baltur BT 40 DSG Manual De Instrucciones página 49

of the 2nd flame thermostat
among them and settle the 1st
and 2nd stage switch in 2nd
stage position.
7) Adjust the screw which restricts
the stroke of the hydraulic piston
controlling the air shutter of
the 2nd flame; unscrew it that
amount which is deemed to be
necessary to burning fuel.
Remarks: Before turning the
adjusting screw, loosen the lock nut
and after completing the adjustment,
tighten it up again.
8) Now connect the burner again; it
will start and automatically switch
to the 2nd flame according to the
present program.
9) With the burner operating with
the 2nd flame, adjust the amount
of air necessary to ensure an
efficient combustion with the
screw mentioned under item 7.
Combustion test should be made
using appropriate instruments.
Make the regulation so as to
obtain a certain amount of carbon
dioxide (CO ) in the smoke,
2
varying from min. 10% to max.
13% with a smoke number not
exceeding 2 (Bacharach scale).
CHECKS
After starting up the burner, check
the safety devices (photoresistance,
block, thermostats).
1) The photocell is the flame control
device and so it should trip if
the flame extinguishes during
operation (this check should
be made after at least 1 minute
from lighting up).
2) The burner should be capable
of blocking itself and remain so
when a normal flame does not
come on during start-up cycle and
within the preset on control box.
AIR SETTING SCHEMA
The "lock-out" causes the
motor and the burner to stop
immediately and corresponding
"lock-out" warning lamp lights
u p . To c h e c k t h e f u n c t i o n
photoresistant-cell and lock-out
system proceed as follows:
a) Start up the burner.
b) After at least one minute,
remove the photo-cell from
its seat and pull it out and
simulate flame failure by
covering the photo-cell (use a
rag to close the window in the
photocell support).The burner
flame should go to lock-out.
If the control box model LAL
1.25 is used, a burner lock-
out will result.
c) Keep the photo-cell in the
dark and the burner will start
again, but the photo-cell does
see the light and the burner
9 / 98
00060807_200709
REV.
A Plug
B Air adjusting screw for 1st flame
C Lock nut
D Air adjusting screw for 2nd flame
E Lock nut
F Air sutter control
G Air inlet
goes to lock-out within the
time preset by control box.
The control box can be reset
only manually by pressing the
appropriate push-button.The
lock-out efficiency test should
be made at least twice.
3) To c h e c k t h e t h e r m o s t a t
efficiency, run the burner until
the water in the boiler reaches a
temperature of at least 50 °c and
then turn the thermostat control
knob to reduce the temperature
until an opening click is heard
and simultaneous stopping of
the burner. The thermostat
should trip within a maximum
tolerance of 5 to 10 °C in respect
to the control thermometer
(boiler thermometer); if not,
change the setting on the
thermostat scale to match that
of the thermometer.
N° 8614
07/01/97