Algas SDI Direct Fired F6-ASME, Operation & Maintenance Manual

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Appendix A
Thermowell leak test procedure
Thermowell leak test procedure:
1. Close regulator supply valve.
2. Allow for burner and pilot to consume any remaining gas in the tubing.
3. Make sure that all the sources of ignition within 50ft are extinguished and that reignitor switch is OFF.
4. Loosen elbow fitting nut to ensure stainless tubing will rotate.
5. Remove nut at fitting on the inlet to the thermostat and rotate stainless steel inlet tubing away from the
thermostat.
6. Remove pilot tube fitting at the thermostat and allow for space to rotate thermostat.
7. Remove thermocouple at the thermostat and allow for space to rotate thermostat.
8. Loosen burner supply tube fitting nut, pull out the tubing and allow for space to rotate thermostat.
9. Rotate thermostat counter-clockwise while ensuring that thermowell stays attached to the heat
exchanger.
10. Remove thermostat from thermowell.
11. Ensure that there is at least 125-150 psig of pressure available within the vaporizer during leak testing.
12. Spray soap and water solution to the inside of the front vaporizer panel opening around thermowell and
heat exchanger connection.
13. Use flashlight if necessary, to observe for leaks.
14. Repair any leaks before continuing.
15. Repeat leak test to ensure no leaks are present.
16. Reassemble removed parts, open regulator supply valve and leak test tubing connections.
17. It is now safe to start your vaporizer.
1. CLOSE REULATOR
SUPPLY VALVE
2. LOOSEN NUT
3. REMOVE NUT
4. REMOVE FITTING
5. REMOVE
THERMOCOUPLE
6 .REMOVE NUT