Murphy LLS User's Manual
Contents
1. 2 in NPT Process Connection Do NOT Tamper with t te inp 3 4 14 NPT 38 mm Conduit Inlet Sensor Enclosure End View NSZ Diaphragm rn LLSR and LLSRB Models Switch Enclosure Front View Switch Enclosure MAX Switch Trip Point Adjustment Panel 3 4 in 19 mm 17 64 x 1 2 in 7 x 13 mm lt mounting holes 4 places 2 1 2 in 64 mm _ Transmitting Do NOT Tamper with tube 5 feet these Sealed 1 524 m std Connections Sensor Enclosure Front View LLSR models 3 3 4 in 95 mm dia LLSRB models 3 7 8 in 98 mm dia HA j 2 7 8 in a an Body 73 mm 1 13 16 in E T e Se 1 in NPT female Connection Pulsation Dampener PD8187 Option _1 in NPT male lt Process Connection 2 places ia mm l INSTALLING THE LLS SERIES PRESSURE SWITCH USE WRENCH ON SHANK TO TIGHTEN LOOSEN CONNECTIONS DO NOT TWIST THE ENCLOSURE WHEN SCREWING THE LLS INTO THE WARNING PERFORM THE INSTALLATION WITH POWER SOURCE OFF NEVER EXCEED RATED PRESSURE RANGE FOR THE UNIT PROCESS THIS WILL DAMAGE INTERNAL COMPONENTS FILLED MECHANISM AND THE SEALS DO NOT OVERTIGHTEN THE UNIT Connecting the LLS and LLSB Series To install the LLS and LLSB Series a vertical mounting is recommended 1 The unit threads directly into a 2 in 11 1 2 NPT tee on the lead line CAUTION DO NOT TAMPER2. Figure 2 Transmitting Tubing capillary Housing Bolts Diaphragm Wrench pe Flats T_T 4m _ Pulsation Dampener optional YS 1 in NPT a INE Line Tee MENTS ARE WITHIN THE LLS RATINGS BEFORE WIRING THE UNIT DETERMINE VOLTAGE AND POLARITY FOR THE APPLICATION WARNING PERFORM THE WIRING OPERATION WITH THE POWER SOURCE OFF MAKE SURE VOLTAGE AND CURRENT REQUIRE IF THE UNIT IS USED IN HAZARDOUS AREAS MAKE THE AREA SAFE BEFORE REMOVING THE SNAP SWITCH ES COVER If switch trip point needs to be adjusted see page 4 LLS Series Hook up all models To wire the LLS Series use proper the electrical conduit 1 A 3 4 14 NPT inlet connection for conduit installation is provided at the top end of the switch enclosure see opposite page Dimensions for location NOTE The plastic plug supplied is to protect the conduit inlet threads and must be removed before wiring the unit 2 Using a 3 16 in hex wrench unscrew the 4 hex cap screws Now proceed to remove the square cover to reveal snap switch es 3 To wire the unit refer to the typical wiring drawing Figure 3 and to the Schematic shown at right Wire the LLS Series switch es with 60 75 C 140 167 F insulated wire 4 A terminal inside the switch enclosure is provided for case or equipment grounding refer to Figure 3 for location 5 After completing wiring replace the switch cover and make sure it is tightly secured before applyin
3. USA W Frank W Murphy Pte Ltd e mail murmexs sanluis podernet com mx tel 918 627 3550 fax 918 664 6146 26 Siglap Drive Republic of Singapore 456153 E Murphy Switch of California e mail fwmurphy ionet net tel 65 241 3166 fax 65 241 8382 P O Box 900788 Palmdale California 93590 USA E Frank W Murphy Southern Division e mail fwmsales fwmurphy com sg tel 805 272 4700 fax 805 947 7570 P O Box 1819 Rosenberg Texas 77471 USA ml Murphek Pty Ltd e mail sales murphyswitch com tel 281 342 0297 fax 281 341 6006 1620 Hume Highway Campbellfield Vic 3061 Australia Ml Frank W Murphy France e mail murphysd intertex net tel 61 3 9358 5555 fax 61 3 9358 5558 tel 33 1 30 762626 fax 33 1 30 763989 Printed in U S A
4. 15 3 4 x 11 x 5 1 4 in 400 x 279 x 133 mm Max System psi MPa Wetted Parts Materials 50 450 100 1750 200 2500 400 4000 50 450 100 1750 200 2500 400 4000 50 450 100 1750 200 2500 50 450 100 1750 200 2500 400 4000 345 kPa 3 1 MPa 689 kPa 12 MPa 13 8 MPa 17 2 MPa 2 8 MPa 27 5 MPa 345 kPa 3 1 MPa 689 kPa 12 MPa 13 8 MPa 17 2 MPa 2 8 MPa 27 5 MPa 345 kPa 3 1 MPa 689 kPa 12 MPa 13 8 MPa 17 2 MPa 345 kPa 3 1 MPa 689 kPa 12 MPa 13 8 MPa 17 2 MPa 2 8 MPa 27 5 MPa 5 45 15 100 20 150 75 450 34 kPa 310 kPa 103 kPa 689 kPa 137 kPa 1 03 MPa 517 kPa 3 1 MPa 34 kPa 310 kPa 103 kPa 689 kPa 137 kPa 1 03 MPa 517 kPa 3 1 MPa 34 kPa 310 kPa 103 kPa 689 kPa 137 kPa 689 kPa 34 kPa 310 kPa 103 kPa 689 kPa 137 kPa 1 03 MPa 517 kPa 3 1 MPa CRS steel sensor chromate plated yellow Ni SPAN diaphragm Thick wall 304 stainless steel sensor housing Ni SPAN diaphragm Meets NACE MR 01 75 standard for direct exposure to H2S Remote sensor Nickel plated steel w stainless steel capillary Teflon coated diaphragm Remote sensor AISI 316 stainless steel housing stainless steel capillary and armor AISI 316L stainless steel Teflon coated diaphragm Teflon DuPont Trademark LLS and LLSB Models Switch Enclosure Top View Complete Unit Front View Switch 9 1 4 in Enclosure Switch Trip Point Adjustment Panel O 2 these Sealed Connections Sensor Body
5. LLS LLSB LLSR LLSRB Series Models Lead Line Pressure Switches Installation and Operation Instructions LLS 93096N Effective 03 94 Section 05 Lqp E Te phy Please read the following information before installing A visual inspection of this product for damage during shipping is recommended before mounting It is your responsibility to have a qualified person install the unit and make sure installation conforms to NEC and local codes MERA WARNING ZA LD 4D aw 42 T 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 Description The LLS Series is a pressure switch for applications where viscous liquids could plug the sensing orifice LLS and LLSB models have a 2 inch NPT male connection which attaches directly into the process line LLSR and LLSRB models feature a remote sensor connected to the pressure switch by a length of stainless steel capillary and armor The snap acting switch is field adjustable The switch is housed in a hard anodized aluminum enclosure Optional for LLSR and LLSRB models is a 1 inch NPT x 1 inch NPT male pulsation dampener to minimize damaging pressure pulsation to the switch Specifications Maximum Ambient Temperature 10 to 160 F 23 to 71 C e Maximum Process Temp
6. WITH OR BREAK SEALED CONNEC TIONS APPLY PIPE SEALANT TO PROCESS CONNECTION THREADS 2 Tighten the bottom housing to the lead line tee using ONLY the transmitter wrench flats see figure 1 3 Check for leakage on any of the connections Make sure that the installation conforms with local and other applicable codes Connecting the LLSR and LLSRB Series For mounting the switch enclosure refer to Dimensions on page 2 The following instructions are based on the usage of a PD8187 Pulsation Dampener option shown in Figure 2 at right 1 Install sensor pulsation dampener into pressure source connection CAUTION THE PD8187 PULSATION DAMPENER IS NOT INTENDED AS A SHUTOFF VALVE APPLY PIPE SEALANT TO THE THREADS 2 Loosen the eight housing bolts until the bottom housing is free to turn CAUTION WHEN LOOSING THE EIGHT HOUSING BOLTS MAKE SURE NOT TO UNSCREW THE GREEN DIAPHRAGM CAPSULE 3 Tighten the bottom housing to the pulsation dampener connection 4 Tighten the eight housing bolts to 25 3 foot Ibs Stagger the tighten ing to assure even clamping 5 Route capillary away from heat source exhaust manifold Excess capillary should be carefully coiled and secured do NOT cut it WIRING THE LLS SERIES PRESSURE SWITCH Figure 1 Do NOT Tamper with This Connection Do NOT Tamper with I these Sealed Connections a Use Wrech Flats to Screw the LLS Into the Process Wrench Flats 2in NPT lt
7. erature 40 to 160 F 40 to 71 C e Temperature Compensation The volumetric expansion and contraction of the fill may cause a shift of 3 to 5 of the set point e Switch Enclosure Aluminum hard anodized black NEMA 4 4x NEMA 7 and 9 explosion proof waterproof and corrosion resistant Suitable for Class I Div 1 Groups A B C D Class II Div 2 Groups E F G Sensor Model Selection Table Switch Adjustment Range psi kPa MPa psi kPa MPa Dead Band Approximate LLS Series Pressure Switch e Sensor Body LLS CRS steel chromate plated 2 in NPT connection LLSB Thick wall 304 stainless steel sensor 2 in NPT process connection LLSR Remote Sensor Nickel plated steel stainless steel capillary LLSRB Remote Sensor 316 stainless steel housing and capillary Diaphragm Materials LLS LLSB Ni SPAN LLSR LLSRB 3 6L S Steel Teflon coated e Snap switch Ratings SPDT Std 15 A 125 250 or 480 VAC SPDT Gold 100 mA 125 VAC 0 250 A 6 VDC DPDT Std 17 A 125 or 250 VAC DPDT Gold 100 mA 125 VAC 0 250 A 6 VDC e Trip Point Adjustment Field adjusted with screwdriver e LLSR LLSRB Mount 4 hole bolt pattern 1 4 in 6 mm dia bolts e LLS LLSB Mount Direct mount into process 2 in NPT connection Shipping Weight LLS LLSB 4 Ibs 9 oz 2 25 kg LLSR LLSRB 7 Ibs 12 02 3 23 kg Shipping Dimensions LLS LLSB 10 x 9 1 4 x 5 3 4 in 254 x 235 x 146 mm LLSR LLSRB
8. g power to the system Schematic P Figure 3 DPDT N Customer SPDT w ee Wiring ww DPDT NNA hi 3 4 in 14 NPT Conduit Inlet Provision for Case Ground Terminal ADJUSTING THE TRIP POINT CAUTION REMEMBER THAT THE FIELD ADJUSTABLE TRIP POINT MAY HAVE BEEN FACTORY SET TO YOUR SPECIFICATIONS ADJUSTMENT OF THE TRIP POINT VARIES ACCORDINGLY TO THE APPLICATION AND MUST BE PERFORMED BY A QUALIFIED PERSON LLS Series Trip Point Adjustment if necessary all models Figure 4 NOTICE If trip point is not specified the switch will be set at approx imately 50 of full scale To perform trip point re adjustments a test stand with variable pressure source a test light and a pressure gauge such as our OPLG or OPLFG MURPHYGAGE may be used To Reset for Rising Pressure 1 Locate and remove the Switch Trip Point Adjustment cover round to reveal the Adjustment Wheel see figure 4 Snap switch es Cover or Square Cover Do NOT remove until the area is made NON HAZARDOUS Screwdriver Adjustment WARNING DO NOT REMOVE SNAP SWITCH COVER AT THE Wheel INSTALLATION SIGHT UNTIL THE AREA IS MADE NON HAZARDOUS To increase To decrease 2 After area is made non hazardous proceed to remove the square cover to reveal the snap switch es ral lt u 3 Connect test light to COM and N C terminals The light should turn ON Gradually increase the pressure until the light
9. turns OFF Observe the trip point pressure reading Switch Trip Point 4 With a screwdriver turn the adjustment wheel to the desired setting Adjustment Cover Repeat step 4 until the light turns OFF at the desired pressure or Round Cover To Reset for Falling Pressure Follow step I and step 2 above then 3 Connect test light to COM and N O terminals The light should stay OFF Gradually increase the pressure until the light turns ON Observe the trip point pressure reading 4 With a screwdriver turn the adjustment wheel to the desired setting Repeat step 4 until the light turns OFF at the desired pressure Replace the adjustment and the switch covers securely WARRANTY A two year limited warranty on materials and workmanship is provided with this Murphy product Details are available on request and are packed with each unit 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 E Frank W Murphy Ltd E Murphy de M xico S A de C V N A o Cyn phy Church Rd Laverstock Salisbury SP1 1QZ U K Blvd Antonio Rocha Cordero 300 Fracci n del Aguaje Since 1939 M mrp tel 44 1722 410055 fax 44 1722 410088 tlx 477088 San Luis Potosi S L P M xico 78384 E Frank W Murphy Manufacturer e mail sales fwmurphy co uk tel 52 48 206264 fax 52 48 206336 P O Box 470248 Tulsa Oklahoma 74147
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