Roberts Gorden 75, 100, 125 service manual Ignition Control, Limit Switches Removal and Replacement

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SECTION 15: REPLACEMENT PARTS

15.6 Pressure Switch

Pull off 3 way connector. Spring open plastic clips of mounting cradle. Replace with correct type of pressure switch for model. The pressure switches are color coded for each pressure setting.

Carry out a start-up after working on or changing a pressure switch. See Page 26, Section 11.

MODEL

UHD[X][S] 75

UHD[X][S]100

UHD[X][S] 125

 

 

 

 

Pressure Switch Kit P/N

90439810

90439810

90439803

 

 

 

 

Color Code

black

black

gray

 

 

 

 

Set Point in wc

.35

.35

.41

 

 

 

 

Pressure Switch Snap Ring P/N

90439850

90439850

90439850

 

 

 

 

15.7 Ignition Control

The control mounts to the heat exchanger plate. Pull out ignition cable and wiring from board, noting their positions. Release the four mounting standoffs. Refit in reverse. Ensure correct location of ignition cable and all other wiring.

15.8 Limit Switches

15.8.1 Removal and Replacement

1.Remove the electrical connections to the switch.

2.Unscrew the two screws securing the switch.

3.Fit a new switch with two screws.

4.Reconnect the electrical connections and test operation.

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Contents Combat Page Combat Page Roberts-Gordon LLC Page Table of Figures Page California Proposition Heater SafetyManpower Requirements Safety Labels and Their PlacementUhdxs 75 Label Placement Combat National Standards and Applicable Codes Installer ResponsibilityWall Tag Corrosive ChemicalsCritical Considerations Clearances to Combustibles National Standards and Applicable Codes High Altitude Minimum Inlet Duct Length Duct Heater Installation 6.1 GeneralTemperature Rise and Pressure Drop Ranges Air Flow and Temperature Rise RangesSuspension Methods Wall MountingShelf-Mounting Methods Canadian Requirements Vent InstallationVenting United States RequirementsLength Requirements Standard Vented Heaters Models Uhdx 75Horizontal Venting Vertical VentingMaximum Vent Lengths Vent MaterialReplacing an Existing Heater in a Venting System Model Standard Vented Heater Common Vertical Vent Termination Concentric Vent Box UHVK1 Outside Combustion Air Supply Unvented InstallationAIR Supply Building VentilationGAS Piping Fire Hazard Connect gas supply according to FigureConnections When attaching flexible gass connector Product Damage HazardHold gas nipple securely with pip wrench Wiring L2 L1 Uhdxs Series Internal Wiring DiagramFlue Blower Transformer GAS Valve Flame Sensor Electrode Uhdxs Series Ladder Wiring DiagramElectrical Connection to the Heater Begin Start-Up Before Operating the Heater Operation and MaintenancePre-Start-Up Checks Electrical ChecksEND View Automatic Burner Control SequenceExternal Controls Pressure SwitchCheck Gas Rate Turning Off the HeaterHeater Operation User InstructionsTo Turn Heater Off Simple TroubleshootingSimple Troubleshooting Burner Faults Lighting Instructions 12.3.1 To Turn On HeaterServicing Objects Annual Fall Start-upVicinity of the Heater Vehicles and OtherHeat Exchanger When installed DuctworkCombustion Air Intake PipeTroubleshooting Start GeneralConduct start-up procedure as shown on Page 26, Section Troubleshooting For Automatic Ignition Burner SystemsTroubleshooting for Flame Supervision System Troubleshooting for Flue Blower Troubleshooting for Gas ValvesBurner Components Replacement PartsBurner Injectors Burner CompartmentIgnition Electrode and Flame Probe Flue Blower Vertical Installation Ignition Control Limit Switches Removal and ReplacementTOP View Specifications 16.1 Dimension DataTechnical Data Table General Technical Data TablePage Limitations on Authority Representatives Warranty is Void ifROBERTS-GORDON LLC will not PAY for Roberts-Gordon LLCPage Mail or Fax to Owner Warranty Registration CardPage
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125, 100, 75 specifications

Roberts Gordon is a recognized leader in the manufacturing of innovative heating solutions, with a diverse product line including the 100, 125, 75, 45, and 60 series of radiant tube heaters. Each model is designed to meet specific heating needs while emphasizing efficiency, durability, and performance.

The Robert Gordon 100 series is known for its high efficiency and ability to provide consistent warmth in large industrial spaces. It features advanced infrared technology, which heats objects and surfaces directly, resulting in quicker temperature increases and enhanced comfort. This model is equipped with modulating burners that allow for optimal gas usage and can be easily integrated into existing systems.

The 125 series builds upon the efficiency of the 100 model while offering increased heating capacity. Its robust design ensures it can handle the demands of larger applications, such as warehouses and manufacturing facilities. With enhanced control options, users can tailor the heating output to match specific operational requirements, reducing energy consumption.

The 75 series offers a compact solution for smaller commercial spaces, providing a reliable heating source without taking up excessive floor space. Its lightweight design facilitates easy installation, while the modular approach allows for scalability to meet changing heating demands. This series emphasizes sustainability, utilizing advanced combustion technologies that minimize emissions.

For smaller applications, the 45 series stands out with its efficient heating capabilities in confined spaces. This series features simple, yet effective controls, enabling straightforward operation. The robust construction ensures durability, making it well-suited for different commercial environments, including retail settings or small workshops.

Finally, the 60 series combines the best features of the range with energy conservation as a primary focus. Its innovative design incorporates smart technology to monitor energy usage and optimize performance. The heaters are equipped with the latest in safety features, providing peace of mind for users.

Overall, Roberts Gordon’s radiant tube heaters showcase a commitment to high-quality heating solutions that cater to a variety of industrial and commercial applications. With energy efficiency, superior durability, and advanced heating technologies as core characteristics, Roberts Gordon remains a trusted choice for businesses looking to enhance their heating performance.