ELTRA ONH-2000 User Manual

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ELTRA ONH-2000 Specifications

General

Brand	ELTRA
Model	ONH-2000
Category	Measuring Instruments
Language	English

Summary

Troubleshooting Faults

1.1 IR Cell Test Displays

Troubleshooting IR cell test displays showing ++++.

1.2 No Gas Flow

Diagnosing and resolving issues related to no gas flow.

1.3 Unstable Flow Rate

1.4 TC Cell Baseline Adjustment Issues

1.7 Erratic Analysis Results

Troubleshooting inconsistent or erratic analysis results.

1.8 Infrared/TC Cell Temperature Regulation LED

1.9 No Analysis Start

Troubleshooting why the analysis fails to start.

1.10 "No Water Flow" Message

Resolving the "No Water Flow" message on the display.

1.11 High Furnace Block Temperature

Addressing the furnace block temperature exceeding limits.

1.12 Negative TC Cell Baseline

1.13 No Furnace Power During Analysis

Resolving the issue of no furnace power during analysis.

1.14 Sample Drop Motor Not Rotating

Troubleshooting the sample drop motor not functioning.

1.15 Malfunctioning Electronic Drivers

1.16 Infrared Baseline Noise or Drift

Addressing noise or drift in the infrared baseline.

1.17 Furnace Cut-off During Analysis

1.19 Saved Data Lost

Troubleshooting issues with lost saved data.

1.21 Chopper Motor Not Rotating

1.24 Unstable Current

Adjustments, Test, and Function Explanation

2.1 Gas Flow Controller Adjustment

Adjusting gas flow controller and settings.

2.2 Pressure Switch Adjustment

Adjusting and testing the pressure switch.

2.3 Infrared Baseline Control & Adjustment

Controlling and adjusting the infrared cell baseline.

2.4 IR Source Voltage Setting

Setting the correct voltage for the IR source.

2.5 IR Cell Temperature Regulation

Adjusting and maintaining the IR cell temperature.

2.6 Furnace Lift Pneumatics

2.7 Flow Rate Adjustment

Manually adjusting analysis and purge gas flow rates.

2.9 Linearization Procedure

2.12 TC Cell Zero Baseline Adjustment

Adjusting the zero baseline for the TC cell.

2.14 TC Cell Temperature Regulation

2.15 Water Flow & Furnace Temp. Sensing Board ON21

2.16 Furnace Control Board PW13 Adjustment

2.18 Sample Drop Motor & Switch Adjustment

Servicing Procedures

3.1 IR Paths: Cleaning and Replacing

3.2 IR Source Handling

3.3 Infrared Electronics Board IR21

3.4 Infrared Power Supply Replacement

3.5 Chopper Assembly Maintenance

3.6 IR Cell Temperature Regulation Components

3.7 Leak Checking Procedure

Step-by-step guide for checking gas system leaks.

3.11 Channel Coding of Connectors

3.13 Cleaning Solenoid Valves

3.14 Replacing the Flow Sensor

3.15 Installing AC Power Stabilizer

3.16 Replacing the Gas Pump

3.17 Furnace Pneumatics Safety Features

3.18 230V / 400 V Operation Conversion

3.20 Replacing Solenoid Valves V7/V8

Miscellaneous Information

4.2 Wiring Diagrams Overview

4.3 Gas Flow Diagrams & Analysis Sequences

Diagrams illustrating gas flow and analysis sequences.

4.5 Maintenance Checklist OH/ON/ONH-900/2000