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96389-08.2019-DGbFEIRu
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Accessories
8.1 Capacity regulation
(
retrofit kit item no. 81570)
The compressor output can be reduced for EX-HG44e to 50 % and for EX-HG56e to 66 %. The capacity
regulation works on a cylinder bank. It is necessary to replace a cylinder cover (included in the kit)
for retrofitting.
The explosion-protected magnetic coil for LR 14 is available in the Ex e mb design (encapsulation,
increased safety). The electrical wiring within the explosion risk area has to be carried out via a separate
terminal box that is designed in an approved ignition protection type M16 x 1.5 (e.g. Ex e).
For the installation, use heat-resistant lines with a temperature resistance of at least 140 °C.
Wiring of the magnetic coil has to be static and mechanically protected.
During assembly and installation, the requirements of EN 60079-14 and the EN 60079-17 have to
be observed. In addition, national laws, instructions (BetrSichV) or regulations have to be observed.
Additional installation instructions and installation/deinstallation instructions can be obtained from
the accompanying kit documentation.
Terminal cross-section of magnetic coil: 3 x 1.5 - 2.5 mm
2
Mountable cable diameter: 7 - 9 mm
INFO
The gas velocities and pressure conditions of the refrigerating
plant change in operation with capacity regulation: Adapt the
suction line run and dimensioning correspondingly, do not set
control intervals too closely (steady state condition of the ref-
rigeration plant must be reached), continuous operation in the
control stage is not recommended (uneconomical).
Electrical control of the solenoid valve: Opened de-energized
(corresponds to 100 % compressor output).
ATTENTION
The device may be used only within the data specified on the type
plate. Changes to the device are not permitted.
A fuse (max. 3 x l
B
accordance with IEC 6 0127-2-1) corresponding
to the rated current must be placed in front of every valve actua-
ting magnet as short-circuit protection. The rated voltage of the
fuse must be equal to or greater than the rated voltage of the val
-
ve actuation magnets. The ability of the fuses to switch off must
be greater than or equal to the maximum assumable shortcircuit
current at the installation location.
The EC type examination certifications must be observed.
ATTENTION Valve magnets are only operational, if they are mounted on the
valve belonging to them.
