AHT IBIZA 100 NAM User manual

AHT Cooling Systems GmbH
08.10.2019 16:37
OPERATING MANUAL
IBIZA
MALTA
MANHATTAN
MIAMI
PARIS
SYDNEY
Multi-mode commercial refrigeration
equipment
Copyright © AHT Cooling Systems GmbH. All Rights Reserved.
SNr. 406054
Status: 10/19

AHT Cooling Systems GmbH
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Original operating manual. Keep for future reference.
MODEL TYPES - OVERVIEW
Multi-mode commercial refrigeration equipment
Model
Dimensions
Length x Depth x Height
Maximum total weight
unit *
[mm]
[in]
[kg]
[lb]
IBIZA
100 NAM 1 000 x 851 x 925 39.37 x 33.50 x 36.42 95 209
145 NAM 1 456 x 851 x 925 57.32 x 33.50 x 36.42 115 254
MALTA
145 NAM 1 456 x 855 x 833 57.32 x 33.66 x 32.80 125 276
185 NAM 1 851 x 855 x 833 72.87 x 33.66 x 32.80 150 331
MANHATTAN
175 NAM 1 753 x 995 x 910 69.02 x 39.17 x 35.83 150 331
210 NAM 2 103 x 995 x 910 82.80 x 39.17 x 35.83 165 364
MIAMI
145 NAM 1 457 x 854 x 833 57.36 x 33.62 x 32.80 115 254
185 NAM 1 850 x 994 x 834 72.83 x 39.13 x 32.83 145 320
210 NAM 2 102 x 854 x 833 82.76 x 33.62 x 32.80 160 353
250 NAM 2 502 x 854 x 833 98.50 x 33.62 x 32.80 180 397
PARIS
145 NAM 1 457 x 853 x 833 57.36 x 33.58 x 32.80 110 243
185 NAM 1 854 x 853 x 833 72.99 x 33.58 x 32.80 140 309
210 NAM 2 102 x 853 x 833 82.76 x 33.58 x 32.80 160 353
250 NAM 2 502 x 853 x 833 98.50 x 33.58 x 32.80 175 386
SYDNEY
175 NAM 1 752 x 993 x 910 69.98 x 39.09 x 35.83 180 397
213 NAM 2 132 x 993 x 860 83.94 x 39.09 x 33.86 175 386
223 NAM 2 232 x 993 x 860 87.87 x 39.09 x 33.86 180 397
230 NAM 2 302 x 993 x 910 90.63 x 39.09 x 35.83 205 452
250 NAM 2 502 x 993 x 910 98.50 x 39.09 x 35.83 215 474
XL 175 NAM 1 752 x 1 043 x 910 69.98 x 41.06 x 35.83 160 353
XL 210 NAM 2 102 x 1 043 x 910 82.76 x 41.06 x 35.83 205 452
XL 250 NAM 2 502 x 1 043 x 910 98.50 x 41.06 x 35.83
225
496
*Execution-specific deviations possible. For details, please refer to the freight documents. These must be
carried out by the operator.
Technical specifications are subject to change without notice.

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Table of contents
MODEL TYPES - OVERVIEW ................................................................................................................ 2
1Safety....................................................................................................................................... 4
General information for the manual and safety ....................................................................... 4
Limitation of liability ................................................................................................................. 4
Explanation of symbols............................................................................................................ 4
Intended purpose..................................................................................................................... 5
Staff requirements ................................................................................................................... 6
Personal protective equipment ................................................................................................ 6
Specific hazards ...................................................................................................................... 6
Electricity ................................................................................................................................. 6
Refrigerant circuit..................................................................................................................... 7
Flammable refrigerant ............................................................................................................. 7
Mechanical hazards................................................................................................................. 8
Residual risks .......................................................................................................................... 9
2Product description ................................................................................................................ 10
General information ............................................................................................................... 10
Technical data ....................................................................................................................... 10
Serial plate and serial number............................................................................................... 10
Intended purpose................................................................................................................... 10
3Layout and function ............................................................................................................... 10
Automatic defrost................................................................................................................... 11
4Operating and display elements ............................................................................................ 11
Temperature display.............................................................................................................. 11
Operating panel and display elements .................................................................................. 11
Electronic controller AHT (SECOP)....................................................................................... 11
Switch refrigeration function on/off ........................................................................................ 11
Setting selection .................................................................................................................... 11
Semi-automatic defrost.......................................................................................................... 12
Alarm indication and acknowledgment.................................................................................. 12
5Transport and storage ........................................................................................................... 12
6Unpacking.............................................................................................................................. 12
7Setup and installation ............................................................................................................ 13
Electrical connection.............................................................................................................. 14
Electrical protection ............................................................................................................... 14
8Commissioning ...................................................................................................................... 15
9Operation (use)...................................................................................................................... 15
Loading .................................................................................................................................. 16
Decommissioning and Re- commissioning ........................................................................... 16
Decommissioning .................................................................................................................. 16
Re-commissioning ................................................................................................................. 16
Faults in operation ................................................................................................................. 16
10 Maintanance .......................................................................................................................... 17
Cleaning................................................................................................................................. 17
Basic cleaning........................................................................................................................ 17
Cleaning steps during operation............................................................................................ 17
Cleaning steps only with cooling function switched off (manual defrost) ............................. 18
Maintenance, service and repair ........................................................................................... 18
What to do if … ...................................................................................................................... 19
Maintenance services ............................................................................................................ 19
11 Disposal ................................................................................................................................. 19

AHT Cooling Systems GmbH
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1 Safety
General information for the manual and safety
This operating manual (hereinafter the “manual”) forms part of the device and enables a safe and efficient
operation. The safety section provides information about important safety aspects for the protection of persons,
things and materials. Task-related warnings/notes are contained in the individual chapters.
The complete manual can be found electronically on our website www.ahtusa.net or contact us at:
AHT Cooling Systems USA, Inc.
7058 Weber Blvd. Ladson, SC 29456 USA
Phone: [phone] Fax: [phone] Email: inf[email protected].at
This manual is intended for the following target groups:
Operator
Operating staff
Qualified staff: AHT service partner, AHT service technician, AHT customer service, AHT installation
service, AHT assembly service
Staff: This term is used when the manual is addressed to all target groups.
This manual must be available and accessible to the local staff.
The staff must read the manual carefully before use.
All figures represent symbolic representations.
Limitation of liability
All the details in this manual were compiled in consideration of the standards and legal regulations applicable at
this time, as well as the experience of the manufacturer and qualified staff. The manufacturer accepts no liability
for damage to persons or things (devices, goods, etc.) resulting from:
Non-observance of the manual and the regulations/safety instructions contained therein.
Failure to comply with the local safety regulations.
Inappropriate use (misuse)
Use of unauthorized and non-trained staff.
Unauthorized equipment conversions and technical modifications by the operator himself.
Use of non-approved spare parts by the manufacturer.
Failure of the power supply or electro technical safety devices.
Typesetting and print errors.
Failure to observe the above points will invalidate the warranty claims.
The contractual obligations agreed to under the contract, the general terms and conditions of sale and delivery
of the “AHT Cooling Systems GmbH” (hereinafter “AHT”) and the statutory provisions applicable at the
conclusion of the contract apply.
Technical specifications are subject to change without notice.
The local commercial law regulations and safety regulations/provisions and the essential health and safety
requirements of the unit apply.
Explanation of symbols
Safety and warning notices are indicated in this manual by symbols and signal words. Signal words refer to
the risk level of the hazard.
Signal word
Meaning
Hazard with moderate risk level.
Could result in danger to life or serious injury if not avoided.
Hazard with low risk level.
Could result in minor or moderate injury if not avoided.
Individual notes or important collective notes to avoid material or property
damage.
CAUTION
NOTICE
WARNING

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Symbol
Meaning
Symbol
Meaning
General warning sign
Refer to instruction
manual/booklet
Warning: Electricity
Warning: Electricity
Do not connect damaged
power cables to the circuit
Disconnect before carrying out
maintenance or repair
Wear eye protection
Warning: Flammable material Wear protective gloves
Warning: Slippery surface
Separate collection for electrical
and electronic equipment
Warning: Crushing of hands
Marking of explosion protection
Warning: Forklift trucks and
other industrial vehicles
-
•
listing
listing notice/
safety and warnings
Warning: risk of tilting
►
Action/Measure/Prohibition
Warning: Low temperatures/
freezing conditions
→
Cross-reference to a different
place in the document
Warning: Hot surface
Unit-connection cable
Do not walk or stand here
Light-connection cable
Do not bore
Do not obstruct
Intended purpose
For storing, displaying or dispensing of pre-packed ice cream, pre-packed frozen or medium
temperature foods depending on setting (see → chapter 2.2 and 2.3).
The operator is responsible for the correct operation of the unit.
Operate the unit in a stable position (horizontal alignment).
Operate the unit only on the installed stilt or castors.
Observe installation instruction see → chapter 7.
Operate the unit only with glass lids.
WARNING
Hazards due to misuse.
►No technical modifications may be made to the unit.
►Steam or high-pressure cleaners may not be used for basic cleaning.
►Do not store explosive substances, e.g. aerosol containers with flammable propellant gas, in
this unit.
►The unit may only be operated if all the required safety devices are present and fully
functional.
NOTICE
•Material-and property damage due to misuse.
►Do not exceed ambient conditions shown at the serial plate (see →chapter 2.2.1).

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►The ambient temperature must not be less than 16°C (60.8°F).
►Regularly check that the unit is in good condition. Damage must be repaired immediately.
►Before storing the goods and during operation, the temperature must be checked for correctness (see →
chapter 4.1).
►Stored goods must be checked by the operator in the case of power failure (temperature control).
►Check regularly for foreign objects in the goods area. Incorrectly stored goods must be removed immediately.
►Check regularly that the glass lids are closed.
►Operation of a unit with a broken glass lid/glass element (crack, break) is no longer possible.
- Remove goods from the damaged unit and rearrange in a functional unit.
- Switch off the damaged unit after removing the goods (decommissioning →see chapter 9.2).
- Contact the maintenance service (see →chapter 10.4).
►Do not laminate glass surfaces with labels and foils.
►Observe the minimum distances to the boundary walls and to other units to avoid hindering the air
circulation (see →chapter 7).
►Do not use glass lids as a storage for various objects.
Staff requirements
WARNING
Insufficient qualification. Risk of injury.
►All activities may only be performed by qualified staff.
►The staff must read and understand this manual before starting work.
Operator:
•The operator must ensure that this manual has been read and understood by the operating staff
(training).
•The operator is responsible for the fact that faults during operation (e.g. alarms, temperature deviations, etc.) are
recognized by the operating staff and appropriate measures are taken (→see chapters 9.3 and 10.3).
Operating staff:
•The operating staff must be trained by the operator on the transferred tasks and possible dangers with the aid of
this manual.
•Only trained operating staff are allowed to operate and clean the device.
Qualified staff:
•Only AHT-authorized, qualified staff and specialists are allowed to perform work on the unit, e.g.:
Servicing (maintenance, service and repair).
•Only staff trained in handling flammable refrigerants may perform work on the refrigerant circuit of R-290 units.
•Only qualified electricians are permitted to work on the electrical system.
Persons (including children) with limited physical, sensory or mental abilities are allowed to operate the unit only
under supervision and after instruction, and must not perform any maintenance work. Children must not play
with the unit.
Working under the influence of alcohol and drugs is prohibited.
Personal protective equipment
Wear protective gloves
►Protection against heavy unit parts during unpacking, set up and installation and disposal.
►Protection against sharp edges, rotating parts and hot surfaces during maintenance, service and
repair work.
►Protection from contact with fluid/leaking refrigerant in the case of a broken seal in the refrigerant
circuit.
►Protection against low temperatures during loading and cleaning.
►When removing pieces of glass and glass splinters after glass breakage.
Wear eye protection
►Protection from contact with fluid/leaking refrigerant in the case of a broken seal in the refrigerant
circuit.
Specific hazards
Electricity
Work on the electrical system may only be performed by qualified staff.

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In the case of fault messages or damage to the unit, contact the maintenance service immediately (see →
chapter 10.4).
WARNING
Contact with live parts may cause electric shock. Risk of fire due to sparks or overloading.
►Do not connect any damaged unit or damaged parts (e.g. power cables) to the circuit.
►Check the safety devices for completeness and functionality.
►Guards and covers on the unit must not be removed.
►Before connecting to power, note the following:
Applicable local electrical safety regulations
Applicable standards and safety notices.
Information on the serial plate (see →chapter 2.2.1).
►In the case of damage to the unit during operation or if the electrical protection was triggered and
before maintenance work, observe the following safety rules:
1. Disconnect the unit (switch off all pins on all sides).
2. Secure the unit against restarting.
►Damaged parts must be replaced only by professionals, e.g.:
power supply cables
►Do not squeeze or bend power supply cords.
►Do not use extension cords or multiple power strips.
►Steam or high-pressure cleaners may not be used for basic cleaning (see →chapter 10.1.1).
►Concealed electrical parts must not be damaged. Drilling or other work on the unit is not
permitted.
Refrigerant circuit
Work on the refrigerant circuit may only be performed by qualified staff.
In the case of fault messages or damage to the unit, contact the maintenance service immediately (see →
chapter 10.4).
Flammable refrigerant
Safety and warning notes for units with flammable refrigerants.
WARNING
•The refrigerant R-290 belongs to safety group A3 according to ASHRAE 34.
The refrigerant used and the fill quantity are indicated on the power rating plate (see →chapter 2.2.1).
•The refrigerant is highly flammable.
If leaks occur, the refrigerant can escape and create an explosive gas/air mixture. This can lead to fire and
explosion with subsequent fire risk.
►Keep away from ignition sources (heat, sparks, open flames, hot surfaces).
►To remove condensation and for cleaning, use a damp cloth or sponge.
Do not use dry clothes or sponges for rubbing dry.
(Danger of electrostatic charging and sparking).
•Requirements for the installation area:
►The device must only be installed in well-ventilated areas.
►Do not install the unit in basements or lowered areas.
►Ducts and wall penetrations must be sealed close to the unit in accordance with fire protection laws.
•Fluid refrigerant causes frostbite on the skin.
►Protect hands and face from contact with fluid/leaking refrigerant.
►Wear protective goggles and gloves.
•Do not close the air vents in the unit housing. Use only original accessories.
•To accelerate the defrosting process, do not use any mechanical devices or other means (e.g. ice
scrapers).
•Do not damage the refrigerant circuit.
►Do not expose the unit during storage and transport to temperatures higher than 70°C (158°F).
►Avoid transmission of pulsations and vibrations to the unit.
►Avoid external force upon the unit such as careless movements with forklift trucks or floor
cleaning machines.
►Drilling or other work on the unit is not permitted.
►Do not squeeze or bend pipes

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•Do not operate any electrical devices (e.g. wet vacuum cleaners) within the refrigerator compartment that
are not of the type recommended by the manufacturer. Devices with explosion protection markings (see →
chapter 1.2) are permitted.
•Steam or high-pressure cleaners may not be used for the basic cleaning (see →chapter 10.1.1).
•Work on the electrical system and the cold system must only be performed by qualified staff (staff trained in
flammable refrigerants).
►Opening the refrigerant circuit and suctioning of the refrigerant may only be performed in a well-
ventilated area outside of business hours of the market (without customer traffic) or outdoors.
►Disconnect the unit before each maintenance/repair (see →chapter 9.2).
►Secure the unit against restarting.
►During repairs, a knowledgeable person who knows the local conditions must be available, as the
contact person, for the authorized AHT experts.
•Dispose of units with flammable refrigerant and units with insulating foam (thermal insulation polyurethane
foam with pentane) appropriately. Inquire with the responsible authorities about the safety and statutory
disposal regulations applicable to you.
The product was designed to take into account the environmental and disposal friendliness of AHT units. The
refrigerant R-290 and the propellant pentane (for the insulating foam) do not have any ozone depletion potential
and do not contribute directly to the greenhouse effect.
Mechanical hazards
WARNING
•Transport the unit with forklift trucks. Risk of injury to persons during collisions.
►Observe the transport routes for forklift trucks.
►Secure the cargo.
►Forklift trucks must only be operated by trained persons.
•
Danger of tilting of the unit. Persons can be pinched (see →chapter 7).
►Do not climb onto or into the unit.
•
Disposal of packaging material and films. Danger of suffocation.
►Keep packaging material and foils away from children.
►Do not let children play with them.
•
Missing and/or not fully functional safety devices. Danger of injury due to e.g. rotating parts.
►Check the safety devices for completeness and functionality.
►Guards and covers on the unit must not be removed.
CAUTION
•
Cutting injuries in the case of material breakage. Danger of falling.
►Do not climb onto or into the unit.
•
Falling objects. Impact injury. Cutting injury in the case of glass breakage.
►Do not place objects on the unit
•
Leakage of defrosted water. Slipping hazard.
►Check for puddle formation in front of and below the unit.
►Remove spilled defrosted water immediately.
•
Opening/Closing the glass lids. Hands (body parts) can be pinched.
►During opening/closing do not grip the gaps.
►When opening/closing pay attention to other people.

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Safety by handling of glass
CAUTION
•Glass breakage hazard. Cutting injuries to the body. Impact injury.
►Do not install units with multi-pane insulating glass at altitudes above 2000 m (6562 ft).
Multipane insulating glass can break due to air pressure differences.
►Do not apply a load onto the glass lids.
►Check for damage (crack, fissure, breakage) of the glass lids/glass elements. In the event
of damage, contact the maintenance service immediately (see →chapter 10.4).
►Do not climb onto or into the unit.
►It is prohibited to store glass containers when operating below 0°C (32°F).
►Check breakage of glass containers when operating above 0°C (32°F).
•
Disposal of broken glass. Cutting injuries to hands.
►Wear protective gloves to remove splintered glass parts and the possibly damaged goods.
►Remove all splintered glass parts and damaged goods carefully and completely.
Dispose of splintered glass parts in an environmentally friendly manner.
Residual risks
The manufacturer assumes no liability for any damage caused by failure to observe these instructions.

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2 Product description
General information
In the product design, the manufacturer has
considered the environmental and disposal-
friendliness of the device, in particular, for the
refrigerant propane (R-290) and the propellant
pentane (for the insulating foam). Propane does not
have any ozone depletion potential (ODP) and only a
very low Global Warming Potential (GWP) of 3.
Technical data
Important technical data can be found on the serial
plate (see →chapter 2.2.1).
External
dimension
Maximum tota
weight unit
See → Model-Types
overview
Airborne noise
emissions
Emission sound pressure
level < 70 dB(A)
Application/Operating mode
Setting
Customer specific
A1
Customer specific
A2
Refrigerator
A3
Freezer
A4
Ice cream freezer
A5
Technical interfaces
Power supply
AC 110-120V / 1PH/ 60 Hz
Connector types
NEMA L5-15
NEMA 5-15
Power cord or IEC-box with plugged-in cables (see
→chapter 7.1)
Unit –
connection cables
Labeling flag with
snowflake
Light-
connection cables
Labeling flag with
lamp
combined Unit/Light-
connection cables
No labeling flag
Minimum requirement for power cords
Minimum cross-section
18AWG
cabling
3-pin cable
Electrical protection (see →chapter 7.2)
Fuses
Rated
current
[A]
Triggering
characteri
stics
Type
Fault
current
[mA]
for
110-120V
CB 15
C
(time-lag)
_ _
GFCI ≥40 _
Surge current
strength,
short-time
delayed
(e.g. G/AP-R)
30
RCBO
15
C
(time-lag)
Surge current
strength,
short-time
delayed
(e.g. G/AP-R)
30
Customized deviations possible.
Further information: Maintenance services (see →
chapter 10.4).
Serial plate and serial number
When handling the unit, the information on the serial
plate must be observed. The serial plate is located on
the back side of the unit and contains important
technical data:
Model,
Serial number (see →chapter 10.4),
Recommended operating ambient
temperature* (see →chapter 1.3),
Nominal voltage /frequency,
Nominal consumption
Nominal current,
Refrigerant and quantity,
Date of production,
Certification marks,
Further technical data
*These units are designed to meet ANSI/ NSF®
Standard #7 requirements in air conditioned stores,
where temperature is maintained at or below the
specified levels and relative humidity is maintained at or
below 55%. Proper installation is required to maintain
certification.
Levels specified at
serial plate
Recommended operating
ambient temperature
Type I (75°F/24°C)
Between 16°C (61°F) and
24°C (75°F)
Type II (80°F/27°C)
Between 16°C (61°F) and
27°C (80°F)
Intended purpose
For storing, displaying or dispensing of pre-packed ice
cream, pre-packed frozen or medium temperature
foods depending on setting (setting see →chapter 2.2).
Further information see →chapter 1.3
3 Layout and function
The equipment is a self contained plug-in unit.
All individual units are delivered ready for operation
and have their own control unit.
All units are delivered with a customer specific factory
setting. Each unit contains one or more hermetically
sealed refrigerant circuits, the components of which
are technically connected to each other permanently.
The units can operate in 5 different operating modes
(see →chapter 4.2.1.2):
Two settings „Customer specific“,
Refrigerator,
Freezer or
Ice cream freezer.
The waste heat generated in the unit is discharged to
the ambient air via an air condenser.
The unit is defrosting automatically to keep the inner
tank free of frost and ice. The unit works properly
even when the frost/ice accumulates on the surface
of the inner tank. Automatic defrost and the button
[MAN. DEFROST] for semi-automatic defrost are set
inactive in freezer mode.