Refrigerant Float Switch

Parker’s LLSS Refrigerant Float Switch offers proven and reliable operation by using a mechanical switch and magnet mechanism. This reliability will reduce complexity, reduce replacement costs and offer enhanced system safety. The LLSS uses corrosion resistant components including a stainless-steel float chamber to ensure a long lifetime in the harsh environments of industrial refrigeration.

The Float Switch is used to open and close solenoid valves, to activate or de-activate electrical controls, to energize or de-energize magnetic starters for starting and stopping refrigerant liquid pumps and compressors, and as a safety device, to sound alarms and turn on lights when there is high or low liquid level. The electrical switch and operating mechanism are encapsulated within a UV resistant transparent housing. The float chamber is hermetically sealed.
 
Markets:
• Industrial Refrigeration
• Commercial Refrigeration
Features and Benefits:
• Stainless steel float chamber assembly
• UV resistant and transparent switch housing with optional protective cover
• Magnetically actuated switch (single pole double throw)
• Hermetically sealed switch
• Complete assembly weighs 3.08 kg (6.8 lbs)
• Switch assemblies are compatible with Refrigeration Specialties liquid level models LL, LLS, and LLA
• Complies with Pressure Equipment Directive (PED) 2014/68/EU
 
Application:
• Flooded Surge Drums
• Flooded Shell and Tube Chillers
• High and Low Pressure Receivers
• Inter Coolers
• Transfer Vessels
• Various Accumulators

Performance Characteristics  
Model Number
Float Switch,LLSS with Leaded Connection 2″ Differential
Electrical Connection
Leaded
Lead Length (mm)
610 mm
Lead Length (inch)
24″
Weight (lbs)
6.8 lbs
Maximum Operating Pressure (bar)
31 bar
Maximum Operating Pressure (psig)
450 psig
Minimum Liquid Temperature (C)
-75°C
Minimum Liquid Temperature (F)
-100°F
Maximum Liquid Temperature (C)
65°C
Maximum Liquid Temperature (F)
150°F
Minimum Ambient Temperature (C)
-45°C
Minimum Ambient Temperature (F)
-150°F
Maximum Ambient Temperature (C)
65°C
Maximum Ambient Temperature (F)
150°F
Specific Gravity Range
0.57 to 1.7
Power Supply
120 VAC: 10 Amps~ 240 VAC: 10 Amps~ 125 VDC: 1/2 Amps
Switch Option
Single Pole Double Throw
Tank Connection
Float Chamber Fittings: 3/4″-14 FPT or 1″BW~ Switches: 1/2″ NPT
Material
Float Chamber Assembly: 304L S.S.~ Switch Assembly: Molded UV Resistant Plastic~ Switch Cover: Aluminum
Certificates
Tank Assembly: CE0035, PED~ Leaded Switch Assembly: No Certificate~ DIN Switch Assembly: CE0035, IP65

Performance Characteristics  
Model Number
Float Switch,LLSS with Leaded Connection 2″ Differential
Electrical Connection
Leaded
Lead Length (mm)
610 mm
Lead Length (inch)
24″
Weight (lbs)
6.8 lbs
Maximum Operating Pressure (bar)
31 bar
Maximum Operating Pressure (psig)
450 psig
Minimum Liquid Temperature (C)
-75°C
Minimum Liquid Temperature (F)
-100°F
Maximum Liquid Temperature (C)
65°C
Maximum Liquid Temperature (F)
150°F
Minimum Ambient Temperature (C)
-45°C
Minimum Ambient Temperature (F)
-150°F
Maximum Ambient Temperature (C)
65°C
Maximum Ambient Temperature (F)
150°F
Specific Gravity Range
0.57 to 1.7
Power Supply
120 VAC: 10 Amps~ 240 VAC: 10 Amps~ 125 VDC: 1/2 Amps
Switch Option
Single Pole Double Throw
Tank Connection
Float Chamber Fittings: 3/4″-14 FPT or 1″BW~ Switches: 1/2″ NPT
Material
Float Chamber Assembly: 304L S.S.~ Switch Assembly: Molded UV Resistant Plastic~ Switch Cover: Aluminum
Certificates
Tank Assembly: CE0035, PED~ Leaded Switch Assembly: No Certificate~ DIN Switch Assembly: CE0035, IP65

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