37
20034293
GB
Faults - Possible causes - Solutions
After pre-purge and the safety
time, the burner goes to lock-
out and the flame does not
appear
The solenoid VP1 allows little gas through
Increase
Solenoid valves VP1 or VP2 fail to open
Renew the coil or rectifier panel
No fuel in tank; water on tank bottom
Top up fuel level or suck up water
Inappropriate head and air gate valve adjust-
ments
Adjust
High voltage cable defective or grounded
Replace
High voltage cable deformed by high tempera-
ture
Replace and protect
Erroneous valves or transformer electrical con-
nections
Check
Pump unprimed
Prime
Pump suction line connected to return line
Correct connection
Filters dirty (on line 1 at the nozzle)
Clean
Valves up-line from pump closed
Open
Incorrect motor rotation direction
Change motor electrical connec-
tions
Gas oil solenoid valves fail to open
Check the connections and the so-
lenoid valves
Nozzle clogged, dirty, or deformed
Clean or replace
The pilot burner does not work
Check
Defective control box
Replace
Ignition electrode wrongly adjusted
Adjust
Grounded electrode due to broken insulation
Replace
Pump/motor coupling broken
Replace
Ignition transformer defective
Replace
The flame ignites normally but
the burner locks out when the
safety time has elapsed
Defective photocell or control box
Replace photocell or control box
Dirty photocell
Clean
Smoke in flame - dark Bachar-
ach
Not enough air
Adjust head and fan gate
Erroneous pump pressure
Adjust
Nozzle filter clogged
Clean or replace
Boiler room air vents insufficient
Increase
Nozzle worn or dirty
Replace
Flame disk dirty, loose, or deformed
Clean, tighten in place, or replace
Smoke in flame
(yellow Bacharach)
Too much air
Adjust head and air gate
Firing with pulsations or flame
detachment, delayed firing
Poorly adjusted head
Adjust
Poorly adjusted fan air gate: too much air
Adjust
Nozzle unsuited for burner or boiler
See Nozzle Table
Defective nozzle
Replace
Inappropriate pump pressure
Adjust
Poorly adjusted or dirty firing electrodes
Adjust
Output during ionisation phase is too high
Reduce
The burner does not pass to
2nd stage
Control device TR does not close
Adjust or replace
Defective control box
Replace
Uneven fuel supply
Check if cause is in pump or in the fuel supply
system
Feed the burner from a tank
located nearby
Rusty pump internal parts
Water in tank
Suck water from tank bottom with
separate pump
Noisy pump, unstable pres-
sure
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
GAS OIL OPERATION
SYMBOL
(1)
FAULT
PROBABLE CAUSE
SUGGESTED REMEDY
1
1
Summary of Contents for RLS 250/M
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