EP18-72-IOMM-2015-7
Fulton Ltd
Page 26
MAINTENANCE - 4
4.3.1
MAIN BOILER BLOWDOWN
1. Start the boiler and generate not more than 10 psi of steam (see
Section 3.3 Starting the
Boiler
).
2. Switch Pump and Element switches OFF.
3. Fully OPEN the boiler blowdown valve for not more than 5 seconds, or as recommended by
the water treatment specialist.
4. CLOSE the blowdown valve.
5. Resume normal operation by switching Pump and Element switches ON.
Note: Where high levels of suspended solids are produced, longer and/or more frequent blowdown may be
required.
Feedwater
non-return valve
Boiler blowdown
valve
Boiler feedwater
stop valve
Figure. 11 - Blowdown valve
4.3
BLOWDOWN PROCEDURES
Keep the boiler, elements, water level gauge (sight glass) and interconnecting pipework free from
sludge and scale build-up by following these blowdown procedures.
Note: Where a boiler is operating continuously at steam pressure, advice should be sought from Fulton Service
Department regarding the appropriate blowdown procedure.
