Super Systems MGA6000 - Manual (Page 7)

SSi Manual #4563 Rev. D Page 7 Multi-Gas Model 6000
On a generator, a dedicated sample port should be available. This sample port should be blown out before it
is used, which will remove any soot that has accumulated in the line.
The ideal flow rate for sampling should be between 1.0 and 1.5 Standard Cubic Feet per Hour (SCFH). A
visual indication of flow rate can be obtained through the flow meter located on the face of the enclosure, or
by the digital representation of flow on the left side of the display screen. The flow meter on the outside of
the enclosure also contains a dial that allows the user to restrict the flow, if necessary, to maintain an
appropriate flow rate. If the sample gas is not under pressure, the internal pump can be used to extract it.
For additional information on the operation of the pump, please refer to the section
Pump Control (menu
option 4).
Filters
The side of the enclosure contains a large bowl filter that is intended to prevent soot and other contaminants
from entering the instrument. Periodic inspection of this filter will ensure reliable operation of the MGA6000.
When this element is new, it is a white/eggshell color. As this filter becomes dirty it will turn black and the
flow rate of the analyzer will begin to diminish. Replacing the filter element is as simple as unscrewing the
clear bowl from the filter housing, and unscrewing the retaining plug at the base of the element.
Information on replacement filters can be found in the section of this manual entitled “Spare Parts”.
Condensation / Moisture
When a hot gas is cooled rapidly, moisture in the gas can condense and form water. This water can collect
in the sample tubing and eventually enter the bowl filter. Care must be taken to ensure that no water enters
the unit, as this will cause permanent, irreversible damage to the sensors. The unit should be closely
monitored during operation to determine if moisture is collecting in the bowl filter. If this is the case, the
bowl filter basin can be removed and emptied by unscrewing it. Although water in the bowl filter will not
cause damage to the unit, this filter should not be used as a condensation receptacle. If moisture has
collected in the bowl filter, sampling should be stopped, and steps should be taken to prevent this from
continuing before operation is resumed.