Fault - Probable Cause - Suggested Remedy - Riello RL 55/M BLU Manuel D'entretien

SYMBOL (1) FAULT
The burner does not start
The burner does not start and a
function lock-out occurs
The burner starts but stops at
maximum air damper setting
The burner starts and then goes
into lock-out
The burner remains in pre-purging
phase
After pre-purge and the safety
1
time, the burner goes to lock-out
and the flame does not appear
The flame ignites normally but the
burner locks out when the safety
time has elapsed
Firing with pulsations or flame
detachment, delayed firing
The burner does not pass to 2nd
stage
Uneven fuel supply
Internally rusted pump
Noisy pump, unstable pressure
Pump unprimes after prolonged
pause
Pump leaks light oil
Smoke in flame - dark Bacharach
- yellow Bacharach
Dirty combustion head
During operation, the burner stops
I
in lock out
(1) When the burner does not fire or comes to a halt following a fault, the symbol which appears on control box 24)(A)p.8 indicates the type of problem.
(2) The fuse is located in the rear part of the control box 24)(A)p.8. A pull-out fuse is also available as a spare part which can be fitted after breaking the tang on the
panel which holds it in place.
PROBABLE CAUSE
1 - A limit or safety control device is open . . . . . . . . . . . . . . . . Adjust or replace
2 - Control box lock-out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reset control box
3 - Oil pressure switch intervenes (see page 23) . . . . . . . . . . . Adjust pressure switch or eliminate overpres-
4 - Motor protection tripped . . . . . . . . . . . . . . . . . . . . . . . . . . . Reset thermal cut-out
5 - No electrical power supply . . . . . . . . . . . . . . . . . . . . . . . . . Close all switches - Check connections
6 - Control box fuse blown . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace (2)
7 - Contact II of servomotor does not operate, . . . . . . . . . . . . . Adjust cam II or replace servo-motor
control box terminals 11 - 8
8 - Pump is jammed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
9 - Defective motor command control device . . . . . . . . . . . . . . Replace
10 - Defective control box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
11 - Defective electrical motor . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
12 - Flame simulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace control box
13 - Photocell short-circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace photocell
14 - Missing phase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reset thermal cut-out
thermal cut-out trips
15 - Contact I of servomotor does not operate, . . . . . . . . . . . . . Adjust cam I or replace servomotor
control box terminals 9-8
16 - Fault in flame detection circuit. . . . . . . . . . . . . . . . . . . . . . . Replace control box
17 - Contact III of servomotor does not operate, . . . . . . . . . . . . Adjust cam III or replace servomotor
control box terminals 10-8
18 - No fuel in tank; water on tank bottom . . . . . . . . . . . . . . . . . Top up fuel level or suck up water
19 - Inappropriate head and air damper adjustments . . . . . . . . Adjust
20 - Light oil solenoid valves fail to open . . . . . . . . . . . . . . . . . . Check connections; replace coil
21 - Nozzle clogged, dirty, or deformed . . . . . . . . . . . . . . . . . . . Replace
22 - Dirty or poorly adjusted firing electrodes . . . . . . . . . . . . . . . Adjust or clean
23 - Grounded electrode due to broken insulation . . . . . . . . . . . Replace
24 - High voltage cable defective or grounded . . . . . . . . . . . . . . Replace
25 - High voltage cable deformed by high temperature . . . . . . . Replace and protect
26 - Ignition transformer defective . . . . . . . . . . . . . . . . . . . . . . . Replace
27 - Erroneous electrical connections of valves or transformer . Check
28 - Defective control box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
29 - Pump unprimed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Prime pump and see "Pump unprimes" (53-54)
30 - Pump/motor coupling broken . . . . . . . . . . . . . . . . . . . . . . . Replace
31 - Pump suction line connected to return line . . . . . . . . . . . . . Correct connection
32 - Valves up-line from pump closed . . . . . . . . . . . . . . . . . . . . Open
33 - Filters dirty: line - pump - nozzle . . . . . . . . . . . . . . . . . . . . . Clean
34 - Incorrect motor rotation direction . . . . . . . . . . . . . . . . . . . . Change motor electrical connections
35 - Defective photocell or control box . . . . . . . . . . . . . . . . . . . . Replace photocell or control box
36 - Dirty photocell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Clean
37 - Poorly adjusted head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjust
38 - Poorly adjusted or dirty firing electrodes . . . . . . . . . . . . . . . Adjust
39 - Poorly adjusted fan air gate: too much air . . . . . . . . . . . . . Adjust
40 - Nozzle unsuited for burner or boiler . . . . . . . . . . . . . . . . . . See Nozzle Table
41 - Defective nozzle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
42 - Inappropriate pump pressure . . . . . . . . . . . . . . . . . . . . . . . Adjust
43 - Control device TR does not close . . . . . . . . . . . . . . . . . . . . Adjust or replace
44 - Defective control box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
45 - Check if cause is in pump or . . . . . . . . . . . . . . . . . . . . . . . . Feed burner from tank
fuel supply system
46 - Water in tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Suck water from tank bottom with separate pump
47 - Air has entered the suction line . . . . . . . . . . . . . . . . . . . . . Tighten connectors
- Depression value too high (higher than 35 cm Hg):
48 - Tank/burner height difference too great . . . . . . . . . . . . . . . Feed burner with loop circuit
49 - Piping diameter too small . . . . . . . . . . . . . . . . . . . . . . . . . . Increase
50 - Suction filters clogged . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Clean
51 - Suction valves closed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Open
52 - Paraffin solidified due to low temperature . . . . . . . . . . . . . . Add additive to light oil
53 - Return pipe not immersed in fuel . . . . . . . . . . . . . . . . . . . . Bring to same height as suction pipe
54 - Air enters suction piping . . . . . . . . . . . . . . . . . . . . . . . . . . . Tighten connectors
55 - Leakage from sealing organ . . . . . . . . . . . . . . . . . . . . . . . . Replace pump
56 - Not enough air. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjust head and fan gate
57 - Nozzle worn or dirty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
58 - Nozzle filter clogged . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Clean or replace
59 - Erroneous pump pressure. . . . . . . . . . . . . . . . . . . . . . . . . . Adjust
60 - Flame stability disk dirty, loose, or deformed . . . . . . . . . . . Clean, tighten in place, or replace
61 - Boiler room air vents insufficient . . . . . . . . . . . . . . . . . . . . . Increase
62 - Too much air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjust head and fan gate
63 - Nozzle or filter dirty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replace
64 - Unsuitable nozzle delivery or angle . . . . . . . . . . . . . . . . . . See recommended nozzles
65 - Loose nozzle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tighten
66 - Impurities on flame stability disk . . . . . . . . . . . . . . . . . . . . . Clean
67 - Erroneous head adjustment or not enough air . . . . . . . . . . Adjust, open air damper
68 - Blast tube length unsuited to boiler . . . . . . . . . . . . . . . . . . . Contact boiler manufacturer
69 - Dirty or defective photocell . . . . . . . . . . . . . . . . . . . . . . . . . Clean or replace
34
SUGGESTED REMEDY
sure
when third phase is re-connected
located near burner