172-65379M-07 (LEX8-TZ) 6 Oct 2021
11
16. Wait 10 seconds to allow any loose scale to be flushed internally. Be aware of
any external steam leak including the outlet connection if opened to atmosphere.
Be careful to not come in contact with any steam that is discharging from an open
outlet connection. If any steam leaks are detected somewhere other than the
outlet piping, immediately close the inlet isolation valve, then the outlet isolation
valve, and repair the source of leakage.
17. Close the inlet isolation valve.
18. Close the outlet isolation valve.
19. Wait until the pressure between the inlet isolation valve and the product equals
atmospheric pressure (when the product body temperature cools to room
temperature).
20. Hold the cover with one wrench and use another wrench to slowly loosen the cap
nut carefully checking for any steam leaks that might occur. In the event steam
leaks are detected, immediately stop the work and proceed with maintenance
referring to
“Disassembly/Reassembly” section.
21. Remove the cap nut.
22. Slowly turn the adjusting screw clockwise (to tighten) to return to the original
position checked in
step “10” above.
23. Hold the adjusting screw in place with a flat-head screwdriver and tighten the
locknut securely.
24. Replace the cap nut and tighten to the proper torque (see
“Table of Tightening
Torques
”).
25. First fully open the outlet isolation valve.
26. Slowly open the inlet isolation valve carefully checking for any steam leaks. In the
event steam leaks are detected, immediately close the inlet isolation valve, then
the outlet isolation valve, and repair the source of leakage.
27. Check the temperature setting by observing an inline temperature sensor or by
measuring the temperature at the product inlet wrench flat at least 30 minutes
after supplying steam with the new settings. The product set temperature will be
approximately 10 to 20
C higher than the temperature reading on the product
body surface.
28. If the resultant temperature is no as desired, use the above instructions for
adjusting temperature settings. (S
ee “Adjusting the Set Temperature”)