compatibility with the media is critical to the life
and operation of GEMS level switches. Take care in the proper selection of
materials of construction; particularly wetted materials.
Life expectancy of switch contacts varies with applications. Contact GEMS if
life cycle testing is required.
Ambient temperature changes do affect switch set points, since the specific
gravity of a liquid can vary with temperature.
Level switches have been designed to resist shock and vibration; however,
shock and vibration should be minimized.
Liquid media containing particulate and/or debris should be filtered to ensure
proper operation of GEMS products.
Electrical entries and mounting points may require liquid/vapor sealing if
located in an enclosed tank.
Level switches must not be field repaired.
Physical damaged sustained by the product may render it unserviceable.
P/N 142224
Rev. D
ignitable mixtures, combustible dust and flammable
Installation/Mounting . . .Installation/Mounting . . .
Installation/Mounting . . .
Installation/Mounting . . .Installation/Mounting . . .
Install units vertically in tank top or bottom.
1.
Gems recommends the use of Loctite 592
(Pipe Sealant with Teflon)
tape to thread mounting plug to tank.
Do not mishandle or abuse floats.
Any dings or creases may cause improper
2.
operation.
Improper wiring of switch may cause switch
failure.
3.
Gems LS-700F (Refrigerant Recovery) level
switches are
4.
No. SA8857 and CSA-approved under FileNo. SA8857 and CSA-approved under File
No. SA8857 and CSA-approved under File
No. SA8857 and CSA-approved under FileNo. SA8857 and CSA-approved under File
LR-30200.LR-30200.
LR-30200. Please contact Gems Sensors
LR-30200.LR-30200.
Division for specific model numbers for various tank sizes.
NoteNote
Note
NoteNote
instructions may result in leakage.instructions may result in leakage.
instructions may result in leakage.
instructions may result in leakage.instructions may result in leakage.
a/ Apply pipe thread sealant to male
level switch threads.
b/ Thread level switch into female
coupling until hand-tight.
c/ Using a suitable wrench on hex
flats, tighten 1 to 2 additional turns
past hand-tightness.
Specifications . . .Specifications . . .
Specifications . . .
Specifications . . .Specifications . . .
(See Wiring Diagrams)
UL-Recognized under FileUL-Recognized under File
UL-Recognized under File
UL-Recognized under FileUL-Recognized under File
: Failure to observe the following: Failure to observe the following
: Failure to observe the following
: Failure to observe the following: Failure to observe the following
, instead of teflon
Mounting Size
Stem/Mounting Material
Mounting Attitude
Float Material
Electrical Data
Max. Overall Length (LO)
Ambient Temperature
Note:Note:
See Float Specification Table on inside. See Float Specification Table on inside.
Note:
See Float Specification Table on inside.
Note:Note:
See Float Specification Table on inside. See Float Specification Table on inside.
LS-700F SeriesLS-700F Series
LS-700F Series
LS-700F SeriesLS-700F Series
Refrigerant RecoveryRefrigerant Recovery
Refrigerant Recovery
Refrigerant RecoveryRefrigerant Recovery
Level SwitchesLevel Switches
Level Switches
Level SwitchesLevel Switches
Instruction Bulletin No. 142224Instruction Bulletin No. 142224
Instruction Bulletin No. 142224
Instruction Bulletin No. 142224Instruction Bulletin No. 142224
Reference Drawing - Type 2 UnitReference Drawing - Type 2 Unit
Reference Drawing - Type 2 Unit
Reference Drawing - Type 2 UnitReference Drawing - Type 2 Unit
PVC Jacket 80°C
3/4" NPT
L2
Actuation
Type 1Type 1
Type 1
Type 1Type 1
1/8" NPT
Stainless Steel or Teflon
Electrical Rating
(Resistive Load):
Pilot Duty Rating:
-40oF to 300oF
Level
Type 2Type 2
Type 2
Type 2Type 2
3/4" NPT 1" NPT
Brass
Vertical
20 Watt Switch
20 VA, 120-240 VAC,
12-30 VDC
48"
L1
Actuation
Level
Type 3Type 3
Type 3
Type 3Type 3
L0
FloatFloat
Float
FloatFloat
Dimensions,Dimensions,
Dimensions,
Dimensions,Dimensions,
Materials,Materials,
Materials,
Materials,Materials,
Pressures . . .Pressures . . .
Pressures . . .
Pressures . . .Pressures . . .
Float MaterialFloat Material
Float Material
Float MaterialFloat Material
Float P/NFloat P/N
Float P/N
Float P/NFloat P/N
133310 136550
1-9/64"
1-1/16"
Dia.
304 SS
1-19/32"
.90"
Dia.
304 SS
Dimensional Data . . .Dimensional Data . . .
Dimensional Data . . .
Dimensional Data . . .Dimensional Data . . .
Type 1Type 1
Type 1
Type 1Type 1
(Internal Mounting)
1/8"
NPT
1/2" HEX
Wires
LO
Type 2Type 2
Type 2
Type 2Type 2
(External Mounting)
Integral Receptacle
1-1/16"
HEX
SS Float
(Cable Optional)
3/4"
NPT
LO
Type 3Type 3
Type 3
Type 3Type 3
(External Mounting)
Integral Receptacle
(Cable Optional)
1-5/16"
HEX
SS Float
1" NPT
LO
Max. OperatingMax. Operating
Max. Operating
Max. OperatingMax. Operating
Pressure RatingPressure Rating
Pressure Rating
Pressure RatingPressure Rating
325 psi 400 psi
(*Note: No Polarity Requirements for L1 and L2)
Single Level (Group 1)Single Level (Group 1)
Single Level (Group 1)
Single Level (Group 1)Single Level (Group 1)
Cable OutputCable Output
Cable Output
Cable OutputCable Output
Black
L1: N.C. (Dry)
Dual Level (Group 1)Dual Level (Group 1)
Dual Level (Group 1)
Dual Level (Group 1)Dual Level (Group 1)
Cable OutputCable Output
Cable Output
Cable OutputCable Output
(Common Wire)(Common Wire)
(Common Wire)
(Common Wire)(Common Wire)
Black
Red or
Brown
RedBrown
Single Level (Group 1C)Single Level (Group 1C)
Single Level (Group 1C)
Single Level (Group 1C)Single Level (Group 1C)
Integral ConnectorIntegral Connector
Integral Connector
Integral ConnectorIntegral Connector
Cable
Receptacle
L1: N.C. (Dry)
L1
TT
ypical Wypical W
T
ypical W
TT
ypical Wypical W
Single Level (Group 5C)Single Level (Group 5C)
Single Level (Group 5C)
Single Level (Group 5C)Single Level (Group 5C)
Ground Integral ConnectorGround Integral Connector
Ground Integral Connector
Ground Integral ConnectorGround Integral Connector
iring Diagrams*iring Diagrams*
iring Diagrams*
iring Diagrams*iring Diagrams*
withwith
with
withwith
L1: N.C. (Dry)
Note:Note:
Note:
Note:Note:
(Green)
L1
5/16"
Dia.
Consult technical drawings for unit actuation level information. Consult technical drawings for unit actuation level information.
Consult technical drawings for unit actuation level information.
Consult technical drawings for unit actuation level information. Consult technical drawings for unit actuation level information.
Single LevelSingle Level
Single Level
Single LevelSingle Level
Ground Integral ConnectorGround Integral Connector
Ground Integral Connector
Ground Integral ConnectorGround Integral Connector
Cable
Receptacle
L1: N.C. (Dry)
L1
1
2
withwith
with
withwith
5/16"
Dia.
Dual Level (Group 6C)Dual Level (Group 6C)
Dual Level (Group 6C)
Dual Level (Group 6C)Dual Level (Group 6C)
Ground
3
L1
5/16"
Dia.
withwith
with
withwith
Ground IntegralGround Integral
Ground Integral
Ground IntegralGround Integral
ConnectorConnector
Connector
ConnectorConnector
(Green)
L2: N.C. (Dry)
L1: N.C. or N.O.
L2
L2: N.C.
L1: N.C. or N.O.
Mating Plug:Mating Plug:
Mating Plug:
Mating Plug:Mating Plug:
Brad Harrison 70000 SeriesBrad Harrison 70000 Series
Brad Harrison 70000 Series
Brad Harrison 70000 SeriesBrad Harrison 70000 Series
Ground Pin
is 1/16" Longer
Mating Plug:Mating Plug:
Mating Plug:
Mating Plug:Mating Plug:
Brad Harrison 70303 SeriesBrad Harrison 70303 Series
Brad Harrison 70303 Series
Brad Harrison 70303 SeriesBrad Harrison 70303 Series
4
Mating Plug:Mating Plug:
Mating Plug:
Mating Plug:Mating Plug:
Amp #206060-1Amp #206060-1
Amp #206060-1
Amp #206060-1Amp #206060-1
Ground
Pin is
1/16"
Longer
Mating Plug:Mating Plug:
Mating Plug:
Mating Plug:Mating Plug:
Brad Harrison 70600 SeriesBrad Harrison 70600 Series
Brad Harrison 70600 Series
Brad Harrison 70600 SeriesBrad Harrison 70600 Series
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