SKYFOLD CLASSIC, ZENITH AND MIRAGE RETRACTABLE WALLS
10
COMPONENTS
The glass panel’s construction also provides superior acoustic properties. According to
industry norms, the single laminated glass panels alone have a Sound Transmission Class
(STC) rating of 36 (Rw 36). The Mirage wall as a system has an STC rating of 33 (Rw 33) in
accordance with ASTM E90 (ISO 140-3).
Cables
The cables that lift and support the Skyfold wall are aircraft-grade wire cables of the highest
strength and quality. These cables are sized to offer a high factor of safety. Each of these
cables is attached to and lifted by a separate drum and each drum is keyed into the solid-
steel line shaft. In the unlikely event that a cable fails, the other cables will not be affected
(see
Figures 2 and 5
).
Sheaves (Pulleys)
As illustrated in
Figure 2
, the lifting cables wrap around the sheaves, thereby providing an
additional pick-up point
End seals
The flexible end-seal membranes fill the vertical gap between the Skyfold panels and the
fixed walls to form a tight acoustic seal (see
Figure 3a
). On the Mirage model, fixed brush
and sweep seals glide on the wall track to close the gap between the wall track and the
lifting mechanisms, and thus provide a visual barrier (see
Figure 3b
).
The Skyfold wall halts its descent when the lower limit switch stops the lifting motor,
at which point the vertical end seals are activated automatically. It is not necessary to
maintain pressure on the operator switch once this limit switch is tripped.
The end seals deploy and retract in approximately eight (8) seconds. The end seals retract
automatically when you raise the wall from its fully closed position. As a default setting,
the wall will not begin to rise until the end seals are completely retracted. At the time of
installation, the wall can be programmed to start rising once the end seals have cleared of
the fixed walls (see
Figure 3a
). Conversely, the brush and sweep seals on the Mirage model
do not retract.
The Skyfold wall can lose some of its acoustic properties if a seal does not activate or if a
gap is still present after the seals were activated. Moreover, an un-retracted seal dragging
on the fixed wall can cause damage to the seal (see
Figures 2
and
3a
).
Warning
➢
Do not operate your Skyfold wall if some or all of the vertical end seals do not
retract. If either condition occurs, contact your authorized local Skyfold dealer
for service. Please note, on the Mirage model, the brush and sweep seals do
not retract.
