Brand And Model-Specific Parts; Attach The Facepiece; Attach The High Or Low Pressure Manifold - Honeywell Posi3 USB Setup Manual

Brand and Model-Specific Parts

In many cases the high or low pressure
manifold (as appropriate for the breathing
apparatus) can be used without any special
parts to connect the air source to the breathing
apparatus and to the Posi3 USB.
If testing the first stage a model-specific
adapter and the first stage manifold are
necessary to connect the breathing apparatus
to the Posi3 USB.
7.2

Attach the Facepiece

Position the facepiece squarely on the test
head, and tighten the straps evenly. Make
sure the face piece's inner sealing surface is
flat, sealed to the test head, and that nothing
compromises the integrity of the seal.
Make sure the nose cup is positioned over and
across the test head nose.
Do not connect the second stage regulator to
the facepiece until the software instructs you
to do so. The facepiece must be vented and
open to ambient air pressure when the
facepiece leak test is started.
7.3 Attach the high or low
pressure manifold
1. Turn off the cylinder valve on the SCBA to
be tested and depressurize it by using the
bypass.
2. Disconnect the SCBA from the cylinder. If
the cylinder will not be used as the
pressure source for testing, it can be
removed during testing.
3. Select the manifold that matches the
supply pressure of the SCBA and connect
the handwheel on the single end of the
pressure-reducing manifold to the Posi3
USB through the high pressure inlet fitting
located on the lower right front panel of
the Posi3 USB. Make sure the handwheel
is tight.
The correct manifold
must be used to ensure the correct results
during the bypass flow test. Use of the
incorrect manifold can lead to incorrect
bypass flow test results, serious injury, or
death.
other than a cylinder is used, make sure
the supply regulator is set to the
appropriate pressure.
4. Connect the handwheel on the open side
of the T-fitting to the air source. Make
sure the handwheel is tight and that any
valve used for the pressure supply is
located next to the T-fitting on the
manifold.
manifold does not kink! Kinking can
cause the hose to rupture, which can lead
to serious injury, or death.
5. Connect the SCBA to the T-fitting on the
manifold.
26
If a pressure supply
Make sure the