ABB CK-MAG 10D1477 Instruction Manual page 44

10D1477 MAGNETIC FLOWMETER INSTRUCTION MANUAL
6.0 MAINTENANCE
6.1 General
Except for an occasional performance verification check, there is no required routine maintenance
for the Model 10D1477. As previously discussed, the magnetic flowmeter spool is of all welded
construction. Therefore, in the event a malfunction occurs in the primary, the meter body must be
replaced.
The manufacturer offers a Repair/Exchange Program to facilitate replacement of a defective Meter or
Converter Assembly. If the equipment is beyond the warranty limit, under this program a fixed price
will be charged to the account of the Customer for replacement of defective equipment with appropri-
ate credit issued when the repairable unit is received by the manufacturer (charges prepaid). The
equipment available under this program is as follows:
a. the complete meter (includes necessary installation hardware)
b. the meter and associated Primary Board (CMF/BUFFER), including the installation
hardware, and
c. the remote signal converter.
The signal converter and CMF/BUFFER assemblies use both IC and LSI components. Generally, due
to the complexity of troubleshooting integrated circuit devices, maintenance beyond the assembly
level is not recommended. Also, caution must be used when connecting test probes, as even a
momentary accidental short circuit may damage or destroy an integrated circuit device. Therefore,
only trained electronic technicians who are familiar with COS/MOS technology and have a back-
ground in logic and gating circuitry should be permitted to service this equipment.
In the event of a malfunction in the signal converter assembly, a replacement pc assembly can be
quickly substituted for the defective assembly, thereby minimizing system down time. Servicing by
substitution of spare assemblies is generally more economical than stocking a large variety of IC
chips, transistors, diodes, etc. Also, test equipment requirements and the level of technical expertise
necessary are minimized. Should any doubt arise regarding the proper procedure for solving an
existing problem, it is suggested that the user contact the local service facility for technical assis-
tance.
When communicating with the manufacturer regarding replacement of a complete meter, the meter
body only, or the remote signal converter assembly, it is important to refer to the complete instrument
serial number to assure that the correct replacement will be supplied. The required information is
provided on the manufacturing specification sheet supplied with the magnetic flowmeter, and on the
instrument data tag.
6-1