6
Installation
Installation orientation
The installation orientation of the controller is critical
because of the diaphragm pressure transducer;
approved installation orientations are shown on a
sticker (Fig. 5) on the controller casing.
Fig. 5: Sticker showing the installation orientation
Installation orientation OK
Installation orientation not OK
Install the controller only as follows:
On horizontal ducts (left side of the sticker)
–
Only on the side of a duct
Do not install the controller above or
below a duct and neither anywhere in
between.
On vertical ducts (right side of the sticker)
–
Any installation orientation
Alternative installation orientation
The installation orientations shown on the sticker
apply to the controller at the time of shipping.
They depend on the position of the diaphragm
pressure transducer in the controller casing. If
you install the controller above or below a duct,
you have to adapt the position of the diaphragm
pressure transducer
Alternative installation position of the dia-
phragm pressure transducer
Fig. 6: Original position of the diaphragm pressure
transducer at the time of shipping
The diaphragm pressure transducer (Fig. 6/1) and
its holder (Fig. 6/2) are factory fitted in such a way
that the installation orientations of the controller cor-
respond to the sticker.
If necessary, you can adapt the controller for instal-
lation above or below a duct. To do so, you have to
turn the diaphragm pressure transducer by 90°.
1.
Grasp the diaphragm pressure transducer
together with the holder and carefully lift it
out of the casing. Be careful so as not to
kink the pneumatic measuring tubes or to
inadvertently disconnect any wires or
cables.
Installation
EASYLAB controller Serie TCU3
17
