Murphy Series LM300 LM301 LM302 LM303 LM304 LM305, Warranty, Switch Wiring Diagrams, High/Low N.C

Models: Series LM300

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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

Green

Black

Normal

Yellow

Red

Low

FloatYellow

Green

Black

High

Normal

Low

High

NormalBlue

Red

Low

Green

High

Normal

Brown

Low

 

High

 

Normal Orange

Yellow

Low

 

Green

Normal

Low

Black

Low-Low

Normal

Blue

Low

Red

Low-Low

Green

Brown

Normal

Low

Low-Low

Normal

Orange

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 a switch is capable of activating approximately 3/8 in. (10 mm) from the top of the high zone and 3/8 in. (10 mm) from the bottom of the low zone. The dial in Figure 9 shows that if level continues to drop into the low-low zone, a shutdown will occur.

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 compensate for these conditions.

3/8 in.

(10 mm)

3/4 in.

(19 mm)

3/4 in.

(19 mm)

3/8 in.

(10 mm)

Figure 8: LM302/LM303

High Zone Shutdown or Alarm

Normal Operating Range

Low Zone Shutdown or Alarm

3/4 in.

(19 mm)

3/8 in.

(10 mm)

Normal

 

Normal

 

Operating Range

Operating Range

3/4 in.

 

 

 

Low Zone

(19 mm)

Low Zone Alarm

 

Low-Low Zone Shutdown

Shutdown or Alarm

 

 

 

 

3/8 in.

1/4 in.

 

(10 mm)

(6 mm)

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

FW Murphy

P.O. Box 470248

Tulsa, Oklahoma 74147 USA +1 918 317 4100

fax +1 918 317 4266 e-mailsales@fwmurphy.com www.fwmurphy.com

CONTROL SYSTEMS & SERVICES DIVISION P.O. Box 1819; Rosenberg, Texas 77471; USA +1 281 633 4500 fax +1 281 633 4588 e-mail sales@fwmurphy.com

MURPHY DE MEXICO, S.A. DE C.V.

Blvd. Antonio Rocha Cordero 300, Fracción del Aguaje San Luis Potosí, S.L.P.; México 78384

+52 444 8206264 fax +52 444 8206336 Villahermosa Office +52 993 3162117 e-mailventas@murphymex.com.mx www.murphymex.com.mx

FRANK W. MURPHY, LTD.

Church Rd.; Laverstock, Salisbury SP1 1QZ; U.K. +44 1722 410055 fax +44 1722 410088 e-mailsales@fwmurphy.co.uk www.fwmurphy.co.uk

MURPHY SWITCH OF CALIFORNIA

41343 12th Street West

Palmdale, California 93551-1442; USA

+1 661 272 4700 fax +1 661 947 7570 e-mailsales@murphyswitch.com www.murphyswitch.com

MACQUARRIE CORPORATION 1620 Hume Highway Campbellfield, Vic 3061; Australia

+61 3 9358 5555 fax +61 3 9358 5558 e-mailmurphy@macquarrie.com.au

 

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GISTER

 

 

 

 

 

 

USA–ISO 9001:2000 FM 28221

UK–ISO 9001:2000 FM 29422

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

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Murphy Series LM300 installation instructions LM301 LM302 LM303 LM304 LM305, Warranty, Switch Wiring Diagrams, High/Low N.C

Series LM300 specifications

The Murphy Series LM300 is an advanced line of electronic monitoring and control devices, specifically designed for use in industrial and commercial applications. Built to enhance performance and reliability, the LM300 series is an embodiment of modern technology, offering a wide array of features that cater to the operational needs of various sectors.

One of the standout features of the LM300 series is its robust monitoring capabilities. The device is equipped with a high-resolution LCD display that provides real-time data on engine parameters, including temperature, pressure, and RPM. This allows users to gain crucial insights into the performance of their equipment, enabling proactive measures to prevent potential failures and enhance efficiency.

Another key characteristic of the LM300 is its versatile communication options. The series supports multiple protocols, including Modbus and CANbus, allowing for seamless integration with various automation systems. This adaptability ensures that the LM300 can easily fit into existing infrastructures, providing users with greater flexibility and ease of use.

The LM300 series also excels in data logging and alarm functions. It offers extensive data logging capabilities, enabling the collection of historical performance data. Users can set customizable alarms for critical parameters, ensuring that they are promptly alerted to any anomalies that may indicate a malfunction. This feature is particularly valuable in preventing costly downtimes by enabling timely interventions.

Durability and reliability are central to the design of the LM300 series. The devices are built with rugged housings that can withstand harsh environmental conditions, making them ideal for outdoor and industrial applications. Furthermore, the series is tested to meet stringent industry standards, ensuring that customers can rely on the LM300 for consistent performance over time.

Additionally, the LM300 series incorporates advanced diagnostic features that assist in troubleshooting and maintenance. The ability to access diagnostic data directly on the interface simplifies the maintenance process, allowing technicians to quickly identify issues and implement effective solutions.

In summary, the Murphy Series LM300 stands out as a top-tier choice for electronic monitoring and control in challenging environments. With its comprehensive monitoring features, robust communication capabilities, extensive data logging, and high durability, it provides users with the tools necessary to optimize performance and enhance operational efficiency. The LM300 is an exemplary solution for industries looking to leverage technology for improved equipment management and reliability.