8
G
. 1
0.
03
.0
9
14.Functional control of flame monitoring control box
The following checks must be carried out after the commissioning and maintenance of the burner:
1.
Warm restart with covered flame failure controller:
The control box must indicate a fault once the safety time has elapsed.
2. Burner start-up with externally lit flame failure controller, for example fluorescence lamps, lighters,
bulbs (daylight is not sufficient!):
Due to the flame simulation, the control box must indicate a fault during the pre-aeration time.
3. Normal start-up -Dim the flame failure controller if the burner is in operation during the post-ignition
time:(e.g. pull out and cover the flame failure controller!)
TF 830/LOA 24:Ignition must switch on, the machine indicates a fault once the safety
time has elapsed.
DKW 972/976: The fuel feed must immediately be interrupted and a post-aeration initiated
for 60 sec. A new start must then be carried out, the automatic firing device must indi
cate a fault at the end of the safety time.
Safety and switching functions
In the event of a flame failure during operation, the fuel feed immediately switches off and the machine attempts to
start-up with pre-aeration and post-ignition. If no flame is generated, the machine indicates a fault after the safety time
has elapsed. In either case, a restart always takes place after a power failure. In the event of flame simulation during
the pre-aeration time, the control box indicates a fault after the safety time has elapsed.
The control box must only be inserted or removed when the main switch is at "OFF" and the 7-pole
connector is disconnected, as 230 V are supplied to the lower part of the control box.
Flame simula-
tion must not be permitted on the photoresistor or on the flame failure controller (e.g. via an inspection glass
or glowing chamotte). Only then is a fault-free functioning of the system guaranteed.
TF 830 and DKW 972/976 and LOA 24
Satronic:
TF 830
DKW
972/976
LOA 24
171B27
t
v1
= pre-ignition time + pre-aeration
12 sec.
20 sec.
13 sec.
t
s
= safety time
10 sec.
5 sec.
10 sec.
t
n
= post-ignition time
20 sec.
7 sec.
15 sec.
Post-aeration after a flame failure
none
60 sec.
none
Waiting time after a fault shutdown
90 sec.
none
50 sec.
Photoresistor (flame failure controller)
MZ 770
QRB 1
min. photocurrent [µA]
24
70
70
Anlauf mit Flammenbildung
Freigabethermostat Ölvorwärmer EIN
Ventilator
Zündung
Magnetventil
Flammenwächter
Störlampe
t
s
Störung
Ventilator
Zündung
Magnetventil
Flammenwächter
Störlampe
t
v1
t
s
Betrieb
Anlauf ohne Flammenbildung
t
n
Fault
Operation
Start-up without flame formation
Start-up with flame formation
Ventilator
Ignition
Magnetic valve
Flame failure controller
Fault lamp
T
h
er
m
o
st
at
r
el
e
ase
o
il
p
re
h
ea
te
r
O
N
Ventilator
Ignition
Magnetic valve
Flame failure controller
Fault lamp