Murphy LM2000 Installation Instructions

LM2000/LM2000S Lube Level Maintainer
Installation Instructions
Please read the following information before installing. A visual inspection of this product for damage during shipping is
recommended before mounting. CRANKCASE MUST BE DRAINED BEFORE INSTALLATION.
WARNING
BEFORE BEGINNING INSTALLATION OF THIS MURPHY PRODUCT
Disconnect all electrical power to the machine.
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Make sure the machine cannot operate during installation.
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Follow all safety warnings of the machine manufacturer.
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Read and follow all installation instructions.
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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 Material: Viton.
TM
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).
GENERAL INFORMATION
Optional Hose Kit: 15000355
Quantity
1
1
2
2
2
2
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.
Thumb-Valve
Snap-switch
Schematic
Service Parts
D s e i r c
V t n e t i F
o H e s K
1/2NPT x 1/2 in. Hose Barbed Fitting
3/4NPT x 1/2 in. Hose Barbed Fitting
3/8NPTF x 1/2 in. Hose Barbed Fitting
P e p i B
Universal Flange Kit
LM-00011N page 1 of 4 LM-00011N page 1 of 4
Description
1/2 in. (13 mm) I.D. x 3 ft. (914 mm) long hose (89020202)
1 in. (25 mm) I.D. x 3 ft. (914 mm) long hose (89020203)
1/2 in. (13 mm) worm gear clamp (00003502)
1 in. (25 mm) worm gear clamp (00003503)
1/2 NPT x 1/2 in. (13 mm) barbed fitting (89080801)
3/4 NPT x 1 in. (25 mm) barbed fitting (89081001)
and
TM
Thumb-Valve™
FULL
Float
Action
LOW
COM.
(white)
(
Specify part number)
i t p n o
n i t s g K t i
t i
c a r t e k K t i
LM-00011N
Revised 10-03
Section 15
(00-02-0423)
Oil Inlet
LM2000
Case
N.C. (red)
N.O. (black)
Low Level Switch
P t r a N u m b r e
5 1 0 0 9 0 4 5
5 1 0 0 3 0 5 5
89080801
89081001
89080601
5 1 0 0 2 0 8 3
15010224