Murphy L-5937B specifications Description, Application, Specifications

Float Actuated Oil Level Swichgage® instrument

L-5937B

Revised 06-06

Catalog Section 15

L100

L120

L127/L128

For Small Engines and Pumps

■See Oil Level and Condition Without Shutting Down

■Shutdown or Alarm on Low Lube Level

■Adjustable Limit Switch for Alarm and/or Shutdown

■Save on Reduced Downtime and Repair Costs

■ Simple Installation **

Description

These float actuated Oil Level Swichgage instru- ments are a combination oil level sight gage and adjustable, low and/or high limit switch. The limit switches are normally open during opera- tion–yet close if the level drops or rises to where the float contacts the limit screw. The contact completes a circuit to ground a magneto or trip a Murphy magnetic switch. The magnetic switch can be used to activate alarms and/or shutdown. Models are also available without limit switches.

Application

The level instruments described above can be used on a variety of crankcases, pump gearcases, or oil reservoirs–primarily on small engines and pumps. The following list displays the model and its typical application:

L100†: Small engines and pumps with non-vented crankcase.

L100W†: Small engines and pumps with vented crankcase.

L120†: Machined surface on crankcase such as Witte, National-Oilwell/Garland.

L127: Machined surface on crankcase, specifi- cally, Fairbanks-Morse ZC Series and Bell Engines.

L128: Machined surface on crankcase, specifical- ly, Arrow and Continental Emsco/Climax.

Specifications

■Maximum Pressure Rating (all models): 30 psi (207 kPa) [2.07 bar]

■L100 and L100W Case: Die cast aluminum Float: Brass

Rating: 2 A @ 30 VAC/DC

Vent Fitting: 1/4 in. (6 mm) tube x 1/8 NPT

Inlet Fitting: Hex Nipple 1/4 NPT

Hardware (shipped loose) L100:

•Copper Tubing: 1/4 x 48 in. dia. (6 mm x 1.2 m)

•Reducer Bushing: 1/2 NPT x 1/4 NPT

•Close Nipple: 1/2 NPT

•Tee: 1/2 NPT, black pipe

•Wire: 16 AWG x 24 in. (1.5 mm2 x 610 mm)

L100W:

•Vent Tube: 1/4 x 3-3/8in. (6 x 86 mm)

•Reducer Bushing: 3/4 NPT x 1/4 NPT

•Close Nipple: 3/4 NPT

•Tee: 3/4 NPT, black pipe

•Wire: 16 AWG x 24 in. (1.5 mm2 x 610 mm)

■L120

Case: Cast Aluminum

Float: Brass

Rating: 2 A @ 30 VAC/DC

Mounting Bolts: 1/4-20 UNC–2A (4 req'd)

■L127 and L128

Case: TROGAMID® Nylon

Float: Brass

Rating: 2 A @ 30 VAC/DC

Wire: 16 AWG x 48 in. (1.5 mm2 x 1.2 m)

Mounting Bolts:

•L127: 1/4-20 NC x 2 in. (4 required)

•L128: 3/8-16 NC x 3/4 in. (2 required)

Warranty

A limited warranty on materials and workmanship is given with this FW Murphy product. A copy of the warranty may be viewed or printed by going to www.fwmurphy.com/support/warranty.htm

†Models available with high and low options. See How to Order on reverse side.

**Products covered by this bulletin comply with EMC Council directive 89/336/EEC regarding electromagnetic compatibility except as noted.

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