20033090
32
GB
Faults - Possible causes - Solutions
9
Faults - Possible causes - Solutions
FAULT
PROBABLE CAUSE
SUGGESTED REMEDY
The burner does not start
- No electrical power supply .................................................... Close all switches - Check fuses
- A limit or safety control device is open .................................. Adjust or replace
- Control box lockout................................................................ Reset control box
- Pump is jammed.................................................................... Replace
- Erroneous electrical connections .......................................... Check connections
- Defective control box............................................................. Replace
- Defective electrical motor ...................................................... Replace
- Defective capacitor ............................................................... Replace
- Photocell short-circuit ............................................................ Replace photocell
- Light is entering or flame is simulated ................................... Eliminate light or replace control box
After pre-purge the burner goes to lock out and
the flame does not appear
- No fuel in tank; water on tank bottom .................................... Top up fuel level or suck up water
- Inappropriate head and gate valve adjustments ................... Consult Manual
- Gas oil solenoid valve fails to open ....................................... Check connections; replace coil
- Nozzle clogged, dirty, or deformed........................................ Replace
- Dirty or poorly adjusted firing electrodes ............................... Adjust or clean
- Grounded electrode due to broken insulation ....................... Replace
- High voltage cable defective or grounded ............................. Replace
- High voltage cable deformed by high temperature................ Replace or protect
- Firing transformer defective................................................... Replace
- Erroneous valve or transformer electrical connections ......... Check
- Control box defective............................................................. Replace
- Pump unprimed ..................................................................... Prime pump and see “Pump unprimes”
- Pump/motor coupling broken ................................................ Replace
- Pump suction line connected to return line .......................... Correct connection
- Valves up-line from pump closed .......................................... Open
- Filters dirty: line - pump - nozzle ........................................... Clean
- Incorrect motor rotation direction........................................... Change motor electrical connections
- Solenoid valve coil defective ................................................. Replace
- Presence of electromagnetic disturbance ............................. Use the radio disturbance protection kit
The burner goes to lock out right after flame
appearance
- Delayed firing by electrodes or poorly adjusted head ........... Adjust
- Defective photocell or control box ......................................... Replace
- Dirty photocell........................................................................ Clean
Firing with pulsations or flame detachment
- Poorly adjusted head............................................................. Adjust according to Manual
- Poorly adjusted firing electrodes ........................................... Adjust according to Manual
- Poorly adjusted fan air gate: too much air ............................. Adjust
- Nozzle unsuited to burner or boiler ....................................... See Nozzle Table
- Defective nozzle .................................................................... Replace
- Inappropriate pump pressure ................................................ Adjust according to Manual
Uneven fuel supply
- Check if cause is in pump or fuel supply system................... Feed burner from tank located near burner
Internally rusted pump
- Water in tank ......................................................................... Suck water from tank bottom with separate pump.
Noisy pump, instable pressure
- Air has entered the suction line ............................................. Tighten connectors
- Depression value too high (higher than 35 cm Hg):
- Tank/burner height difference too great ................................ Feed burner with loop circuit
- Piping diameter too small ...................................................... Increase
- Suction filters clogged ........................................................... Clean
- Suction valves closed ............................................................ Open
- Paraffin solidified due to low temperature ............................. Add additive to gas oil
Pump unprimes after prolonged pause
- Return pipe not immersed in fuel .......................................... Bring to same height as suction pipe
- Air enters suction piping ........................................................ Tighten connectors
Pump leaks gas oil
- Leakage from sealing organ .................................................. Replace pump
Smoke in flame
- dark Bacharach
- Not enough air ...................................................................... Adjust head and fan gate according to Manual
- Nozzle worn or dirty............................................................... Replace
- Nozzle filter clogged .............................................................. Clean or replace
- Erroneous pump pressure..................................................... Adjust to between 10 - 14 bar
- Dirty fan ................................................................................ Clean
- Flame stability spiral dirty, loose, or deformed ...................... Clean, tighten in place, or replace
- Boiler room air vents insufficient ........................................... Increase
- yellow Bacharach
- Too much air ......................................................................... Adjust head and fan gate according to Manual
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Страница 40: ...Subject to modifications RIELLO S p A I 37045 Legnago VR Tel 39 0442 630111 http www rielloburners com...