Airflow Instruments PAN300 Series, Руководство по эксплуатации и обслуживанию

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Preparing PAN300 System for Air Duct Leak Testing
7
6. Fit the primary duct adapter
spigot (black sheet metal
with rubber bung) to one end
of the 4-in. (100-mm)
diameter flexi-tube. Make an
air-tight seal using one of the
over lock straps and lever-
locking cam provided as
shown in Figure 4. Adjust
the fit of the over lock strap
with a screwdriver.
7. Securely attach the black
primary duct adapter
spigot/flexi-tube assembly to
the opening on the ductwork
to be pressure tested. Figure 4. Flex Ductwork
Connected to Primary Adapter
Spigot. Bung not shown.
8. If the static pressure tap on
the black Primary Duct
Adapter is open to the duct,
connect the 16-ft (5-m) long
blue silicone tube to it as
shown in Figure 5.
If the static pressure tap on
the black Primary Duct
Adapter is not open to the
duct, drill a 4-mm hole in the
duct and insert about 6
inches (10 mm) of the
silicone tube into the duct.
Seal around the hole
with putty.
9. Connect the other end of the
4-in. (100-mm) flexi-tube to
Figure 5. Connecting Pressure
Tubing to Tap on Primary Duct
Adapter. Bung not shown.
the cam lock connector (grey cast aluminum without nozzle).
Make an airtight seal using the other over lock strap and lever-
locking cam provided. Adjust the fit of the over lock strap with
a screwdriver.
10. Determine if you are going to perform a high- or low-flow testing
and positive or negative testing. Set-up the duct leakage
tester by: