Taylor-wharton XL-55 Manuel d'utilisateur télécharger pdf (Page 14)

Regulator Removal or Replacement Procedure

1. Close manual Pressure Building Valve.

2. Vent the container to atmospheric pressure.

3. Loosen and remove both the tube connections on the pressure building and econo-

mizer output sides of the regulator.

4. Remove the regulator from the container by unscrewing the valve body and elbow from

the output of the Pressure Building Valve.

5. Repair the regulator and readjust its setpoint using the bench test setup.

6. To install a replacement or readjusted regulator, apply Teflon tape to the elbow on the

container and thread the valve body onto the elbow.

7. Reconnect the tube connections to the regulator and tighten.

8. Pressurize the container and check it for leaks.

Regulator Adjustment – Bench Procedure

Assemble the regulator adjustment fixture, and the regulator to be adjusted, as shown in

the accompanying illustration.

1. Leak test joints between the high pressure cylinder and the dump valve. Joints must

be leak free before proceeding.

2. Close the on/off valve and the Dump valve.

3. Slightly open the high pressure cylinder valve.

4. Set the high pressure regulator above the desired set point for the Pressure Building

setpoint.

5. Slowly open the on/off valve and observe the downstream pressure gauge.

6. When the regulator under test closes, the P.B. set point may be read on the down-

stream pressure gauge.

7. Close the on/off valve, and open the Dump valve.

8. To reset the regulator, loosen the lock nut on the adjusting screw. Raise the setpoint

by turning the adjusting screw clockwise; lower the setpoint by turning the screw

counter-clockwise. After adjustment, repeat steps 5 and 6 to check the setting before

reinstalling the regulator on the liquid container.

NOTE:

The regulator has

directional gas flow.

The arrow on the

regulator body must

point in direction

indicated in the Bench

Adjustment Fixture

illustration.

Regulator

Bench

Adjustment

Fixture

NOTE:

The economizer

portion of the

regulator has already

opened approximately

20 psig (1.4 /138 kPa)

below the pressure

building setpoint.

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 24 25

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Taylor-wharton XL-55 Manuel d'utilisateur Page 14

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