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4.13 Burner controls (LME71... with PME71.901...)
Warnings
To avoid accidents, material or environmental
damage, observe the following instructions!
The LME71... are safety devices! Avoid opening
WARNING
or modifying it, or forcing its operation.
Riello S.p.A. cannot assume any responsibility for
damage resulting from unauthorised interven-
tions! Also the safety notes contained in other
chapters of this document must be respected!
The installation and operation of the machine
should be carried out only by qualified personnel.
For the purposes of the safety notes in this docu-
WARNING
ment, by qualified personnel is meant people au-
thorised to commission, ground and identify
electric devices, systems circuits conforming to
safety practices and norms.
All the operations (assembly, installation, maintenance, etc.)
should be carried out by qualified personnel.
Before modifying the wiring in the connection area, fully dis-
connect the system from the power supply (omnipolar sepa-
ration). Check the system is not powered and cannot be
inadvertently restarted. Failure to do this will lead to the risk
of electrocution.
Ensure protection against the risks of electrocution by pro-
viding adequate protection at the terminal connection of the
burner (for example, using blind terminals for the inputs and
the unused outputs). Failure to do this will lead to the risk of
electrocution.
The space where the program module is placed (Fig. 10) is
defined as a connection area and is therefore protected
against accidental contact when the module is not present.
If the housing or the area next to the operator panel is dam-
aged, the unit should be immediately switched off. Failure to
do this will lead to the risk of electrocution.
Press the operator panel buttons only with your hands, with-
out using any equipment or pointed objects. Damage to the
operator panel fill leads to the risk of electrocution.
To ensure the safety and reliability of the LME71... system, the
following instructions must also be followed:
–
Avoid conditions which may promote condensation and hu-
midity.
Otherwise, before switching on again, make sure that the en-
tire control box is perfectly dry! Failure to do this will lead to
the risk of electrocution.
–
Static charges must be avoided since they can damage the
control box's electronic components when touched.
The formation of condensation, ice and the infiltra-
tion of water must absolutely be avoided!
Otherwise, the safety functions could be compro-
WARNING
mise leading to a risk of electrocution.
Technical description of the burner
15
GB
S8593
Program module
S8673
Assembly notes
Make sure that the relevant national safety standards are
respected
The standard LME7 unit should be fixed with M4 (UNC32) or
M5 (UNC24) fixing screws, respecting a maximum tightening
torque of 1.8 Nm and using all 3 fixing points.
The additional assembly surfaces of the housing have the
purpose of improving the mechanical stability.
The should rest on the assembly surface to which the unit is
fixed.
The planarity of the assembly surface should be within a tol-
erance range of 0.3 mm.
Fig. 9
Fig. 10
20160576
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