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Building Technologies
Basic Documentation LMV5...
CC1P7550en
1 Safety notes
22.05.2018
1 Safety notes
1.1 Warnings
To avoid injury to persons, damage to property or the environment, the following
warning notes must be observed!
The LMV5 is a safety device! Do not open, interfere with or modify the unit.
Siemens will not assume responsibility for any damage resulting from
unauthorized interference!
The chapters to the LMV50, LMV51.3 and LMV52 documentation contain
additional warning notes which should also be observed when using these
system versions. After commissioning and after each service visit, check the flue
gas values across the entire load range.
Risk of explosion!
Incorrect configuration can lead to excessive fuel supply which might cause an
explosion!
Operators must be aware that incorrect settings made on the AZL5 and
incorrect settings of the fuel and/or air actuator positions can lead to dangerous burner
operating conditions.
The present Basic Documentation describes a wide choice of applications and
functions and shall serve as a guideline. The correct functioning is to be checked and
proven with the help of function tests on a test rig or on the plant itself!
∂
All activities (mounting, installation and service work, etc.) must be performed by
qualified personnel
∂
Degree of protection IP40 as per DIN EN 60529 for burner controls must be
ensured through adequate mounting by the burner or boiler manufacturer
∂
Before making any wiring changes in the connection area of the LMV5, completely
isolate the plant from mains supply (all-polar disconnection). 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
∂
Protection against electrical shock on the LMV5... and on all connected electrical
components must be ensured through adequate mounting
∂
Each time work has been carried out (mounting, installation and service work, etc.),
check to ensure that wiring is in an orderly state, that the parameters have been
correctly set and make the safety checks as described in chapter
Commissioning
notes
∂
Fall or shock can adversely affect the safety functions. Such units must not be put
into operation even if they do not exhibit any damage
∂
In programming mode, the position check of the actuators and – if installed – the
VSD (checking electronic fuel-air ratio control) is different from the check made
during automatic operation. Like in automatic operation, the actuators are still
jointly driven to their required positions. If an actuator does not reach the required
position, corrections are made until that position is reached. However, in contrast to
automatic operation, there are no time limits to these corrective actions. The other
actuators maintain their positions until all actuators have reached the positions
currently required. This is essential for setting fuel-air ratio control. This means that
during the time the ratio control curves are programmed, the person making the
plant settings must continuously watch the quality of the combustion process (e.g.
by means of a flue gas analyzer). Also, if combustion levels are poor, or in the
event of dangerous situations, the commissioning engineer must take appropriate
action (e.g. switching the system off manually)
