Murphy Switch LLS User Manual

LLS-93096N  
Effective 03-94  
Section 05  
LLS, LLSB, LLSR, LLSRB Series Models  
Lead Line Pressure Switches  
®
FRANK W.  
MFR.  
Installation and Operation Instructions  
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.  
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.  
LLS Series Pressure Switch  
Read and follow all installation instructions.  
Sensor Body: LLS: CRS steel chromate plated; 2 in. NPT connection.  
Description  
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:  
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.  
LLS/LLSB: Ni-SPAN®. LLSR/LLSRB: 316L S. Steel–Teflon* coated.  
Snap-switch Ratings: SPDT (Std.): 15 A @ 125, 250 or 480 VAC  
SPDT (Gold): 100 mA @ 125 VAC; 0.250 A @ 6 VDC  
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.  
DPDT (Std.): 11 A @ 125 or 250 VAC  
DPDT (Gold): 100 mA @ 125 VAC; 0.250 A @ 6 VDC  
Trip Point Adjustment: Field-adjusted with screwdriver.  
LLSR/LLSRB Mount: 4-hole bolt pattern; 1/4 in. (6 mm) dia. bolts.  
LLS/LLSB Mount: Direct mount into process (2 in. NPT connection).  
• Shipping Weight: LLS/LLSB: 4 lbs. 9 oz. (2.25 kg).  
LLSR/LLSRB: 7 lbs. 12 oz. (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: 15-3/4 x 11 x 5-1/4 in. (400 x 279 x 133 mm).  
Specifications  
Maximum Ambient Temperature: -10° to +160°F (-23° to +71°C).  
Maximum Process Temperature: -40° to +160°F (-40° to +71°C).  
Temperature Compensation: The volumetric expansion and contraction of  
the fill may cause a shift of ±3% to ±5% of the set point.  
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  
Dead Band Approximate  
Max System  
Base  
Model  
Wetted Parts Materials  
psi  
kPa/MPa  
psi  
kPa/MPa  
psi  
MPa  
50–450  
345 kPa–3.1 MPa  
5–45  
34 kPa–310 kPa  
1500  
2500  
3000  
10.3  
17.2  
20.6  
CRS steel sensor –chromate plated (yellow)  
Ni-SPAN® diaphragm.  
100–1750 689 kPa–12 MPa  
200–2500 13.8 MPa–17.2 MPa  
400–4000 2.8 MPa–27.5 MPa  
15–100 103 kPa–689 kPa  
20–150 137 kPa–1.03 MPa  
75–450 517 kPa–3.1 MPa  
LLS  
5000  
34.4  
50–450  
345 kPa–3.1 MPa  
5–45  
34 kPa–310 kPa  
1500  
2500  
3000  
5000  
1500  
2500  
3000  
10.3  
17.2  
20.6  
34.4  
10.3  
17.2  
20.6  
Thick wall 304 stainless steel sensor housing;  
Ni-SPAN® diaphragm. Meets NACE MR-01-75  
standard for direct exposure to H2S.  
100–1750 689 kPa–12 MPa  
200–2500 13.8 MPa–17.2 MPa  
400–4000 2.8 MPa–27.5 MPa  
15–100 103 kPa–689 kPa  
20–150 137 kPa–1.03 MPa  
75–450 517 kPa–3.1 MPa  
LLSB  
50–450  
345 kPa–3.1 MPa  
5–45  
34 kPa–310 kPa  
Remote sensor–Nickel plated steel w/ stainless  
steel capillary; Teflon* coated diaphragm.  
100–1750 689 kPa–12 MPa  
200–2500 13.8 MPa–17.2 MPa  
15–100 103 kPa–689 kPa  
20–100 137 kPa–689 kPa  
LLSR  
LLSRB  
50–450  
345 kPa–3.1 MPa  
5–45  
34 kPa–310 kPa  
1500  
2500  
5000  
5000  
10.3  
17.2  
34.4  
34.4  
Remote sensor–AISI 316 stainless steel housing;  
stainless steel capillary and armor; AISI 316L  
stainless steel Teflon* coated diaphragm.  
100–1750 689 kPa–12 MPa  
200–2500 13.8 MPa–17.2 MPa  
400–4000 2.8 MPa–27.5 MPa  
15–100 103 kPa–689 kPa  
20–150 137 kPa–1.03 MPa  
75–450 517 kPa–3.1 MPa  
1
* Teflon–DuPont Trademark  
 
INSTALLING THE LLS SERIES PRESSURE SWITCH  
WARNING: PERFORM THE INSTALLATION WITH POWER SOURCE “OFF”. NEVER EXCEED RATED PRESSURE RANGE FOR THE UNIT.  
USE WRENCH ON SHANK TO TIGHTEN/LOOSEN CONNECTIONS. DO NOT TWIST THE ENCLOSURE WHEN SCREWING THE LLS INTO THE  
PROCESS – THIS WILL DAMAGE INTERNAL COMPONENTS, FILLED MECHANISM AND THE SEALS. DO NOT OVERTIGHTEN THE UNIT.  
Connecting the LLS and LLSB Series  
Figure 1  
Do NOT Tamper with  
these Sealed Connections  
To install the LLS and LLSB Series, a vertical mounting is recommended.  
Do NOT Tamper with  
This Connection  
1. The unit threads directly into a 2 in. 11-1/2 NPT tee on the lead line.  
CAUTION: DO NOT TAMPER WITH OR BREAK SEALED CONNEC-  
TIONS. APPLY PIPE SEALANT TO PROCESS CONNECTION THREADS.  
Wrench Flats  
2 in. NPT  
Use Wrech Flats to  
Screw the LLS  
Into the Process  
2. Tighten the bottom housing to the lead line tee using ONLY the  
transmitter wrench flats (see figure 1).  
Lead line tee  
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.)  
Transmitting Tubing  
(capillary)  
Figure 2  
Housing  
Bolts  
Diaphragm  
Body  
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.  
Wrench  
Flats  
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.  
Pulsation  
Dampener  
(optional)  
3. Tighten the bottom housing to the pulsation dampener connection.  
1 in. NPT  
4. Tighten the eight housing bolts to 25±3 foot lbs. Stagger the tighten-  
Lead Line Tee  
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  
WARNING: PERFORM THE WIRING OPERATION WITH THE POWER SOURCE “OFF”. MAKE SURE VOLTAGE AND CURRENT REQUIRE-  
MENTS ARE WITHIN THE LLS RATINGS. BEFORE WIRING THE UNIT DETERMINE VOLTAGE AND POLARITY FOR THE APPLICATION.  
IF THE UNIT IS USED IN HAZARDOUS AREAS, MAKE THE AREA SAFE BEFORE REMOVING THE SNAP-SWITCH(ES) COVER.  
P
If switch trip point needs to be adjusted, see page 4.  
P
Schematic  
NC  
LLS Series Hook-up (all models)  
NC  
C
To wire the LLS Series, use proper the electrical conduit.  
SPDT  
C
DPDT  
NO  
NC  
NO  
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).  
C
NO  
NOTE: The plastic plug (supplied) is to protect the conduit inlet threads  
and must be removed before wiring the unit.  
Figure 3  
Customer  
Wiring  
DPDT  
SPDT  
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).  
3/4 in.-14 NPT  
Conduit Inlet  
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.  
Provision for  
Case Ground  
N.O. N.C. COM.  
NC NO  
C
NC NO  
C
Terminal  
Block(s)  
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 applying power to the system.  
3
 
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.  
Snap-switch(es) Cover  
or Square Cover  
Do NOT remove until  
the area is made  
To Reset for Rising Pressure  
1. Locate and remove the Switch Trip Point Adjustment cover  
(round) to reveal the Adjustment Wheel, (see figure 4).  
Screwdriver  
NON-HAZARDOUS  
Adjustment  
Wheel  
WARNING: DO NOT REMOVE SNAP-SWITCH COVER AT THE  
INSTALLATION SIGHT UNTIL THE AREA IS MADE NON-HAZARDOUS.  
To increase  
set point  
To decrease  
set point  
2. After area is made non-hazardous, proceed to remove the square  
cover to reveal the snap-switch(es).  
3. Connect test light to (COM) and (N.C.) terminals. The light  
should turn “ON”. Gradually increase the pressure until the light  
turns“OFF. 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.  
Switch Trip Point  
Adjustment Cover  
or Round Cover  
To Reset for Falling Pressure  
Follow step 1 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.  
Murphy de México, S.A. de C.V.  
Frank W. Murphy, Ltd.  
®
FRANK W.  
Blvd. Antonio Rocha Cordero 300, Fracción del Aguaje  
San Luis Potosí, S.L.P.; México 78384  
tel. +52-48-206264 fax +52-48-206336  
Church Rd.; Laverstock, Salisbury SP1 1QZ; U.K.  
tel. +44 1722 410055 fax +44 1722 410088 tlx 477088  
MFR.  
Since 1939  
Frank W. Murphy Manufacturer  
P.O. Box 470248; Tulsa, Oklahoma 74147; USA  
tel. (918) 627-3550 fax (918) 664-6146  
Frank W. Murphy Pte., Ltd.  
Murphy Switch of California  
26 Siglap Drive; Republic of Singapore 456153  
tel. +65 241-3166 fax +65 241-8382  
Murphek Pty., Ltd.  
1620 Hume Highway; Campbellfield, Vic 3061; Australia  
tel. +61 3 9358-5555 fax +61 3 9358-5558  
P.O. Box 900788; Palmdale, California 93590; USA  
tel. (805) 272-4700 fax (805) 947-7570  
Frank W. Murphy France  
tel. +33 1 30 762626 fax +33 1 30 763989  
Frank W. Murphy Southern Division  
P.O. Box 1819; Rosenberg, Texas 77471; USA  
tel. (281) 342-0297 fax (281) 341-6006  
Printed in U.S.A.  
4
 

Miele Washer W2203 User Manual
MTD Lawn Mower 111 080R000 THRU 111 089R000 User Manual
MTD Log Splitter 249 620 003 User Manual
Nokia Cell Phone 22 User Manual
Nortel Networks Telephone NN10033 111 User Manual
Numark Industries Musical Toy Instrument M2 User Manual
NuTone Door LA 156PR User Manual
Omega Engineering Modem LDM30 User Manual
Onkyo Stereo Receiver TX SR508 User Manual
Panasonic Bathroom Aids ERGN30K User Manual