405-OM-UK-001 v1.0
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09 Jul 2020
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Stuck Closed
If the Xvent is stuck in the closed position and will not open electrically, the mechanisms can be disconnected to allow the lid to be
opened manually. As the building will be watertight, manually overriding the Xvent from the closed position is best done when an
engineer is on hand to resolve the issue. Manual override needs to be done externally, so access to the rooftop will be required
(ensure that all necessary safety precautions are followed). Before commencing manual override, ensure that a support system has
been put into place (see the options above). Do not attempt to manually override the product without a safe working platform.
Remove the plugs on the sides of the lid frame (two each side) and unscrew the override screws using a pin torx driver (see the
diagram in the previous section). This will disengage the mechanisms from the lid and allow the lid to be manually opened (take
care
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it will be heavy). Do not attempt to lift the lid without a safe working platform. Once open, use a support system to keep the
lid open. Any necessary work can now be carried out.
Please contact Glazing Vision for further assistance
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the product will no longer be operational. Once the issue is resolved, the
product must be re-initialised.
Re-Initialisation
This is a safety critical product and must be commissioned by Glazing Vision personnel or Approved Installers.
If the manual override has been used the product requires re-initialising. As the Xvent is a safety critical product, this will need to be
done by a Glazing Vision Engineer. To do this refer to instructions in the installation manual using the below information as reference.
Please contact Glazing Vision for assistance.
The following instructions should be followed when setting up the mechanisms for the first time or after replacing them due to
repair. First check that the unit is receiving the correct power from the Power Supply Unit (PSU). Use a multimeter to check the
supply voltage by disconnecting the connection to the batteries and placing the multimeter probes across the DC Input Terminals
of the DR UPS40 switching device. You should get a reading of 27.2V DC. If the reading is higher or lower than this figure, then the
output from the PSU should be adjusted accordingly. Voltage adjustment is via a screw potentiometer accessed through the front
cover (remove small plastic plug first). The PSU is external to the Xvent and can be mounted some way from the product, possibly
resulting in a slight volt drop. This is a common reason for a slightly lower voltage at the battery terminals and requires adjusting.
27.2V DC must be the reading at the Xvent to ensure the batteries are given sufficient charge. Ensure that the batteries are connected.
After confirming that the PSU is correct the fire alarm connection should be tested. Ensure that the Xvent has been connected to the
fire switch (panel, break glass etc.) which will provide a normally closed safety circuit.