Emerson daniel 1500 series, Руководство пользователя

Страница: 95 / 104

10 Corrective maintenance
Topics covered in this chapter:
• Turbine meter troubleshooting
• Verify the return to operational condition
10.1 Turbine meter troubleshooting
Use the table below to troubleshoot the turbine meter. Contact the nearest Daniel
Measurement and Control Sales or Service office for repairs. It is important that servicing
be performed by trained and qualified service personnel.
Troubleshooting Table 10-1:
Condition Probable cause Correction
(1)
No output pulses
from amplifier
module Input voltage to amplifier below mini-
mum required for operation Apply correct voltage (10 - 30 VDC)
Damaged or shorted pickoff (Resist-
ance across leads should be 600-900
Ohm) Replace pickoff
Damaged amplifier module Replace amplifier module
Customer receiver unit not operating Contact Daniel Customer Service
Meter rotor not turning Troubleshoot internal assembly
Turbine meter ro-
tor not turning Defective rotor bearing Return rotor assembly to factory for
replacement or repair
Rotor damaged by foreign material
passing through turbine meter Return rotor assembly to factory for
replacement or repair
Inaccurate read-
out Foreign material on rotor blades Check and clean blades
Rotor blades are bent Return to factory for replacement or
repair
Defective accessory equipment Troubleshoot equipment
(1) * Refer to Section 9.3 for disassembly procedures.
10.2 Verify the return to operational condition
After correcting maintenance issues, verify that the turbine meter is working properly by
following the steps below.
1.
Inspect all electrical connections to ensure compliance with electrical codes and
safety regulations.
Corrective maintenance
User manual 85