Azbil AUR355, User Manual

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iv
CAUTION
The pilot turn-down test should be carried out only by specialists who have knowledge and
skills concerning combustion equipment and combustion safety.
If the combustion equipment is restarted after a safety shutoff, do all of the inspection steps
described in Chapter 5. Trial Operation and Adjustment .
When doing a maintenance inspection of the burner, be sure to do the pilot turn-down test.
Inspection must be done at least once a year.
Inspect the combustion equipment periodically in accordance with the instructions given in
the manual provided by the equipment manufacturer.
When cleaning the burner, clean the flame detector also.
When transporting or storing this device, temporarily remove it from the sub-base and pack
it in the box it was originally shipped in. Transportation while attached to a panel, etc., may
cause damage.
Do not connect a load that exceeds the rating stated in the specifications to the flame output
(terminals 11–12). The non-replaceable fuse between these terminals will burn out. If the fuse
burns out, replace this device.
Flame output (terminals 11–12) is the safe output of this device. However, this device does
not detect the short circuit of the flame output (terminals 11–12). Check that the flame
output (terminals 11–12) is opened before carrying out flame detection with the flame
output (terminals 11–12).
Flame output (with start check)(terminals 6–7), and flame relay N.C. output (terminals 6–5)
are the compatible outputs of AUR300/350. No fuse is built in these outputs. Be sure to install
a fuse or circuit breaker externally to guard against a short circuit of the load. If a short circuit
of the load occur, this product should be replaced because there is an increased probability of
contact failure.
Flame output (with start check)(terminals 6–7), and flame relay N.C. output (terminals 6–5)
are outputs for replacing the equipment which was performing manual ignition by previous
product AUR300/350. These outputs do not conform to any safety standard. Use flame output
(terminals 11–12), when this device performs the flame detecting of a burner.