Normal operative cycle ignition
t2
Gas pressure switch
Motor
t1
Air pressure switch
Transformer
Gas valve
Enable 2nd stage
Flame detection
Lock out lamp
L'apparecchiatura controllo fiamma fa partire il ventilatore del bruciatore per effettuare il prelavaggio della camera di combustione,
controllando la pressione dell'aria di ventilazione tramite il pressostato aria. Al termine della preventilazione entra in funzione il tra-
sformatore di accensione generando una scintilla tra gli elettrodi e contemporaneamente si aprono le valvole del gas (valvole gas di
sicurezza VS e 1° stadio valvola lavoro VL). La sicurezza totale in caso di mancata accensione o di spegnimento accidentale viene
affidata ad una sonda di rivelazione a ionizzazione che interviene mandando in blocco l'apparecchiatura entro il tempo di sicurezza.
Nel caso di mancanza di gas o di un calo notevole di pressione il pressostato gas di minima provvede ad interrompere il funziona-
mento del bruciatore.
The SATRONIC DLG 976 control is a micro-processor control which provides information about the current opera-
tion of the burner and the cause of any faults. The information is available by reading the "flash code" at the red LED
within the lockout reset button as detailed below. By the use of additional monitoring equipment a short history of
recorded faults is also available. There are two types of additional monitoring devices available from Satronic Ltd. The
"satropen" is a small pocket reader designed to give a visual read out of status, flame current and supply voltage.
Computer software is available to allow access to the current information and stored data.
On burner failure the red LED is permanently illuminated for a period of approximately 10 seconds, followed by a
brief "dark phase", then one of the following flash codes will indicate the cause of the fault. This indication will repeate
as long as the lockout reset button is not reset.
Message
Flash-Code
waiting for air proving
switch
pre-purge (tv1)
pre-ignition (tvz)
safety time (ts)
delay 2nd stage (tv2)
running
low mains voltage
Flash-Code Key
short pulse
long pulse
short pause
.
long pause
_
LANDIS LGB 21/22 - UP CYCLE
t3
t4
t5
t6
SATRONIC DLG976 CONTROL INFORMATION SYSTEM
FAULT DISPLAY MESSAGES
.
.
.
.
.
_
_
Operative cycle with flameless
t3
t4
t2
t1
t5
Error diagnosis
Error message
lockout
safety time
air proving switch
in closed position
air proving switch
time-out
air proving switch
opened
loss of flame
Flash-Code for manual lock out
manual/external
lock out
pag.9
LB 447 Blu 500 ÷ 700 P
Rif.
Description
t1
pressure switch control time-out
t2
time-out for air pressure confirmation
t3
prewashing time
t4
safety time
t5
preignition time
t6
time-out to enable fuel 2nd valve*
DLG 976
Flash-Code
Possible fault
within lock out safety time
no flame establishment
air proving switch
contact welded
air proving switch does not
close within specified time
air proving switch opens
during start or operation
loss of flame during operation
B
Duration
9"
3"
30"
3"
3"
8"