Scope Of Delivery And Options; Scope Of Delivery; Accessories; General Information - Pfannenberg DTT 601 Serie Instrucciones De La Instalación Y Del Uso

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Scope of delivery and options

3.1

Scope of delivery

The Scope of delivery includes:
• Cooling unit,
• Operating manual,
• Supplement sheet,
• Enclosed package, (gasket, fastening material, electrical plug-
type connectors)
• special accessories, if applicable.
3.2

Accessories

The following parts may be ordered separately:
• Textile filter;
• Metal filter;
• Quick-release frame
• further options on request or in accordance with the catalogue.
4

General Information

• Old devices can be properly disposed of by Pfannenberg. They
must be sent to one of our works shipment/postage paid.
• All cooling units produced by Pfannenberg are free from
– siliconecompounds,
– PCB,
– PCT,
– asbestos,
– formaldehyde,
– cadmium,
– substances impairing wetting.
• all cooling units are ROHS compliant.
• Every cooling unit is checked to ensure that it is tight according
to the provisions of UVV-BGV D4 (German regulations covering
accident prevention).
• Prior to delivery the electrical safety of every cooling unit is
factory tested. This means that, in accordance with UVV-BGV
A2, §5 (4), the operating company is released from the obligati-
on to arrange for a test of the electrical part of the cooling unit
before initial start of operation.
5

ID Plate and Technical Data

For installation and maintenance, note the data on the ID plate; it is
to be found on the back of the cooling unit casing.
The technical details applicable to the cooling unit are in the
accompanying supplement sheet or on our homepage
(www.pfannenberg.com).
unit type nominal voltage
refrigerant
exterior/interior fusing
conditions
type of fusing
085 408 097a
serial number
pressure of
frequency
refrigerant
nominal current starting
current
electrical cooling
energy capacity
6

Safety

Cooling units produced by Pfannenberg are designed for dissipating
heat from switch cabinets (IP 54). During each cooling process
condensate can be produced. The cooling unit is only suitable for
stationary operation.
The cooling unit may only be used under the ambient conditions
specified on the accompanying supplement sheet.
The cooling unit is to a large measure maintenance-free (see Section
11).
Every other use is considered as non-authorized use making any
warranty null and void.
The electrical equipment must be regularly checked. Any faults such
as loose connections or scorched cables must be removed
immediately.
Work on the cooling system and on electrical components may only
be carried out by authorized specialist personnel.
Compliance with applicable safety and environmental regulations
is mandatory.
Hazard!
Isolate the cooling unit from the mains before carrying out
any cleaning or maintenance operations.
Only original spare parts may be used. Please find spare parts in
the accompanying supplement sheet or at www.pfannenberg-
spareparts.de.
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Function

7.1

Principles of function

1 Compressor
2 Heat exchanger
(condenser)
3 Expansion valve
4 Heat exchanger
(evaporator)
5 fan, exterior circulation
6 fan, inner circulation
7 Electronic control system with temperature sensor
The compressor (1) compresses the refrigerant until high pressure
is achieved. During this process temperature increases. In the
condenser (2) heat is dissipated to ambient air, the coolant becoming
liquid. The condenser fan (5) of the condensator takes ambient air
in through the condenser, then it releases the air.
In the expansion valve (3) the pressure of the coolant drops. In the
evaporator (4) the coolant absorbs heat from the air in the switch
cabinet and evaporates. Thus, the air in the switch cabinet cools
down. At the same time the air inside the switch cabinet is being
dehumidified. The evaporator fan (6) sucks the air out of the switch
cabinet via the evaporator, the cooled air flows back to the switch
cabinet.
The cooling unit is electronically controlled. For that purpose a
temperature sensor records the temperature of the air inside the
switch cabinet (7).
The refrigerant is not detrimental to the ozonosphere; it is hardly
combustible.
7.2

Condensate

During cooling on the evaporator the moisture removed from the air
is collected as condensate. In order to avoid any damage to the
switch cabinet and the cooling unit, the condensate must be
discharged.
The condensate is evaporated into the surroundings with an
integrated evaporator. For safety reasons, there is a drain nozzle
on the evaporation unit on which the drain hose is attached.
In order to selectively collect any condensate arising, a condensate
collection bottle is available as an accessory (art. no.
18314000100).
Excessive condensation can occur if, for example, the switch
cabinet is not sealed.
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