Page 78 JANUARY 2010 - TD 220a DEPLOYMENT GUIDE, RDCP60016. Clean the scars with Acetone.17. Apply Repair Lacquer to repair the scars.18. Control that the Electrical terminal is securely tightened.5.1.2 Replacements of PartsThe Profiler, the Turbidity Sensor and the Oxygen Optode are calibrated separately and can bechanged without influencing the instrument performance. The Calibration of the Temperaturesensor, Turbidity sensor and the oxygen optode is valid regardless of which Aanderaa Instrumentit is installed in. This allows for factory supply of calibrated sensors for installation by thecustomer.The Pressure Sensor and the Conductivity Sensor must be calibrated when connected to theinstrument for optimum performance. If a new Electronic Board is installed, these sensorsshould be re-calibrated before deployment.An Electronic Board can be ordered and installed without any adjustments or re-calibration ofthe Profiler, the Turbidity Sensor and the Oxygen Sensor.5.1.3 Factory ServiceFactory service is offered for maintenance, repair or calibration of instrument and parts.When returning instrument or parts for service, always include the Instrument Service Order,Form No. 135, see our web pages under ‘Support and Training’.Normal servicing time is four to six weeks, but in special cases the service time can be reduced.A main overhaul and service is recommended at the factory every two years.5.1.4 Spare Parts and AccessoriesThe manufacturer always keeps a stock of spare parts, accessories and consumable parts forquick delivery. Orders may be placed by fax, telephone or mail.The Oxygen Optode 3830 is optional, refer to TD200c RDCP Primer for information aboutcalibration and maintenance.