SEIFERT 43051001 120V 2120BTU Control Cabinet User Manual

: June 5, 2024
: SEIFERT

SEIFERT 43051001 120V 2120BTU Control Cabinet

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.

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
Unauthorized 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.

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. Unauthorized 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 unauthorized cabinet reconnection.
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 specialized 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 unauthorized disposal. All spare parts and associated material must be disposed according to the environmental laws.

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. ft 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 and +55°C. Units can be ordered with an additional electrical cabinet heater. For the cooling capacities and environmental ratings please refer to the type plate data.

Functional Principle

The cooling unit for enclosures works on the basis of a refrigeration circuit consisting of four main components: compressor (1), evaporator (2), condenser (3) and expansion device (4).
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 arrived 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.

Condensation management
In environments with humidity and low internal enclosure temperatures, condensation may form on the evaporator coil. Standard cooling units 43XXX0XXX have a drain socket towards the bottom of the unit for connection of the drain pipe. Cooling units 43XXX1XX include an internal condensate evaporator based on self-regulating PTC cartridges. Condensate is drained to an internal recipient where it evaporates when in contact with the cartridge surface. Resulting steam is directed towards the condenser. The PTC heater cartridge is permanently connected. The recipient has an overﬂow socket at the bottom of the unit, for which a drain pipe is supplied.

Technical Data

Order Number : 43051001
Cooling Capacity L35L35 :620 W
Cooling Capacity L35L50 :440 W
Compressor :Reciprocating compressor
Refrigerant / GWP :R134a / 1430
Refrigerant Charge : 163 g / 5.7 oz
High / Low Pressure :23.3 / 5.3 bar 338 / 77 psig
Operating Temperature Range :+10°C – +55°C
Air Flow Volume (System / Unimpeded) : Ambient air circuit: 435 / 550 m³/h Cabinet air circuit: 200 / 250 m³/h
Mounting : Wall mounted
Housing Material : Mild steel, powder coated
Dimension A x B x C (D+E) : 651.4 x 315 x 260 mm
Weight : 33.7 kg
Cut Out Dimension : 635 x 275 mm
Voltage / Frequency : 120 V ~ 60 Hz
Current L35L35 : 4.4 A
Starting Current : 19.1 A
Max. Current : 5.3 A
Nominal Power L35L35 : 440 W
Max. Power : 560 W
Fuse : 10 A (T)
Short-Circuit Current Rating Connection : 5 kA
Ingress Protection : IP 54
Approvals : Protection

Mounting

CAUTION: The power supply rating on unit rating plate must comply with mains rating.
CAUTION: 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.
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. 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.
Note: In case of 19″ rack mounted units please ignore the above mounting instructions.

Mounting Principle

WARNING : Do not use within the ﬁrst 15 minutes after installation!

M6 screws
M6 ﬂat washers
M6 toothed washers
Cabinet
Sealing tape
Cooling unit
Lifting hook
Fig. 1 Recessed
Fig. 2 External

Electrical Connection

WARNING: 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 unauthorized/accidental reconnection.
Ensure that the unit and the enclosure are switched off before opening the unit. While servicing and inspecting the unit, ensure that the necessary precautions are taken against the unit been switched back on accidentally. All wiring for unit installation must be done following the applicable national and regional regulations, as well as the provisions of the responsible power supply company.

Controller

The display shows the temperature in the range of -50°C to +150°C (-58°F to +302°F). The temperature is displayed with resolution of tenths between -19.9°C and +99.9°C (-3.8°F to +211.8°F). During programming, it shows the codes and values of the parameters. The display also shows icons according to occurring events.

Display Icons

FUNCTIONS

Compressor relay active
Alarm relay active
Heater relay active
Ambient blower relay active
Alarm
Heating mode
Cooling mode
TEST Test mode in progress

Description

Flashes when activation is delayed or inhibited by protection times, external disabling or other procedures in progress
Flashes when alarms are active
Signals operation of unit in heating mode
Signals operation of unit in cooling mode
Activated only by manual procedure

Programming
The operating parameters can be modiﬁed using the front keypad. Access diﬀers depending on the type of parameter. Access to conﬁguration parameters is protected by a password that prevents unwanted modiﬁcations or access by unauthorized persons.
Setting cooling set point, St1:

Press “SET” and display should show St1 and then the pre-set value of St1. (default: +35°C / +95°F)
Reach the desired value by using ▲ or ▼.
Press “SET” again to save the new value of St1. Setting heating set point, St2 (only for units supplied with internal heater):
Press “SET” twice slowly and display should show St2 and then the pre-set value of St2. (default: +5°C /+41°F)
Reach the desired value by using ▲ or ▼.
Press “SET” again to save the new value of St2. Setting temperature units (°C / °F), low temperature alarm and high temperature alarm:
Press “PRG” button for 5 seconds to reach the modiﬁable parameter list.
Use ▲ or ▼ to reach the desired parameter:
- C18 for temperature unit of measure
- °C = 0
- °F = 1
- P25 for low temperature alarm threshold (default -10°C / +14°F) P26 for high temperature alarm threshold (default +55°C / +131°F)
Press “SET” on the desired parameter to display the current value.
Use ▲ or ▼ to reach the desired value.
Pressing “SET” temporarily saves the new value and returns to the parameters list.
Repeat steps 2-5 to set other parameters.
Press “PRG” for 5 seconds to permanently save the new values.

Test function
Diﬀerent test functions can be used depending on the combination of keys pressed. Such tests run for the duration of 4 minutes.

“SET+▲” tests Compressor and Ambient Blower relays. “
SET+▼” tests Alarms and Heater relays

Alarm Relay Operation
Both normally closed (NC) and normally open (NO) alarm contacts are provided. Under normal conditions, the NC contact is closed and the NO contact is open. When an alarm condition is present, the NC contact will open and the NO contact will close.

STATE : ALARM : DISPLAY

System powered OFF
System powered ON
- NO ALARM
- Door Contact Closed
System powered ON
- Door Contact Open
System powered ON
- ALARM STATE

Notes:

State 2: Additional icons (1,3,4, Reverse, Direct, Test) depending on operation.
State 3: The display shows “OFF” alternating with the standard display.
State 4: The display shows “EXX” alternating with the standard display – at the same time, the alarm icon ﬂashes.

Typical alarm codes:

Error Code Description

E01: Probe B1 fault
E02: Probe B2 fault
E04: High temperature alarm
E05: Low temperature alarm

Important Notes

Whilst programming, if no button is pressed for 10 seconds, the display starts ﬂashing, and after 1 minute returns to the main display without saving changes.
To increase scrolling speed, press and hold the ▲ or ▼ button for at least 5 seconds.
When pressing “PRG” for 3 seconds, the ﬁrmware revision code is displayed for 2 seconds.
When cleaning the controller panel, do not use ethanol, hydrocarbons, ammonia or their by-products. Use neutral detergents and water.
In order to protect the unit’s components, minimum relay output on (3 or 7 minutes) and oﬀ (4 minutes) times and minimum time (7 or 11 minutes) between activation of the same relay output are applied.
In case of digital inputs not conﬁgured, probes not ﬁtted or conﬁgured, or St2 not enabled on the controller the display shows ‘nO’.

Wiring Diagram

1 120V L1
2 /
3 N / L2
4 Earth
5 Alarm (NO) P1 6 Alarm (COM) P2 7 Alarm (NC) P3 8 Door T1
9 Door T2

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. before being connected to the mains and taken into operation. The unit / system must be protected with a MCB Type D or K.
Upon connection the internal fan will start working. If the temperature inside the enclosure is higher than the set value of the controller both the compressor and external air fan start working. Once the air inside the enclosure reaches the set temperature the compressor and external fan will stop.
The hysteresis is 3K, the minimum ON-time is 4 minutes, the minimum OFF-time is 3 minutes, for units with a cooling capacity of more than 1 kW is it usually 7 minutes. The unit is pre-set at 35°C, which is suitable for most of the electronic devices.

Troubleshooting

Failure	Condition	Cause	Solution
Unit doesn’t cool	Internal fan does not work	Power not connected.

Verify power supply
Internal fan works, external fan and compressor don’t work| Enclosure temperature is below setting temperature (St1)| Verify values of parameter “ St1 “
Door switch contact is open| Verify door switch
Controller doesn’t work| Replace controller
Internal fan works, external fan and compressor don’t work. Display shows alternating OFF and temperature| The sequence of the phases inside the power supply connector is incorrect| Change phases inside power supply connector
Unit doesn’t cool| External and internal fan work, compressor does not work| Compressor motor electrical failure| Have compressor replaced by qualiﬁed service technician
Capacitor for compressor failed| Replace capacitor
Compressor works, external fan doesn’t work| External fan needs to be replaced| Replace external fan
Enclosure temperature too hot| Compressor and fans (external and internal) work all the time| Cooling unit undersized| Enclosure needs a cooling unit with higher capacity
Compressor and external fan work in alternating mode (ON / OFF)| Thermal compressor protector triggered| Verify if ambient temperature is too high, clean condenser
Refrigerant leakage| Contact dealer / service Centre
Excessive condensate| Enclosure door open| Ambient air gets into the enclosure| Ensure door is closed, add a door switch and connect it to controller
Enclosure door closed| Enclosure IP protection class is below IP54| Seal all openings of the enclosure
Damaged or misplaced sealing strip| Repair sealing strip accordingly

Maintenance & Cleaning

DANGER: Always switch power supply oﬀ before starting any maintenance on the unit.

The cooling unit is generally maintenance free and can be operated without ﬁlters in most environments. For units with ﬁlters these should be checked, cleaned and if necessary replaced on a regular basis. In addition the unit should have regular functional tests (approx. every 2,000 hours depending on the grade of ambient pollution).

Disposal
The unit contains R134a refrigerant and small quantities of lubricating oil. Replacement, repairs and ﬁnal disposal must be done according to the regulations of each country for these substances.

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 shipped in the same position as it was mounted.
The unit must be protected by shock resistant padding (hard foam corner pieces, strips or cardboard corner pieces).