Tefcold EXPRESS EX125C User manual

TEFCOLD EXPRESS
Vertical Refrigerated Display Cabinets
Full Height Chilled Integral Multi-Decks
2021
INSTRUCTIONS
MANUAL

Table of Content
1Introduction .................................................................................................................................................................................................. 4
1.1 Important Notes..............................................................................................................................................................4
1.2 Product Temperature Classes .........................................................................................................................................5
1.3 Climate Classes................................................................................................................................................................5
1.4 Air Velocity......................................................................................................................................................................5
1.5 Safety Instructions ..........................................................................................................................................................5
1.6 Electrical Safety Tests (EST).............................................................................................................................................6
1.7 Risk Analysis....................................................................................................................................................................7
1.8 Working with Refrigerant R449A ...................................................................................................................................7
2Cabinet Use 10
2.1 Important.....................................................................................................................................................................10
2.2 Shelf Loading for Proper Cold Air Circulation................................................................................................................10
2.3 Shelf Loading for Safety ................................................................................................................................................11
2.4 Filling with products on starting up...............................................................................................................................11
2.5 Exterior factors for placing the cabinet.........................................................................................................................11
2.6 Cabinet Cleaning ...........................................................................................................................................................12
2.6.1 Health & Safety Warnings and Information.........................................................................................................12
2.6.2 General Requirements to be ConsideredDuring Cleaning ..................................................................................12
3Troubleshooting ............... ............................................................................................................................................................................ 14
3.1 Recommendation..........................................................................................................................................................14
3.2 Cause –Recommended Solutions.................................................................................................................................15
4Controls ................................................................................................................................................................................................ 17
4.1 How to Use “CAREL PJEZC Temperature Controller” ....................................................................................................17
4.1.1 General Appearance............................................................................................................................................17
4.1.2 Introduction & General Descriptions...................................................................................................................17
4.1.3 Display.................................................................................................................................................................17
4.1.4 Keypad.................................................................................................................................................................18
4.1.5 Functions Available from the Keypad..................................................................................................................18
4.1.6 Alarms .................................................................................................................................................................19
4.1.7 Temperature Control...........................................................................................................................................19
4.1.8 Liquid Management ............................................................................................................................................19
5Controller Setting Parameters................................................................................................................................................20
5.1 CAREL PJEZC (MASTER) .................................................................................................................................................20

5.1.1 Common Defrost.................................................................................................................................................22
6Wiring Diagrams .....................................................................................................................................................................23
6.1 Tefcold Express EX125C OPEN FRONTED ......................................................................................................................23
6.2 Tefcold Express EX187C OPEN FRONTED .....................................................................................................................24
6.3 Tefcold Express EX250C OPEN FRONTED ......................................................................................................................25
6.4 Tefcold Express EX125CD WITH DOOR .........................................................................................................................26
6.5 Tefcold Express EX187CD WITH DOOR .........................................................................................................................27
6.6 Tefcold Express EX250CD WITH DOOR ...........................................................................................................................28
7Cabinet Technical Details........................................................................................................................................................29
7.1 Side Elevations ..............................................................................................................................................................29
7.1.1 Open Fronted ......................................................................................................................................................29
7.1.2 Double Pane Glazing Door (Hinged) ....................................................................................................................30
7.1.3 Case lengths ........................................................................................................................................................ 30
7.2 Cabinet Data Plate Descriptions....................................................................................................................................33
7.3 Refrigeration.................................................................................................................................................................34
7.4 Noise Breakout..............................................................................................................................................................34
8Service and Maintenance .......................................................................................................................................................35
8.1 Access to fans................................................................................................................................................................35
8.2 Access to drainage outlets ............................................................................................................................................35
8.3 Access to cabinet electrics and controls .......................................................................................................................35
8.4 Condensing Unit Acccess .............................................................................................................................................36
8.5 Refrigeration, Electrical and Drainage Connections......................................................................................................37
8.5.1 Refrigeration .......................................................................................................................................................37
8.5.2 Refrigerant Charge Limits....................................................................................................................................38
8.5.3 Electricity.............................................................................................................................................................38
8.5.4 Plugs....................................................................................................................................................................39
8.5.5 Cabinet Lighting...................................................................................................................................................39
9Instructions for Delivery .........................................................................................................................................................40
9.1 Transportation ..............................................................................................................................................................40
10 Installation.........................................................................................................................................................................41
10.1 Unpacking .....................................................................................................................................................................41
10.2 Minimum Clearances for Placing the Cabinet...............................................................................................................41
10.3 Removing from Wooden Pallet.....................................................................................................................................42
10.4 Levelling and Door Alignment (if fitted)........................................................................................................................43
10.5 Assembly of Wall Spacers .............................................................................................................................................46

10.6 Shelf profiling & Fitting of accessories .........................................................................................................................46
10.7 Power Supply ...........................................................................................................................................................49
11 Dismantling and Disposal...................................................................................................................................................51
12 Maintenance......................................................................................................................................................................52

1 Introduction
The TEFCOLD EXPRESS cabinets are retail refrigerated display cabinet with integrated condensing
units for displaying chilled food. This cabinet is designed and built at TEFCOLD for storing chilled
products. It cannot be used to cool hot and/or non-chilled products.
This manual has to be read before handling or installing or using the product. This manual
contains necessary information about installation at the beginning, maintenance operation
during cabinet life and important Health & Safety considerations.
TEFCOLD Refrigeration reserves the right to change at any moment any part or any information
in this document to achieve better and safer product usage.
1.1 Important Notes
The manual is an integral part of the equipment and should always accompany the product in the
event of a transfer to a new location or to a new owner. The user is responsible for the integrity
of these documents, for their consultation and during the whole life cycle of the equipment itself.
Keep this manual in a safe place. It should be available for consultation near the equipment at all
times. If lost or destroyed, you can request a copy of the manual from TEFCOLD by specifying the
exact model, serial number and year of manufacture.
This equipment is not intended for use by persons (including children) with reduced physical,
sensory or mental capabilities or by persons lacking the necessary experience and knowledge,
unless they are supervised by a person responsible for their safety who has instructed them on
how to use the equipment.
Always refer to this manual before going ahead with any operation. Before doing any type of
work, disconnect the equipment from the power supply. Any work on electric and electronic parts
or cooling system components should only be carried out by trained personnel in compliance with
current laws.
The Manufacturer cannot be held liable for any injury to persons or animals, or damage to the
product itself in the event of:
•improper use of the equipment or use of the appliance by unqualified or unauthorised
personnel
•failure to comply with current legislation
•incorrect installation and/or power supply faults;
•failure to observe the instructions contained in this Manual;
•failure to follow the maintenance programme;
•Unauthorised modifications;
•installation of non-original spare parts in the equipment;
•installation and use of the equipment for purposes other than those for which the
appliance was designed and sold;

The buyer is responsible for training personnel using the appliance on the risks, safety devices
and general health and safety rules required by the laws of the country where the appliance is
installed.
Users/operators should be aware of the position of all the controls and how they work, as well as
of the features of the appliance.
They should also read this manual in it’s entirely.
Maintenance work should be conducted by qualified personnel after the appliance has been
prepared adequately.
1.2 Product Temperature Classes
PRODUCE &BWS H1 (warmer than or equal to +1˚C, colder than or equal to+10˚C)
DAIRY M2 (warmer than or equal to -1˚C, colder than or equal to +7˚C)
MEAT M1 (warmer than or equal to -1˚C, colder than or equal to +5˚C)
1.3 Climate Classes
The TEFCOLD EXPRESS cabinets are designed to maintain nominal product temperatures above
referring to EN ISO 23953-2:2015 in an ambient environment of 25˚C dry bulb temperature and
60% relative humidity (Class3).
CLASS 3
Dry Bulb Temperature
Relative Humidity
25˚C
60%
Dew Point
Water vapour mass in dry air
16.7˚C
12.0g/kg
Ambient environment tolerances are;
•±1 °C of the dry bulb temperature (warmer than or equal to +24˚C, colder than or equal
to +26˚C)
•±3 units of the relative humidity percentage (higher than or equal to 57%, lower than or
equal to 63%)
1.4 Air Velocity
The horizontal air currents parallel in front of the cabinet shall lie between 0,1m/s and 0,2m/s
(in longitudinal direction).
1.5 Safety Instructions
TEFCOLD recommend that any person who interacts with the cabinet or cabinet sub
components reads these instructions completely before starting to operate the equipment.
Only authorised, qualified, competent personnel can be involved with the installation, setting to
work or carrying out service and maintenance on this equipment.

The water which comes from the cabinet’s evaporator during defrost period, has to be drained
to the two drip trays, one evaporates wtare from the condenser pipework, if this reaches its
capacity it drains into a drip tray controlled by an electrical heater to evapoarte the water.
Sections with the below sign, should only be accessed by authorized personnel. Do not forget that
electricity can be fatal.
Do not store explosive substances such as aerosol cans with a flammable propellant in this
cabinet.
Children should be supervised to ensure that they do not play with the cabinet.
Do not let children enter inside of the refrigerator. There is a risk of children entrapment.
Follow the instructions below in a case of gas escape or fire:
•If there is gas escape from the refrigerator, ventilate the room. If it cannot beventilated
leave the room.
•In case of fire follow the fire safety instructions applicable to that location.
1.6 Electrical Safety Tests (EST)
Making a product “safe” requires an understanding of the “hazards” that exist in each electrical
product. Certain potential hazards are inherent in all electrical products because of the manner
in which they are powered and how they perform their intended functions. Even though a product
requires an electrical power source and uses electrical or electronic components, it should not
present an electrical shock hazard to the user.
Every single cabinet manufactured by TEFCOLD is subjected to stringent electrical tests below in
compliance with EN60335.
Electrical shock hazards are prevented by TEFCOLD with following Electric Safety Tests:
1. Dielectric Withstand Tests
2. Insulation Resistance Tests
3. Leakage Current Tests
4. Ground Continuity Tests
5. High Voltage Tests

TEFCOLD highly recommend that the cabinet is only connected to a power supply protected by
an earth leakage relay.
In the event of an electrical fault the equipment must be electrically isolated immediately and
power must not be restored until authorised by competent electrical personnel.
1.7 Risk Analysis
The below Risk Analysis tables show potential problems and who may be affected. The aim of
these tables is to prevent possible problems or injuries before they occur.
•Use of electrical Isolator
WHO
WHAT
REDUCTION
Store personnel
Electrical Shock
Live parts mech. covered
Store personnel
Falling whilst using isolator
Correct use approved steps
•Electrical Maintenance
WHO
WHAT
REDUCTION
Maintenance Personnel
Electrical Shock
Isolate before working
Maintenance Personnel
Falling whilst using isolator
Correct use approved steps
•Cleaning cabinet
WHO
WHAT
REDUCTION
Cleaning personnel
Strain
Only lift single panels
Cleaning personnel
Scratch and impact
Training in correct method
Others in area
Scratch and impact
Clean when store closed
•Cleaning Fans and Drain Area
WHO
WHAT
REDUCTION
Cleaning personnel
Revolving fan blades
Electrically isolate cabinet
Fans protected by guards
Cleaning personnel
Bending down low
Training in correct method
Others in area
Scratch and impact
Clean when store closed
1.8 Working with Refrigerant R449A
Only qualified Refrigeration Engineers with the appropriate qualification may work on this
equipment. In particular, the refrigeration system must only be opened and worked on by
qualified persons

2 Cabinet Use
2.1 Important
•Do not put warm or un-chilled products into the cabinet. It is designed to hold pre-chilled
products, not to cool them.
•Do not leave the cabinet doors open (if fitted).
•Do not block the space between the front of the shelves and the glass with product, signage
or point of sale as this will affect airflows resulting in warm products.
•Do not block the grilles at the front of the cabinet or stack products in front of them as this
will cause the cabinet to overheat and stop working correctly.
•Do not overload the shelves or block the grilles inside the cabinet. The cabinet requires air
space to allow the cold air to circulate around the cabinet to keep the products chilled.
2.2 Shelf Loading for Proper Cold Air Circulation
Always allow air space between the products in order to maintain cold air circulation and do not
block air grills. Failure to enable cold air to circulate as designed can lead to product temperature
not being maintained and can affect the functionality of the cabinet refrigeration system.

2.3 Shelf Loading for Safety
Merchandising of the cabinet must be equally distributed through the cabinet. Heavy weighted
products must be placed to deck tray or closer for rigidity of cabinet. Start product loading from
deck tray, if some part of the cabinet is going to be left empty, for product loading prefer lower
shelves not the top ones.
2.4 Filling with products on starting up
After turning on the cabinet for the first time or when it has been turned off for cleaning it is
necessary to allow the cabinet to cool down to operating temperature before loading products.
Wait minimum 2 hours after turning on before merchandising.
2.5 Exterior factors for placing the cabinet
•Ambient temperature and humidity values should not exceed 25°C DBT / 60%RH (Class3; EN
ISO 23953).
•Horizontal air velocity measured in front of the cabinet shall lie between 0,1m/s and 0,2m/s.
•Check the air conditioning, ventilation and heating devices in the shop should be working
efficiently.
•Air stream and air intakes should not be directed towards the cabinet openings and the
goods displayed should not be exposed to direct sunlight.
•Prevent the temperature increment of radiating surfaces in the shop e.g. installation ceiling.
•Check for other sources of radiant heat in the area and eliminate e.g. sun shining through
roof lights or windows, heated pipework, heated display cabinets and cooking equipment.
•The air inlets and vents on the cabinet should not be closed with products, labels,
accessories so on.

2.6 Cabinet Cleaning
2.6.1 Health & Safety Warnings and Information
Switch off power supply of the cabinet from the main switch.
To minimise shock and fire hazards, please do not plug or unplug the unit with wet hands.
Care must be taken when handling or working on the unit as sharp edges may cause personal
injury, we recommend the wearing of suitable PPE.
Ensure the correct moving and lifting procedures are used when relocating a unit.
Around of the cabinet can be wet and slippery.
Do not touch hot, cold and movingparts.
2.6.2 General Requirements to be Considered During Cleaning
Neutral detergents, soap and water should be used for cleaning the parts.
Rinse with clean water and dry with a soft cloth.
It is recommended that the drainage is kept clear and free running by pouring clean water down
to drain every 3 months.
Rinse and remove water and debris using a wet vac.
Clean glass surfaces with using glass cleaning products. Never use hot water on glass as this may
‘shock’ the glass and cause ‘thermal breakage’, i.e. shattering of glass due to sudden temperature
change.
Stainless steel can be subject to surface discoloration or “tea staining”. This can be removed with
an appropriate cleaning agent that contains 10% Sodium citrate.
Do not use abrasive products and solvents that may cause any scratches to the surface of the
cabinet. Never scour with hard objects any parts of the cabinet. Scouring pads, steel brushes,
screwdrivers or chemicals may cause damage by scratching or dulling polished surface finishes.
Never clean components using inflammable materials, such as alcohol, acetone or solvents.
Never use high-pressurized water.

Do not directly apply water to fan motors or any other electrical components in the cabinet.
Always be careful to minimize moisture on and near the electrical components. Cleaning of
electrical components must be done by Qualified Maintenance Technician.
When working inside the cabinet takes care not to damage any components such as fan blades
or probes and ensure no strain is put on any cables.
Once a final check has been carried out to ensure the display cabinet is fully assembled the
electrical isolator should be unlocked and turned on. The cabinet will start to operate again.
The alarms can then be re‐activated, double check that alarms are operational before
allowing the display to be re-merchandised.

3 Troubleshooting
Should your cabinet not be operating efficiently?
Before calling the technical service, check these points given in sections 3.1 Recommendation
and 3.2 Cause –Recommended Solutions can be used for troubleshooting.
3.1 Recommendation
Check following conditions:
•Only products which are already refrigerated to the correct cold chain temperature should
be loaded in to the cabinet.
•The cabinet temperature should be stable.
•Do not overload the cabinet; take the loading limit into consideration.
•Considering the foodstuff turnover, the first loaded goods should be sold first. (Apply first in
first out procedure.)
•Check the displayed foodstuff and the operation temperature of the cabinet regularly at
least twice a day.
•Replace the goods right away, if any failure occurs on the cabinet.
•If you find any fault parts, move it right away (burnt out LED lamps, loosened parts etc.)
•Check the automatic defrosting of the cabinet regularly.
•The draining of the defrost water and the water evaporation has to be checked regularly.
•If any unexpected condensation occurs than call a qualified refrigerator technician.
✓Thermostat settings should not be charged frequently.
✓Any maintenance work not mentioned in this manual should be done by authorized
personnel
✓The manufacturer cannot be held responsible for incorrect or inappropriate use of the
equipment.

3.2 Cause –Recommended Solutions
Malfunction
Causes
Recommended Solutions
Compressor is out of order
No power on compressor
Check if there is a power cut on the network
Check if the power supply conditions are the same
as it is defined in the technical label.
Check if the board connections are tight.
Either main isolator switch is closed or
circuit breaker is blown
Check if the main isolator switch is on or there is any
problem with circuit breakers
One of pressure switches has cut the
circuit out
Manually reset HP pressure switch if it cuts the
compressor out
The cabinet is defrosting
Approximately wait for one hour. If compressor still
stays off, call for technical assistance
Clogging of condenser
Clean up the condenser
Condenser fans are failed to run
Call for technical assistance
HP/LP pressure control switch cuts-out
the compressor
Call for technical assistance
Electronic controller is defective
Call for technical assistance
Compressor
works continuously
Compressor contactor is adhered or
any other problem is occurred
Call for technical assistance
The refrigerant is not adequate in the
circuit
Call for technical assistance
Setting parameters are wrong
Check set value and other setting parameters
Cabinet is overloaded or storage of
products is wrong
Check loading of products and analyse if any factor
prevents air circulation
The cabinet has no capability of
refrigeration
Clogging of condenser (condenser is
dirty)
Clean up the condenser
Compressor is out of order
Follow the instructions described above
Clogging of evaporator (ice or snow
formation)
Manually defrost the cabinet and check the setting
values of the defrost
Cabinet is overloaded or storage of
products is wrong
Check loading of products and analyse if any factor
prevents air circulation
Cabinet is placed close to a heat or light
source or affected by air movement
Change the position of the cabinet or remove the
heat sources
Setting parameter(s) is wrong
Check set value and other setting parameters
Illumination is
not functioning
Lighting switch is off
Turn the switch on
LEDs and/or LED driver(s) are defective
Replace
Electrical system of the cabinet is
malfunctioned
Call for technical assistance

Malfunctio
n
Causes
Recommended Solutions
Abnormal sound
from the cabinet
Some nuts, bolts or moving
parts are loosened
Check and tighten. If it is necessary, replace
Fans are touching an object or
connection screws are loosened
Check if there is an object that touches the
evaporator fans. Fix it by tightening the
loosened parts
A failure in mechanical parts
Call for technical assistance

4 Controls
4.1 How to Use “CAREL PJEZC Temperature Controller”
4.1.1 General Appearance
4.1.2 Introduction & General Descriptions
Easy is electronic microprocessor controller with LED display, developed for the management of
refrigerating units, display cabinets and showcases. The structure of the parameters has been
enhanced with new functions for more dynamic and effective management of the temperature
control and defrost. The most complete solution for low temperature ventilated units, with three
relays for complete control of the compressor, fan and defrost functions.
4.1.3 Display

4.1.4 Keypad
4.1.5 Functions Available from the Keypad
▪ON & OFF the Instrument:
Switching the instrument ON: press UP for more than 3 s (when pressing the button, the
display shows ON).
Switching the instrument OFF: press UP for more than 3 s. The display shows the
message “OFF”, alternating with the temperature measured by the set probe.
▪Set Point Setting (Desired Temperature Value)
The easy, easy compact and easy split devices control the desired temperature (set
point) inside the cabinet or cold room directly and dynamically.
To view and modify the set point:
▪Press SET for 1 s, the set value will start flashing;
▪Increase or decrease the value using UP or DOWN;
▪Press SET to confirm the new value.

▪Manual Defrost
Press DOWN for more than 3 s (activated only if the temperature conditions are right,
for easy split only if the light output is not set, H1≠4).
4.1.6 Alarms
4.1.7 Temperature Control
The temperature in the appliance is registered by two temperature sensors which are located in
the air flow after the evaporator (Sair) and on the evaporator (S5) respectively.
4.1.8 Liquid Management
Liquid injection in the evaporator is controlled by capillary tubes.