Pfannenberg DTI Serie Instrucciones De La Instalación página 12

CAUTION:
If there is excessive condensate during normal operation
check the sealings of the switch cabinet.
We recommend that you install a door contact switch to
switch off the cooling unit, when the door of the switch cabinet
is opened, in order to prevent excessive condensate.
8 Installation
8.1 General
•
The installation place for the switch cabinet must be selected
such that proper ventilation of the cooling unit is ensured.
•
The single units or the units and the wall must be at a distance
of 200 mm at least.
•
Air circulation in the switch cabinet must not be impeded by
built-in parts.
•
The assembly of the cooling unit can be carried out with and
without a cover (external). (The unit must be disconnected
from the power supply!)
•
The site of installation must be protected against contamination.
CAUTION
If the cooling unit is mounted on an switch cabinet door, it
must be confirmed that the hinges can support the additio-
nal weight or that the switch cabinet will not topple over
when the door is opened
CAUTION: Chips may damage the switch cabinet.
If the required cutouts are only made in the switch cabinet
just before mounting of the cooling unit, make sure that
swarf is not allowed to enter the device hood by using a
cover sheet, for example.
Hint
To facilitate installation with heavy units, M8 lifting eyes can be
screwed into the upper fixing on the equipment housing. Simple
„one man installation" is thereby possible.
8.2 Installation of side-mounted, bolt-on cooling unit
DTS
The mounting surface of the switch cabinet is to be provided with
cutout(s) and holes for air ventilation openings and for securing the
unit according to the accompanying sheet.
The drawing on the accompanying sheet also shows the location of
the electrical connections and ventilation openings.
1) Make cutout(s) and drillings for the cooling unit, if not already
provided in the switch cabinet (see drawing on accompanying
sheet).
Remove burrs from the cut edges
2) Position the profile seal around the rim of the cutou(s)t. Positi-
on the seal so that the impact ends are facing downwards.
3) Screw the two threaded studs included in the component pack
into the upper fixing point of the cooling unit. Suspend the unit
from outside onto the switch cabinet using the threaded studs.
4) Use the screws, nuts and washers included in the component
pack to secure the cooling unit on the inner side of the switch
cabinet. Tighten up fixings so that the seal is compressed to a
thickness of 2 mm.
12
5) Feed the condensate run-off tube through the opening in the
base of the unit. Lay the tube with a downward fall. Shorten as
required.
6) If the cooling unit is mounted without the device hood, plug the
earth cable and the connecting cable to the display unit on the
hood and mount this on the cooling unit.
7) Clamp the cable as shown in the connection diagram (see back
of unit) to the plug (component pack) and connect to the unit.
- conducter size: 0,5 – 2,5mm² or AWG20 - AWG14 (In the
selection of cable size, the relevant regulations must be
observed!)
8) Connect the unit to the electrical supply (see Section 8.4).
8.3 Installation of built-in cooling unit DTI
The mounting surface of the switch cabinet is to be provided with
a rectangular cutout as shown on the accompanying sheet.
The drawing on the accompanying sheet shows the location of
the ventilation openings after mounting the unit as seen from the
inside of the switch cabinet.
1) Make cutout for the cooling unit, if not already provided in the
switch cabinet (see drawing on accompanying sheet).
Remove burrs from the cut edges
2) From the outside, insert the cooling unit (Pos. 1) into the cutout
and push through until the unit seal engages with the switch
cabinet (Pos. 2). Close the snap-fasteners (Pos.4) with an
audible click from the unit or upper side and secure the unit
against falling out.
1 Cooling Unit DTI
2 Switch cabinet wall or door
3 Securing spring
4 Snap fastener
3) On the inside of the switch cabinet, make sure that the securing
springs (Pos. 3) supplied in the component pack rest in their
locations. To do this, compress the springs by hand so that the
securing bracket can be secured in the housing cutout.
In switch cabinets with reinforcing frames, insert the securing
springs in the rear of the housing cutouts.
4) Feed the condensate run-off tube through the opening in the
base of the unit. Lay the tube with a downward fall. Shorten as
required.
5) If the cooling unit is mounted without the device hood, plug
the earth cable and the connecting cable to the display unit on
the hood and mount this on the cooling unit.
6) Clamp cables in accordance with the connection diagram
(see rear of unit) to the plug-in connectors (enclosed
package) and connect to the unit.
GB
085408064e