Draining The Boiler - FULTON RB Series Installation, Operation And Maintenance Manual

Fulton Ltd
3.4

DRAINING THE BOILER

Your local regulations could state boiler water above 43 °C must not be discharged into the drain.
Boilers with manual blowdown valves
1. Ensure the boiler is cold.
2. Isolate the boiler electrics at the isolator on the control box door.
3. Isolate the feedwater tank and the feedwater pumps.
4. Open the drain valve in the boiler and the boiler air vent (if fitted) allowing air into the boiler.
5. Open the blowdown vessel drain valve.
6. Open all valves in the drain lines.
(Skid Units/Plant Rooms, have internal drainage systems which require the same procedures).
Boilers with automatic blowdown systems
1. The boiler should not be under pressure.
The boiler should be cold.
2. Close the blowdown isolation valve.
3. Using a flat-head screwdriver, locate manual blowdown button (labelled as A in Figure. 16),
push the Manual Blowdown Button up and make a quarter turn clockwise, this will lock the
button in position and open the blowdown valve.
4. Using the blowdown isolation valve to throttle the flow, drain the boiler.
Note: Skid units and plant rooms have internal drainage systems which require the same procedures.
A
RB-RBC-IOMM-2015-1
!
CAUTION
ALWAYS check your local regulations.
Figure. 16 - Automatic Blowdown Valve
OPERATION - 3
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