Sherwood SRB5300, SRB5100, SRB5900, SRB5700 manual Set- Up Of Second Stage

8.Tighten the screws using a # 10 Torx screw driver just enough to seat them snugly. There is no reason to turn these screws beyond the first contact point. Do not overtighten. This screw is threading into plastic, which will hold well in service but is easily stripped if overtightened.

9.Install the mouthpiece 17 . Be sure to position the mouthpiece so that the word “Sherwood” is on the top.

10.Install a new mouthpiece tie 18 .

11.Install one end of the hose into a serviced first stage, tighten snugly.

WARNING

NEVER tighten the hose with more than 40 in. lbs. (4.5 joules) of torque. The inlet hose fitting can be weakened by overtightening.

5.4SET- UP OF SECOND STAGE

For the following adjustments, remove the cover and diaphragm.

1.Install Sherwood’s in-line adjusting tool (p/n TL102) between the orifice housing 20 and the hose assembly 24 . Use the tool to screw the adjustable orifice 22 clockwise. Watch the end of the lever 6 as you do this. As soon as the tip of the lever begins to drop, stop turning the tool. The slight amount of friction this operation produces between the orifice and the stem seat will not harm the stem seat.

2.Attach the in-line tool and the second stage to its accompanying overhauled and properly adjusted first stage, and mount on an air tank filled to between 2700 and 3500 psig (186 and 240 bar).

3.Slowly turn on the tank valve. If you hear any leaks, determine the location of the leak, shut the air off, and repair the leak as necessary.

4.Turn on the air. Use the in-line adjusting tool to turn the adjusting orifice 22 counter-clockwise until you hear a slight hissing. Then turn the adjusting orifice clockwise just enough to stop the hissing. HINT: A slight clockwise turn past the point where the hissing just stops will reduce wear and tear on regulators used heavily in rental or training situations.

5.Depress the lever assembly in the second stage five or six times to get the internal parts seated in their proper positions. Listen for any hissing. Adjust if necessary.

6.After setting the adjusting orifice, check the relationship between the diaphragm wear plate and the tip of the lever assembly. To do this, use the Sherwood lever height gauge and adjusting tool (p/n TL123). Use the tool as a gauge by laying it across the top of the case as shown in Photo #4.

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