Description
The Murphy LM2000 model maintains the crankcase oil level of an engine,
pump or compressor. Adjusted to the correct running-oil-level, the LM2000 will
replenish oil as it is used. An integral, low-level switch will alarm and/or shut-
down the equipment if supply oil is lost and the equipment continues to use oil.
Specifications
Crankcase Balance Vent Connection: 1/2 NPTF (top).
Inlet Connection: 1/2 NPTF with removable screen (side).
Outlet Connection: LM2000 3/4 NPTF (bottom).
LM2000S 2 x 3/8 NPTF (side)
1 x 3/4 NPTF (bottom)
Thumb-Valve
TM
Material: Viton.
Snap-switch: SPDT rating 10 A, 125 VAC; 0.5 A, 125 VDC; 10 A, 30 VDC.
Wire leads: 18 AWG x 24 in.(609 mm) length.
Conduit Connection: 1/2 inch conduit (female, top).
Case: Die cast aluminum
Lens: Clear “Frog Eye” non-staining, high impact, high temperature nylon; UV
and heat stabilized.
Dial: High visibility white background with green and white “index” lines
for normal level indication.
Maximum Inlet Pressure: 9.50 psi/25 ft. oil (head pressure).
Maximum Case Pressure: 15 psi (103 kPa).
Maximum Differential: 2 in. (51 mm) between running and stopped.
Maximum Ambient Temperature: 250°F (121°C).
Float: Brass
Flow Rates: SAE 40 motor oil @ 32°F (0°C) with 2 ft. head pressure: 0.5
GPH (1.9 LPH).
NOTE: Friction losses due to piping not considered.
Optional Vent Fittings Kit: 15000954
The 15000943 kit is sold separately. It includes the following items:
Quantity Description
1 Tubing vent (15050202).
1 1/4 x 1/4 NPT Connector (85030447).
Optional Hose Kit:
15000355
Quantity Description
1 1/2 in. (13 mm) I.D. x 3 ft. (914 mm) long hose (89020202)
1 1 in. (25 mm) I.D. x 3 ft. (914 mm) long hose (89020203)
2 1/2 in. (13 mm) worm gear clamp (00003502)
2 1 in. (25 mm) worm gear clamp (00003503)
2 1/2 NPT x 1/2 in. (13 mm) barbed fitting (89080801)
2 3/4 NPT x 1 in. (25 mm) barbed fitting (89081001)
Thumb-Valve™ Operation
As the equipment uses oil, the float falls, providing immediate level compen-
sation. At FULL position, the float holds the valve closed. If the clean oil
supply is depleted and oil level continues to fall, the low level switch will
operate an alarm or equipment shutdown.
Service Parts
(Specify part number)
Description Part Number
Vent Fittings Kit 15000954
Hose Kit 15000355
1/2NPT x 1/2 in. Hose Barbed Fitting 89080801
3/4NPT x 1/2 in. Hose Barbed Fitting 89081001
3/8NPTF x 1/2 in. Hose Barbed Fitting 89080601
Pipe Bracket Kit 15000238
Universal Flange Kit 15010224
LM2000/LM2000S Lube Level Maintainer
Installation Instructions
LM-00011N
Revised 10-03
Section 15
(00-02-0423)
COM.
N.O. (black)
N.C. (red)
