The Murphy Crankcase Level Switch with Stainless Steel Float L971-C detects low oil level in a compressor’s crankcase. As oil level in the crankcase depletes, the float on the L971-C switch falls, and if reaches the predetermined limit, will trip the internal snap-switch which in turn will initiate a shutdown and/or alarm. The L971-C may also be used to detect rising fluid levels in stuffing box containment vessel.

The L971-C is designed for Ingersoll-Rand Type 30, Type 40 and ESH compressors, yet can be adapted to fit other compressors that have an inspection plate extending below normal operating oil level. The L971-C has a 1/2 NPT process connection and features an explosion-proof enclosure, durable SPDT snap-switch and 304 stainless steel float.

PRODUCT FEATURES:

• Explosion-Proof Enclosure
• Rigid Polyurethane Foam Float
• Durable Low Level Switch
• Replaces Non-Explosion-proof Switch on Ingersoll-Rand Compressors
• Adaptable to Other Compressors
• Installs with Minimal Downtime

PRODUCT SPECIFICATIONS:

• Murphy Part No.: L971-C
  
• Dimensions in inches( SEE IMAGE #2): A. 2-13/16 (71) B. 6-1/16 (154) C. 30 (762) D. 2-7/8 (73) E. 3-1/8 (79)
• Operating Temperature Range: -15 to 275°F (-26 to 135°C)
• Maximum Working Pressure: 30 psi (206 kPa) [2.06 bar]
• Switch Rating: 4 A @ 250 VAC
• Case: Aluminum (explosion-proof)
• Mounting Adaptor: Brass
• Floats: 304 stainless steel
  
• Other Wetted Parts: 303, 304, and 316 stainless steel
• O-Ring Seals: Viton and Buna
• Enclosure Rating: UL and CSA listed for Class I, Groups C & D; Class II, Groups F & G, Hazardous Locations
• Conduit Connection: 1/2 NPT
• Wire: 18 AWG (0.75 mm2)
• Shipping Weight: 1 lb. 10 oz. (0.7 kg)
• Shipping Dimensions: 8-1/4 x 4-1/4 x 4-1/2 in. (210 x 108 x 114 mm)

NOTES: Switch shown tripped on falling level (image #4)

Product Condition: NEW