Super Systems PGA3500 - Manual (Page 7)

SSi Manual 4559 Page 7 of 26 3-Gas Analyzer PGA3500
Revision Level - D
On a furnace, the ideal port would be found on SSi’s Sample Port (Part Number 20263). If
this were not available, the burnout port of a freshly burned-out Gold Probe
 would be an
alternative, although this would still contain a trace amount of soot.
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. This
is accomplished by opening the valve without connecting the analyzer. Wait until the gas
stream is clean before proceeding, and connect the sample line on the PGA3500 to the
sample port.
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 mini flow meter located
on the inside of the lid of the case, or by the digital flow meter on the left side of the display.
The flow meter on the inside of the case 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. The internal pump can be operated
manually by pressing the circular arrow key, or it can be turned on or off automatically when
it detects low sample flow.
Filters
There are two filters that are intended to prevent soot or other contaminants from entering
the unit. The first is a light-blue colored in-line filter that is located at the end of the sample
tubing assembly. The second is a bowl filter located on the inside of the lid. Periodic
inspection of these filters will ensure smooth operation. When new, the elements in both of
these filters are a yellow/white color. Both are oriented in the sample stream in a manner
that causes any contaminants to collect on the outside of the filter media, which allows for a
visual inspection of filter status. If the primary filter is properly maintained, the secondary
filter will rarely require changing.
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 assembly, and eventually enter the bowl filter. Care
must be taken to ensure that no water enters the unit, as this will cause permanent 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 is not intended to 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.
Battery
The battery in the PGA3500 is intended to provide more than enough power to operate the
unit continuously for an eight-hour shift. When
Battery Low is displayed on the LCD screen,
the unit is in need of a charge. To charge the PGA3500, plug it into a 110 or 220VAC power
source using the supplied power cord. The LED above the power cord input will appear red
while the unit is being charged, and it will turn to green when charging is complete.
For maximum battery life, do not recharge the battery after each use unless the
Battery Low
message appears on the screen. Reducing the number of times that the unit is charged will
maintain the battery’s original storage capacity for a longer period of time.