Seifert 3152303 User manual

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Table of Content 3152303
1. User manual 2 ..................................................................................................................................
2. Legal regulations 3 .........................................................................................................................
3. Safety instructions 4 ......................................................................................................................
4. Settings 5 .........................................................................................................................................
5. Functional principle 5 .....................................................................................................................
6. Technical data 6 ..............................................................................................................................
7. Performance graph 7 ......................................................................................................................
8. Mounting 8 .......................................................................................................................................
9. Condensate management 9 ...........................................................................................................
10. Mounting Principle 9 ....................................................................................................................
11. Cut Out Dimension 10 ...................................................................................................................
12. Dimension (H x W x D) 11 ............................................................................................................
13. Electrical Connection 12 ...............................................................................................................
14. Wiring Diagram 13 ........................................................................................................................
15. Taking into Operation 14 .............................................................................................................
16. Trouble Shooting 14 .....................................................................................................................
17. Maintenance & Cleaning 14 .........................................................................................................
18. Maintenance 14 .............................................................................................................................
19. Transport & Storage 15 ................................................................................................................
20. Parts supplied / Spare parts / Accessories 16 ..........................................................................

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1. User manual
This instruction manual contains information and instructions to enable the user to work safely, correctly and
economically on the unit. Understanding and adhering to the manual can help one:
Avoid any dangers.
Reduce repair costs and stoppages.
Extend and improve the reliability and working life of the unit.
PLEASE ENSURE TO USE THE RIGHT VERSION OF THE INSTRUCTION MANUAL SUITABLE FOR YOUR
UNIT.
Intended use
󰾬The unit is to be used exclusively for the dissipation of heat from control cabinets and enclosures (stationary,
not moving) in order to protect temperature sensitive components in an industrial environment. To meet the
conditions of use, all the information and instructions in the instruction manual must be adhered to.
General danger
Indicates compulsory safety regulations which are not covered by a specific
pictogram such as one of the following.
High electric voltage
Indicates electric shock danger.
Important safety instruction
Indicates instructions for safe maintenance and operation of the unit.
Attention
Indicates possible burns from hot components.
Attention
Indicates possible damage to the unit.
Instruction
Indicates possible danger to the environment.

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2. Legal regulations
Liability
The information, data and instructions contained in this instruction manual are current at the time of going to
press. We reserve the right to make technical changes to the unit in the course of its development. Therefore,
no claims can be accepted for previously delivered units based on the information, diagrams or descriptions
contained in this manual. No liability can be accepted for damage and production caused by:
Disregarding the instruction manual
Operating error
Inappropriate work on or with the unit
The use of non-specified spare parts and accessories
Unauthorised modifications or changes to the unit by the user or his personnel
The supplier is only liable for errors and omissions as outlined in the guarantee conditions contained in the main
contractual agreement. Claims for damages on any grounds are excluded.

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3. Safety instructions
Upon delivery the unit is already meeting current technical standards and can therefore be safely taken into
operation. Only authorised personnel is allowed to work on the unit. Unauthorised personnel must be prohibited
from working on the unit. Operating personnel must inform their superiors immediately of any malfunction of
the unit.
Please note that before starting to work on or with the unit, a procedure must be carried out inside the cabinet
on which the unit is to be mounted.
Before commencing work inside the cabinet, the control cabinet manufacturer's instruction must be read with
regards to:
Safety instructions.
Instructions on taking the cabinet out of operation.
Instructions on the prevention of unauthorised cabinet reconnection.
The electric equipment meets the valid safety regulations. One can find dangerous voltages (above 50 V AC or
above 100 V DC)
Behind the control cabinet doors.
On the power supply in the unit housing.
The unit has to be operated according to the type plate and the wiring diagram, and must be protected
externally from overloading and electrical faults via suitable protective devices.
Danger through incorrect work on the unit
The unit can only be installed and maintained by technical competent and qualified
personnel, using only supplied material according to the supplied instructions.
󰾬
Danger from electrical voltage
Only specialised personnel are allowed to maintain and clean the unit. The personnel must
ensure that for the duration of the maintenance and cleaning, the unit is disconnected from
the electrical supply.
Attention
Damage to the unit through the use of inappropriate cleaning materials. Please do not use
aggressive cleaning material.
Instruction
Damage to the environment through unauthorised disposal. All spare parts and associated
material must be disposed according to the environmental laws.

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4. Settings
Peltier cooling units are intended to be used as a complementary accessory to larger industrial equipment. They
are used where heat needs to be dissipated from electrical control cabinets or similar enclosures in order to
protect heat sensitive components.
Peltier cooling units can dissipate heat from sealed enclosures such as control cabinets. At the same time they
can reduce the cabinet internal temperature to below the ambient air temperature. They are available in
powder-coated sheet steel or stainless steel housings. Peltier units have additional heating function by changing
the supply polarity of the thermoelectric elements. This is possible by using a combination of thermostats or
having a specific polarity controller.
Peltier air conditioners are resistant to extreme ambient conditions and can operate effectively even in
environments which are dusty and oily and where temperatures may vary from -20°C to +65°C. For the cooling
capacities and environmental ratings please refer to the type plate data.
5. Functional principle
The thermoelectric elements create a temperature difference between the internal and ambient heat sinks,
making internal air cooler while dissipating heat into the external environment. Fans help the transfer of
convective heat from the heat sinks, which are optimized for maximum flow. Peltier units be mounted in any
position because these units don’t have a compressor and no moving parts.
1. Ambient fans
2. Ambient heat sinks
3. Thermolelectric elements
4. Insulation
5. Internal heat sink
6. Internal fan

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6. Technical data
Order Number 3152303
Cooling capacity L35L35 150 W
Operating Temperature Range -20°C - 70°C
UL temperature range -20°C - 65°C
Air flow volume (system / unimpeded) Ambient air circuit: 120 / 260 m³/h
Cabinet air circuit: 60 / 170 m³/h
Mounting Recessed
Housing Material Stainless steel AISI 304 (V2A)
Dimensions A x B x C (D+E) 400 x 180 x 170 (76+94) mm
Weight 9 kg
Cut out dimensions 370 x 155 mm
Voltage / Frequency 24 V DC
Current L35L35 6.3 A
Starting current 11 A
Max. current 7.9 A
Nominal power L35L35 170 W
Max. power 188 W
Fuse 10 A (T)
Connection Connection terminal block
Ingress Protection IP 66 / UL Type 12, 4, 4X
Approvals CE, cURus

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7. Performance graph

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8. Mounting
Always switch off power supply before starting any work on the unit.
Installation
Ensure that flows of air leaving and entering the cooling unit, internal and external, are not obstructed. Before
drilling the enclosure, ensure the fixing elements and couplings will not interfere with the equipment inside the
enclosure itself. When all mounting preparations are complete the actual mounting operation can
commence. Only use the enclosed material to mount the unit on the cabinet.
Proceed as follows to mount the unit on the cabinet:
• Set the unit up on the cabinet.
• Ensure that the electrical connection is above the internal fan.
• Unit without duct: screw the M5 or M6 locknuts & washers into the M5 or M6 set screws in the unit.
• Unit with duct: screw the M5 or M6 screws & washers into the M5 or M6 threaded rivets in the unit.
The resistance of the earth connection between the enclosure and cooling unit must be <0.1Ω.

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9. Condensate management
Depending on the mounting situation the condensation management may need to be considered and possibly
adjusted.
10. Mounting Principle
In order to maintain the stated protection ratings, the tightening torque for this unit should be 4.5 Nm and
needs to follow the below sequence.

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11. Cut Out Dimension

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12. Dimension (H x W x D)

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13. Electrical Connection
High electric voltage present. Installation, maintenance, cleaning and
any other work must be carried out by qualified personnel only. The
personnel must ensure that for the duration of this work the unit and
the cabinet are disconnected from the electrical supply and protected
against unauthorised/accidental reconnection.
Instruction: Check that the available voltage, frequency and fuse rating are the same as those stated on the
unit data label.
Connection to the main electricity supply
The mains connection is made via a cable. To connect the unit to the mains supply proceed as follows:
Disconnect the control cabinet from the mains.
󰾬See the connection details on the circuit diagram.
Note the connections on the four pole terminal block from the following table.
Terminal 24 V DC
1 Ambient Fan +
2 Ambient Fan -
3 Internal Fan +
4 Internal Fan -
5 Thermoelectric Elements +
6 Thermoelectric Elements -
Connect the unit to the mains.
Take the control cabinet back into operation in the prescribed manner.
Power consumption and start-up current are stated on the data label and under technical data.

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14. Wiring Diagram
TE Thermoelectric Elements
IF Internal Fan
AF Ambient Fan
Internal fan must operate continuously. Ambient fan and thermoelectric elements must be controlled
simultaneously by a thermostat (or similar temperature controller).

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15. Taking into Operation
The power supply rating on the rating plate must comply with mains supply
Always disconnect the power supply before opening the unit.
Heat load to be dissipated from enclosure should not exceed specific cooling output of the unit at any condition.
While selecting a cooling unit always cater for a safety margin of at least 15% extra cooling output.
The Peltier - elements should be controlled by a suitable thermostat. Models TG 6XXX with 100 - 230 V supply
have already a controller integrated.
16. Trouble Shooting
In case of a fault please contact your nearest servicing office. A list of service partners can be found on our
website www.seifertsystems.com
17. Maintenance & Cleaning
Always switch off power supply before starting any work on the unit. Only
qualified personal may conduct any maintenance work on the cooling unit.
All Peltier units are virtually maintenance-free and no filters which need to be cleaned or replaced. Check the
ambient heat sinks from time to time. In case they are dirty proceed as following:
Disconnect the enclosure from the mains.
Clean the heat sink profile as required by blowing it out with compressed air.
In cases of extreme pollution wet cleaning is required.
The unit must be removed from the control cabinet for wet cleaning
Should a wet cleaning be necessary proceed as following:
Disconnect the whole plant from the mains.
Remove the unit from the cabinet.
Ensure that the seals are not damaged.
Wash the heat sink with an environmentally safe cleaning fluid.
Danger to the environment through unauthorized disposal.
Disposal
Dispose of cooling unit and used parts with due regard for the environment and in accordance
with environmental laws and regulations.
18. Maintenance
Note: Only use original replacement parts when repairing the unit. This ensures that the unit functions perfectly
and remains safe.

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Fan replacement: The average working life of the fan is ca. 40,000 hours under normal conditions.
Should a fan replacement be necessary proceed as following:
Disconnect the unit from the mains.
Remove the unit cover.
Remove the screws from the relevant fan.
Mount a new fan.
Damage to the unit through incorrect work.
Make sure that the cabinet fan or the ambient fan are not misplaced in the unit as they are
different. Ensure that the correct polarity is maintained.
Replace the 4 fan fixing screws.
Close the unit and take it back into operation.
19. Transport & Storage
During transport and storage, the cooling unit must be kept in the position marked on the box and at a
temperature between -40˚C and 70˚C and a relative humidity of max. 95% (at 25°C). In case of damaged
packaging after transport or in-house handling, we recommend controlling the unit for any internal damages.

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20. Parts supplied / Spare parts / Accessories
Description QTY Image
Instruction manual 1
CE Declaration 1
M6*16 screw 8
M6 nuts 8
Nylon washer 8
Plastic blanking plug 2
Acessories:
Description Order no.
Condensate Kit 3152/3200 1002303
Door switch contact 3100001
Bimetallic temperature controller 7800000
Electronic thermostat 24 V DC 301510
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