Clayton Steam Generator model EO-100-1M
PAGE 23 / 70
Instruction Manual, doc.nr.: MAN18206 Rev A PSC
•
To restart system, open steam outlet valves, water supply valve and automatic blow down valves and
start generator. If low-level alarm occurred during the shut down period, run feedpumps and/or
circulation pumps for two hours to fill up the system.
•
Fired Clayton generators and exhaust gas boilers can be equipped for fully automatic wet shut down
procedure in this context.
6.6.2.2
If feedwater tank is not installed at top level of installation
For shut downs of maximum two weeks
Follow above described procedure.
For shut downs of more then two weeks: if feedtank remains pressurized
Follow procedure below
.
•
Bring system under steam pressure
•
If content of feedwater tank is not sufficient to fill up the system, raise water level before starting this
procedure or contact Clayton.
•
For longer shut down periods, bring oxygen scavenger level in feedwater tank up to 4 times normal
working level.
•
Shut down burners.
•
Close drain valves and automatic blowdown valves.
•
Close off supply water to feedwater tank.
•
Gradually close steam outlet valves
(do not create overpressure)
•
Fill up system with water using feedpumps.
•
Check oxygen scavenger level in system on a weekly basis. If oxygen scavenger level drops below
normal working level, add oxygen scavenger to feedwater and run feedpumps for two hours.
•
Whenever feedtank is refilled, check alkalinity
.
If needed bring alkalinity up to normal level while
running feedpumps and/or circulation pumps.
•
To restart system, run feedpumps and/or circulation pumps for two hours to fill up the system.
•
Then open steam outlet valves, water supply valve and automatic blow down valves and start
generator.
For shut downs of more then two weeks: if feedtank does not remain pressurized
Follow procedure below.
•
Prepare nitrogen connection to system
•
Bring system under steam pressure
•
If content of feedwater tank is not sufficient to fill up the system, raise water level before starting this
procedure or contact Clayton.
•
For longer shut down periods, bring oxygen scavenger level in feedwater tank up to 4 times normal
working level.
CAUTION :
In this case, do not start burners nor apply hot exhaust gasses to system before
filling up the system, this could cause serious damage to the boiler.
CAUTION :
Never start burners nor apply hot exhaust gasses to system before filling up the
system, this could cause serious damage to the boiler.
