13
GA0383P02 Rev. C
System Operation
GCM-A Initial Startup
The GCM-A leaves the factory without any water in the water bottle or in the humidifier to
prevent damage during shipping. Before starting the GCM-A, fill the water bottle with
distilled water. (WARNING: The use of anything other than distilled water will damage
the GCM-A and will void the warranty.)
To fill the GCM-A water bottle:
• Open the outer door.
• Remove the six screws from the GCM-A subdoor.
• Remove the water bottle from the water bottle shelf.
• Remove the cap from the water bottle and fill it with distilled water.
• Secure the cap on the water bottle and return the bottle to the water bottle shelf.
• Secure the GCM-A subdoor and outer door.
The humidifier is filled during the boot process (see the section GCM-A Initialization for
details of the boot process). At the point in the boot process where the GCM-A normally
indicates “WATER OK,” it will instead indicate “WATER=0”. After one second, “WATER=0”
will be followed by “WATER=1,” and so on until “WATER=15” is reached. At this point the
GCM-A will flash the prompt “CONTINUE FILLING?”. Press the enter key to continue filling.
The humidifier will be filled to capacity at or about “WATER=17”.
The GCM-A may detect that the Zone Manifolds need to be adjusted during the initial boot.
If it detects that the flow rates are out of specification, it will stop the boot process and flash
the out of specification reading on the display. It will flash “AMB FLO = N.N LPM” if the
ambient air flow rate is out of specification and/or “GEN FLO = N.N LPM” if the generator
airflow rate is out of specification. Adjust the appropriate Zone Manifold to a nominal 14 LPM
correct the problem and validate the air flow through the Zone Manifold using the DP Gage.
The two zone manifolds are adjusted with an allen head set screw located on their lower
right hand side (see Figure 12). Turn the set screw in a clockwise direction to decrease the
airflow or in a counterclockwise direction to increase the airflow. The GCM-A requires
that the airflow be between 7 and 21 LPM (nominal 14 liters per minute) for initial startup.
After the GCM-A has started successfully, adjust the airflow and clear the event logs.
You may want to run the tutorial called “Menu Navigation Tutorial” to familiarize yourself with
menu navigation before proceeding with these steps.
See the procedures titled “Adjusting the Ambient Airflow” and “Adjusting the Generator
Airflow” to adjust the airflow. See the sections “CLEAR FAULTS LOG” and “CLEAR POWER
LOG” under the heading “Log Menu” to clear the event logs.
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