Agrify PRECISION HDU 운영 매뉴얼 - 페이지 7

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Section 3 – Pressure Testing

The HDU comes factory tested and inspected for sustained pressure holding capabilities. However, shipping and moving of the unit may cause

pressure leaks and/or equipment exposure to drastic changes in temperature. It is the operator's responsibility to check for pressure leaks prior

to operation.

3.1.

Checking System for Leaks

3.1.1.

Attach all the components and hose assemblies.

3.1.2.

With all valves on the system open, bring the system pressure to 150 psig using a nitrogen cylinder.

3.1.3.

Note the actual readings of the pressure gauge by taking a photo for later comparison.

3.1.4.

Allow the system to sit under 150 psig for one hour if this is a primary test (ﬁrst pressure test).

3.1.5.

Take note of any diﬀerence in pressure. This indicates a leak, and that the system is unsafe to operate.

3.2.

Identifying Leaks

3.2.1.

Fill a spray bottle with soapy water. Spray the area of the unit where a leak is suspected. The presence of bubbles

conﬁrms a leak.

3.2.2.

The most common areas for leaks are the tri-clamp gasket sealing joints.

3.2.2.1.

Before adjusting any pieces on the unit, vent the system down to 0 psig.

Model HDU Operational Manual – For Hazardous Environments

Precision® Extraction Solutions

Model HDU Operational Manual – For Hazardous Environments