General Maintenance 4
5977B Series MSD Troubleshooting and Maintenance Manual 125
To Remove the Foreline Gauge
Materials needed
• Screwdriver, flat-blade, large (8730-0002)
Procedure
1 Vent the MSD.
2 Separate the MSD from the GC and disconnect the transfer line
temperature sensor. (See “To Separate the MSD from the 7890 GC” on
page 97.)
3 Unplug the foreline gauge cable from the foreline gauge.
4 Disconnect the foreline gauge assembly from the DP outlet.
5 Loosen the hose clamp.
6 Pull the foreline gauge assembly out of the foreline hose. (See Figure 17 on
page 126.)
The foreline pump and DP may still be hot.
Ensure the MSD is vented to atmosphere before breaking the seal at the foreline
gauge. Never vent the MSD at the pump end; use the vent valve.
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