6. Loosen the valve’s torque bolt.
Figure 5-6: Valve
A. Torque bolt
7. Holding the lower piston plate, pull the valve straight off the block.
The alignment pins may stick slightly.
8. Remove and discard the old valve diaphragms and gaskets.
9. Clean the sealing surface as required using a non-lint-forming cloth and isopropyl
alcohol. Blow the sealing surface with clean, dry instrument air or carrier gas.
Note
Dirt, including dust and lint, can cause troublesome leakage.
Do not use an oil-based cleaner on the valve.
10. Replace the old diaphragms and gaskets, in the same order, with the new ones
supplied.
11. Reassemble the valve using the following steps:
a) Align the pins with holes in the block and push the valve assembly into place.
b) Tighten the valve’s torque bolt.
The six-port valve requires 20 ft-lb of torque; the ten-port valve requires 30
ft-lb of torque.
c) Return the valve to the assembly.
d) Reinstall the valve using the two mounting screws and reconnect all fittings
and tubing.
Related information
List of engineering drawings - Rosemount 700XA
Operation and maintenance
Reference Manual
June 2022
2-3-9000-744
112
Emerson.com/Rosemount
Summary of Contents for Rosemount 700XA
Page 1: ...Reference Manual 2 3 9000 744 Rev L June 2022 Rosemount 700XA Gas Chromatograph ...
Page 6: ...TxD TD or Sout Transmit data or signal out 6 ...
Page 30: ...Overview Reference Manual June 2022 2 3 9000 744 30 Emerson com Rosemount ...
Page 100: ...Installation and start up Reference Manual June 2022 2 3 9000 744 100 Emerson com Rosemount ...
Page 182: ...Operation and maintenance Reference Manual June 2022 2 3 9000 744 182 Emerson com Rosemount ...
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