Seifert KG 4555-120V User manual

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Table of Content KG 4555-120V
1. User manual 2 ...................................................................................................................
2. Legal regulations 2 ...........................................................................................................
3. Safety instructions 3 ........................................................................................................
4. Technical information 4 ...................................................................................................
5. Functional principle 4 ......................................................................................................
6. Technical data 5 ................................................................................................................
7. Performance Graph 6 .......................................................................................................
8. Mounting 7 .........................................................................................................................
9. Mounting Principle 8 ........................................................................................................
10. Cut out dimensions 9 .....................................................................................................
11. Dimensions (H x W x D) 10 ............................................................................................
12. Electrical connection 11 .................................................................................................
13. Controller Layout Description 13 .................................................................................
14. Wiring diagram 14 ..........................................................................................................
15. Taking into operation 15 ...............................................................................................
16. Repair 16 .........................................................................................................................
17. Maintenance & Cleaning 16 ..........................................................................................
18. Maintenance 17 ...............................................................................................................
19. Transport & Storage 18 .................................................................................................
20. Parts supplied 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.
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Reduce repair costs and stoppages.
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Extend and improve the reliability and working life of the unit.
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PLEASE ENSURE TO USE THE RIGHT VERSION OF THE INSTRUCTION MANUAL SUITABLE FOR
YOUR UNIT.
Conditions of 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 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
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Operating error
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Inappropriate work on or with the unit
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The use of non-specified spare parts and accessories
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Unauthorised modifications or changes to the unit by the user or his personnel
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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 therefore it can be safely taken
into operation. Only trained specialists are allowed to work on the unit. Unauthorised personnel must
be prohibited from working on the unit. Operating personnel must inform their superiors immediately if
any malfunction of the unit becomes apparent.
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.
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Instructions on taking the cabinet out of operation.
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Instructions on the prevention of unauthorised cabinet reconnection.
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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.
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On the power supply in the unit housing.
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The unit has to be fused according to the type plate and the wiring diagram, and must be protected
externally from overloading and electrical faults via suitable protective devices such as ground fault
protection breakers.
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. Technical information
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. 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 unit functions on the principle of the compression refrigerator. The main components are:
refrigerant compressor, condenser, choke and evaporator. these four components of the refrigerant
plant are connected with each other by pipes to form a hermetically sealed system in which the
refrigerant (R134a) circulates. R134a is chlorine free and has an Ozone Destruction Potential [ODP] of
0 and a Global Warning Potential [GWP] of 1430.
1. Air intake, cabinet side 7. Radial fan, ambient side
2. Radial fan, cabinet side 8. Condenser
3. Evaporator 9. Air outlet, ambient side
4. Air outlet, cabinet side 10. Filter dryer
5. Compressor 11. Expansion valve
6. Air intake, ambient side

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6. Technical data
Order Number 45551001
Cooling capacity L35L35 1.10 kW
Cooling capacity L35L50 700 W
Compressor Rotary piston compressor
Refrigerant / GWP R 134a / 1430
Refrigerant charge 500 g / 18 oz
High / low pressure 35 / 35 bar
508 / 508 psig
Temperature range +10°C - 55°C
Air volume flow Ambient air circuit: 360 m³/h
Cabinet air circuit: 720 m³/h
Mounting Roof mounted
Material housing Mild steel, powder coated
Dimension HxWxD 400 x 400 x 600 mm
Weight 55 kg
Cut out dimensions 108 x 530 mm (x2)
Voltage / Frequency 120 V ~ 60 Hz
Current L35L35 8 A @ 60 Hz
Starting current 37 A
Max. current 9.6 A
Nominal power L35L35 800 W @ 60 Hz
Max. power 1.09 kW
Fuse 16 A (T)
Connection Connection terminal block
External circuit: IP24
Internal circuit: IP54
CE, RoHS

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7. Performance Graph
T = Ambient temperature
P = Cooling capacity

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8. 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.
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
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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.
Use of mounting template
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
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reactivation
Fix the mounting template in the required position on the outer surface of the cabinet
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Drill the holes and cut the apertures in the required positions in the surface of the cabinet and
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remove the mounting template
Stick the self-adhesive unit seals on the outer surface of the cabinet for externally mounting and on
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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.

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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
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Screw the M6 hex. head screws together with the washers and locking washers into the M6 threaded
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rivets in the uni
The resistance of the earth connection between cabinet and cooling unit must be < 0.1 Ω󰾬.
9. Mounting Principle
1 Cooling unit
2 Mounting gasket
3 Mounting surface
4 A6.4 Washers
5 A6.4 Toothed washers
6 M6 Bolt

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10. Cut out dimensions

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11. Dimensions (H x W x D)

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12. 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.
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See the connection details on the circuit diagram.
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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 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 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.
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Remove the fixing screws from the PCB cover and the earth wire from inside it.
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Lift off the PCB cover
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Using a screwdriver turn the alarm temp. potentiometer on the PC-board slightly to the right (higher)
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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
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cabinet's internal temperature
Close the unit as prescribed
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Check that the new setting meets requirements and if not repeat the above process.

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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:
Remove the bridge from terminals T1 & T2.
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Connect the door contact switch to terminals T1 & T2.
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The contact must be closed when the cabinet door is closed.
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13. Controller Layout Description
C1,2,3 Fan capacitors
C Connection terminals
M Mikrocontroller
Alarm Potentiometer alarm temperature
Temp Potentiometer cabinet temperature
T Transformator
TB Test button

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14. Wiring diagram
M1 Radial fan cold side
M2 Radial fan warm side
M3 Compressor motor
C1 Capacitor for M1
C2 Capacitor for M2
C3 Capacitor for M3
TVR1 NTC temperature filter
P Connection terminal
TB Test button
X1 Earth connector
R11 Control temperature potentiometer
R12 Alarm temperature potentiometer
1 L1 Live
4 N Neutral
PE Earth
6 P1 Alarm contact
7 P2 Alarm contact
Normal (with power ON) Alarm (with power ON)
8 T1 Door contact (bridged with T2)
9 T2 Door contact (bridged with T1)
AF Alternative fixing for M3/C3
Cable colors Temperature settings
a black Position Temp °C Alarm °C
b blue 1 20 25
c brown 2 25 30
d yellow 3 30 35
e grey 4 35 40
f pink 5 40 45
g red 6 45 50
7 50 55

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15. Taking into operation
Attention! The unit can be damaged by lack of lubricant.
To ensure that the compressor is adequately lubricated the oil, which has been displaced during
transport, must be allowed to flow back into it. The unit must therefore be allowed to stand for at least
30 min. after mounting before being connected to the mains and taken into operation. The unit is
controlled in relation to the cabinet internal temperature. A temperature sensor continuously
measures the temperature of the air which is drawn into the unit from the cabinet. The required
cabinet temp. can be set on the cabinet temperature potentiometer on the PC-board. The temperature
adjustment range is between 20°C (left-hand stop) and 50°C (right-hand stop). The potentiometer is
factory pre-set at 35°C.
To adjust the cabinet internal temperature please proceed as follows:
Remove the fixing screws from the unit cover and the earth wire from inside it.
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Lift off the cover.
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Remove the PCB cover.
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Using a screwdriver turn the cabinet temperature potentiometer on the PC-board slightly to the right
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(higher) or to the left (lower)
Close the unit in the prescribed manner.
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Check that the new adjusted values meet the necessary requirements. If necessary repeat the
procedure. The compressor together with the ambient radial fan are switched ON or OFF, depending
on the cabinet internal air temperature. Here the minimum shut-down time corresponds with the
start-up delay. The cooling mode will switch on as soon the desired temperature is reached. The start-
up delay is depending on the unit size 3 or 7 min. The cooling mode will switch off as soon as the
desired temperatur is undercut by 3K (hysteresis) and / or when the max. running time of 3 min. is
reached.
When the test button is pressed the compressor and the ambient fan will run for 120 sec. regardless of
the cabinet temperature. During this period the green LED on the PC-board will blink twice as fast as
normal. If the test button is pressed during the 120 sec. test-run, the unit will return to its normal
operational mode. The test-run should only be repeated after a minimum compressor shut-down time
of 10 min.
NOTE: 󰾬When the unit is taken into operation for the first time, a start-up delay of the cooling circuit for
ca. 4-7 min. independent of temperature setting and actual cabinet temperature will take place.

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16. Repair
Failure Reason Troubleshooting
Unit doesn't start
No power supply Check the electrical connection
Cabinet temperature is lower than
setpoint
Wait until the setpoint is reached. The unit will then
start automatically. If the setpoint of the cabinet
temperature is too high, reduce it accordingly.
Door contact is open Close the cabinet door or bridge the door contact.
Unit doesn't cool
Compressor is faulty Please get in contact with one of our service
partners.
The circuit breaker of the
compressor got activated
Check the cooling capacity. In case the cooling
capacity is too small, install the unit at a different
place or add another cooling unit.
The evaporator and / or condensor
are extremely dirty. Evaporator and /or condensor need cleaning
Evaporator is iced
up
Not enough refrigerant due to
leaking cooling circuit
refill refrigerant and re-seal cooling circuit. Please
contact the manufacturer.
Ambient temperature is much
lower than the allowed operating
temperature range
Install the unit at a different place. The ambient
temperature must be within the stated operating
temperature range.
The control cabinet is not sealed
properly. The control cabinet needs re-sealing.
Fan or fan capacitor on the cold
side are faulty Replace fan and/or fan capacitor.
Too much
condensate
Cabinet door not closed Ensure that cabinet door is closed porperly
The cabinet is not sealed properly The control cabinet needs re-sealing.
Incomplete gaskit between cooling
unit and cabinet Please check gaskit
Uneven air
circulation inside
the cabinet
Cabinet air intake and air outlet
are blocked Ensure that both are unblocked and air can circulate
Cabinet volume too big for this
cooling unit
Check the cooling capacity. In case the cooling
capacity is too small, install the unit at a different
place or add another cooling unit.
Condenser fan
doesn't work Fan is faulty Replace fan
Evaporator fan
doesn't work Fan is faulty Replace fan
Note: Before you contact one of our service partners please press the test button of the
controller. Like this the fans and the evaporator are getting switched on independent of the internal
cabinet temperature.
In cases of emergency you can contact us under one of the tel. numbers stated on the last page.
17. Maintenance & Cleaning
Danger from electrical voltage
Maintenance and cleaning must be carried out by specialists
(electricians). 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 reactivation.

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Danger through incorrect work on the unit
The instructions in the cabinet manufacturer’s manual must
be read.
Damage to the unit through incorrect maintenance
and repair.
Maintenance and repair of the refrigerant circuit must be
carried out by the manufacturer or another specialist.
Unit service and cleaning
All units are virtually maintenance-free.
Note: Please check on our website under download / service and maintenance for our new videos.
However the following points must be taken into account:
The service and cleaning of the unit must be undertaken by specialists. The personnel must ensure
that for the duration of the cleaning work the unit and the cabinet are disconnected from the electrical
supply and protected against unauthorized reconnection. The connections 1&2 and 3&4 are not low
voltage (<50V).
Regularly check the condenser profile for dirt.
●
Should the condenser need cleaning:
Disconnect the whole plant from the mains.
Clean the condenser profile as required by blowing it out with compressed air.
●
In cases of extreme pollution a cleaning fluid must be used.
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Danger from electrical voltage.
The unit must be removed from the control cabinet for wet cleaning! Instruction: Never use
aggressive cleaning fluids or materials.
Should fluid cleaning be necessary:
Disconnect the whole plant from the mains
Remove the unit from the cabinet
●
Ensure that the seals are not damaged
●
Remove the radial fan
●
Steam-clean the condenser profile or wash it with an environmentally safe cleaning fluid.
●
Instruction: After cleaning and drying the unit, there must be a two hour delay before the unit is
taken back into operation.
18. Maintenance
Attention! Only use original replacement parts when repairing the unit. This ensures that the unit
functions perfectly and remains safe. For further information and spare part ordering please contact
us by email under on one of the addresses stated on the last page.
Radial fan replacement: The normal working life of the fan is app. 40,000 working hours under
normal conditions. Should you still need to change the fan, please take note of the following:
Danger from electrical voltage
Maintenance work on the unit must be carried out by specialists (qualified electricians). The personnel
must ensure that for the duration of the work the unit and the cabinet are disconnected from the
electrical supply and protected against unauthorized reconnection.

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Disconnect the unit from the mains
●
Remove the unit cover
●
Remove the fixing screws from the relevant fan
●
To replace the cold side fan the PC-board must also be removed
●
Disconnect the fan cable from the PC-board
●
Mount a new radial fan
●
󰾬
Danger 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. The fans should have clockwise rotation.
Replace the 4 fan fixing screws
●
Connect the fan cable to the PC-board and replace the board if necessary
●
Dispose the old fan according to the environmental laws and
regulations.
19. Transport & Storage
Malfunction due to transport damage
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.
The unit can only be stored in locations which meet the following conditions:
temperature range: - 40°C to + 70°C
●
Relative humidity (at 25°C): max. 95 %
●
Returning the unit
To avoid transport damage the unit should be returned in the original packing or in a packing case and
must be strapped to a pallet. If the unit cannot be returned in the original packing please ensure that:
A space of at least 30 mm. must be maintained at all points between the unit and the external
●
packing.
The unit must be firmly fixed in the packing.
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󰾬The unit must be protected by shock resistant padding (hard foam corner pieces, strips or cardboard
●
corner pieces).

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20. Parts supplied
1 x Cooling unit
1 x CE Declaration
1 x Cable tie 3.6 x 200mm
1 x Mounting template
1 x Hose connector
1 x Clear condensation drain hose
1 x sealing kit
6 x Hexagonal head screws M6 x 20 DIN 933
6 x Washer A6.4 DIN 125
6 x Tooth lock washers A6.4 DIN 6797
4 x Sealing plug for threaded rivet M6
2 x Eye bolts M10
1 x Hose clip
3 x PVC washer PD13 for G1/4”
Seifert Systems GmbH Seifert Systems Ltd. Seifert Systems AG Seifert Systems Inc. Seifert Systems Pty Ltd.
Haßlinghauser Str. 156 HF09/10 Wilerstrasse 16 75 Circuit Drive 105 Lewis Road
Hal-Far Industrial Estate North Kingstown Wantirna South
58285 Gevelsberg Birzebbuga, BBG 3000 4563 Gerlafingen RI 0285 3152 Victoria
Germany Malta Switzerland USA Australia
Tel. [phone] Tel. [phone] Tel. [phone] Tel. [phone] Tel. [phone]
Fax [phone] Fax [phone] Fax [phone] Fax [phone] Fax. [phone]
[email protected] [email protected] [email protected] [email protected] [email protected]