Siemens Maxum II Manual page 29

11.
12.
13.
If px (equipped with APU)
14.
15.
16.
17.
Note
If the fast purge process does not complete correctly ending in the Purge LED light remaining
on, then turn off power and repair any leaks that may exist.
(For all systems)
18.
Note
(For systems without APU) If there is ever a loss of purge, the Purge alarm LED on the display
will light and a software purge alarm is logged.
(For systems with an APU) If there is ever a loss of purge, the APU will turn off power to the
analyzer.
Maxum edition II Analyzer General Maintenance
Manual, August 2018, A5E42019842001
Turn on the fast purge switch and allow fast purge air to flow for at least 8 minutes.
Flow of fast purge air can be verified because of the louder sound of the air flow. The
fast purge relief valve opens slightly and the air can be heard as it leaves the EC.
Turn off the fast purge switch. Flow of normal purge air should continue.
Turn on electrical power to the system.
Turn on electrical power to the system. The remainder of the startup process is auto‐
matic and is described as follows.
APU power comes on. The Purge LED next to the maintenance switch begins to blink.
The APU activates the fast purge function. Activation of fast purge can be verified by
the louder sound of air flow. Fast purge continues for approximately 8 to 20 minutes.
During this time the Purge LED next to the maintenance switch should blink intermit‐
tently. Allow at least 30 minutes before interrupting the startup purge to diagnose a
delay.
Once the APU determines that the analyzer is properly purged, it activates power to
the analyzer. At this point the Purge LED next to the maintenance switch should stay
on constantly.
Once power has been applied to the main analyzer, complete startup of the system
(refer to startup procedures available in installation documentation). For systems with
APU, the Purge light next to the maintenance switch should remain on. For systems
without APU, the purge light on the Maintenance Panel or CIM display should remain
off.
General Maintenance and Troubleshooting
4.4 General Analyzer Startup Procedure
29