Siemens SITRANS FX300 - 7 Service; Replacing Signal Converter; LCD Display

SERVICE 7
63
SITRANS FX300
www.siemens.com/flow06/2009 - SFIDK.PS.050.F2.02 A5E02100423
Service
7.1 Replacing signal converter / LCD display
The signal converter has to be replaced by a converter of the same type. The following
parameters have to be observed for it:
• The item number must match: 2.143670.xxx
• The software version 2 must match.
• The basic version has no software identification
• The gas version is marked: "gas"
• The steam version is marked: "steam"
The following steps are to be performed:
• Switch off the power supply.
• Unscrew the front cover.
• Detach the display from the spacer pins.
• Detach the display cable 1.
• Detach the measuring sensor cable 3.
• Loosen the three fixing screws 5 (Phillips).
• Pull out signal converter.
• Insert new signal converter.
• Tighten the three screws.
• Attach measuring sensor cable 3 (Caution: ensure that the measuring sensor cables are not
on top of the spacer pins 4 May be damaged).
• Attach display cable 1.
• Attach display in desired position, apply even pressure to the entire surface.
• Screw on cover by hand.
Figure 7-1: Board, example
1 Connector for display
2 Version number, software identification
3 Connector for measuring sensor
4 Spacer pins
5 Fixing screw (Phillips)
MA_Siemens_Sitrans_FX300_R02_en_PRT.book Page 63 Monday, June 22, 2009 8:17 AM