FULTON VMP Series - Page 74

VMP-IOMM-2018-2
Fulton Ltd
Page 66
TROUBLESHOOTING - 6
6.2 TROUBLESHOOTING OIL BOILER
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Problem Cause Remedy
7. Boiler will not
maintain pressure
1. Oil tank empty Rell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lter.Removeandclean.
Check for slipping or broken coupling, tighten or replace.
Check for seized pump shaft. Replace the pump.
5. Dirtyue CheckueforCarbonbuild-uporblockage.Cleanue
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ush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ush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.