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General| Brand | Grant |
|---|---|
| Model | OPTIMA RANGE GD100 |
| Category | Temperature Controller |
| Language | English |
General overview and applications of the Grant temperature controllers.
Guidance for qualified personnel performing adjustment, maintenance, and repair.
Defines the format for safety statements within the manual.
Details safety requirements and precautions for electrical connections and usage.
Describes the power board, display board, and their interconnections.
Details the transformer and rectifier circuits providing DC power to the unit.
Overview of how temperature is measured and the control function.
Explains the process of measuring temperature using the probe and A/D converter.
Details the triac gating circuit and how it controls the heater based on temperature.
Lists the essential test equipment and tools for troubleshooting.
Outlines basic tests to perform before proceeding with detailed fault diagnosis.
General instructions and references for identifying and fixing faults.
Lists the specific tools needed for disassembly and component removal.
Instructions for safely removing the outer casing of the unit.
Details on how to detach the front panel and its associated components.
Steps for removing the printed circuit board responsible for the display.
Procedure for removing the Power Supply Unit printed circuit board.
Instructions on how to detach and remove the heating element.
Steps for safely removing the temperature sensing probe.
Guidance on how to remove the float switch mechanism.
Procedure for removing the float and its associated shaft.
Steps to remove the motor from the GD120 model.
Steps to remove the motor from the GD100 model.
Procedure for replacing the over-temperature cut-out on GD120 units.
Lists the necessary test equipment for setting up and testing.
Basic tests to verify the operational status of the unit.
Instructions for setting the Digital to Analog Converter output.
Procedure to check and verify the heater control function.
Steps for calibrating the temperature controller for accurate readings.
Instructions on how to save the calibrated settings.
Procedure to verify the accuracy of the unit's temperature readings.
Test to ensure proper earth connection and low resistance.
Test to measure the insulation resistance between earth and live/neutral pins.
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