Installation Instructions for
LR-9017N
Revised 03-05
Section 15
(00-02-0177)
LR857 Level Regulator
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.
GENERAL INFORMATION
*
WARNING
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.
Description
Murphy LR857 Lube Level Regulator maintains the crankcase oil level of an engine, pump or compressor. Adjusted to the correct run-
ning-oil-level, the LR857 will replenish oil as it is used. An integral, low-level switch will alarm and/or shutdown the equipment if supply oil is lost and the equipment continues to use oil.
Optional Mounting Brackets And Fittings Kit
Murphy offers two mounting brackets for the LR857. The (15000238)
Pipe Bracket Kit fits a 7/8 in. (22 mm) diameter pipe. The (15010224)
Universal Flange Kit allows various mounting methods. See
Dimensions section on reverse side.
The (15000420) Fittings Kit includes the following:
Specifications
Inlet Connection: 5/8 in. (16 mm) I.D. hose
Outlet Connection: 3/8 NPT
Snap-switch: SPDT rating 10 A @ 125 VAC; 0.5 A @ 125 VDC;
10 A @ 30 VDC
Conduit Connection: 1/2 NPT
Quantity Description
1
1
1
1/4 in. (6 mm) O.D. copper cane tube (vent connection)
1/4 in. (6 mm) tube x 1/4 male pipe fitting
1/2 in. (13 mm) I.D. hose fitting (outlet connection)
Case: Die cast aluminum
Lens: Polycarbonate
Float: Brass
15000159
15000100
15000161
15000941
9.73 psi 25
20
15
SUPERSEDED
FULL
Float
Action
LOW
COM. (white)
N.O. (black)
N.C. (red)
Oil Inlet
As the equipment uses oil, the float falls, providing immediate level compensation. At FULL position, the float holds the valve closed. If
Service Parts
Part Number Description
15010224
Inlet Valve Assembly
Glass and Switch Assembly
Lid Assembly
Float Assembly (Brass-std)
Universal Flange Kit
Flow:
USGPM
0.2500 0.5000
15000238
15000420
Pipe Bracket Kit
Fittings Kit the clean oil supply is depleted and oil level continues to fall, the low
* Products covered by this literature comply with EMC Council directive 89/336/EEC regarding electromagnetic compatibility except as noted. level switch will operate an alarm or equipment shutdown.
LR-9017N page 1 of 2
4-15/16 in.
(125 mm)
LR857
5/8 in. (16 mm)
I.D. Inlet Hose
Connection
1/4 NPT Internal
Threads
Test
Knob
9/32 in. (7 mm)
Diameter Holes
2 places
2-25/32 in.
(71 mm)
1/4 NPT
DIMENSIONS
Universal Flange Kit
(15010224)
4-13/16 in.
(122 mm)
Plug
1/2 NPT
Slot, .390 in. (10 mm) x 2 in. (51 mm)
4 places
Slot, .390 in. (10 mm) x 4.71 in. (120 mm)
3 places
Pipe Bracket Kit
(15000238)
7.50 in.
(191 mm)
4.50 in.
(114 mm)
5.20 in.
(132 mm)
Hole .88 in.
(22 mm) dia.
1.75 in.
(44 mm)
.376 in.
(10 mm) minimum bottom surface
2 places
1/4-20 NC
2 places
2.50 in.
(64 mm)
1/2 NPT
Electrical
Conduit
Connection
3/8 NPT
Outlet
Connection
4-1/2 in.
(114 mm)
Mounting Holes
Plug
3/8 NPT
TYPICAL INSTALLATION
Connection of the LR857 must be made to the equipment crankcase at the lowest possible point–usually the oil drain plug. Hoses, hose clamps and supply tank are supplied by the customer. Also these instructions are based on the Murphy optional fittings kit described on the reverse side. If you did not order the fittings kit, gather the proper fittings as specified on the reverse side.
3. For sealed crankcases, connect a 1/4 in. (6 mm) O.D. tube from the crankcase to the tube fitting on the LR857 (see drawing below).
For vented crankcases install the copper cane. CAUTION: The crankcase vent connection MUST BE above the oil level so that the tubing will not be restricted by oil splash, etc. Failure to install the tubing or cane vent will result in improper operation and oil spillage.
BEFORE CONTINUING, VERIFY THAT ALL HOSE CLAMPS ARE TIGHT 1. Determine the mounting location on or near the equipment for the
LR857. Mount the LR857 using the optional pipe mounting bracket
(15000238) or universal mounting bracket (15010224) or suitable customer supplied mounting. NOTE: Mounting must allow vertical adjustment of the LR857 to locate proper regulated level.
2. Drain the crankcase and attach a 1/2 in. (13 mm) I.D. flexible hose from the crankcase to the oil outlet port on the LR857. CAUTION: The hose must slope slightly downward from the LR857 and MUST NOT have any droop or low spots. NOTE: If the drain plug on the crankcase is used for the connection, we recommend installation of a tee to allow draining of the crankcase for service. All hoses should be as short in length as possible.
4. Refill the crankcase to the proper oil levels. Vertically adjust the
LR857 so that the pointer is consistent with the actual running oil level in the crankcase. Check this level against the “add oil” marking on the dip stick. To determine the level at which you wish oil to be added, either drain oil from the crankcase or slightly lower the LR857 mounting so that the pointer/switch actuator will indicate the level at which oil will be added. This can be estimated by lowering the LR857 an amount equal to the difference between the “FULL” and “ADD” marks on the dip stick. Tighten the mounting bracket.
5. Connect a hose between the oil inlet of the LR857 and the oil supply tank. The hose must maintain a downward slope and not have low spots or droops. A minimum height of 2 ft. (0.6m) above the LR857 is
Shutoff
Valve
CLEAN Oil Supply Tank.
Height above LR recommended
2 ft. (0.6 m) minimum and
25 ft. (7.7 m) maximum recommended. Maximum head is 25 ft. (7.7 meters) or 10 psi
(6.9 kPa) [0.69 bar]. NOTE: We recommend a shutoff valve be attached in the bottom of the supply tank. A filter screen between the
For vented crankcase use the cane vent. For sealed systems, vent must be piped back to crankcase, above oil level.
Wire to switch circuits
Electrical
Conduit
LR857
Oil Outlet
Oil
Inlet
Crankcase supply and the LR857 is also recommended.
6. Before filling the supply tank with oil, be sure the tank is clean and dry and the shutoff valve is closed. Also, be sure all hoses and clamps are
LM500(TF)
ratings on reverse side.
FW Murphy
P.O. Box 470248
Tulsa, Oklahoma 74147 USA
+1 918 317 4100 fax +1 918 317 4266
e-mail [email protected]
NOTE: LR857 shown mounted using a pipe bracket.
BY
Blvd. Antonio Rocha Cordero 300, Fracción del Aguaje
San Luis Potosí, S.L.P.; México 78384
+52 444 8206264 fax +52 444 8206336
Villahermosa Office +52 993 3162117
e-mail [email protected]
FRANK W. MURPHY, LTD.
Church Rd.; Laverstock, Salisbury SP1 1QZ; U.K.
+44 1722 410055 fax +44 1722 410088
e-mail [email protected]
www.fwmurphy.co.uk
Printed in U.S.A. 1190077 www.fwmurphy.com
www.murphymex.com.mx
In order to consistently bring you the highest quality, full featured products, we reserve the right to change our specifications and designs at any time.
LR-9017N page 2 of 2
