Seifert 852520012-BZBG Bedienungsanleitung

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Table of Content 852520012-BZBG

1. User manual 2 ..................................................................................................................................

2. Legal regulations 3 .........................................................................................................................

3. Safety instructions 4 ......................................................................................................................

4. Settings 5 .........................................................................................................................................

5. Functional principle 6 .....................................................................................................................

6. Technical data 7 ..............................................................................................................................

7. Performance graph 8 ......................................................................................................................

8. Mounting 9 .......................................................................................................................................

9. Mounting Principle 13 .....................................................................................................................

10. Cut Out Dimension 14 ...................................................................................................................

11. Electrical Connection 15 ...............................................................................................................

12. Controller 17 ..................................................................................................................................

13. Wiring Diagram 21 ........................................................................................................................

14. Taking into Operation 22 .............................................................................................................

15. Trouble Shooting 23 .....................................................................................................................

16. Maintenance & Cleaning 23 .........................................................................................................

17. Transport & Storage 25 ................................................................................................................

18. Parts supplied / Spare parts / Accessories 26 ..........................................................................

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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

The cooling unit is intended to be used as a complementary accessory to larger industrial equipment. The unit

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.

Enclosure cooling units can dissipate large quantities of heat from sealed enclosures such as electrical

enclosures into the ambient air and at the same time reduce the cabinet internal temperature to below that of

the ambient air.

The unit can function without problems in extreme ambient conditions (e.g. dusty and oily air) with a standard

operating temperature ranging between +10°C (50°F) and +60°C (131°F). Units can be ordered with an

additional electrical cabinet heater. For the cooling capacities and evironmental ratings please refer to the type

plate data.

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5. Functional principle

The cooling unit for industrial enclosures works on the basis of a refrigeration circuit consisting of four main

components; a compressor, an evaporator, a condenser and an 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 Air intake 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 852520012-BZBG

Cooling capacity L35L35 2.5 kW @ 50 Hz

2.5 kW @ 60 Hz

Cooling capacity L35L50 2.1 kW @ 50 Hz

2.1 kW @ 60 Hz

EER L35L35 2.06

Compressor type Rotary piston

Refrigerant / GWP R134a / 1430

Refrigerant charge 340 g / 12 oz

High / low Pressure 30 / 6 bar

435 / 88 psi

Operating Temperature Range 10°C - 60°C

UL temperature range 10°C - 60°C

Air ﬂow volume (system / unimpeded) Ambient air circuit: 680 / 1200 m³/h

Cabinet air circuit: 500 / 850 m³/h

Mounting Wall mounted / recessed

Housing Material Mild steel, powder coated

Dimensions A x B x C (D+E) 1,350 x 395 x 210 (55+155) mm

Weight 45 kg

Voltage / Frequency 380-415 V 50 Hz 3~

400-460 V 60 Hz 3~

UL Voltage / Frequency 460 V / 60Hz 3~

Current L35L35 2.7 A @ 50 Hz

2.7 A @ 60 Hz

Starting current 20 A

Max. current 3.1 A

Nominal power L35L35 1.2 kW @ 50 Hz

1.47 kW @ 60 Hz

Max. power 1.95 kW

Fuse 15 A (T)

Max circuit ampacity 15 A

Short-circuit current rating 5 kA

Rated current compressor 2.2 A

Full load current fans 1.3 A

Connection 4 pole terminal for power

5 pole terminal for signals

Ingress Protection IP 55 / NEMA 12

Approvals CE, cURus, cULus

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7. Performance graph

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8. Mounting

Unpacking unit:

Please follow the below steps to unpack the unit.

STEP 1:

Stand the cooling unit upright with the pre-cut packaging opening facing up.

STEP 2:

Pull oﬀ the packaging opening.

STEP 3:

Hang the transport loop of the unit in the transport hook and lift it slightly.

STEP 4:

Pull oﬀ the packaging and slide out the tray with installation material and the short version of the operating

manual.

STEP 5:

Pull oﬀ the remaining packaging.

STEP 6:

The cooling unit can now be attached to the enclosure.

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Mounting:

The power supply rating on unit rating plate must comply with mains rating.

Always disconnect the power supply before opening the unit.

The heat load to be dissipated from enclosure should not exceed speciﬁc cooling output of the unit at any

condition. At cooling unit selection always cater for a safety margin of at least 15% extra cooling output in the

worst conditions.

Air inlets and outlets must be completely free from obstruction. Ensure that ﬂows of air leaving and entering the

cooling unit, internal and external, are not obstructed. 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.

Cooling unit enclosure air suction hole must be installed in the highest possible point.

When installing the unit on a door ensure it can take the weight. Before drilling the enclosure ensure the ﬁxing

elements and couplings will not interfere with the equipment inside the enclosure itself. Disconnect power

before starting any work inside the enclosure.

If the unit is mounted in a recessed position, the controller bracket can be pulled according to the wall thickness

of the enclosure outwards as per steps below.

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