VMP-IOMM-2018-2
Fulton Ltd
Page 66
TROUBLESHOOTING - 6
6.2
TROUBLESHOOTING
OIL BOILER
CONTINUED ON NEXT PAGE
Problem
Cause
Remedy
7. Boiler will not
maintain pressure
1. Oil tank empty
Refill the oil tank. A slight delay in the re-priming of the
fuel pump may cause the burner programmer to require
resetting before the boiler operates satisfactorily.
2. Oil nozzle
Check for blocked nozzle. Clean or replace.
3. Oil valve
Check voltage between oil valve leads at terminal block to
be sure oil valve is getting power.
4. Oil pump
Check for blocked strainer or filter. Remove and clean.
Check for slipping or broken coupling, tighten or replace.
Check for seized pump shaft. Replace the pump.
5.
Dirty flue
Check flue for Carbon build-up or blockage. Clean flue
passages with brush.
6. Pressure control
Disconnect all power to the controller. Disconnect the
wires from the controller. Place an OHM meter between
the switch terminals. Lower the set point of the controller,
the switch should make. Raise the set point and recheck,
switch should break. If the controller operates improperly,
replace it.
7. Scale build-up in boiler
Consult Fulton.
8. Refractory bricks
Check the bricks are not plugged with soot, cracked
or broken into pieces. Clean and replace as
required.
9. Boiler size
Boiler may be under sized for the application. Consult
Fulton.
8. Boiler is surging
1. Steam traps blowing through.
Check traps, clean or replace as required.
2. Scale build-up or lime deposits. Call water treatment company and
consult the factory.
3. Too much water treatment
Dump the return tank and flush the system.
Test the water treatment.
4. Too much of a load.
Check total equipment load against the boiler output.
Decrease amount of equipment being used.
9. Boiler rumbles
1. Draft problem
Check draft is neutral. Consider installing a barometric
damper if the draft is too strong.
2. Too much main air.
Adjust main air.
3. Air or water in the oil.
Check tank and lines for water or leaks.
10. Boiler pushing
steam
1. Steam traps
Check traps. Clean or replace as required.
2. Too much water treatment.
Dump the return tank and flush the system.
Test the water
treatment.
11. Pump will
not cut off
1. Dirty probes.
Clean or replace as required
2. Relay failed.
Check relay is secure on its base, if so, replace the relay.
3. Earth connection.
Check for tightness and clean.
12. Pump runs but does
not put
water in the
boiler
1. Vapour locking of pump.
Allow system to cool down, check steam traps of pump
and check to be sure return lines are not insulated. Check
return tank temperature, if it is above 82 °C vapour locking
of the pump will occur. Inspect check valves. Clean
and replace as needed. Replace pump with multi-stage
centrifugal pump able to cope with 121 °C.
2. Blocked feed water line
Check feedwater line is not blocked, clean as required.