1. Check the Specifications Before Installation

Before removing the manifold from its packaging, compare the delivered component with the approved engineering drawing. Incorrect dimensions or port positions can prevent the manifold from fitting the rack.

• Confirm the specified 316 or 316L material grade and its documentation.
• Check the overall dimensions, branch spacing, and port orientation.
• Verify that threads, flanges, or weld ends match the mating components.
• Inspect protective caps and check that internal passages are clean.
• Review the required material and inspection records.

Resolve discrepancies before mounting. Never force a mismatched connection into position to save installation time.

2. Inspect Welds and Internal Cleanliness

Weld quality and internal cleanliness are important to liquid cooling system reliability. Defective joints may leak, while contaminants inside the manifold can enter the coolant loop.

• Review the available weld inspection records.
• Check accessible surfaces for visible damage or defects.
• Confirm the specified internal surface finish and cleaning requirements.
• Keep ports capped until the connections are ready.

Factory inspection does not replace the leak test required after the manifold has been connected to the site piping.

3. Position and Align the Manifold

Correct alignment reduces unnecessary stress on the manifold body, branch connections, and welded joints.

1. Place the manifold on its designated mounting bracket.
2. Keep fasteners loose enough for the adjustment permitted by the installation design.
3. Align each branch port with its corresponding pipe or rack connection.
4. Check flange alignment and available clearance around cable trays and other equipment.
5. Complete a dry fit before making permanent connections.

If a branch does not line up, check the dimensions and mounting position. Do not use bolts to pull misaligned components together or bend a welded manifold without engineering approval.

4. Tighten Connections Correctly

After alignment has been confirmed, complete the connections according to the approved installation procedure.

• Inspect threads, sealing surfaces, and gaskets before assembly.
• Start threaded fittings by hand where applicable to avoid cross-threading.
• Use the specified tightening sequence and torque values.
• Use the correct gasket and sealing method for each connection.
• Close unused ports with compatible, pressure-rated plugs or caps.

5. Flush, Pressure-Test, and Check for Leaks

After assembly, verify the completed loop according to the project commissioning procedure.

1. Check all connections and close unused ports.
2. Flush the relevant piping sections when required by the cleanliness procedure.
3. Confirm the specified test medium, pressure, and holding duration.
4. Inspect accessible joints using an approved leak-detection method.
5. Record the test pressure, duration, results, and corrective actions.

Never exceed the allowable test pressure of any component in the test section. Follow the project's safety and commissioning requirements.