Traid Triumph 1000, Operating And Maintenance Manual

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TRIAD Boiler Systems, Inc.
West Chicago, IL
www.triadboiler.com
10 Out of service operations
10.1 Shutdown
When shutting down a boiler, switch the burner to manual, set the burner to low fire for a few moments
and then turn the burner off. As the boiler flow drops toward zero, it will probably be necessary to close
the main feedwater isolation valve and manually regulate drum water level with the bypass valve. Most
flow control valves will not shut off tightly. When the drum level stabilizes with no water flowing, the
boiler may be isolated. When the non-return valve, if any, on the water outlet has closed, close inlet valves
and outlet valve. Run down the stem on the non-return valve to hold the disk on its seat. Where two stop
valves are used, open the drain between and see that it is clear and bleeds off the pressure in the line.
After pressure falls, slowly open the drum vents to prevent formation of a vacuum that might cause
subsequent leakage at gasketed joints.
10.2 Boiler taken out of service
When a boiler is taken out of service, it should be laid-up using either the wet or dry procedure.
NOTE: TRIAD does not warranty boilers out of operation that are not properly laid up for extended periods
of time. If the boiler could be subject to freezing temperatures when out of service, the boiler must be
laid up dry.
If draining the boiler is not practical, the laid up wet procedure may be used. Wet boiler layups are not
recommended for periods longer than 30 days. TRIAD does not Warranty boilers laid up wet for more
than 30 days.
ALWAYS KEEP THE FUEL SUPPLY VALVE(S) SHUT OFF IF THE BURNER IS SHUT DOWN FOR AN EXTENDED
PERIOD OF TIME.
10.3 Boiler laid up dry
1. Allow the boiler to cool and shut of the water supply.
2. Drain, clean, and dry the boiler thoroughly (both fire and water sides)
3. Fuel and electricity to the unit shall be shut off. Use proper tag and lock out procedures.
4. An oil coating of fire side metal surfaces is beneficial when the boiler is not used for extended periods
of time. This will prevent oxidization of the metal. Care should be taken to avoid putting oil on the
firebox thermal blankets.
5. Place desiccant inside the boiler, primary junction box, and burner control panel