Using Pressurized Nitrogen

Observe the proper handling of cylinders:

• Always keep protective cap on cylinder when not in use.

• Secure cylinder in proper storage area or fastened to cart.

• Do not expose to excessive heat or direct sun light.

• Do not drop, dent, or damage cylinder.

• Use a pressure regulator and a safety pressure relief valve as part of the pressure testing equipment. The safety pressure relief valve should be of the non-adjustable, non-tempering type. The valve should bypass any time the pressure exceeds its setting.

• Open valve slowly; use regulators and safety valves that are in good working order.

• The regulator should have two gauges; one to read tank pressure, the other to read line pressure. Properly maintained equipment will allow leak testing, purging, or dehydration to be done safely.

Dehydration, pressure testing, purging, and soldering can be accomplished with the use of dry nitrogen (N2). The proper equipment and application of equipment is of greatest importance.

1. Attach gauge manifold set (Refer to Gauge Manifold Set for proper procedure for connecting to compressor).

2. Close both hand valves on the gauge manifold (front seated).

3. Connect charging hose to a source of nitrogen. Adjust pressure regulator to the proper pressure for the required procedure.

4. Purge system high side to low side.

The following procedures should utilize the following maximum gas pressure:

• Leak Testing: 1034 to 1200 kPa, 10.34 to 12.00 bar, 150-174 psig.

• Purging/Dehydration: 69 to 138 kPa, 0.69 to 1.38 bar, 10-20 psig.

• Soldering: 35 kPa, 0.35 bar, 5 psig.

Evacuation Station and Unit Hook-up

Open