Seifert 42702001 User manual
Version No. 1-2 - 01.05.2021 Doc. No. 9942702001 1 / 17
Table of Content 42702001
1. User manual 2 ..................................................................................................................................
2. Legal Regulations 2 ........................................................................................................................
3. Safety Instructions 3 ......................................................................................................................
4. Settings 4 .........................................................................................................................................
5. Functional Principle 4 .....................................................................................................................
6. Technical Data 5 ..............................................................................................................................
7. Mounting 6 .......................................................................................................................................
8. Condensate management 8 ...........................................................................................................
9. Mounting Principle 9 .......................................................................................................................
10. Electrical Connection 10 ...............................................................................................................
11. Wiring Diagram 12 ........................................................................................................................
12. Taking into Operation 13 .............................................................................................................
13. Trouble Shooting 14 .....................................................................................................................
14. Maintenance & Cleaning 15 .........................................................................................................
15. Maintenance 15 .............................................................................................................................
16. Transport & Storage 16 ................................................................................................................
17. Parts supplied / Spare parts / Accessories 17 ..........................................................................
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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.
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:
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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.
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
The cooling unit is intended to be used as a complementary accessory to larger industrial equipment,
and is used where heat needs to be dissipated from electrical control cabinets or similar enclosures in order to
protect heat sensitive components. It is not intended for household use. The unit has two completely separate
air circuits which ensure that the clean cabinet air does not come into contact with the ambient air which may
well be dirty or polluted. The cooling unit can dissipate large quantities of heat from electrical enclosures into
the ambient air and at the same time reduce the internal temperature to below that of the ambient air. The unit
works without problems in extreme ambient conditions (e.g. dusty and oily air). The operating temperature
range is between +20°C and +55°C. Units can be ordered with an additional electrical cabinet heater. For
the cooling capacities and evironmental ratings please refer to the type plate data.
5. Functional Principle
The cooling unit for enclosures works on the basis of a refrigeration circuit consisting of four main
components: compressor, evaporator, condenser and expansion device.
The circuit is hermetically sealed and R134a refrigerant circulates inside it (R134a is chlorine free and has an
Ozone Destruction Potential [ODP] of 0 and a Global Warming Potential [GWP] of 1430). The compressor
compresses the refrigerant (thus taking it to high pressure and high temperature), and pushes it through the
condenser, where it is cooled by ambient air thus passing from the gas to the liquid state. At the liquid state it
then passes through the capillary pipe being a much lower pressure the refrigerant arrives to the evaporator
where it absorbs the necessary heat to change from liquid to gas state. The gas is then drawn back into the
compressor completing the cycle.
1 Air intake cabinet side 6 Air intake ambient side
2 Radial fan cabinet side 7 Radial fan ambient side
3 Evaporator 8 Condenser
4 Air outlet cabinet side 9 Air outlet ambient side
5 Compressor 10 Filter dryer
11 Expansion device
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6. Technical Data
Order Number 42702001
Cooling Capacity L35L35 600 W @ 50 Hz
600 W @ 60 Hz
Cooling Capacity L35L50 300 W
Compressor Rotary piston compressor
Refrigerant / GWP R134a / 1430
Refrigerant Charge 265 g / 9.3 oz
High / Low Pressure 30 / 9.1 bar
435 / 132 psig
Operating Temperature Range +10°C - +50°C
Air Flow Volume (System / Unimpeded) Ambient air circuit: 340 / 650 m³/h
Cabinet air circuit: 170 / 550 m³/h
Mounting Wall mounted / Recessed
Housing Material Mild steel, powder coated
Dimension A x B x C (D+E) 810 x 395 x 145 (25+120) mm
Weight 33 kg
Cut Out Dimension 791 x 376 mm
Voltage / Frequency 400 / 460 V - 50/60 Hz 2~
Current L35L35 1.5 A
Starting Current 4 A
Max. Current 2.1 A
Nominal Power L35L35 550 W @ 50 Hz
570 W @ 60 Hz
Max. Power 700 W
Fuse 2 x 3 A (T)
SCCR 5 kA
Connection Connection terminal block
Ingress Protection IP 54
Approvals CE, cURus, cULus
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7. Mounting
Mounting preparations
Several points must be checked before the unit can be mounted. These checks must be made to ensure safety
and the trouble-free operation of the unit. These checks must be carried out with absolute thoroughness to
ensure that the unit works perfectly.
Check unit for transport damages
On delivery the carton box containing the unit must be examined for signs of transport damage. Any transport
damage to the carton box could indicate that the unit itself has been damaged in transit which in the worst case
could mean that the unit will not function.
Location and space requirements
The location of the cabinet must allow for sufficient air circulation to and from the unit.
Attention
Damage to the unit through incorrect mounting. The unit must be mounted according to the mounting template.
It is therefore also important to check, with the help of a spirit-level, that the cabinet is in a horizontal position.
The max. deviation from the vertical or horizontal is 3 degrees.
Air apertures
To provide adequate air circulation and avoid temperature layers from forming, ensure that air inlet and air
outlet are not partially or completely blocked by obstructions in the cabinet. It must also be ensured in
accordance with UL, that the air outlet is not blowing air directly at an equipment operator. Should this be the
case a barrier or duct shall be provided to redirect the airflow.
Sealing
To guarantee that the unit works perfectly ensure that:
the control cabinet is completely sealed to min. IP54 according to EN 60529
a good seal exists between the control cabinet and the unit
Danger through high voltage
Ensure that for the duration of the mounting operation the cabinet is disconnected from the electrical supply.
Therefore take the cabinet out of operation, following the relevant instructions, before mounting work begins
and take all precautions to prevent premature reconnection of the cabinet. When all mounting preparations are
complete the actual mounting operation can commence.
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Use of mounting template (not applicable for 19" rack mount units)
The supplied mounting template helps to mount the cabinet air conditioner quickly. Please proceed as follows:
Take the cabinet out of operation in the prescribed manner and secure it against unauthorized
reactivation
Fix the mounting template in the required position on the outer surface of the cabinet
Drill the holes and cut the apertures in the required positions in the surface of the cabinet and remove
the mounting template
Stick the self-adhesive unit seals on the outer surface of the cabinet for externally mounting and on the
inner surface of the cabinet for half in/half out mounting of the unit
The self-adhesive seals ensure a durable seal between the unit and the cabinet.
Mounting the unit
Only use the supplied material to mount the unit on the cabinet. Proceed as follows to secure the unit on the
cabinet:
Set the unit up on the cabinet
Screw the M6 hex. head screws together with the washers and locking washers into the M6 threaded
rivets in the uni
The resistance of the earth connection between cabinet and cooling unit must be < 0.1 Ω.
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8. Condensate management
Condensation drain (1) and oel & cleaning drain (2) pipe connection
The condensation drain (1) is in the base of the unit. The condensation drain pipe should be attached as
required e.g. in conditions of high humidity.
To install an oel & cleaning drain (2) pipe, please follow below steps:
Remove the plastic stopper from in the base of the unit (factory setting is locked)1.
Dispose the plastic stopper but keep the Slilicon washer 2.
Insert the drain connector 3.
Lock it clockwise and fix the oel & cleaning pipe onto it4.
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9. Mounting Principle
Do not use within the first 15 minutes after installation!
1 Mounting gasket
2 Mounting clip
3 M6 slotted set screw
4 Washer
5 Lock nut
Fig. 1 Recessed
Fig. 2 External
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10. 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.
Note: As soon as preperations are finished, mounting procedures may proceed.
Connection to the main electrical supply
The mains connection is made via a connector / terminal block. To connect the unit to the mains proceed as
follows:
Take the control cabinet out of operation in the prescribed manner.
See the connection details on the circuit diagram.
Attention
Between contact T1 & T2 there is a 12V DC potential. These connections are to be connected to a door switch
only! If no door switch is used, these contacts are to be bridged and protected from unauthorized and/or
accidental external contact. Contacts P1, P2 & P3 are potential free and require an external power source if
wired to operate external components (indicator lamps, switches...). The load on these contacts is not to exceed
30V DC, 4 A or 120/250V AC, 4A. If wired to external components it must be ensured that the wiring and
connections are double insulated and safe against touch and protected from unauthorized and/or accidental
external contact.
Ensure that the correct polarity is maintained. The fans should have
clockwise rotation.
Fault warning connection
The fault warning is connected via terminals P1, P2 & P3 on the connection terminal block. The temp.
adjustment range is between 25°C (left-hand stop) and 55°C (right-hand stop). The alarm temp. is preset at
50°C.
To change the alarm setting:
Remove the outer cover.
Remove the fixing screws from the PCB cover and the earth wire from inside it.
Lift off the PCB cover
Using a screwdriver turn the alarm temp. potentiometer on the PC-board slightly to the right (higher) or
the left (lower)
please note that the setting for the alarm signal must be at least 5°C higher than the setting for the
cabinet's internal temperature
Close the unit as prescribed.
Check that the new setting meets requirments and if not repeat the above process.
Door contact switch connection
If required the unit can be switched on or off via a door contact switch (terminal T1&T2). When delivered the
door contact terminals are bridged.
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