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| 1 | Removal, Cleaning and refitment of HP Moisture Separator Housing. | Removal, Cleaning and refitment of HP Moisture Separator Housing. |
| 2 | Removal, Cleaning and refitment of Pre Filter Housing. | Removal, Cleaning and refitment of Pre Filter Housing. |
| 3 | Removal, Cleaning and refitment of After Filter Housing. | Removal, Cleaning and refitment of After Filter Housing. |
| 4 | Removal, Cleaning and refitment of Oil Filter Housing. | Removal, Cleaning and refitment of Oil Filter Housing. |
| 5 | Replace O- Rings of Filter housing & bonded seals of connecting pipes | Replace O- Rings of Filter housing & bonded seals of connecting pipes |
| 6 | Repair and overhauling Pneumatic change over valve. | Repair and overhauling Pneumatic change over valve. |
| 7 | Repair and overhauling of Expansion valve. | Repair and overhauling of Expansion valve. |
| 8 | Repair and overhauling of Bypass valve. | Repair and overhauling of Bypass valve. |
| 9 | Overhauling of check valve block. | Overhauling of check valve block. |
| 10 | Repair and overhauling of pressure maintaining valve. | Repair and overhauling of pressure maintaining valve. |
| 11 | Repair and overhauling of Pneumatic valve block assembly. | Repair and overhauling of Pneumatic valve block assembly. |
| 12 | Repair and overhauling of 1st stage air pressure regulator (PRV). | Repair and overhauling of 1st stage air pressure regulator (PRV). |
| 13 | Serviceability checks of safety valve. | Serviceability checks of safety valve. |
| 14 | Repair and overhauling of 2nd & 3rd stage air pressure regulators. | Repair and overhauling of 2nd & 3rd stage air pressure regulators. |
| 15 | Repair and overhauling of timer controlled auto drain valve. | Repair and overhauling of timer controlled auto drain valve. |
| 16 | Replacement of Desiccant in both drying towers. | Replacement of Desiccant in both drying towers. |
| 17 | Repair and overhauling of electrical control panel. | Repair and overhauling of electrical control panel. |
| 18 | Serviceability checks / Calibration of pressure gauges. | Serviceability checks / Calibration of pressure gauges. |
| 19 | Serviceability checks / Calibration of Differential pressure gauges | Serviceability checks / Calibration of Differential pressure gauges |
| 20 | Repair & Calibration of Dew point meter. | Repair & Calibration of Dew point meter. |
| 21 | Post completion of defect rectification, leak test and leak rectification | Post completion of defect rectification, leak test and leak rectification |
| 22 | Functional checks of BDU post defect rectification. | Functional checks of BDU post defect rectification. |
