FULTON VSRT-60 - Page 84

TROUBLESHOOTING - 8
Fulton Ltd
8.1 TROUBLESHOOTING
GAS BOILER
Problem
Cause
Remedy
8. Boiler will not
maintain pressure
1. Gas Supply
Check gas pressure coming into the gas train, if low
contact the gas supplier.
Check the setting on the gas valve regulator, adjust as
required. If possible meter the flow rate.
2. Dirty flue
Check flue for Carbon build-up or blockage.
3. Pressure Control
Disconnect all power to the controller. Disconnect the
wires from the controller. Connect an ohmmeter between
the switch terminals. Lower the set point of the controller,
the switch should make raise the set point and re-check,
switch should break. If the controller operates improperly,
replace it.
4. Scale build-up in boiler
Clean the pressure vessel – heavy build up may require an
acid clean – consult water treatment specialists.
5. Steam traps blowing through.
Check steam traps, clean or replace as required.
6. Boiler size.
Boiler may be under sized for the application. Consult
Fulton.
9. Boiler is Surging
(Widely fluctuating
water level in sight
glass)
1. Steam traps blowing through.
Check steam traps, clean or replace as required.
2. Contamination in boiler.
Empty boiler and feed tank.
Flush out and refill, if system operates but progressively
deteriorates, there is probably a leak somewhere in the
system.
3. Scale build-up or lime deposits.
Consult Fulton or call a water treatment specialist.
4. Too much compound (water
treatment over dose).
Dump contents of the return tank and flush the system.
Test the water.
5. High Alkalinity (high pH).
Have a water treatment specialist test the water.
6. Load exceeds boiler capacity.
Check total system load against the output of the boiler.
Decrease the load required at any one time.
10. Boiler rumbles and
pulsates
1. Poor Combustion
Check combustion readings.
2. Draft
Check draft complies with min/max parameters (Technical
Data Sheet Appendix A).
3. Too much main air.
Adjust air/gas ratio.
11. Boiler carrying over
water with the steam
1. Steam Traps.
Check steam traps, clean or replace as required.
2. Too much compound (water
treatment over dose) in the
system.
Dump contents of the return tank and flush the system.
Test the water.
3. Contamination in boiler.
Empty boiler and feed tank. Flush out and refill, if system
operates but progressively deteriorates, there is probably a
leak somewhere in the system.
Low fuel pressure.
1. Gas pressure regulator
Check and replace.
VSRT-IOMM-2019-1
Page 76