Table of Contents
1. | INSTALLATION AND OPERATION | 4 | |
| 1.1. | FEATURES | 4 |
| 1.2. | SPECIFICATIONS | 5 |
| 1.3. | OPTIONAL | 6 |
| 1.4. | OTHER ACCESSORIES | 6 |
| 1.4.1. Hastings Model 40, | Error! Bookmark not defined. | |
2. | INSTALLATION AND OPERATION | 7 | |
| 2.1. | RECEIVING INSPECTION | 7 |
| 2.2. | POWER REQUIREMENTS | 7 |
| 2.3. | OUTPUT SIGNAL | 7 |
| 2.4. | MECHANICAL CONNECTIONS | 7 |
| 2.5. | ELECTRICAL CONNECTIONS | 8 |
| 2.6. | OPERATION | 9 |
| 2.6.1. | Operating Conditions | 9 |
| 2.6.2. | Zero Check | 9 |
| 2.6.3. | High Pressure Operation | 10 |
| 2.6.4. | Blending of Gases | 10 |
| 2.7. | OPERATION WITH EXTERNAL DEVICES | 10 |
| 2.7.1. Operation with a Hastings power supply | 10 | |
| 2.7.2. Operation with a power supply other than a Hastings | 10 | |
| 2.7.3. | Operation with an external sensor. (Fig. 2.2) | 11 |
| 2.7.4. | Soft Start | 11 |
| 2.8. | RANGE CHANGING: | 11 |
3. | THEORY OF OPERATION | 12 | |
| 3.1. | OVERALL FUNCTIONAL DESCRIPTION: | 12 |
| 3.2. | SENSOR: | 12 |
| 3.3. | ELECTRONICS: | 12 |
| 3.4. | SHUNT: | 13 |
| 3.5. | VALVE: | 14 |
4. | MAINTENANCE | 15 | |
| 4.1. | AUTHORIZED MAINTENANCE | 15 |
| 4.2. | TROUBLESHOOTING | 15 |
| 4.3. | ADJUSTMENTS | 16 |
| 4.3.1. Calibration Procedure: (Figure 4.1) | 16 | |
| 4.3.2. | Miscellaneous adjustments | 17 |
| 4.4. | INLET REMOVAL: | 17 |
| 4.5. | PRINTED CIRCUIT BOARD REPLACEMENT | 17 |
| 4.6. | SENSOR REPLACEMENT: | 17 |
| 4.7. | ORIFICE CHANGES: | 17 |
| 4.7.1. | 18 | |
| 4.8. | REPLACEMENT PARTS | 19 |
5. | CONVERSION FACTOR TABLE | 20 | |
6. | WARRANTY | 24 | |
| 6.1. | WARRANTY REPAIR POLICY | 24 |
| 6.2. | 24 | |
7. | DRAWINGS | 25 | |
| 7.1. | NOTES: | 25 |
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