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Global Power Technologies
START-UP AND OPERATION
302954 rev0 | Model 8550-RU
Page 19 of 53
4.1.4
AIR SHUTTER ADJUSTMENT
After start-up, the air shutter will be in a fully opened position. The air shutter must be tuned for the
site conditions to ensure optimal combustion. To test the air shutter during maintenance or service,
start testing with the air shutter plate in a fully opened position.
Refer to Figure 10 to identify the parts and follow the steps below to adjust the air shutter.
NOTE: The position of the cabinet door affects air intake. For these steps, open the cabinet door
only to adjust the Air Shutter and keep the door closed as much as possible.
1.
With the air shutter plate initially fully opened,
close the cabinet door for at least 15 minutes
then take a power reading and record it on the
Start-Up Data Sheet.
2.
Close the air shutter by 1/8 inch (3 mm) from its
current position.
3.
Close the cabinet door and wait 10 minutes for
the TEG to stabilize.
4.
Take a power reading and compare it to the
previous reading.
If the new power reading is higher than
the previous reading, close the air shutter
by another 1/8 inch (3 mm), wait 10
minutes, and then take another power
reading.
Continue closing the air shutter by 1/8
inch (3 mm) and checking the power every
ten minutes until the power no longer
rises, then proceed to the next step.
If the new power reading is lower than the initial reading, open the Air Shutter by 1/8 inch
(3 mm) past the initial setting, wait 10 minutes, then take another power reading. If this
power reading is the same or lower than the previous reading, then the Air Shutter is
correctly adjusted. Proceed to Step 7.
NOTE: If the Air Shutter reaches its fully open position, then leave the Air Shutter at this
position and proceed to Step 7.
If this reading is the same as the previous reading, proceed to the next step.
5.
Once the power reading has stabilized, open the Air Shutter by 1/4 inch (6 mm) from its current
position. The Air Shutter is now optimally tuned for your ambient conditions and fuel supply.
6.
Close the cabinet door and wait another 10 minutes for the TEG to stabilize.
7.
Take a final power reading.
Figure 10 – Air Shutter Adjustment