EP18-72-IOMM-2015-7
Fulton Ltd
Page 19
OPERATION - 3
3.5
DRAINING THE BOILER
CAUTION
Your local regulations could state boiler water above 43 °C must not be discharged into the drain.
ALWAYS check your local regulations.
!
Boilers with manual blowdown valves
1. Ensure the boiler is cold.
2. Isolate the boiler electrics at the isolator on the front access panel.
3. Close the boiler feedwater stop valve.
4. Open the main steam valve and the feedwater tank drain valve.
5. Open the boiler blowdown valve.
6. Open all valves in the drain lines.
Boilers with automatic blowdown systems
1. The boiler should not be under pressure.
2. The boiler should be cold.
3. Close the blowdown isolation valve.
4.
Using a flat-head screwdriver, locate manual blowdown button (labelled as
A
in
Figure. 10
),
push the Manual Blowdown Button up and make a quarter turn clockwise, this will lock the
button in position and open the blowdown valve.
5.
Using the blowdown isolation valve to throttle the flow, drain the boiler.
Note: Skid systems and plantrooms have internal drainage systems which require the same procedures.
A
Figure. 10 - Automatic Blowdown valve
