System Troubleshooting - ABB COPA-XM 3000 Series Instruction Manual

Series 10DX3000 Magnetic Flowmeter Instruction Manual

5.2 System Troubleshooting

In the event that faulty operation of the Magnetic Flowmeter is evident, the following procedure can
be used as a guide to isolate the malfunctioning device to either the primary meter or the Signal
Converter. A standard multimeter and an oscilloscope are suitable for making most of the test
measurements.
To supplement the following discussion refer to:
Section 4.3 Circuit Description
Signal Converter ... refer to applicable instruction manual
The Series 3000 Magnetic Flowmeter housing is supplied as a sealed unit.
Therefore, customer field repairs to these meters are not recommended. In
the event of a malfunction, repairs should only be performed by an author-
ized field service engineer, or the complete meter returned (shipping
ELECTRICAL SHOCK HAZARD. Equipment powered by an AC line voltage
presents a potential electric shock hazard. Servicing of the Magnetic
Flowmeter or Signal Converter should only be attempted by a qualified
1. If improper meter operation is suspected, proceed as follows:
a) Remove access covers from the junction box and the Converter housing (remote or
integral).
b) Inspect for evidence of water entry in the junction box and Converter housing.
If water is present in either the junction box or converter housing of the flowmeter, immediately
de-energize system power to eliminate the possibility of a shock hazard.
The presence of water in either the converter housing or the terminal box atop the remote primary
most often results in irreparable damage to the circuit board assemblies inside. If such damage is
evident, the meter should be removed from the process pipeline and returned to the factory for repair.
It is also important that the source of the water-entry be found so that the situation doesn't reoccur
when the meter is placed back into service.
Should water be found inside the wiring compartment of an integrally mounted converter housing, the
circuit board assembly in this section may be replaced in the field (Consult the factory for additional
instructions if this procedure becomes necessary).
5-2
NOTE
charges prepaid) to the factory for service.
WARNING
electronics technician.