Page 3
Qualified Repair Technician. The term “Qualified Repair Technician” refers to repair personnel capable of servicing apparatus in strict accordance with all applicable Victor “Parts & Service Bulletins” and literature. Improper service or repair, or modification of the product, could result in damage to the product or injury to the operator.
SERVICE & REPAIR PROCEDURES ESS3 & ESS4 Single Stage EDGE™ Series Regulators DISASSEMBLY PROCEDURES Refer to the exploded view for reference numbers [Shown in brackets] 1. Mount the Inlet Swivel Assembly Plug in the Bench Vise and firmly attach the Regulator. 2.
ASTM G-127 “Standard Guide for the Selection of Cleaning Agents for Oxygen Systems” For metal parts, Victor brand suggests using CCI Envirospray Liquid, used per the manufacturer's instructions, followed by a hot water rinse and thorough drying. Additional information can be found at http://www.ccichemical.com.
Page 9
Attach the Relief Valve to a 450 PSIG source of oil-free air or dry nitrogen. b. Slowly pressurize the Relief Valve, increasing to the recommended blow-off pressure VICTOR listed below. Note that Relief Valves are stamped with their nominal set pressure, in case you’re unsure which Relief Valve you have.
Page 11
centers itself in a recessed pocket in the top of the Body. Don’t forget the Thrust Washer! Regulator function will be impaired without it. 18. Install the Bonnet onto the Body. Take care while slipping the Bonnet down over the internal components –...
TEST PROCEDURES WARNING! For your safety, and the safety of others: • Always test with oil-free air or dry nitrogen only. • Always wear eye protection while testing a Regulator. • Always perform all of the following test procedures after reassembling a Regulator. 1.
Page 13
8. LEAK TEST a. With the Test Gun closed and the Manifold Valve open, adjust the Regulator to deliver PSIG. b. Close the Manifold Valve and turn the Adjusting Knob one turn counterclockwise. c. Observe the Low Pressure and High Pressure Gauges for five (5) minutes: 1.
TROUBLESHOOTING CAUSES POSSIBLE CORRECTIVE ACTIONS 1. No gas flows through the Regulator and the High Pressure Gauge does not indicate pressure. a. Inlet or Inlet Filter is plugged. Blow 40-45 PSIG of air through the Filter in reverse direction of the normal gas flow. b.
Page 15
CAUSES POSSIBLE CORRECTIVE ACTIONS Regulator experiences excessive drop. a. Friction Damper too tight. Replace the Friction Damper and/or Gland. b. Wrong size orifice in Test Gun. Insure the correct orifice is installed in the Test Gun - size #52 (.0635”). c.
Page 16
CAUSES POSSIBLE CORRECTIVE ACTIONS 10. Rapid pressure drop on both High and Low Pressure Gauges. a. Loose connection – Bonnet to Tighten Bonnet Screws using 12-15 ft-lbs. Body. Follow the sequence shown in STEP 19 FIGURE 1 of the Assembly Procedure. b.
Page 17
Qualified Repair Technician. The term “Qualified Repair Technician” refers to repair personnel capable of servicing apparatus in strict accordance with all applicable Victor “Parts & Service Bulletins” and literature. Improper service or repair, or modification of the product, could result in damage to the product or injury to the operator.
Page 18
EXPLODED VIEW - ESS7 HIGH-FLOW L.P. GAUGE H.P. GAUGE INFO DECAL RETAINING RING INLET SWIVEL INLET NUT PLUG OUTLET INLET FILTER BODY SEAT GUIDE FRICTION DAMPER Diaphragm BACKUP RING Assembly RELIEF VALVE GLAND Back-Up Ring (See DETAIL A) Orientation Body In Assembly VALVE SPRING Bonnet...
Page 22
SERVICE & REPAIR PROCEDURES ESS7, EST4, ESL4 & ELC4 Single Stage EDGE™ Series Regulators DISASSEMBLY PROCEDURES Refer to the exploded views for reference numbers [Shown in brackets] 1. Mount the Inlet Swivel Assembly Plug (hereafter called “Inlet Plug”) in the Bench Vise and firmly attach the Regulator.
Page 23
ASTM G-127 “Standard Guide for the Selection of Cleaning Agents for Oxygen Systems” For metal parts, Victor brand suggests using CCI Envirospray Liquid, used per the manufacturer's instructions, followed by a hot water rinse and thorough drying. Additional information can be found at http://www.ccichemical.com.
Page 24
Attach the Relief Valve to a 450 PSIG source of oil-free air or dry nitrogen. b. Slowly pressurize the Relief Valve, increasing to the recommended blow-off pressure VICTOR listed below. Note that Relief Valves are stamped with their nominal set pressure, in case you’re unsure which Relief Valve you have.
Page 25
10. Apply only Loctite® #222 threadlocker to the Outlet Connection [27] threads. Install the Outlet Connection into the Body and torque to 15 ft-lbs. 11. At this point, thoroughly blow out the Body assembly with pressurized oil-free air or dry nitrogen to insure it is completely free of chips and debris.
Page 26
17. Install the Adjusting Spring [22], preassembled Adjusting Mechanism and Thrust Washer [14] onto the Regulator Body. Don’t forget the Thrust Washer! Regulator function will be impaired without it. 18. Install the Bonnet [15] onto the Body. Take care while slipping the Bonnet down over the internal components –...
Page 27
TEST PROCEDURES WARNING! For your safety, and the safety of others: • Always test with oil-free air or dry nitrogen only. • Always wear eye protection while testing a Regulator. • Always perform all of the following test procedures after reassembling a Regulator. 1.
Page 28
8. ESS7 LEAK TEST (When HP/LP Gauges are present): a. With the Test Gun closed and the Manifold Valve open, adjust the Regulator to deliver PSIG. b. Close the Manifold Valve and turn the Adjusting Knob one turn counterclockwise. c. Observe the Low Pressure and High Pressure Gauges for five (5) minutes: 1.
Page 29
TROUBLESHOOTING CAUSES POSSIBLE CORRECTIVE ACTIONS 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. Blow 40-45 PSIG of air through the Filter in reverse direction of the normal gas flow.
Page 30
CAUSES POSSIBLE CORRECTIVE ACTIONS Regulator experiences excessive drop. a. Friction Damper too tight. Replace the Friction Damper and/or Gland. b. Wrong size orifice in Test Gun. Insure the correct orifice is installed in the Test Gun - size #52 (.0635”). c.
Page 31
CAUSES POSSIBLE CORRECTIVE ACTIONS 10. Rapid pressure drop on both High and Low Pressure Gauges. a. Loose connection – Bonnet to Tighten Bonnet Screws using 12-15 ft-lbs. Body. Follow the sequence shown in STEP 19 FIGURE 1 of the Assembly Procedure. b.
Need help?
Do you have a question about the EDGE ESS3 and is the answer not in the manual?
Questions and answers