Azbil AUD100 Series User Manual

E4
● Monitoring pipe material
•Useamonitoringpipewithablackinsidewall.
Do not use stainless steel or galvanized pipes.
Using such materials can result in internal diusion of UV
rays and similar processes, causing ame detection to be af-
fected by factors other than the ame.
•ToavoidthermaleectsontheAUD120, use a material with
low thermal conductivity.
● Size of the monitoring pipe
For the detector to receive the optimal amount of UV radia-
tion, its eld of vision should be as wide as possible. To that
end, do the following:
(1) Use the widest monitoring pipe possible. Select at least 50
to 80A pipe, and connect the AUD120 with a reducer.
(2) Make the monitoring pipe as short as possible.
(However, remember that the ambient temperature of the
AUD120 should not exceed 105°C.)
● Mounting space
Leave sucient space to allow easy maintenance and inspec-
tion. Also, if the base of the lead wires is strongly bent because
of a lack of space, etc., the insulation may deteriorate.
■ Adjustment and inspection
Aer wiring, do the following checks.
● Measuring the Flame Current and Voltage
(1) Using the FSP136A100 Analog Flame Meter
•Ifmeasuringtheamecurrent:
Insert the ame current measurement plug of the FS-
P136A into the ame current measurement jack of the
burner controller.
•Ifmeasuringtheamevoltage:
Connect the red and black ame voltage measurement
probes from the FSP136A100 to the + and – ame volt-
age output terminals respectively on the burner controller.
(2) Check the operation of the AUD120 by exposing the
AUD15 to a lighter ame or to ultraviolet rays from an ul-
traviolet lamp.
Handling Precautions
•Before using an open ame, check that there is no am-
mable gas in the vicinity.
(3) Mount the AUD120 on the monitoring pipe temporarily.
(4) Light the burner.
(5) To determine the optimal monitoring position, mea-
sure the ame current/voltage with the FSP136A100
analog ame meter while slowly moving the moni-
toring pipe. Select the position with the highest pos-
sible stable ame current and voltage which is also
within the specied range for the burner controller.
Fluctuation of the reading within the width of the indi-
cator needle is OK. For the specied ame current and
voltage range for the burner controller, see the manual
of the burner controller.
● Pilot Turndown Test
WARNING
If the ame detector is set so that it detects a pilot ame
that is too small to ignite the main ame, the AUD120
will not be able to recognize (for example) a ame fail-
ure in the main burner. In this case fuel would continue
to be supplied, causing a serious explosion hazard. To
prevent this, be sure to do the pilot turndown test care-
fully.
If it is necessary to do this test repeatedly, completely
shut down all equipment each time the test is nished,
and completely discharge unburned gas or oil that has
accumulated in the ducts and combustion chamber. If
unburned gas or oil is not expelled completely, an ex-
plosion may occur.
CAUTION
This test should be done only by a trained and experi-
enced professional.
e purpose of this test is to determine whether, under the
least favorable conditions of gas pressure and air pressure, a
pilot ame detected by the ame detector will reliably light the
main burner.
For the procedure of the pilot turndown test, follow the in-
structions in the burner controller manual or equipment man-
ufacturer manual.
● Ignition spark response test
WARNING
Make sure that this device does not detect ultraviolet
rays other than those of the burner ame. If it does, a
false ame signal will endanger combustion safety.
Make sure that the ame relay (normally relay 2K) is not af-
fected by the spark generated by the ignition transformer.
is test examines whether this device responds to ultraviolet
rays of the ignition transformer.
For the procedure of the ignition spark response test, follow
the instructions in the burner controller manual or equipment
manufacturer manual.
■ Final mounting of the monitoring pipe
•When the equipmentis operating properly with the specied
ame voltage output aer all adjustments have been completed,
turn OFF the power to the equipment, remove the AUD15 and
AUD120, and weld the monitoring pipe permanently.
•MounttheAUD15 and AUD120 on the monitoring pipe and do
all of the wiring.
•Itisbesttomakeaseparatenalcheckofthemonitoringpipe,
including the welded parts, using an airtightness test, etc.
■ Label attachment
Attach the eective operation time label to a place where it can be
seen easily. Attach the expiration date label to the socket.
■ Final inspection
To ensure proper burner control, do a trial run of at least one
complete operation cycle of the combustion equipment to verify
that all control operations function correctly.

Azbil AUD100 Series Specifications

General

Brand	Azbil
Model	AUD100 Series
Category	Security Sensors
Language	English