Table of Contents
Advertisement
MODEL 1000
5.5.5
Chromatograph Valves
5.5.5.1
Valve Cleaning
A sonic cleaner is ideal for valve cleaning. However, for field service purposes, electrical contact
cleaner also works well. DO NOT USE AN OIL BASE CLEANER.
5.5.5.2
Valve Overhaul
The chromatograph valve is designed to withstand millions of actuation cycles without leakage or
failure. If service is required, the valve can be overhauled using a standard kit of replacement parts
available from Daniel Measurement Services (DMS), a division of Emerson Process Management.
The following are procedures for overhauling the valve using a Rebuild Kit from Daniel
Measurement Services (DMS). A torque wrench scaled in foot-pounds is required.
5.5.5.3
Valve Overhaul Instructions
To overhaul the Chromatograph valve, follow these steps and refer to drawing CE-13021 or
CE-20234 in the Analyzer drawings addendum of this manual:
(1)
Remove the malfunctioning valve from the Analyzer. Secure the valve in a vise, clamping
only at the baseplate.
(2)
Loosen the torque bolt by turning counterclockwise.
(3)
Remove the entire valve from the vise and prepare for disassembly in a clean area.
(4)
Remove the torque bolt and disassemble the valve starting with the primary plate.
(5)
Carefully slide the remaining portion of the valve from the mounting fixture.
(6)
Inspect each valve piece for obvious debris, scratches or contamination and clean as required
with sonic cleaner or electrical contact cleaner. DO NOT USE AN OIL BASE CLEANER.
After cleaning, blow clean dry instrument air or helium through the valve ports.
(7)
Discard the old valve diaphragms. Replace the old valve diaphragms with the new
diaphragms in the valve repair kit.
(8)
Re-assemble the valve by following the instructions in drawing CE-13021 or CE-20234.
MAINTENANCE
SEP 2005
5-25
Advertisement
Table of Contents
Troubleshooting
