Seifert 42680001 Bedienungsanleitung

Version No. 1-6 - 20.05.2021 Doc. No. 9942680001 1 / 18

Table of Content 42680001

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. Controller Layout Description 12 ................................................................................................

12. Wiring Diagram 13 ........................................................................................................................

13. Taking into Operation 14 .............................................................................................................

14. Trouble Shooting 15 .....................................................................................................................

15. Maintenance & Cleaning 16 .........................................................................................................

16. Maintenance 16 .............................................................................................................................

17. Transport & Storage 17 ................................................................................................................

18. Parts supplied / Spare parts / Accessories 18 ..........................................................................

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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 42680001

Cooling Capacity L35L35 400 W @ 50 Hz

425 W @ 60 Hz

Cooling Capacity L35L50 155 W @ 50 Hz

165 W @ 60 Hz

Compressor Rotary piston compressor

Refrigerant / GWP R134a / 1430

Refrigerant Charge 92 g / 3.2 oz

High / Low Pressure 20 / 13 bar

290 / 188 psig

Operating Temperature Range +10°C - +50°C

Air Flow Volume (System / Unimpeded) Ambient air circuit: 200 / 450 m³/h

Cabinet air circuit: 125 / 250 m³/h

Mounting Wall mounted / Recessed

Housing Material Mild steel, powder coated

Dimension A x B x C (D+E) 520 x 320 x 110 (25+85) mm

Weight 14.8 kg

Voltage / Frequency 230 V ~ 50/60 Hz

Current L35L35 1.6 A @ 50 Hz

1.5 A @ 60 Hz

Starting Current 3.2 A

Max. Current 1.9 A

Nominal Power L35L35 325 W @ 50 Hz

345 W @ 60 Hz

Max. Power 440 W

Fuse 6 A (T)

Short-Circuit Current Rating 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 it󰾬4.

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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 suppy

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 AC/DC, 5 A. 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

A fault warning contact for temperature in excess of the pre-set cabinet temperature is available and can be

connected as required. The operating current for this function must be less than 4A/30VDC, 4A/250VAC. The

fault warning is connected via terminals P1, P2 & P3 on the connection terminal block. The alarm 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 requirements 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.

To connect the door contact switch:

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