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Chapter 8 • Mounting and connection of pneumatic components
8
Mounting and connection of pneumatic components
This chapter describes the mounting of the Purging unit, the connection to the sampling pipe sys-
tem as well as the aspirating smoke detector and the compressed-air connection.
Pay attention to the danger notices given on page 3.
Beware of static charges! The electronic components used in the Automatic Purging Unit
F-BO-AFE70-2 can be destroyed by static charges when the device is open. Before and during
the work being performed on printed circuit boards, static charges from your body must be reli-
ably discharged by touching an earthed piece of metal.
8.1
Location of installation
The Purging unit must be installed in a clean room on a stable wall surface. The room temperature
must range between +5°C and +50°C in the immediate vicinity of the Automatic Purging Unit
F-BO-AFE70-2, and between -20°C and +40°C in the immediate vicinity of the F-BO-AFE70-3;
the relative humidity of the air must not exceed 95% at 40°C.
Within certain limits, the temperature range can be extended; please ask your supplier or the manu-
facturer about it.
Bear in mind that the life span of the components may be reduced by high temperature and
humidity. Therefore, it is recommended to install the Purging unit in an environment with a nor-
mal indoor climate (i.e., up to a maximum of +40°C), if it is possible.
The pipe connection between the Automatic Purging Unit F-BO-AFE70 and the evaluation unit of
the aspirating smoke detector should be as short as possible. Please note that this connecting piece
is not cleaned during the „Purging process"!
8.1.1
Permissible mounting positions
Fig. 6:
Schematic illustration of the permissible wall mounting positions of the Automatic Purging
Unit F-BO-AFE70 together with the evaluation unit and the pipe system of the aspirating smoke
detector.
A ... Mounting position with downward air flow in the direction of aspiration (compressed-air
B ... Mounting position with upward air flow in the direction of aspiration (compressed-air con-
C ... Mounting position with air flow from the left to the right in the direction of aspiration (com-
connection at the bottom)
nection at the top)
pressed air connection at the bottom right)
However, the mounting position with air flow from the right to the left in the direction of
aspiration (compressed-air connection at the top left) is not permissible!
User Manual Series F-BO-AFE70
I56-4252-010
D200-104-00
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