Riello RL 70/M Instrucciones De Instalación, Funcionamiento Y Mantenimiento página 29

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 maxi-
mum 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 time,
1
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
Rusty pump internal parts
Noisy pump, unstable pressure
Pump unprimes after prolonged
pause
Pump leaks light oil
Maintenance
PROBABLE CAUSE
1 - A limit or safety control device is open . . . . . . . . . . . . . .
2 - Control box lock-out . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 - Oil pressure switch intervenes (see page 19) . . . . . . . .
4 - Motor protection tripped . . . . . . . . . . . . . . . . . . . . . . . . .
5 - No electrical power supply . . . . . . . . . . . . . . . . . . . . . . .
6 - Control box fuse blown. . . . . . . . . . . . . . . . . . . . . . . . . .
7 - Contact II of servomotor does not operate . . . . . . . . . . .
8 - Pump is jammed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9 - Defective motor command control device . . . . . . . . . . .
10 - Defective control box . . . . . . . . . . . . . . . . . . . . . . . . . . .
11 - Defective electrical motor . . . . . . . . . . . . . . . . . . . . . . . .
12 - Flame simulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13 - Flame sensor short-circuit . . . . . . . . . . . . . . . . . . . . . . .
14 - 2-phase power supply thermal relay trips. . . . . . . . . . . .
15 - Contact I of servomotor does not operate . . . . . . . . . . .
16 - Fault in flame detection circuit . . . . . . . . . . . . . . . . . . . .
17 - Contact III of servomotor does not operate . . . . . . . . . .
18 - No fuel in tank; water on tank bottom. . . . . . . . . . . . . . .
19 - Inappropriate head and air gate valve adjustments . . . .
20 - Light oil solenoid valves fail to open. . . . . . . . . . . . . . . .
21 - Nozzle clogged, dirty, or deformed. . . . . . . . . . . . . . . . .
22 - Dirty or poorly adjusted firing electrodes . . . . . . . . . . . .
23 - Grounded electrode due to broken insulation . . . . . . . .
24 - High voltage cable defective or grounded . . . . . . . . . . .
25 - High voltage cable deformed by high temperature. . . . .
26 - Ignition transformer defective . . . . . . . . . . . . . . . . . . . . .
27 - Erroneous valves or transformer electrical connections.
28 - Defective control box . . . . . . . . . . . . . . . . . . . . . . . . . . .
29 - Pump unprimed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30 - Pump/motor coupling broken . . . . . . . . . . . . . . . . . . . . .
31 - Pump suction line connected to return line . . . . . . . . . .
32 - Valves up-line from pump closed . . . . . . . . . . . . . . . . . .
33 - Filters dirty: line - pump - nozzle . . . . . . . . . . . . . . . . . .
34 - Incorrect motor rotation direction . . . . . . . . . . . . . . . . . .
35 - Defective flame sensor or control box . . . . . . . . . . . . . .
36 - Flame sensor dirty . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
37 - Poorly adjusted head . . . . . . . . . . . . . . . . . . . . . . . . . . .
38 - Poorly adjusted or dirty firing electrodes . . . . . . . . . . . .
39 - Poorly adjusted fan air gate: too much air . . . . . . . . . . .
40 - Nozzle unsuited for burner or boiler . . . . . . . . . . . . . . . .
41 - Defective nozzle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
42 - Inappropriate pump pressure . . . . . . . . . . . . . . . . . . . . .
43 - Control device TR does not close . . . . . . . . . . . . . . . . .
44 - Defective control box . . . . . . . . . . . . . . . . . . . . . . . . . . .
45 - Check if cause is in pump or in the fuel supply system
46 - Water in tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
47 - Air has entered the suction line . . . . . . . . . . . . . . . . . . .
- Depression value too high (higher than 35 cm Hg):
48 - Tank/burner height difference too great . . . . . . . . . . . . .
49 - Piping diameter too small . . . . . . . . . . . . . . . . . . . . . . . .
50 - Suction filters clogged . . . . . . . . . . . . . . . . . . . . . . . . . .
51 - Suction valves closed. . . . . . . . . . . . . . . . . . . . . . . . . . .
52 - Paraffin solidified due to low temperature . . . . . . . . . . .
53 - Return pipe not immersed in fuel . . . . . . . . . . . . . . . . . .
54 - Air enters suction piping . . . . . . . . . . . . . . . . . . . . . . . . .
55 - Leakage from sealing organ. . . . . . . . . . . . . . . . . . . . . .
27 GB
SUGGESTED REMEDY
Adjust or replace
Reset
Adjust pressure switch or eliminate overpressure
Reset thermal cut-out
Close all switches - Check connections
Replace (2)
Adjust cam II or replace servo-motorcontrol box
terminals 11 - 8
Replace
Replace
Replace
Replace
Replace control box
Replace sensor
Reset thermal cut-out when third phase is re-con-
nected
Adjust cam I or replace servo-motorcontrol box
terminals 9 - -8
Replace control box
Adjust cam III or replace servomotorcontrol box
terminals 10-8
Top up fuel level or suck up water
Adjust
Check connections; replace coil
Replace
Adjust or clean
Replace
Replace
Replace and protect
Replace
Check
Replace
Prime pump and see "Pump unprimes" (53-54)
Replace
Correct connection
Open
Clean
Change motor electrical connections
Replace sensor or control box
Clean
Adjust
Adjust
Adjust
See Nozzle Table
Replace
Adjust
Adjust or replace
Replace
Feed the burner from a tank located nearby
Suck water from tank bottom with separate pump
Tighten connectors
Feed burner with loop circuit
Increase
Clean
Open
Add additive to light oil
Bring to same height as suction pipe
Tighten connectors
Replace pump
2915996