Murphy LR579, LR589, LR500, LR589NC User Manual
Unique Anti-Clog Thumb-Valve
™
Regulate Oil Flow From Reservoir to
Keep Lubricator Full
Eliminates Manual Oil Check and
Refill Time
Low-level Shutdown Switch
Reduce Engine and Pump Repairs
Caused By Low Lube Level
Model LR579
Regulates Lincoln Lubricators
Models LR589 and LR589NC
Regulates Lincoln Lubricators
18 AWG x 24 in.
(1.0 mm
2
x 610 mm)
Wire with Ring Terminal
18 AWG x 30 in.
(1.0 mm
2
x 762 mm)
Switch Wires
1/2 NPT Conduit
Connection
1/2 NPT Oil Inlet Connection
Tenzalloy Case
Hermetically-Sealed
Mercury Switch
Low Level
Shut-Down Contacts
304 Stainless
Steel Float
304 Stainless Steel Float
1/2 NPT Oil Inlet
Connection
Cane Vent
Pressure-Seal
Thumb-Valve
with Viton
Pressure-Seal
Thumb-Valve
with Viton
Aluminum
Case
Suitable for Class I,
Division 2, Hazardous
Locations
Electrical Diagram
LR589 Electrical Diagram
LR589NC Electrical Diagram
Switch Rating: 2A @ 20 V AC/DC, resistive
Switch Rating: 1A @ 120 V Switch Rating: 1A @ 120 V
LR500 Series
LREG-96121B
Revised 08-02
Catalog Section 15
(00-02-0062)
Oil Level Regulators for Lubricators
Description
The LR500 Series Level Regulators automatically add oil to a
lubricator to maintain the factory recommended level. This
function eliminates the work time necessary for manual checks
and refills.
Each model has a low-level shutdown switch to protect equipment when oil supply is lost. If the lubricator oil level drops
below the minimum operations level, the low-level switch will
operate an alarm and/or shutdown the equipment.
Model LR579 is for Lincoln lubricators. It features an
adjustable low-level shutdown contact.
LR589 is for Lincoln lubricators, and the LR589NC is the normally closed wired version of the LR589.
How to Order
Specify model when ordering.
LR579
LR589
LR589NC
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
Dimensions
Before beginning installation of this Murphy product:
Disconnect ALL electrical power to the machine.
Make sure the machine CANNOT operate during installation.
Follow all safety warnings of the machine manufacturer.
Read and follow all installation instructions.
1. Remove the cover on a vacant cell of the lubricator
(DO NOT install in bays next to crank arm).
2. Bolt the level regulator in place, using the bolts that
held the cover.
3. Connect the flex hose from the oil reservoir to the oil
inlet at the level regulator. Oil reservoir must be at
least two feet (0.61 meters) above the level regulator.
4. Wire switch for alarm and/or shutdown. One switch
can be used to shut-down all equipment supplied by a
common oil reservoir.
1-1/2 in.
Installation
Typical Wiring for LR579
CN985RL / 985RL975RL
Typical Wiring for LR589
Shipping Weight: 13 oz. (368 g).
Shipping Dimensions:4-3/4 x 4-3/4 x 3-1/4 in.
(121 x 121 x 83 mm).
Shipping Weight: 12 oz. (340 g).
Shipping Dimensions:4-3/4 x 4-3/4 x 2-3/4 in.
(121 x 121 x 70 mm)
LREG-96121B page 2 of 2
Printed in U.S.A.
(38 mm)
Vent Tube
1/4 inch (6 mm)
Copper
4-7/16 in.
(113 mm)
5 in.
(127 mm)
1 Inch
Hex
9/32 in.
(7 mm)
diameter
2-places
Contact
Adjustment
Screw
Float
1-1/2 in.
(38 mm)
4-1/16 in.
(103 mm)
Float
4-7/16 in.
(113 mm)
5-1/16 in.
(129 mm)
3/4 in.
(19 mm)
9/32 in.
(7 mm)
diameter
2-places
1-1/8 in.
(29 mm)
Switch Operating Point
2-1/2 in.
(64 mm)
WARNING
Murphy MS2100
Magnetic Switch
4
6 2 3
1
Murphy MS2100
Magnetic Switch
1
6 2 3
5
4
5
CD Ignition
CD Ignition
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