Murphy M5081FS User manual

M2582, M5081, and M5180 Series
Electromechanical and Pneumatic, Fuel Gas Shut-
off Valves Installation and Operation Instructions
M2582 and M5081Series
Tripping Power From Engine Ignition System or Battery
(Models available for magneto, CD ignition or 12/24 V battery)
These fuel shut-off valves are semi-automatic devices for shutdown of
natural gas fueled engines. The standard valve opens by manual
operation of the reset handle. A latch in the upper body of the valve will
set and hold the valve open. At this point no electric power is used.
The electromagnetic coil is de-energized, the snap-switch(es) is SET.
If a SWICHGAGE®contact closes, a circuit is completed from power
through the snap-switch and coil. Now energized, the electromagnet
trips the latch, (latch can be tripped manually), the valve closes, and the
snap-switch resets. Power switches from the coil circuit to your choice
of an open line, an electrical ground, or an alarm. After tripping, the
vent seal opens, and on the M50 models, the open/close indicator (green
button) retracts to indicate that the valve is closed.
Valve body is sandcast aluminum. Optional cast steel for M5081 models.
M2582-P and M5180-P
MURPHY-NUMATIC™Pneumatic Version for Pressure
The M2582-P and M5180 pneumatically controlled valves can operate
from pressure, and are designed to open and close automatically or semi-
automatically (the supply can be air, oil or gas).
NOTE: If using oil as a pressure source, use a lightweight oil.
These valves will open on rising control pressure and close on
decreasing control pressure. M2582-P and M5180-P automatically open
at 2 psi (14 kPa) [0.14 bar] and fully open at 3 psi (21 kPa) [0.21 bar].
All models include a built-in lever to aid in opening the valve manually.
The M2582-P can be manually opened against inlet pressure of 80 psi
(552 kPa) [5.52 bar]. The M5180-P valve can be opened against inlet
pressure of 100 psi (689 kPa) [6.89 bar].
Standard models include an escape vent for gas trapped forward in the
line after shut-off.
M5081FS
Normally Energized Circuit
The M5081FS is manually opened, electrically latched open and tripped
by interrupting the coil power circuit.
Magnetic Switch Adapter
As ignition systems wear from usage, their power output becomes less
and less. Ignition may not have the capacity to reliably trip the Fuel
Valve. Therefore, the use of a Magnetic Switch Adapter for CD
ignition systems is recommended. The Magnetic Switch Adapter is a
device that stores energy from the CD ignition to trip the Fuel Valve.
Three models are available:
65700053 (was 65020126): For use with negative ground ignitions
up to 240 VDC.
65700054 (was 65020127): For use with positive ground ignitions
up to 450 VDC.
65700055 (was 65020155): For use with negative ground ignitions
up to 450 VDC.
100 ohm, 2 watt Resistor
For Capacitor Discharge Ignitions that are specified to be grounded when
the valve closes, and a Magnetic Switch Adapter is in use. The resistor
must be connected in the system to prevent damage to the snap-switches
in the fuel shut-off valve (see typical wiring diagrams).
Diode Package
The Murphy diode package (65010065) is designed to allow the fuel shut-
off valve to be used with dual Magneto Ignition systems.
NOTE: All aluminum versions of the M5081 Series Fuel Valve carry
Canadian Registartion Number OC1476.2.
*M5081 model is CSA approved for Class I, Division 1, Groups C and D.
See Specifications on page 12.
GENERAL INFORMATION
Please read the following instructions 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 with NEC and local codes.
M-7980N
Revised 11-02
Section 55
(00-02-0206)
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.
Model M5081
Approved *
Installation M-7980N page 1 of 12
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VALVE CUT-OUT
A. Main Stem
B. Pressure Disc/seal (in run/open)
C. Pressure Disc/seal (in trip/closed)
D. Vent Seal Gland
E. Reset Knob (latches valve open)
F. Manual Trip Knob (not available for M5081FS)
G. Indicator Button (out with valve open)
H. Pipe Plug
A
B
D
E
F
Understanding the Basic Operation
of the Fuel Shut-off Valve
The valve below is shown in the run (open) position.
Pressure is equalized, seat (B) is open, allowing
the fuel to flow. When valve is in the tripped position
(closed), seat closes (C).
The vent (D) opens to relieve trapped downstream fuel
to vent to a non-hazardous area.
C
NOTE: If the vent-after-tripping feature is not used,
remove O-ring (D), to avoid condensation accumulation
that can hamper trip action.
Be sure to replace Pipe Plug (H) and to clean vent
periodically.
Vent to relieve trapped fuel
outside the hazardous area.
Terminal Block is
within this case.
G
Pipe Plug (remove to
install vent tube).
TYPICAL MODEL (M5081) SHOWN
H
FLOW CHARACTERISTICS
250
[7.08]
500
[14.16]
1000
[28.32]
1250
[35.40]
1500
[42.48]
1750
[4956]
2000
[56.64]
2250
[63.72]
2500
[70.80]
3000
[84.96]
2750
[77.88]
750
[21.24]
0
1.0
[25.4]
2.0
[50.8]
3.0
[76.2]
4.0
[101.6]
5.0
[127.0]
6.0
[152.4]
7.0
[177.8]
8.0
[203.2]
9.0
[228.6]
10.0
[254.0]
4 oz. (0.11 kg.)
10 oz. (0.28 kg.)
5 psig (34 kPa) [0.34 bar]
10 psig (69 kPa) [0.69 bar]
20 psig (138 kPa) [1.38 bar]
30 psig (207 kPa) [2.07 bar]
4 oz. (0.11 kg.)
10 oz. (0.28 kg.)
5 psig (34 kPa) [0.34 bar]
10 psig (69 kPa) [0.69 bar]
20 psig (138 kPa) [1.38 bar]
30 psig (207 kPa) [2.07 bar]
4 oz. (.11 kg.)
4 oz. (.11 kg.)
10 oz. (.28 kg.)
10 psig (69 kPa) [.69 bar]
20 psig (138 kPa) [1.38 bar]
30 psig (207 kPa) [2.07 bar]
500
[14.16]
1000
[28.32]
2000
[56.64]
2500
[70.80]
3000
[84.96]
3500
[99.12]
4000
[113.28]
4500
[127.44]
5000
[141.60]
1500
[42.48]
0
1.0
[25.4]
2.0
[50.8]
3.0
[76.2]
4 oz. (.11 kg.)
10 oz. (.28 kg.)
10 psig (69 kPa) [.69 bar]
20 psig (138 kPa) [1.38 bar]
30 psig (207 kPa) [2.07 bar]
M2582 Series
M5081 and
M5180 Series
Inches water column (∆p) drop across valve. Millimeters water column in brackets [ ].
Standard cubic feet per hour. Cubic meters per hour in brackets [ ].
Inches water column (∆p) drop across valve. Millimeters water column in brackets [ ].
Standard cubic feet per hour. Cubic meters per hour in brackets [ ].
Installation M-7980N page 2 of 12
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DIMENSIONS
7-5/16 in.
(186 mm)
Reset Knob
1 NPT
(2 places)
3-3/32 in.
(79 mm)
Manual Trip
Knob
1/2 NPT Conduit
Connection
5-1/2 in. (140 mm)
1/4 NPT
Vent and Plug
6-9/16 in.
(167 mm)
Breather/Vent
1/16 in. (2 mm)
1 NPT
(2 places)
3-3/32 in.
(79 mm)
1/4 in. (6 mm) tube connection; control
pressure 3 psi (21 kPa) [0.21 bar] minimum,
75 psi (517 kPa) [5.17 bar] maximum.
5-1/2 in. (140 mm)
1/4 NPT
Vent and
Plug
Latch Arm (see NOTE)
NOTE: Thumb operated opening latch (2.5 psi [17 kPa]
[0.17 bar] required to release cocking latch)
9-3/8 in. (238 mm)
4-3/8 in.
(111 mm)
Vent and Plug
1/2 NPT
2 NPT
(2 places)
4-1/4 in.
(108 mm)
10-7/16 in. (265 mm)
Breather Vent
(see NOTE 1)
NOTE 1: Control pressure connection fitting and breather vent fitting can be swapped to convert to vacuum control.
NOTE 2: Thumb operated opening latch (2.5 psi [17 kPa] [0.17 bar] required to release cocking latch).
6-1/8 in.
(156 mm)
1/4 in. (6 mm)
connection;
control pressure
3 psi (21 kPa)
[0.21 bar] minimum,
80 psi (552 kPa)
[5.52 bar] maximum
(see NOTE 1)
Latch Arm (see NOTE 2)
M2582
M5180-P
Magnetic Switch Adapters
65700053 (was 65020126); 65700054 (was 65020127); 65700055 (was 65020155)
M2582-P
CAUTION: THE ARROW ON THE SIDE OF THE FUEL VALVE MUST POINT TO THE CORRECT DIRECTION OF THE
FLOW, FROM FUEL SOURCE TO THE ENGINE. APPLY PIPE DOPE ONL
YTO FUEL PIPE, NOTTO THE FUEL VALVE.
2-7/16 in.
(62 mm)
2-5/8 in. (67 mm)
1-15/32 in.
(37 mm)
31/32 in.
(25 mm)
1-23/32 in.
(44 mm)
2-5/16 in. (59 mm)
15/32 in.
(12 mm)
Panel Mount screws
10-24 N.C. x
5/16 in. (8 mm) long
Terminal screws
8-32 N.C. x
1/4 in. (6 mm) long
GND ALT1 ALT2 SW
3/8 in.
(10 mm)
Installation M-7980N page 3 of 12
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9-3/8 in. (238 mm)
3-7/16 in.
(87 mm)
1-3/8 in. (35 mm)
10-5/16 in.
(262 mm)
4-1/16 in.
(103 mm)
7-3/4 in. (197 mm)
Inlet
Breather
Manual Trip Knob
(M5081 only)
Vent and Plug
1/2 NPT
2 NPT
(2 places)
3 in. (76 mm)
Reset Knob
1/2 NPT Conduit
Connection (2 plcs.)
Indicator
Button
DIMENSIONS continued
14-25/64 to 14-29/64 in.
(366/367 mm)
3/4 in. (19 mm) dia.
(4 places) each end
equally spaced on a
15/32 in. (121 mm) b.c.
(bolt circle)
45°
3-5/8 in.
(92 mm) dia.
2 in. (51 mm) dia. 2 places
150# RF (raised face) pipe flange
M5081 and M5081FS
M5081-3 Steel Flanged Option
CAUTION: THE ARROW ON THE SIDE OF THE FUEL VALVE MUST POINT TO THE CORRECT DIRECTION OF THE
FLOW, FROM FUEL SOURCE TO THE ENGINE. APPLY PIPE DOPE ONL
YTO FUEL PIPE, NOTTO THE FUEL VALVE.
Installation M-7980N page 4 of 12
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INSTALLATION
Connecting the Fuel Shut-off Valve
1. Before connecting the unit, apply pipe dope to plumbing male threads
that will be inserted into the valve. Do not apply pipe dope to the valve.
2. Make sure that the arrow on the side of the valve indicates the correct
direction of the flow.
3. Fuel shut-off valves can be installed in all three planes. However,
mounting the valve horizontally (with vent pointing down) is
recommended. Do not install valve with top down. (Refer to Figure 1.)
4. Hold valve in position, (use a tool on valve wrench flats) and tighten
plumbing into inlet and outlet ends. (Refer to dimensions on pages 3-4.)
5. To mount flanged models, follow the appropriate installation codes
and ordinances for the application. (For dimensions see page 4.)
6. A vent line (to allow gas trapped forward between fuel valve and the
carburetor to escape) should be attached to the vent connection at the
bottom of the valve housing. Remove the plug and install the line.
(Refer to Figure 1.)
Connecting Pneumatic Models
M2582-P and M5180-P
1. Repeat the steps above (1 thru 5), and observe the necessary cautions.
2. A lever/arm (handle) and a cocking latch are provided to allow manual
opening of the valve. The thumb-operated latch can be locked in place
to hold the lever/arm latched. The cocking latch will be released when
pilot pressure reaches 2.5 psi (17 kPa) [0.17 bar]). M2582-P and
M5180-P automatically open at 2 psi (14 kPa) [0.14 bar], and fully
open at 3 psi (21 kPa) [0.21 bar]. See Specifications, page 12 for
maximum control pressure.
3. If vacuum control is desired, swap the Control Pressure connection
fitting and the Breather Vent fitting on your M5180-P model (see Fig. 2).
WARNING: STOP THE ENGINE AND DISCONNECT ALL ELECTRICAL POWER BEFORE BEGINNING INSTALLATION. BEGIN THE
INSTALLATION BY SECURING AREA OF ANY HAZARDOUS CONDITIONS. SHUTOFF THE FUEL GAS SUPPLY. FOR HAZARDOUS
APPLICATIONS REFER TO NATIONAL ELECTRICAL CODE SPECIFICATIONS.
Remove plug and attach vent line.
Route to non-hazardous area.
Master Regulator
(High pressure) Bypass
Regulator
Fuel Shut-off Valve
Carburetor
FUEL FLOW
Fuel
Filter
Wrench Flats
Figure 1
Physical Location and Plumbing (typical)
Figure 2
Pull the lever up, and press the latch
down into ridge with thumb.
CAUTION: DO NOT TWIST THE VALVE BODY HOUSING.
Level Arm (Handle)
Thumb-operated
Cocking Latch
Control Pressure
Connection
Breather
Vent
CAUTION: BE SURE PNEUMATIC SOURCE
RELEASES THE MECHANICAL LATCH WHEN RUNNING.
Installation M-7980N page 5 of 12
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7265 19384
Valve
Coil
Ground
Jumper
Optional
Resistor
(See Note)
10
Jumper
Disconnect
Switches
Ignition 1 Ignition 2
7265 19384
Valve
Coil
(Note)
Ground
10
Switch 2 Switch 1
White
Black
Red
Ground
Optional
Resistor
(Note)
Internal Wiring
for M2582
M5081 Internal
Wiring
M2582 Internal Wiring
Wiring shown in normal mode of operation (seat open). The 20 AWG
(0.75 mm2) wire is color coded to the coil:
For CD ignitions: White and Orange
For Magneto ignitions: White and Green
For Battery: White and Blue
Conduit Installation
Install a 1/2 NPT conduit from the M2582 conduit connection to the
power source. See M2582 Dimensions (page 3) for location.
For wiring the M2582 fuel valve to Solid-State TATTLETALE®
annunciators, refer to pages 9, 10, and 11.
M5081 Internal Wiring
Wiring shown in normal mode of operation (seat open). The 18 AWG
(1.0 mm2) wire is color coded to the coil:
For CD Ignitions: White and Orange
For Magneto Ignitions: White and Green
For Battery: White and Blue
Conduit Installation
Install a 1/2 NPT conduit from the M5081 conduit connection to the
power source. Refer to Dimensions (on page 4) for location.
For typical wiring of the M5081 models refer to pages 7 and 8.
For wiring the M5081 fuel valves to Solid-State TATTLETALE®
annunciators, refer to pages 9, 10, and 11.
M5081FS Internal Wiring
For typical Wiring refer to page 8.
For wiring the M5081FS to MARK IV 12/24 refer to page 10.
Magnetic Switch Adapters for Use with
Capacitor Discharge Ignitions
Connect the Magnetic Switch Adapter between the fuel Valve
terminal 1 and the CD Ignition. See wiring diagrams (pages 7 and 11).
WARNING: PERFORM THE WIRING OPERATION WITH THE POWER SOURCE “OFF” AND THE AREA MADE NON-HAZARDOUS.
MAKE SURE THE VOLTAGE AND CURRENT REQUIREMENTS ARE WITHIN THE FUEL SHUT-OFF VALVE RATINGS. HARD CONDUIT
WITH APPROVED SEALS IS REQUIRED BY THE NEC FOR HAZARDOUS AREA INSTALLATIONS.
NOTE:
For grounding the ignition (CD models only)
through the fuel valve snap-switch, use a
Magnetic Switch Adapter (see Magnetic
Switch Adapter, below) and install a 100
ohm; 2 watt resistor (included on page 11).
NOTE: For grounding the ignition (CD models only) through the fuel
valve snap-switches, use a Magnetic Switch Adapter, see Magnetic
Switch Adapter, below and the “TO CLOSE THE FUEL VALVE and
GROUND THE IGNITION” attachment, and install a 100 ohm; 2
watt resistor (included with your attachment).
NOTE: Wiring shown in normal mode of operation (seat open). The 18 AWG (1.0 mm2)
wire is red color for both options: 12 VDC and 24 VDC.
WIRING INFORMATION
GND ALT
1 SW
+
ALT
2
IN4007
Negative ground
Magnetic Switch Adapter shown
65700053 (was 65020126): For use with
negative ground ignitions up to 240 VDC.
65700054 (was 65020127): For use with
positive ground ignitions up to 450 VDC.
65700055 (was 65020155): For use with
negative ground ignitions up to 450 VDC.
White FV–
FV+
Orange (IGN)
White FV–
FV+
Orange (IGN)
Installation M-7980N page 6 of 12
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Start-run
timer
CD ignition
To additional
TATTLETALE
®
Additional
CD ignition
7265 1938 4
Ground
100 ohm, 2 watt
Resistor (Notes 3 and 4)
10
M5081-C
CD Ignition Models Magnetic
Switch
Adapter
GND ALT1 ALT2 SW
Terminal Block
NOTE 1: To CLOSE FUEL VALVE–NOT GROUNDING THE IGNITION (Single CD Ignition Systems) Remove the factory-installed jumper on terminals 6-5.
Do NOT ground terminal 6.
NOTE 3: To CLOSE FUEL VALVE and GROUND THE IGNITION (Single CD Ignition Systems) Remove the jumper on terminals 6-5.
Connect a 100 ohm, 2 watt resistor between valve terminals 1-2. Ground terminal 6.
NOTE 2: To CLOSE FUEL VALVE–NOT GROUNDING THE IGNITIONS (Dual CD Ignition Systems) Remove the jumper on terminals 6-5.
Connect second ignition to Magnetic Switch Adapter terminal ALT2.
NOTE 4: To CLOSE FUEL VALVE and GROUND THE IGNITION (Dual CD Ignition Systems) Remove the jumper on terminals 6-5. Connect a 100 ohm,
2 watt resistor between valve terminals 1-2. Ground terminal 6. Connect second i
g
nition to Ma
g
netic Switch Adapter terminal ALT2.
Jumpers
6 2 3 5
4
1
MS2100
6 2 3 5
4
1
MS2100
TYPICAL WIRING for M5081-C (CD IGNITION MODELS)
Start-run
timer
To additional
TATTLETALE
®
7265 1938 4
Ground
10
+--
DC Power
source
M5081-B
Battery Models
Terminal Block
Jumpers
MS2110
IN4005 Diode
for flyback protection
**
6 2 3 5 1 4
MS2110
6 2 3 5 1 4
TYPICAL WIRING for M5081-B (BATTERY IGNITION MODELS)
Installation M-7980N page 7 of 12
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TYPICAL WIRING for M5081-A (MAGNETO IGNITION MODELS)
MS2120 MS2120
Start-run
timer
Magneto
To additional
TATTLETALE
®
Additional
Magneto
7265 1938 4
Ground
10
65010065
Diode Package
(See Notes 2/4)
M5081-A
Magneto Ignition Models
NOTE 1: To CLOSE FUEL VALVE–NOT GROUNDING THE IGNITION (Single Magneto Systems) Remove the factory-installed jumper on terminals 6-5.
Do NOT ground terminal 5.
NOTE 3: To CLOSE FUEL VALVE and GROUND THE IGNITION (Single Magneto Systems) The factory-installed jumpers (6-5 and 9-8) must be in place.
Add ground wire to terminal 5.
Terminal Block
NOTE 2: To CLOSE FUEL VALVE–NOT GROUNDING THE IGNITIONS (Dual Magneto Systems) Remove the factory-installed jumpers on terminals 6-5 and 9-8.
Add 65010065 diode package as shown. Do NOT ground terminals.
NOTE 4: To CLOSE FUEL VALVE and GROUND THE IGNITION (Dual Magneto Systems) Remove the jumper on terminals 9-8.
Add 65010065 diode packa
g
e as shown. Add
g
round wire to terminal 5.
Jumpers
6 2 3 5 1 4 6 2 3 5 1 4
TYPICAL WIRING for M5081FS (NORMALLY ENERGIZED MODELS)
Start-run timer
7265 1938 4
Ground
10
+--
DC Power
source
M5081FS
12 or 24 VDC Models
Terminal Block
MS2110 MS2110
Ground
IN4005 Diode
for flyback protection
**
*
*
6 2 3 5 1 4 6 2 3 5 1 4
Installation M-7980N page 8 of 12
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IGN 1
NO
C
NC
Relay
Contacts
FV(+)
GND
M2582 Fuel Valve
White
Black
Red
Ground
LCDT-PS-CD-N
*
Relay contacts rated: 3 A, 30 VDC, 4 A, 125/250 VAC
FV(-)*
+
–
IGN 1
F/V+
F/V-
GRD
MARK IV-N
terminal block
M2582 Fuel Valve
White
Black
Red
Ground
+
–
M2582 Fuel Valve
White
Black
Red
Ground
LCDT-PS-CD (R)-P
IGN 1
FV(-)
NO
C
NC
Relay
Contacts
FV(+)
GND
Relay contacts rated: 3 A, 30 VDC, 4 A, 125/250 VAC
+–
TYPICAL WIRING to SOLID-STATE TATTLETALE®Annunciators
M2582-C to LCDT-PS-CD (R)-P (positive ground)
M2582-C to LCDT-PS-CD-N (negative ground)
M2582-C to MARK IV-N (negative ground)
WARNING: PERFORM THE WIRING OPERATION WITH THE POWER SOURCE “OFF” AND THE AREA MADE NON-
HAZARDOUS. MAKE SURE THE VOLTAGE AND CURRENT REQUIREMENTS ARE WITHIN THE FUEL SHUT-OFF VALVE RATINGS.
HARD CONDUIT WITH APPROVED SEALS IS REQUIRED BY THE NEC FOR HAZARDOUS AREA INSTALLATIONS.
M5081-C to LCDT-PS-CD (R)-P (positive ground)
FV(-)*
GND
IGN 1
FV
NO
C
NC
Relay
Contacts
jumperjumper
M5081 Terminal block
LCDT-PS-CD (R)-P
Terminal block
7265 1938410
*
FV(-) FET output rated: 0.5 A @ 250 VDC max.
Relay contacts rated: 3 A, 30 VDC, 4 A, 125/250 VAC
+–
M5081-C to LCDT-PS-CD-N (negative ground)
FV(+)
GND
IGN 1
NO
C
NC
Relay
Contacts
jumperjumper
M5081 Terminal block
LCDT-PS-CD-N
Terminal block
7265 1938410
FV(-)*
*
FV(-) FET output rated: 0.5 A @ 250 VDC max.
Relay contacts rated: 3 A, 30 VDC, 4 A, 125/250 VAC
+
–
M5081-C to MARK IV-N (negative ground)
IGN 1
F/V+ F/V-
GRD
MARK IV-N
terminal block
jumperjumper
M5081 Terminal block
7265 1938 410
MARK IV has FET outputs rated: 0.5 A @ 250 VDC max.
*
*
Installation M-7980N page 9 of 12
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TYPICAL WIRING to SOLID-STATE TATTLETALE®Annunciators
WARNING: PERFORM THE WIRING OPERATION WITH THE POWER SOURCE “OFF” AND THE AREA MADE NON-
HAZARDOUS. MAKE SURE THE VOLTAGE AND CURRENT REQUIREMENTS ARE WITHIN THE FUEL SHUT-OFF VALVE RATINGS.
HARD CONDUIT WITH APPROVED SEALS IS REQUIRED BY THE NEC FOR HAZARDOUS AREA INSTALLATIONS.
M5081-B to MARK IV-12/24
12/24V
SD
F/V
GRD
MARK IV-12/24
terminal block
7265 1938410
M5081FS Terminal Block
+--
DC Power
source
MARK IV has FET outputs rated: 0.5 A @ 250 VDC max.
1
1
IN4005 Diode
for flyback protection
*
*
12/24V
S/D
F/V
GRD
MARK IV-12/24
terminal block
jumperjumper
M5081-B
7265 1938 410
K1 and K2:
External
Relay(s)
+--
DC Power
source
K1K2
MARK IV has FET outputs rated: 0.5 A @ 250 VDC max.
Remove shunt jumper E2 for ignition ground time delay.
1
1
IN4005 Diode
for flyback protection
*
*
*
K1
–
+
*
K2
–
+
M5081FS to MARK IV-12/24
ALM
12/24
FV
S/D
GRD
MARK III-12/24
terminal block
Auxiliary Relay
Auxiliary or
Shutdown Relay
7265 1938 410
M5081FS Terminal Block
+--
12/24 VDC
Power source
MARK III has FET outputs rated:
0.5 A @ 250 V max.
1
Auxiliary Relays must be
hermetically-sealed, third party
certified for use in Class I,
Division 2, Gps. C & D areas.
2
1
2
2
K1
K2 +–
+–
*
*
*
IN4005 Diode for flyback protection
*
+FV
IGN
-FV
ALM
GRD
Alarm Relay must be
hermetically-sealed, third party
certified for use in Class I,
Division 2, Gps. C & D areas.
MARK III-N
terminal block
jumperjumper
M5081 Terminal block
7265 1938 410
MARK III has FET outputs rated:
0.5 A @ 250 V max.
Alarm Relay
Ignition
90-250 Vdc
K1 +––
Power
Supply
††
†
††
†
*
IN4005 Diode for flyback protection
*
M5081FS to MARK III-12/24
M5081-C to MARK III-N
IGN
GRD
FV+
FV-
ALR
NA
NA
NA
jumperjumper
M5081 Terminal block
7265 1938 410
IGN
GRD
FV+
FV-
ALR
NA
NA
NA
M2582 Fuel Valve
White
Black
Red
+
–
M5081-C to TTDJ-IGN-(T)
M2582-C to TTDJ-IGN-(T)
Installation M-7980N page 10 of 12
1-800-548-1191 - http://www.partdeal.com - [email protected]

TYPICAL WIRING to SOLID-STATE TATTLETALE®Annunciators continued
WARNING: PERFORM THE WIRING OPERATION WITH THE POWER SOURCE “OFF” AND THE AREA MADE NON-
HAZARDOUS. MAKE SURE THE VOLTAGE AND CURRENT REQUIREMENTS ARE WITHIN THE FUEL SHUT-OFF VALVE RATINGS.
HARD CONDUIT WITH APPROVED SEALS IS REQUIRED BY THE NEC FOR HAZARDOUS AREA INSTALLATIONS.
SD
GRD
NA
FV
ALR
MPU
GRD
10-32VDC
K1
K2
jumperjumper
M5081 Terminal block
7265 1938 410
K1 and K2 are hermetically Sealed
auxiliary relays, third party certified for
use in Class I, Div. 2, Gps. C & D areas.
To 12 or 24 VDC
power supply
* 1N4005 diode for flyback protection.
1
1
*
SD
GRD
NA
FV
ALR
MPU
GRD
10-32VDC
12-24 VDC
Power supply
K1
K2
IGNITION RELAY
–+
–+
*
*
K1 and K2 are hermetically Sealed
auxiliary relays, third party certified for
use in Class I, Div. 2, Gps. C & D areas.
* 1N4005 diode for flyback protection
.
1
1
1
M2582 Fuel Valve
White
Black
Red
+
–
Magnetic
Switch
Adapter
GND ALT1 ALT2 SW
K2
K2 is hermetically sealed auxiliary relay, third party
certified for use in Class I, Div. 2, Gps. C & D areas.
1
1
K2
+
–
Magnetic
Switch
Adapter
GND ALT1 ALT2 SW
jumperjumper
M5081 Terminal block
7265 1938 410
K2 is hermetically sealed auxiliary relay, third party
certified for use in Class I, Div. 2, Gps. C & D areas.
1
1
SD
GRD
NA
FV
ALR
MPU
GRD
10-32VDC
7265 1938 410
M5081FS Terminal Block
To 12 or 24 VDC
power supply
* 1N4005 diode for flyback protection.
*
SD
GRD
NA
FV
ALR
MPU
GRD
10-32VDC
K1
K2
M2582 Fuel Valve
White
Black
Red
To 12 or 24 VDC
power supply
K1 and K2 are hermetically Sealed
auxiliary relays, third party certified for
use in Class I, Div. 2, Gps. C & D areas.
1
1
(A) M5081-B to TTDJ-DC-(T)
TTDJ-DC-(T) to Relays
Connections Shown for Use with
Diagrams (A), (B), (C), and (D) on this page.
(C) M2582-C w/Magnetic
Switch Adaptor to CD Ignition
(D) M5081-C w/Magnetic
Switch Adaptor to CD Ignition
M5081FS to TTDJ-DC-(T)
(B) M2582-B to TTDJ-DC-(T)
Installation M-7980N page 11 of 12
1-800-548-1191 - http://www.partdeal.com - [email protected]

CONTROL SYSTEMS & SERVICES DIVISION
P.O. Box 1819; Rosenberg, Texas 77471; USA
[phone] fax [phone]
e-mail [e-mail]
MURPHY DE MEXICO, S.A. DE C.V.
Blvd. Antonio Rocha Cordero 300, Fracción del Aguaje
San Luis Potosí, S.L.P.; México 78384
[phone] fax [phone]
Villahermosa Office [phone]
e-mail [email protected]
www.murphymex.com.mx
FRANK W. MURPHY, LTD.
Church Rd.; Laverstock, Salisbury SP1 1QZ; U.K.
[phone] fax [phone]
e-mail [e-mail]
www.fwmurphy.co.uk
MURPHY SWITCH OF CALIFORNIA
41343 12th Street West
Palmdale, California 93551-1442; USA
[phone] fax [phone]
e-mail [email protected]
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.
MACQUARRIE CORPORATION
1620 Hume Highway
Campbellfield, Vic 3061; Australia
[phone] fax [phone]
e-mail [email protected]
FW Murphy
P.O. Box 470248
Tulsa, Oklahoma 74147 USA
[phone]
fax [phone]
e-mail [e-mail]
www.fwmurphy.com
R
E
G
I
S
T
E
R
E
D
USA–ISO 9001:2000 FM 28221
UK–ISO 9001:2000 FM 29422
Printed in U.S.A. 0966106
M2582 M5081 M5081FS
M5081FS Coil Assembly
12 VDC
24 VDC
Latch Block Assembly
Latch block assembly
Latch block switch and coil assembly
Latch block switch and mounting bracket assembly
Coil Assembly
Battery
CD Ignition
Magneto Ignition
55000128
55000129
55000094
------------
55000096
55000097 55000137 --------------- --------------- ---------------
55000102
------------
55000102
------------
5500148
------------
55000154
------------
55000095
------------
------------
55000074
------------
55000118
------------
------------
55000196
------------
------------
------------
------------
------------
------------
------------
------------
------------
------------
55000158
55000159
------------
------------
------------
------------
55000126
55000127
55000080
------------
------------
------------
------------
------------
------------
------------
------------
------------
SERVICE PARTS
M2582-P M5180-P
Handle and Latch Kit
Handle and latch kit
Handle kit
Manual DIsconnect Assembly
55000098 55000072 55000160 --------------- ---------------
Snap Switch Assembly
------------ 55000138 55000138 --------------- ---------------
Close/Open Indicator Assembly
55000093 55000075 55000135 55000147 55000135
Stem and Seat Kit
55000146 55000131 55000161 55000150 55000155
Top Works Complete Valve Less Body and Vent
55000143 55000132 55000132
65700053
65700053
------------ 65010065 ------------ ------------ ------------
65700054
65700054
65700055 65700055
55000143 55000132
Vent Bushing Assembly
------------ ------------ ------------ 55000184 55000153
Diaphragm Assembly
------------ ------------ ------------
------------
------------
------------
------------ ------------
------------ ------------
------------ ------------
00007908 55050420
Pilot Diaphragm
Single/Dual ign. – negative ground up to 240 VDC
Single/Dual ign. – positive ground up to 450 VDC
Single/Dual ign. – negative ground up to 450 VDC
Diode Package for Dual Magneto Ignitions
Magnetic Switch Adapter for CD Ignitions
SPECIFICATIONS
Valve Body: Sandcast aluminum, painted red (corrosion resistance);
Optional cast steel available for M5081 and M5081FS models only.
Valve Seat: Buna-N
Maximum Valve Inlet Pressure:
• M2582/M2582-P: 80 psi (552 kPa) [5.52 bar]
• M5081/M5081FS/ M5180-P: 100 psi (689 kPa) [6.89]
Maximum Control Pressure (Pneumatic Models):
• M2582-P: 75 psi (517 kPa) [5.17 bar]
• M5180-P: 80 psi (552 kPa) [5.52 bar]
Snap-switch: M2582: One SPDT, 5 A @ 480 VAC
M5081, and M5081FS: Two SPDT, 5 A @ 480 VAC
Wiring: M2582: Wire leads; M5081, and M5081FS: Terminal blocks
NOTE: All aluminum versions of the M5081 Series Fuel Valve carry
Canadian Registartion Number OC1476.2.
Coil Rating: Intermittent duty; coil type must match power source;
• CD ignition coil resistance: 72 Ω
CD ignition primary voltage: 1.38 to 3.8 A
• M5081FS: Energized to Run (continuous-duty coil) coil resistance:
12 V model: 33 Ω;
24 V model: 136 Ω
• Magneto ignition coil resistance: 0.5 Ω
Magneto primary voltage: 1 to 5 A
• Battery coil resistance : 7 Ω
12 or 24 VDC: 1.2 to 2.4 A
Laboratory Approval: CSA listed for Class I, Groups C and D
Hazardous Locations. 5 amps maximum; intermittent duty; models
M5081 and M5081-CD engine ignition powered, and model M5081-B, 12
or 24 VAC or VDC; switch contacts rated 5 A @ 480 VAC maximum.
Maximum pressure 100 psi (689 kPa) [6.89 bar].
Installation M-7980N page 12 of 12
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
1-800-548-1191 - http://www.partdeal.com - [email protected]