Model 7003M
Operator Manual
SECTION 6
ROUTINE SERVICING AND TROUBLESHOOTING
WARNING
ELECTRICAL SHOCK HAZARD
Servicing requires access to live parts which can cause death or serious injury. Refer servicing to qualified personnel.
Relay contacts wired to separate power sources must be disconnected before servicing.
Most service and maintenance involves cleaning and recharging the sensor. Refer to the instructions supplied with the sensor for recharging and maintenance procedures.
Service is rarely required on the Model 7003M Percent Oxygen Analyzer. Repair is limited to replacement of PCB boards, EPROM and fuses. See Section 7 Replacement Parts.
Troubleshooting should be referred to qualified service technicians. Refer to Section
a.Symptoms
Calibration error code displayed
Possible cause Exhausted Sensor
Check/Test
Install know good sensor and isolate
Corrective Action Recharge or replace sensor
Cannot adjust signal to calibration value
Possible cause
Sensor voltage error
Check/Test
Install know good sensor and verify voltage
Corrective Action
Recharge or replace sensor
Readings not consistent with calibration curve
Possible cause
Incorrect sensor used for application
Check/Test
Verify sensor corresponds with application
Corrective Action
Install new sensor and calibrate with span gas
Possible cause
Sensor temperature incorrect
Check/Test
Sensor temperature should be 0 to 50°C
Corrective Action
Install new sensor and calibrate with span gas
Possible cause
Incorrect span gas concentration
Check/Test
Verify span gas concentration
Corrective Action
Install new sensor and calibrate with span gas
Rosemount Analytical Inc. A Division of Emerson Process Management | Routine Servicing and Troubleshooting |