9
G
. 1
0.
03
.0
9
Photocurrent (MZ 770) measurement
Replace the measuring connector of the measuring instrument in the event of a negative deflexion!
Setting the measuring instrument to ampere measurement for DC current, measuring range up to approx. 200
µ
A!
Useful measuring accessories
Digital measuring instrument Item no. 59-20-50263
Measuring cable pair for photocurrent Item. no. 59-20-50408
14.Oil preheating unit (only GL10.1/.2-V)
The oil preheating unit is connected upstream in the program sequence of the burner and remains in opera-
tion until the oil burner is switched off by the control thermostat.
The thermostats built-in to the preheater are responsible for the cold start locking mechanism, which only
releases current to the control box after heating.
The electrical preheater is integrated into the nozzle holder and has a controlled heat output. This is adjusted
to the respective heat requirement via a PTC resistor.
15.Oil control (Option)
Measuring range:
1 to 40 l/h
Operating temperature: 0-60°C
Permissible pressure:
< 25 bar
Measurement accuracy: ± 2.5%
This multifunctional device gives information on the oil consumption, the number of burner start-ups, the
burner operating hours etc. and, in addition, warns when the oil throughput falls below the set reference value
(e.g. clogged nozzle). Via the early detection and elimination of the fault, an inefficient and environmentally
damaging burner operation can be prevented. During operation ensure that the flow rate, pressure and tem-
perature lie within the permissible limits.
A specific Oil control maintenance is usually unnecessary. The dirt trap, which is connected upstream (in the
pump or oil filter), must be cleaned during the annual burner inspection!
Caution: the display is deleted 1 day after a power failure, (e.g. switched phase). All values
are, however, saved and can be called up again after reconnection to the mains. Set and
reset functions are not possible during a power failure.
Operating mode of the mode button
A short press of the mode button calls up the individual displays in ongoing sequence. The respective mode
is displayed via a function symbol and / or the respective unit by releasing the button.
Flame failure controller
lower part
Control box
500
µ
A
or
200
µ
A