Introduction
This manual provides comprehensive instructions for the installation, operation, maintenance, and troubleshooting of the FW Murphy EGS21T-250-12 Temperature SWICHGAGE. This device is designed to monitor temperatures within a range of 0-250 degrees Fahrenheit and provide a switching output based on predefined temperature thresholds. Please read this manual thoroughly before installation and operation to ensure safe and proper use.
Safety Information
Always observe the following safety precautions:
- Disconnect all power sources before installation or maintenance.
- Ensure the operating voltage (12 VDC) matches the power supply.
- Installation should be performed by qualified personnel familiar with electrical and mechanical systems.
- Do not exceed the specified temperature range of 0-250°F.
- Protect the device from excessive vibration, moisture, and extreme temperatures outside its operating range.
- This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.
Product Overview
The FW Murphy EGS21T-250-12 is a robust temperature SWICHGAGE featuring a UV stabilized lens and a screw-on mounting clamp case. It provides accurate temperature readings and includes a normally open contact for switching applications.
The device is designed for panel mounting and utilizes screw terminals for secure electrical connections. Its compact dimensions make it suitable for various industrial and automotive applications.
Setup and Installation
Follow these steps for proper installation of the EGS21T-250-12 SWICHGAGE:
- Panel Preparation: Cut a suitable opening in the mounting panel for the gauge. Refer to the product dimensions (4 x 4 x 4 inches) for appropriate sizing.
- Mounting: Insert the SWICHGAGE into the prepared opening. Secure it using the screw-on mounting clamp case. Ensure the gauge is firmly seated and stable.
- Electrical Connections:
- Identify the screw terminals on the rear of the unit (refer to Figure 2).
- Connect the 12 VDC power supply to the appropriate terminals. Observe polarity.
- Connect the normally open contact to your control circuit as required.
- Ensure all connections are tight and secure to prevent intermittent operation or damage.
- Sensor Placement: Ensure the temperature sensing element (not explicitly shown but implied by "Temperature SWICHGAGE") is correctly positioned to accurately measure the desired temperature.
- Final Check: Before applying power, double-check all connections and mounting to ensure everything is correct and secure.
Operating Instructions
The EGS21T-250-12 Temperature SWICHGAGE operates automatically once properly installed and powered.
- Power On: Apply 12 VDC power to the unit. The gauge needle will indicate the current temperature.
- Temperature Monitoring: The gauge continuously monitors the temperature within its range of 0-250 degrees Fahrenheit.
- Switching Function: The internal switch (normally open contact) will change state when the monitored temperature reaches a factory-set or user-adjustable (if applicable, not specified here) threshold. This can be used to trigger alarms, shut down systems, or activate cooling mechanisms.
- Reading the Gauge: Read the temperature directly from the dial (Figure 1).
Maintenance
The FW Murphy EGS21T-250-12 SWICHGAGE is designed for minimal maintenance. However, periodic checks are recommended:
- Cleaning: Gently wipe the UV stabilized lens with a soft, damp cloth to remove dust or debris. Do not use abrasive cleaners or solvents.
- Connection Check: Periodically inspect electrical connections for tightness and signs of corrosion. Re-tighten screw terminals if necessary.
- Physical Inspection: Check the mounting and casing for any signs of damage or wear. Ensure the gauge remains securely mounted.
- Calibration: This unit is factory calibrated. If you suspect inaccurate readings, contact FW Murphy customer support for assistance. Do not attempt to recalibrate the unit yourself.
Troubleshooting
If you encounter issues with your EGS21T-250-12 SWICHGAGE, refer to the following table:
| Problem | Possible Cause | Solution |
|---|---|---|
| Gauge not responding / No reading | No power or incorrect wiring. | Verify 12 VDC power supply is connected correctly and active. Check all screw terminal connections for tightness. |
| Inaccurate temperature reading | Sensor improperly placed or damaged. Unit out of calibration. | Ensure the temperature sensor is correctly positioned and making good contact with the medium being measured. If problem persists, contact FW Murphy support. |
| Switching function not working | Incorrect wiring of the contact. Temperature not reaching threshold. Faulty contact. | Verify wiring of the normally open contact to your control circuit. Confirm the temperature is actually reaching the set point. If still not working, contact FW Murphy support. |
| Physical damage to lens or casing | Impact or improper handling. | Discontinue use if damage compromises safety or function. Contact FW Murphy for replacement parts or service. |
Specifications
| Feature | Detail |
|---|---|
| Model Number | EGS21T-250-12 |
| Brand | FW Murphy |
| Temperature Range | 0-250 Degrees Fahrenheit |
| Operating Voltage | 12 Volts DC |
| Contact Type | Normally Open |
| Connector Type | Clamp, Screw |
| Terminal Type | Screw |
| Mounting Type | Panel Mount |
| Actuator Type | Thermal |
| Item Dimensions (L x W x H) | 4 x 4 x 4 inches |
| Item Weight | 1 pound |
| Material | Copper (Contact Material) |
| International Protection Rating | IP00 |
| UPC | 650056083863 |
Warranty Information
FW Murphy products are manufactured to high standards. For specific warranty terms and conditions applicable to the EGS21T-250-12, please refer to the warranty documentation included with your purchase or visit the official FW Murphy website. Typically, warranties cover defects in materials and workmanship under normal use.
Customer Support
For technical assistance, troubleshooting beyond this manual, or warranty claims, please contact FW Murphy customer support. Have your model number (EGS21T-250-12) and purchase details ready when contacting support.
You can find contact information on the official FW Murphy website or through your authorized distributor.
