Honeywell SMV 3000 - Manual (Page 115)

1/99 SMV 3000 Transmitter User’s Manual 103
9.4 Replacing Electronics Module or PROM
Module description The electronics module used in the SMV 3000 transmitter is a two Printed
Wiring Assembly design that includes an integral mounting bracket, we
refer to the PWAs as Main PWA and Temperature or Daughter PWA as a
way to distinguish them.
PROM identification The plug-in PROM on the main PWA is uniquely characterized to the
meter body of the given transmitter. For this reason, each PROM is given
a 10-digit identification number so you can verify that a replacement
PROM is the correct match for the given transmitter. The PROM
identification number is stamped on the nameplate on the transmitter’s
meter body and appears on a label under the PROM. You can also read the
PROM number using the SCT – See Section 8.2 in this manual for details.
Procedure The procedure in Table 28 outlines the steps for replacing the electronics
module or the plug-in PROM. Since you must remove the electronics
module and PROM in either case, you can easily adapt the steps as
required.
Table 28 Replacing Electronics Module or PROM
Step Action
1 Turn OFF transmitter power.
ATTENTION We recommend that you remove the transmitter from
service and move it to a clean area before taking it apart.
2 Loosen end cap lock and unscrew end cap from electronics side of
housing.
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