Siemens GC..M.. Manual de instalación descargar pdf (Pagina 35)

Maxum II Initial Startup Procedures, Continued

Check Operation of Oven Heaters

For Air Bath heaters (including PTGC) perform the following procedure: Note that on PTGC units, it is

recommended to have carrier flow thru columns during this test.

 Turn heater circuit off by setting oven air regulator below 5 psig.

 Through the MMI, observe the oven temperature and set point temperature.

 Cool oven down, approximately 20 to 40 degrees below set point.

 Increase oven air regulator slowly until the oven pressure switch triggers the heater circuit

(between 6 and 9 psig), this is indicated when the top LED lights (green).

 Note: units with a vortex cooling device will have its regulator setting significantly above this.

Utilize the “Heater Air” gauge reading for this check.

 Observe when the heater circuit goes into temp limit. This is indicated when the third LED lights

(yellow).

 Press and hold the appropriate oven temp test button down (this may take a few minutes).

 Observe when the over temp shutdown light comes on. This is indicated when the fourth LED

lights (red).

 Release over temp test button and verify the over temp light stays on.

 Verify through the MMI that the oven temperature starts decreasing (this may take a few

minutes). Also, that an over temp fault alarm is generated.

 If dual oven applications, repeat steps above for second heater channel.

 Reset analyzer and turn up oven air regulator to the appropriate/normal setting(s) and verify that

the oven(s) will reach set point and maintain set point without any faults or failures.

For Airless Heaters (including detectors, methanators, SLIV’s etc.) perform the following procedure.

 Through MMI, observe the oven temperature and set point temperature.

 Momentarily disconnect/unplug and reconnect the RTD probe connector. Use safeguard

measures that static is not introduced when disconnecting and reconnecting this connector. The

use of antistatic wrist straps is recommended.

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Siemens GC..M.. Manual de instalación Pagina 35