Seifert 872520201USL Bedienungsanleitung

Version Nr. 1-14 - 14.03.2022 Doc. No. 99872520201USL 1 / 20

Table of Content 872520201USL

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

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

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

4. Settings 4 .........................................................................................................................................

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

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

7. Mounting 7 .......................................................................................................................................

8. Condensate management 8 ...........................................................................................................

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

10. Electrical connection 10 ...............................................................................................................

11. Controller 12 ..................................................................................................................................

12. Wiring diagram 16 .........................................................................................................................

13. Taking into operation 17 ..............................................................................................................

14. Trouble shooting 17 ......................................................................................................................

15. Maintenance & Cleaning 18 .........................................................................................................

16. Transport & Storage 19 ................................................................................................................

17. Parts supplied / Spare parts / Accessories 19 ..........................................................................

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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 in order to

protect temperature sensitive components in an industrial enviorment. 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. 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 -40°F and 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

WarmingThe 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 Warning 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 872520201USL

Cooling capacity 95F/95F 8530 BTU @ 60 Hz

Cooling capacity 95F/122F 7165 BTU @ 50 Hz

7505 BTU @ 60 Hz

EER 95F95F 6.8 / 5.7

Compressor type Reciprocating compressor

Refrigerant / GWP R134a / 1430

Refrigerant charge 360 g / 12.7 oz

High / low pressure 435 / 88 psi

Operating temperature range -40˚F - 140˚F

Air volume ﬂow (system / unimpeded) Ambient: 440 / 520 cfm

Enclosure: 360 / 520 cfm

Mounting Wall mounted

Housing Material Mild steel, powder coated

Dimension H x W x D 35 x 15.6 x 12 inch

Weight 104 lbs.

Voltage / Frequency 400/460 V - 50/60 Hz 2~

UL Voltage / Frequency 460 V / 60Hz 2~

Current 95F95F 3.1 A @ 50 Hz

3.3 A @ 60 Hz

Starting current 11.3 A

Max. current 5.4 A

Nominal power 95F95F 1.2 kW @ 50 Hz

1.5 kW @ 60 Hz

Max. power 2.05 kW

Fuse 15 A (T)

Max circuit ampacity 15 A

Short-circuit current rating 5 kA

Rated current compressor 2.9 A

Full load current fans 0.4 A

Connection 5 pole terminal block for signals, 4 pole terminal block for

power

Ingress protection IP 56 / Type 12, 3, 3R, 4

Approvals CE, UL(ACVS), cULus

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7. Mounting

Unpacking unit:

Please follow the below steps to unpack the unit.

STEP 1:

Stand the air conditioner 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. 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. Following this 1:1

Scale Drilling Template drill the holes and make the required cuts on the enclosure. This template may have

been aﬀected by storage conditions, please check this template by verifying values of the largest dimensions

before drilling. Fit the sealing strip on the cooling unit on the side connected to the enclosure and follow the

installation diagram.

This AC unit can only be mounted to a suitably Type rated enclosure to maintain it's Type rating. The Type and

IP rating of the enclosure should be the same or higher than that of the unit.

8. Condensate management

High humidity and low temperatures inside the enclosure can lead to condensation on the evaporator.

Condensate that ﬂows back into the enclosure can damage sensitive control electronics. The integrated

condensate evaporation of the cooling unit releases the condensate to the environment. If condensate

formation is too great, additional condensate can drip into an overﬂow trough, which then drains oﬀ on the

ambientt side.In order to prevent the formation of excessive condensate, you should nevertheless:

- check the seals at regular intervals

- consider installing a door contact switch (order no. 3100001). This can prevent condensation forming

when enclosure door is left open.

Condensation drain pipe connection:

The condensation drain is in the base of the unit. The condensation drain pipe should be attached as required

e.g. in conditions of high humidity.

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9. Mounting Principle

NOTES:

Do not use within the ﬁrst 15 minutes after installation!

Use only the supplied mounting hardware.

Tighten Screws to 4.5 Nm.

Ensure the mounting surface does not warp after assembly and reinforce it if necessary.

1 M6 bolts

2 M6 toothed washers

3 M6 Flat washers

4 Enclosure

5 Mounting gasket

6 Cooling unit

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10. Electrical connection

Door Switch

The unit can be switched ON and OFF via a door contact switch. When delivered the door contact terminals are

bridged on the female connector. To connect the door contact switch remove the bridge and connect door

contact switch. The contact must be closed when the cabinet door is closed.

It is possible to change the logic of the door switch (controller ﬁrmware rev. 1.2 or higher). This can be set by

changing the value of parameter c68. Refer to the table below and section Controller: Setting temperature units

(°C / °F), low temperature alarm, door contact logic section for more information.

c68 = 0 (default) ON if closed - Door contact terminals bridged, or NC door switch connected

(contact must be closed when cabinet door is closed)

c68 = 1 ON if open - Remove bridge, or NO door switch connected

(contact must be open when cabinet door is closed)

Alarm Contacts

Alarm contacts rated according to:

EN60730-1 8(4)A N.O., 6(4)A N.C., 2(2)A N.O./ N.C. @ 250Vac 100000 cycles

UL 873 8A resistive 2FLA 12LRA, pilot duty C300 @ 250Vac 30000 cycles

These contacts are not suitable for ﬂuorescent loads (neon lights, etc.) that use starters (ballasts) with phase

shifting capacitors. Fluorescent lamps with electronic controllers or without phase shifting capacitors can be

used, depending on the operating limits speciﬁed for each type of relay.

Connect unit:

Connect the cooling device according to the instructions below. The cable cross-section must correspond to the

required power for the current consumption, but max. 2.5 mm² / AWG 14.

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