Filter Maintenance - Dungs MBDLE 403 B01 Instrucciones De Instalación, Uso Y Mantenimiento

LOW GAS PRESSURE SWITCH ADJUSTMENT
Adjust the gas pressure switch (8) by adjusting the graduated scale's wheel, after carrying out all the
other adjustments of the burner with the gas pressure switch adjusted at the beginning of the scale.
Let the burner work at the required output.
Close slowly the gate valve until the pressure, measured on the gas pressure switch gauge, comes down
of 5 - 6 mbar with regard to the working value.
Rotate slowly the gas pressure switch handle until the operation of the same gas pressure switch and
the resultant burner shut-down. Open completely the gate valve.

FILTER MAINTENANCE

Said operation must be performed by skilled personnel.
Check the filter at least once a year!
The filter can be changed without removing the train. If the filter is replaced frequently, it is best to replace
the fastening screws, too.
The maintenance procedure is as follows:
cut off the gas flow by closing the gate;
unscrew the screws and remove the filter cover;
remove the filter and replace it with a new one;
refit the cover, screw it on and tighten screws without overtightening;
test operation and check for leaks.
WIRING SCHEME,
The gas train is factory set for connection following the wir-
ing diagram given in figure 2.
ATTENTION
Before starting any work, the system's power supply
must be cut off.
For burners with terminal boards, you will need to remove
the train connection's 6-pin plug following the instructions
given below.
Unscrew the plug's screws and remove its cover.
Unscrew the terminal screws and remove the connect-
ing wires.
Connect the connecting wires to the burner's terminal
board, following the instructions given in the relevant
manual carefully.
NOTE:
For RS, RLS, RS/M -series burners:
you must remove the 6-pin plug from the train connection and replace it with the 6-pin plug supplied with the
burner following the wiring diagram given in the burner's instruction manual.
2626
(see fig. 2)
Fig. 2
Grey
socket
D5115
3 GB
Black
socket