Valco electronic Valve Oven - Manual (Page 43)

Operating Manual 43
4
Troubleshooting
This chapter has information to help you to find and correct potential problems
when using the TRACE GC Ultra Valve Oven.
Chapter at a Glance…
Leak Testing .........................................................................................................43
Valve Switching ....................................................................................................44
Valve Plumbing ....................................................................................................45
The most common problem associated with valves and plumbing are leaks, valves
not switching properly, and valves not plumbed correctly.
Leak testing
Leak testing requires studying plumbing diagrams and system configurations.
1. Identify all gas sources leading into the flow path to be leak tested. Determine
if the gas sources are either a common source or if they are at the same bottle
pressure.
2. Be sure all components in the sample path will withstand the pressure being
applied to the system.
3. Be sure all possible gas outlets are blocked. This will require knowing how to
identify the various flow paths throughout the valving system to be sure vents
are blocked or bypassed.
NOTE Leak should be detected using an electronic leak detector.