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3.8
Burner controls (LME71...)
Warning notes
To avoid injury to persons, damage to property or
the environment, the following warning notes must
be observed!
WARNING
The LME71... are safety devices! Do not open, in-
terfere with or modify the unit.
Riello S.p.A. does not assume responsibility for
damage resulting from unauthorized interference!
Additional safety notes contained in other chapters
of this document must be observed as well!
Only qualified personnel are allowed to install and
operate the equipment.
Qualified personnel in the context of the safety-re-
WARNING
lated notes contained in this document are persons
who are authorized to commission, ground and tag
devices, systems and electrical circuits in compli-
ance with established safety practices and stan-
dards.
All activities (mounting, installation and service work, etc.)
must be performed by qualified personnel.
Before making any wiring changes in the connection area,
completely isolate the plant from mains supply (all-polar dis-
connection). Ensure that the plant cannot be inadvertently
switched on again and that it is indeed dead. If not observed,
there is a risk of electric shock hazard.
Ensure protection against electric shock hazard by providing
adequate protection for the burner control's connection termi-
nals (e. g. with dummy plugs for inputs and outputs not used).
If not observed, there is a risk of electric shock hazard.
The space where the program module (Fig. 6) is located is
defined as plugging space and therefore back-off-hand-proof
when the program module is not fitted.
If the housing or the area near the operating panel is dam-
aged, the unit must immediately be put out of operation. If not
observed, there is a risk of electric shock hazard.
Press the buttons on the operating panel only manually with-
out using any tools or pointed objects. If the film of the operat-
ing panel is damaged, there is a risk of electric shock hazard.
To ensure safety and reliability of the LME71... system, the follow-
ing points must also be observed:
–
condensation and ingress of humidity must be avoided.
Should such conditions occur, make sure that the unit will be
completely dry before switching on again! If not observed,
there will be a risk of electric shock.
–
Static charges must be avoided since they can damage the
unit's electronic components when touched.
Condensation, formation of ice and ingress of water
are not permitted!
If not observed, there is a risk of impairment of safe-
WARNING
ty functions and of electric shock hazard.
Technical description of the burner
Program module
Mounting notes
Ensure that the relevant national safety regulations are com-
The LME7... basic unit must be secured with fixing screws M4
11
GB
S8593
S8673
plied with
(UNC32) or M5 (UNC24), observing a maximum tightening
torque of 1.8 Nm and using all 3 fixing points.
The additional mounting surfaces on the housing are provided
to improve mechanical stability.
These must fully rest on the mounting surface to which the unit
is secured.
The flatness of that mounting surface must be within a toler-
ance band of 0.3 mm.
Fig. 5
Fig. 6
20051011
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