Faults - Possible Causes - Solutions - Riello PRESS GBW BIO Installation, Use And Maintenance Instructions

9

Faults - Possible causes - Solutions

FAULT
The burner does not start
After pre-purge the burner goes to lock out and
the flame does not appear
The burner goes to lock out right after flame
appearance
Firing with pulsations or flame detachment
The burner does not pass to 2nd stage
or fuel passes to 2nd stage but air remains in
1st
Uneven fuel supply
Internally rusted pump
Noisy pump, instable pressure
Pump unprimes after prolonged pause
Pump leaks gas oil
Faults - Possible causes - Solutions
PROBABLE CAUSE
- No electrical power supply ....................................................
- A limit or safety control device is open..................................
- Control box lockout ...............................................................
- Pump is jammed ...................................................................
- Erroneous electrical connections ..........................................
- Defective control box.............................................................
- Defective electrical motor...................................................... Replace
- Defective capacitor ...............................................................
- Photocell short-circuit............................................................
- Light is entering or flame is simulated...................................
- No fuel in tank; water on tank bottom....................................
- Inappropriate head and gate valve adjustments ...................
- Gas oil solenoid valve fails to open.......................................
- Nozzle clogged, dirty, or deformed .......................................
- Dirty or poorly adjusted firing electrodes...............................
- Grounded electrode due to broken insulation ....................... Replace
- High voltage cable defective or grounded.............................
- High voltage cable deformed by high temperature ............... Replace or protect
- Firing transformer defective ..................................................
- Erroneous valve or transformer electrical connections ........
- Control box defective ............................................................
- Pump unprimed.....................................................................
- Pump/motor coupling broken ................................................
- Pump suction line connected to return line ..........................
- Valves up-line from pump closed ..........................................
- Filters dirty: line - pump - nozzle ........................................... Clean
- Incorrect motor rotation direction ..........................................
- 1st stage sol. valve coil defective..........................................
- Delayed firing by electrodes or poorly adjusted head ...........
- Defective photocell or control box ......................................... Replace
- Dirty photocell .......................................................................
- Presence of electromagnetic disturbance .............................
- Poorly adjusted head ............................................................
- Poorly adjusted firing electrodes ...........................................
- Poorly adjusted fan air gate: too much air.............................
- Nozzle unsuited to burner or boiler .......................................
- Defective nozzle....................................................................
- Inappropriate pump pressure ................................................
- Control device TR does not close ......................................... Adjust or replace
- Defective control box ............................................................
- 2nd stage sol. valve coil defective.........................................
- Piston jammed in valve unit ..................................................
- Low pump pressure...............................................................
- Defective cylinder..................................................................
- Check if cause is in pump or fuel supply system ..................
- Water in tank .........................................................................
- Air has entered the suction line.............................................
- Depression value too high (higher than 35 cm Hg):
- Tank/burner height difference too great ................................
- Piping diameter too small......................................................
- Suction filters clogged ........................................................... Clean
- Suction valves closed............................................................
- Paraffin solidified due to low temperature .............................
- Return pipe not immersed in fuel ..........................................
- Air enters suction piping........................................................
- Leakage from sealing organ..................................................
35
Close all switches - Check fuses
Adjust or replace
Reset control box
Replace
Check connections
Replace
Replace
Replace photocell
Eliminate light or replace control box
Top up fuel level or suck up water
Consult Manual
Check connections; replace coil
Replace
Adjust or clean
Replace
Replace
Check
Replace
Prime pump and see "Pump unprimes"
Replace
Correct connection
Open
Change motor electrical connections
Replace
Adjust
Clean
Use the radio disturbance protection kit
Adjust according to Manual
Adjust according to Manual
Adjust
See Nozzle Table; reduce 1st stage
Replace
Adjust according to Manual
Replace
Replace
Replace entire unit
Increase
Replace
Feed burner from tank located near burner
Suck water from tank bottom with separate pump.
Tighten connectors
Feed burner with loop circuit
Increase
Open
Add additive to gas oil
Bring to same height as suction pipe
Tighten connectors
Replace pump
GB
SUGGESTED REMEDY
20033097