Murphy Series LM300 User's Manual
Contents
1. a Adjustment Bolt Figure 3B NOTE Check clearance between crankcase and mounting bracket before installing the mounting bracket If space between the crankcase and mounting bracket does not allow installation and access to the adjustment bolts advance to Step 3 2 Mount the LM300 to the universal bracket using two 3 8 16 UNC x 1 inch bolts supplied DO NOT tighten the adjustment bolts too tight You will have to adjust the LM300 later in the installation process 3 If space between the crankcase and mounting bracket is narrow install the universal mounting bracket to the LM300 before installing to the crankcase oil pan Connecting Fittings and Hoses The following instructions are for all LM300 series level maintainers All steps that reference oil inlet or oil supply tank DO NOT apply to non level maintaining models Also these instructions are based on the Murphy optional hose kit described on page 1 If you did not order the optional hose kit gather the hoses clamps and fittings as specified in the optional hose kit 1 Install the LM300 fittings in their proper locations NOTE Apply a sealant such as teflon to all threaded connections 2 Attach the 1 inch 25 mm diameter flexible monitoring hose to the crankcase and the monitoring port on the LM300 See Figure 4 CAUTION The hose must slope slightly downward from the LM300 and MUST NOT have any droop or low spots NOTE If the drain p2. CSA certified for non hazardous locations Enclosure Type 4 certified LM301 EX thru LM305 EX CSA certified for Class I Groups C and D Class II Groups F and G hazardous locations Enclosure Type 4 certified Float Rigid polyurethane foam Polyurethane coated Maximum Ambient Temperature 250 F 121 C Oil Inlet Connection Top entry 1 2 14 NPT with built in filter screen removable for cleaning Inlet Orifices 1 4 in 6 mm standard 1 8 in 3 mm available Wire switch models 18 AWG x 13 in 1 0 mm x 330 mm Maximum Inlet Pressure MIP Max Differential 2 in 51 mm between running and stationary oil level 30 psi 207 kPa 2 07 bar with 1 8 in 3 mm orifice 15 ft oil 4 6 m oil with 1 4 in 6 mm orifice Maximum Case Pressure MCP 15 psi 103 kPa 1 03 bar Orifice Seal Buna N Thumb Valve Switch Contact Silver SPDT snap acting 10A 125 250VAC 10A 30VDC 1 only for low level 2 only for high amp low or 2 only for low with alarm before shutdown SD oon ANA Shown with optional hose kit fittings Patent 5493086 Outlet Connection 3 4 14 NPT left side right side and bottom Crankcase Balance Vent Fitting 1 2 14 NPT Mounting Accepts Murphy pipe mounting or universal mounting brackets 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 l
3. high zone and 3 8 in 10 mm from the bottom of the low zone The dial in L Normal Figure 9 shows that if level continues to drop into the low low zone a 3 4 in Operating Range shutdown will occur 9mm Pere oe NOTE Color zones on dial face show approximate normal operating zones Actual conditions may vary depending upon operating characteristics of the engine Placement of the LM300 according to the above instructions will m Figure 8 LM302 LM303 compensate for these conditions Normal Normal Operating Range Operating Range Low Z 19 mm Low Zone Alarm shutdown or Alarm Low Low Zone Shutdown 3 8 in 1 4 in 10mm 6mm Figure 7 LM301 Figure 9 LM304 LM305 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 CONTROL SYSTEMS amp SERVICES DIVISION FRANK W MURPHY LTD MACQUARRIE CORPORATION M U R P H Y PO Box 1819 Rosenberg Texas 77471 USA Church Rd Laverstock Salisbury SP1 107 U K 1620 Hume Highway 1 281 633 4500 fax 1 281 633 4588 44 1722 410055 fax 44 1722 410088 Campbellfield Vic 3061 Australia e mail sales fwmurphy com e mail sales fwmurphy co uk 61 39358 5555 fax 61 3 9358 5558 FW Murphy www fwmurphy co uk e mail murphy macquarrie com au PO Box 470048 MURPHY DE MEXICO S A DE C V fwmurphy co phy macquarrie com Tulsa O
4. ondui 1 2 14 NPT q ars Test Knob 8 1 4 in 210 mm i Soo Monitoring Port Connection Applies to level maintaining models only 3 places 3 4 14 NPT 7 3 16 in 183 mm Snap Switch Case Assembly 5 15 16 in 151 mm 3 8 16 UNC 2B lounting Holes 2 places 5 3 16 in 132 mm Mounting Brackets with Hardware 15000371 pipe bracket Additional Hardware 5 20 in Supplied 4 50 in 132 mm 4 3 8 16 UNC x 1 inch 1 14 mm Hole 88 a 25 mm screws 22 mm dia 4 3 8 16 nut 4 318 1D lockwasher O mm 2 50 in eee minimum 2 3 8 I D flat washer bottom surface 2 places 1 4 20 NC 2 places 15000370 universal bracket Additional Hardware Slot 390 in 10 mm Supplied x 2 in 51 mm 2 3 8 16 UNC x 1 inch 4 places 25 mm screws Slot 390 in 10 mm 4 3 8 LD flatwasher 4 71 in 120 mm 3 places 2 3 8 L D lock washer 2 3 8 16 nut TYPICAL INSTALLATION Mounting all LM300 Series models NOTE Mount the LM300 series level maintainers as close as possible to the crankcase Also excessive vibration can cause overfill Be sure mounting brackets are supported The following instructions are based on the usage of the pipe and universal mounting brackets shown above Pipe Bracket Mounting 1 Mount a nominal 1 2 inch 21 mm diameter pipe to the deck of the engine 2 Install the pipe bracket to the LM30
5. 0 using two 3 8 16 UNC x 1 inch bolts supplied See Figure 1A 3 Slip the LM300 onto the pipe and install the two adjustment bolts Each adjustment bolt consists of a 3 8 16 UNC x 1 inch bolt and two nuts See Figure 1B DO NOT tighten the adjustment screws too tightly because you will have to adjust the LM300 later in the installation process Pipe Bracket 8 adjustment Bolts Crankcase Figure 1A Figure 1B Mounting with Universal Bracket The universal bracket has two mounting methods deck mounting and pan mounting Deck Mounting 1 Install the universal bracket to the deck as shown in Figure 2A with two flat washers and two 3 8 inch 10 mm diameter bolts not supplied Universal Bracket j Adjustment Bolts Figure 2A Figure 2B 2 Mount the LM300 to the universal bracket using two 3 8 16 UNC x 1 inch 25 mm bolts supplied Figure 2B DO NOT tighten the adjustment screws too tightly You will have to adjust the LM300 later in the installation process LM 92164N page 2 of 4 TYPICAL INSTALLATION continued Crankcase Oil Pan Mounting 1 Install the universal bracket to the crankcase using the existing crankcase bolts Figure 3A Crankcase bolt diameter must be no larger than 7 16 inch 11 mm cates i N Bolt Universal Bracket Note Clearance before oe oer 3A
6. Installation Instructions for Level Maintainers Model Series LM300 Read the following instructions before installing A visual inspection of this product for damage during shipping is recommended before mounting These installation instructions are intended for all LM300 series models LM 92164N Revised 10 03 Section 15 00 02 0176 MURPHY gt GENERAL INFORMATION Ya at E a WARNING 4 LD a aw ae 7 L4 BEFORE BEGINNING INSTALLATION OF THIS MURPHY PRODUCT V Disconnect all electrical power to the machine V Make sure the machine cannot operate during installation V Follow all safety warnings of the machine manufacturer V Read and follow all installation instructions LM300 Level Maintainer only no switches LM301 Low switch contacts for low level shutdown or alarm Four wires SPDT LM302 Two switches for low and high level shutdown or alarm Four wires DPST wired N O in normal operating ranges LM303 Two switches for low and high level shutdown or alarm Four wires DPST wired N C in normal operating ranges LM304 Two switches Alarm before shutdown on low level and shutdown on low low level Four wires DPST wired N O in normal operating ranges LM305 Two switches Alarm before shutdown on low level and shutdown on low low level Four wires DPST wired N C in normal operating ranges Specifications Case Cover Die cast aluminum Switch Housing Aluminum Approval Rating LM301 thru LM305
7. have low spots or droops Maximum head pressure rating using standard 1 4 in 6 mm orifice is 15 ft 4 6 meters See Flow Rate test on page 1 for additional orifice pressure ratings Oil Supply Tank Figure 5 3 Before filling the supply tank with oil be sure the tank is clean and dry andthe shutoff valve is closed Also be sure all hoses and clamps are tight Fill the tank with CLEAN oil WARNING Overfill condition can be caused by excessive inlet pressure maximum inlet pressure depends on orifice and or improper vent to crankcase installation See Flow Rate Test on page 1 for maximum pressure 4 After oil supply tank is full open the shutoff valve Next make the proper electrical connections for the application See contact ratings on page 1 and schematics on page 4 Switch Test switch models only To test the shutdown and or alarm functions perform the following 1 Unscrew protective boot from test knob IMPORTANT Always replace boot after testing 2 Turn the test knob 1 4 turn to the right clockwise for low test indication Figure 6 3 Turn the knob 1 4 turn to the left counterclockwise for high test indication DO NOT FORCE THE TEST KNOB TO TURN NOTE After the engine shuts down you will notice that the oil in the sight gauge glass will rise above normal running level possibly showing an overfill condition This is a result of drain back to the engine crankca
8. ines for normal level indication Test Knob Rotate to test switch operation Turn clockwise for low level test and turn counterclockwise for high level test Flow Rate Test Using SAE 30 32 F 0 C Orifice Diameter Flow Rates Pressure 4ft oil 15ft oil 4 7 GPH 31 0 GPH 1 2 m oil 4 6 m oil 17 8 LPH 117 3 LPH 10 psig 30 psig 68 9 kPa 207 kPa 69 2 07 bar 16 9 GPH 32 1 GPH 63 7 LPH 121 5 LPH Standard NOTE Friction losses due to piping NOT considered Optional Hose Kit 15000355 Quantity Description 1 1 2 in 13 mm I D x 3 ft 914 mm long hose 1 in 25 mm I D x 3 ft 914 mm long hose 1 2 in 13 mm worm gear clamp 1 in 25 mm worm gear clamp 1 2 NPT x 1 2 in 13 mm barbed fitting 3 4 NPT x 1 in 25 mm barbed fitting NINI By N TTCSA certified with switch contacts rated at 10 A 250 VAC standard Products covered by this bulletin comply with EMC Council directive 89 336 EEC regarding electromagnetic compatibility except as noted LM 92164N page 1 of 4 LM300 Series Enclosures The dimensions below are for the optional EX model enclosure The standard model enclosure dimensions are the same except the height and width which are 7 in 178 mm H 7 7 8 in 200 mm W Oil Inlet Connection 6in 1 2 14 NPT x with removable 182 mm ry screen Crankcase roan Vent
9. klahoma 74147 USA Blvd Antonio Rocha Cordero 300 Fracci n del Aguaje MURPHY SWITCH OF CALIFORNIA i San Luis Potosi S L P M xico 78384 41343 12th Street West 1 918 317 4100 52 444 8206264 fax 52 444 8206336 Palmdale California 93551 1442 USA fax 1 918 317 4266 Villahermosa Office 52 993 3162117 1 661 272 4700 fax 1 661 947 7570 e mail sales fwmurphy com e mail ventas murphymex com mx e mail sales murphyswitch com uieiso 9001 2000 FM 20422 www fwmurphy com www murphymex com mx www murphyswitch com 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 Printed in U S A LM 92164N page 4 of 4
10. lug on the crankcase is used for the connection we recommend installation of a tee to allow draining of the crankcase for service 3 Install the 1 2 inch 13 mm LD x 3 ft 914 mm hose to the vent connection on the LM300 to the vent connection on the crankcase See Figure 4 The vent connection on the crankcase must be well above the regulated oil level All hoses must be clear of obstructions BEFORE CONTINUING VERIFY THAT ALL HOSE CLAMPS ARE TIGHT Oil Inlet Vent Hose Hose Viewing Len Running Engine Crankcase Monitoring Hose Figure 4 4 Fill the crankcase to the proper oil levels With the engine running and warm loosen the mounting bracket adjustment bolts and adjust the LM300 so that the oil level in the sight gauge is aligned with the white index line on the dial Figure 4 Tighten the adjustment bolts securely Connecting the LM300 to an Oil Supply Tank level maintaining models only 1 Remove the caplug from the oil inlet connection Be sure the filter inside the connection is clear of debris Install the oil inlet connection 2 Connect a 1 2 inch I D 13 mm or larger hose to oil inlet fitting on the LM300 and to the shutoff valve on the oil supply tank See Figure 5 For models LM300 thru LM305 recommended minimum mounting of the oil supply tank above the LM is 4 ft 1 2m maximum 15 ft 4 6m The hose must maintain a downward slope and not
11. se and it is normal Therefore on models LM302 and LM303 it may be necessary to wire the high level shutdowns into a class B or C bypass until first time safe lockout so as to allow a permissive start After the engine is re started the level will pull down to the normal running level and the shutdown features will be active A modulating valve Thumb Valve in the level maintaining models will allow oil usage to be made up continuously during operation Figure 6 LM 92164N page 3 of 4 SWITCH WIRING DIAGRAMS WARNING DISCONNECT ALL ELECTRICAL POWER BEFORE CONNECTING ANY WIRES LM301 LM302 LM303 LM304 LM305 SPDT High Low N O High Low N C Alarm before Alarm before DPST DPST shutdown N O shutdown N C DPST DPST O Green O Green O Green O Green O Green 7 Ont 7 Org Bact O High O Normal Ope Bown Low Low Ionio Low Low Normal Normal Blue Orange Low Low Red Low Low High High Float Yellow Normal Blue Normal Orange Yellow Low Low Low Float Float Float Float OPERATING RANGES OF SWITCHES This section applies only to models that have built in switches The illustrations below and to the right show the dials and their operating ranges of the switches If levels are within the designated zones the switch es will activate Notice that High Zone a switch is capable of activating approximately 3 8 in 10 mm from the top of e Shutdown or Alarm the
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