Antivibrators Assembly (Silent-Blocks) - Carrier 50FF 020-093 Installation, Operation And Maintenance Instructions

Package rooftop units
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7 - POSITIONING AND INSTALLATION
Preparation of the ground
It is necessary to ensure that the surface where the unit is going
to be installed in completely fl at. Any defect in the preparation of
the unit support surface translates into stresses on the structure,
which may result in its deformation. The unit must be perfectly
level when installed.
These units can be installed on the fl oor or on a brick curb or
steel profi le. Based on the fi xing solution defi ned in the installation
project, it will be necessary to plan the placement in the base of
threaded rods in the expectation that the unit supports can be fi xed
later on. To do so, it is recommended that a template be made
with the heights corresponding to the fi xings.
Foresee appropriate damping devices in these fi xings to
ensure that noise and vibration transmission is avoided
(consult the reactions in the support in paragraph 7.5).
Removing forklift guards
On units with lower supply and return, the fork-lift truck guards
must be removed. This is also the case when the units are to be
connected onto a roofcurb.
These guide rails are designed to be removed from both sides of
the unit, as required. They are secured to the unit using 4 clamping
pieces with M8 screws.
Attention: a free space equal to the width of the machine is
required for revoming the rails, bigger than the "Recommended
service clearance".
Important: the transport guards also must be removed before
installling. These guards are fi xed with M4.8 self-tapping screws.
Transport guards
Forklift guards
Clamping piece and M8 screw

7.3 - Antivibrators assembly (silent-blocks)

Although the installer is the one who must decide on a case-by-
case basis the best way to place the unit in the ultimate location,
always in observation of the handling standards that have been
described, below is a proposed assembly sequence that may
facilitate the operation, keeping in mind that the sequence
performed in the installation shall be the one most suitable to the
solution chosen for each particular case based on the existence
(or lack thereof) of brick curb, type of silent-blocks used, etc.
12
In the event of assembling directly on silent-blocks to the ground,
it is recommended that a template of the unit's footprint with the
anchoring points of the silent-blocks be made, as described in the
paragraph "Preparation of the ground".
With the help of the crane or the forklift truck, the unit will be raised
to a suffi cient height that the silent-blocks can be screwed into its
base (see Chapter 5).
M12 metric threads have been provided
for their placement in the supports
(consult the fixing for antivibrators in
paragraph 7.5). All models will use M12
screws with a maximum length of 60 mm.
A hex key 19 or Allen wrench 10 will be
used for this operation based on the type
of screw used.
The optional silent-blocks that can be supplied for these units
must be placed perpendicular to the unit, as shown in the following
image.
The screws required for the installation of the silent-blocks are
not supplied from the factory.
These screws must have an adequate quality to withstand the
stresses to which they will be subjected, and they must be adapted
to the installation site, either on a brick curb or a steel profi le.
Note: If the silent-block hole has a diameter greater than M12, a
washer can be used to adjust the size.
M12
50FF/FC
020 to 047
B1 / R1 / RW
052 to 062
B2 / B3 / BX / BP / BA / BT / BB / BW / R2 / RP
070 to 099
Silent-block
72mm
A
A (mm)
182
182
240
240

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50fc 020-099

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