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
e-mail sales@fwmurphy.co.uk
MFR.
Since 1939
■ Frank W. Murphy Manufacturer
P.O. Box 470248; Tulsa, Oklahoma 74147; USA
tel. (918) 627-3550 fax (918) 664-6146
e-mail fwmurphy@ionet.net
■ Frank W. Murphy Pte., Ltd.
■ Murphy Switch of California
26 Siglap Drive; Republic of Singapore 456153
tel. +65 241-3166 fax +65 241-8382
e-mail fwmsales@fwmurphy.com.sg
■ 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
e-mail sales@murphyswitch.com
■ 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
e-mail murphysd@intertex.net
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