Taylor-Wharton EasyCarb - Manual (Page 10)

10
Field Adjustment Procedure . For adjustment on the container:
1. Close pressure building isolation valve and use valve.
2. Relieve pressure in the pressure building loop by opening the compression fitting
near the pressure building regulator.
3. Re-tighten fitting opened in step 2.
4. Loosen the lock-nut and turn (counter-clockwise) the adjusting screw on the
pressure building regulator all the way out.
5. Open the upstream pressure building isolation valve.
6. Turn the adjusting screw clockwise until the container pressure reads: 125 psig
(8.6 bar/862 kPa).
7. Tighten the lock-nut on the regulator adjustment.
8. Open the use valve.
Pressure Building Regulator Bench Adjustment Procedure. Assemble the
pressure building regulator adjustment fixture, and regulator to be adjusted, as shown
in the accompanying illustration.
1. Close the On/off valve, and the Dump valve.
2. Set the high pressure regulator above the desired setpoint for the Pressure
Building regulator.
3. Crack and open the high pressure cylinder valve.
4. Slowly open the On/ off valve and observe the pressure gauge.
5. When the regulator under test opens, the setpoint may be read on the Pressure
Gauge.
6. Close the On/off valve, and open the Dump valve.
7. To reset the regulator, loosen the lock-nut on the adjusting screw. Raise pressure
by turning the adjusting screw clockwise; lower pressure by turning the screw
counter-clockwise. After adjustment, repeat steps 4 and 5 to check the setting
before reinstalling the regulator on the easycarb
™.
CAUTION:
Internal orifices in pressure
regulators used with CO2 are
subject to the formation of dry
ice if excessively cold gas or
extremely high flow rates are
used. If this condition occurs,
it is usually an indication of a
leak in the equipment or
plumbing downstream of the
easycarb™ system. Check for
leaks and make repairs as
necessary. If no leak is found,
and ice formation continues,
your application may require
increasing system output by
installing an external vaporizer
or second easycarb™ unit.
Regulator Bench
Adjustment Fixture
Note:
Pressure in the container must
be above the desired pressure
building setting.
Note:
One-half turn of the adjusting
screw will raise or lower the
setpoint approximately 35 psig
(2.4 bar/241 kPa).