3
&LAMCO
M-K Compressor Expansion Automat
Installation and operating instructions
Transport (continued)
Once the automat has been removed from its packaging, it must be set up under safety measures
to avoid being damaged, tipped or shaken. Only use permitted load lifting devices.
Depending on the transport method and the size of the expansion automat, various types of
packaging may be used.
Unless otherwise contractually agreed, the packaging meets the packaging guidelines of
Flamco STAG GmbH.
Storage
Interim storage can also take place while packed. Conditions for this are: a closed, frost free room
(dry..60...70 % relative humidity), free of vibrations, protected against heat and direct sunlight.
Vessels or equipment parts that have been removed from the packaging must be placed in their
fi nal position.
The stability is to be ensured and the stacking of equipment should be avoided.
3. Product description
Methodology (Symbol)
Changes in the volume of the operating water )a* caused by temperatur
e changes in closed
heating or climate contr
ol systems generate differ
ent levels in the water compartment of the
expansion automat. The pr
essur
e in the gas compartment of the automat caused by this is a
measurable value that is continuously r
ecorded by a pressur
e sensor and transmitted via a signal
cable to a contr
ol unit.
In the event of any difference, a comparison of these actual values with the programmable
nominal values leads to the contr
ol of a compressor or pressure r
elief valve, which is linked with
the gas compartment by a common pr
essure control tube.
In this way, the valve is opened as the level increases during system heating to relieve pressur
e
(pr
essure reduction) and the compr
essor is switched on as the system cools and the level falls
(pr
essure increase).
A hystereses )b* may be set for controlling the valve or compressor, which ensur
es the
maintenance of the set system pr
essure of a heating or climate control system with a modifi
able,
small tolerance.
The levels r
ecorded by a level sensor and assessed by the controller result, as in the case of the
system pressure, to display values and once limit values have been reached, to control signals
that enable an additional evaluation or the actuation of other units.
By choosing dif
fer
ent nominal sizes of vessel, the option to connect several vessels, the selection
of dif
ferent compr
essor capacities or operating modes and by changing the nominal values, the
M-K compr
essor
- expansion automats can be adjusted to the operating behaviour of a heating or
climate contr
ol system.
)a*
Water types whose constituent materials do not pose any hazard to the operational readiness
and do not damage or impr
operly infl uence (e.g. heating water) water
-keeping parts of the
Automat (e.g. pr
essure-bearing components, diaphragm, vessel connection,...)
)b* Switch difference to the nominal value, only changes to the nominal value can be assessed.
Small hystereses: the advantage is a small deviation from the nominal value, the disadvantage
is a high switch frequency
.
Large hyster
eses: the advantage is a low switch frequency
, the disadvantage is a large deviation
fr
om the nominal value.
The programmable setting range on the M-K expansion automat, this switch differ
ence,
is 0.1 – 0.5 bar for as well the compr
essor (pressure increase), as for the pressure r
elief valve
(pressure reduction). Standard models have a preset of 0.2 bar (total lag of 0.4 bar).
Equipment
The equipment components of the M-K expansion automat meet the safety requir
ements of the
r
elevant EC directives and the specialist standards to be applied.
Compliance is confi rmed by means of conformity declarations.
The construction of the pressure vessels is designed in accordance with Directive 97/23/EC )c*
and under consideration of the German AD Information Sheets )d*.
Examination and cleaning openings for inspections are pr
ovided on the basis of practical
experience (taking German standar
ds into consideration).
The conformity label CE0045 (on the type plate) identifi es the Notifying Body at which the conformity
evaluation process according to Article 10 of this Directive has been tested and confi rmed.
In line with the scope of use according to regulations, the corro
sion allowance is 0 mm.
This allowance may be higher , depending on the or
der.
)c* Directive of the European Parliament and Council for the harmonisation of legal pr
ovision of
member states on pr
essure devices. Offi cial Journal of the European Communities L181.
)d* Technical safety requirements for normal operation conditions, prepared by the
associations that cooperate in the Arbeitsgemeinschaft Druckbehälter (AD).
Published by: Verband der technischen Überwachungs- Vereine e.V., 45038 Essen.
Pressure vessel
Diaphragm
(Gas pressure)
Gas compartment
Symbol
Heating
Water compartment
(Water pressure)
sensor
Pressure
or climate
control
system
Compressor
Controller
M
sensor
Level
Valve
18502426 broch Flexcon M-K_UK.indd 318502426 broch Flexcon M-K_UK.indd 3 13-07-2006 08:55:2513-07-2006 08:55:25
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