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Vacuum Flow Regulator Use and Care Instructions

The Vacuum Flow Regulator is for use with the NST Medical Gas Outlet Analyzer.  Used in conjunction with the Gas Analyzer, an operator will be able to perform a complete pressure and flow test of the facilities vacuum inlets.  These tests are required by the National Fire Protection Association (NFPA ) and are specified in the NFPA 99 – Standards for Health Care Facilities (Section 4-3.4.2.1(c)).

Use Instructions:

1. Insert the vacuum inlet adapter connected to the flow regulator into a wall inlet on the same zone as the vacuum inlets that will be tested.

2. Allow vacuum flow through the regulator by turning the valve on the flow regulator in the counter-clockwise direction.

3. Adjust the flow rate to 85 liters per minute.  The flow rate is indicated by a point on the printed scale aligned with the center of the ball float.

4. While covering the flow port on the vacuum adapter connected to the NST Medical Gas Outlet Analyzer, insert the adapter into the vacuum inlet under test.  When prompted by the analyzer display, remove your finger or thumb to allow flow through the vacuum adapter and press the right arrow () on the front panel of the analyzer.

5. When prompted by the analyzer display, unplug the adapter from the wall inlet and proceed to the next inlet.  Repeat Step 4 for the remaining vacuum inlets on the current zone under test.  Repeat Steps 1-4 for each zone.

Care Instructions:

Occasional cleaning may be necessary if dirt appears in the flow regulator or if the ball float movement becomes restricted.  To clean, rotate the retaining clip (located on the back of the flow regulator) counter-clockwise to align the clip with the slot and then pull out.  Then remove the top plug, ring, outlet fitting and ball float only.  The tube does not need to be removed.  Wash tapered hole, ball float, outlet fitting and top plug with clean water and a soft brush.  Rinse all parts with clean water and dry thoroughly.  Avoid the use of solvents and strong bases for cleaning.  Reassemble by reversing the above instructions.

CAUTION:

The flow regulator is designed for use with non-hazardous gases and liquids, at pressures up to 100 psig and temperatures up to 150° F (65° C).  Do not use hazardous gases and liquids and do not exceed the above-specified limits.  Use with hazardous gases or liquids or beyond pressure and temperature limits may cause failure, which could result in personal injury.

 

National Fire Protection Association

 


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