Advertisement
CAUSES
1. No gas flows through the Regulator and the High Pressure Gauge does not
indicate pressure (or if no High Pressure Gauge is present).
a. Inlet or Inlet Filter is plugged.
b. Empty Supply Cylinder.
2. No gas flows through the Regulator and the High Pressure Gauge does indicate
pressure (or if no High Pressure Gauge is present).
a. Damaged Adjusting Mechanism or
missing components.
b. Adjusting Knob not installed
correctly.
c. Outlet Connection plugged.
d. Broken Adjusting Spring.
e. Broken Seat Stem.
3. Gauge(s) do not indicate pressure but gas flows through the Regulator.
a. Defective Gauge(s).
4. Regulator does not deliver in its designed delivery pressure range.
a. Incorrect Adjusting Spring used
during repair.
b. Damaged Adjusting Mechanism or
missing components.
5. Regulator hums or clatters while flowing.
a. Missing Friction Damper.
b. Missing Bottom Guide.
c. Flow exceeds Regulator capacity.
d. Restriction upstream of the
Regulator.
ESS7/EST4/ESL4/ELC4
TROUBLESHOOTING
POSSIBLE CORRECTIVE ACTIONS
Blow 40-45 PSIG of air through the Filter in
reverse direction of the normal gas flow.
Replace the Cylinder.
Check the Drive Screw, Guide Bushing and
Thrust Washer – insure they are installed
correctly and moving freely in the Bonnet.
Make sure the square of the Drive Screw is
properly mated into the square in the
Adjusting Knob.
Inspect and clear the Outlet Connection of
any debris.
Replace the Adjusting Spring.
Replace the Seat Assembly.
Replace Gauge(s).
Replace with correct Adjusting Spring.
Check the Drive Screw, Guide Bushing and
Thrust Washer – insure they are installed
correctly and moving freely in the Bonnet.
Install a Friction Damper.
Install the Bottom Guide.
Reduce flow to below the maximum rating of
the Regulator.
Inspect system and remove restriction.
- 27 -
SECTION 3
Advertisement
