Hussmann SGN141S-1 Instruction Manual

SGN141S-1 R290 Self-Contained Low Height Open Refrigerated Display Cabinet Manual
July2021 Final Rev: 30A01 1
Reference: IM-1007P_SGN141S-1
The following models are covered by this Manual
SGN141S-1
66 Glendenning Road, Glendenning NSW 2761
PO Box 42 Doonside NSW 2767
t: [phone] f: [phone]
SGN141S-1 Self Contained R290 Low Height Open Medium
Temperature Refrigerated Display Cabinet
Installation & Maintenance Manual
Please read carefully and retain for future use

SGN141S-1 R290 Self-Contained Low Height Open Refrigerated Display Cabinet Manual
July2021 Final Rev: 30A01 2
CONTENTS
Pre-Installation / For Your Safety ____________ 3
Servicing, Maintenance and Refrigerant Handling _ 4 - 5
Receiving Cabinets __________________________ 5
Moving Cabinets into position _________________ 6
Cabinet Cross-section & Footprint 7
Technical Data Sheet 8
Operating Environment 9
Installed Position 9
Key Operation Points 10
Installation _____________________________
Electrical installation 11-12
Cabinet Operation / Start-up 12
Cabinet Operation _____________________________
Load Limits 12
Fittings and Accessories 12
Temperature adjustment 13
Maintenance _____________________________
Cleaning 13 - 14
Regular Inspection 15 – 21
Trouble Shooting 21 – 23
Risk Analysis 24 – 25
Start-up Checklist 25 - 26
End-of-Life decommissioning of the Cabinet 27
Appendices A/. Wiring Diagram 28

SGN141S-1 R290 Self-Contained Low Height Open Refrigerated Display Cabinet Manual
July2021 Final Rev: 30A01 3
Pre-Installation
Cauon !! Read the content of this manual before installaon and use of the equipment
Consider this Installaon & Maintenance Manual as integral part of the equipment.
Ensure that the Manual is available to the personnel who will be using the cabinet and/or carrying
out any maintenance operaon(s) on it.
In case of resale ensure that the Manual is passed on to the subsequent owners.
Keep the Manual in good condions for the whole life of the equipment, and ensure its content
remains undamaged. In case of loss or damage to the manual, ask for a replacement copy.
Installaon shall be in areas with a volume greater than 15m3 per SGN141S-1 cabinet, and a oor
area greater than 6.8m2.
FOR YOUR SAFETY
Cabinet utilises flammable refrigerant R290 (Propane) with a 142-gram charge quantity. Idened
by specic labels. The Type of refrigerant (R290) is also specied in the serial/rang plate.
End-users and service personnel are required to fully understand and observe the following
instructions.
Each and every operator, as well as the maintenance personnel, must carefully read und fully
understand or have these instrucons explained before using this equipment.
Warning!! This appliance is not intended to be used by persons (including children) with reduced
physical, sensory or mental capabilies, or lack of experience and knowledge, unless they have
been given supervision or instruction concerning use of the appliance by a person responsible for
their safety. Children shall not play with the appliance.
Warning!! Do not damage the refrigerant circuit.
Warning!! Do not keep explosive substances such as aerosol cans with a ammable propellant
inside the equipment.
Warning!! Do not use mechanical devices or other means to speed up the defrost process unless
those (if any) expressly permied by the manufacturer.
Warning!! Do not use electric appliances inside the cabinet’s display area unless those (if any)
expressly permied by the manufacturer.
Warning!! Keep clear of obstrucon all venlaon openings in the appliance enclosure.
Do not exceed the load limits of display decks and shelves.
Warning!! If the power supply cord or the power plug is damaged, it must be replaced by the
manufacturer, their service agent or a suitably qualified persons in order to avoid any hazard.

SGN141S-1 R290 Self-Contained Low Height Open Refrigerated Display Cabinet Manual
July2021 Final Rev: 30A01 4
SERVICING, MAINTENANCE AND REFRIGERANT HANDLING
1. R290 is classified as flammable refrigerant of Class A3 according to ANSI/ASHRAE. It is a
highly flammable and very easy to ignite. It can burn with explosive impacts.
2. R290 in contact with air can cause a risk of fire or explosion in presence of open flames or
sparks generated by electrical equipment.
3. R290 (Propane) has no odour. Take extra cautions if a leak is suspected i.e. quarantine the
cabinet and call for a qualified refrigeration service technician to attend.
4. Servicing can be only performed by qualified personnel holding a valid certificate and
competence to work on and break into a R290 refrigeration circuit safely.
5. Service intervention must be carried out considering the mentioned above risk: do not use
electric tools and open flames.
6. Components which require substitution: - only use original spare parts for they have been
specifically approved for use with R290 (Propane) refrigerant.
7. The refrigerant circuit is hermetically sealed (closed loop) therefore refrigerant filling,
draining or substitution of some components is not possible without breaking the vacuum.
In such a case:
i. the substitution cannot be performed indoors at the customer’s premises.
ii. the cabinet should be moved to a controlled workshop environment
suitable for the type of repair where work can be conducted safely.
iii. In any case, work in confined spaces must be avoided. Work area can be in
the open or, alternatively, must be properly ventilated. Ventilation should be
able to safely disperse any released refrigerant and expel it safely externally
to the atmosphere.
8. While working on cabinet with R290 during which the refrigerant can be possibly released
to the surrounding space, all possible ignition sources, including cigaree smoking, must be
at least 10 metres away from the place of installaon, maintenance or disposal.
9. In case hot work is required (welding, brazing) best practice must always be applied. This
should require the following procedure to avoid risk of fire or explosion.
i. remove refrigerant safely
ii. purge the circuit (with inert gas)
iii. evacuate
iv. purge again with inert gas
v. open the circuit by cutting (or brazing)
vi. Operator must be properly skilled and authorized to perform hot works on
systems working with flammable refrigerants.
10. In order to reduce flammability hazards the installation of this appliance must
only be carried out by a suitably qualied person.
11. Always use appropriate Personal Protection (PPE) i.e. gloves, safety glasses, boots or shoes,
long pants, long-sleeve shirt, etc.

SGN141S-1 R290 Self-Contained Low Height Open Refrigerated Display Cabinet Manual
July2021 Final Rev: 30A01 5
Receiving Cabinets
Cabinets will always be dispatched in good condition. Always inspect the cabinet and packaged
accessories for damage. Note any damage on the carrier’s consignment note prior to signing.
For concealed damage that is found later, notify Hussmann in the relevant country within 3
working days. Any issues will be addressed and rectified as applicable.
Australia: Hussmann Australia Pty Ltd
Email: [email protected]
Phone: [phone]
New Zealand: McAlpine Hussmann Ltd
Email: [email protected]
Phone: [phone]
Prior to installation Cabinets must be stored protected from the weather and at temperatures
and humidity’s within 0°C ~ +45°CDB / 30% ~ 80%RH.
12. Take extra caution with Anti-static protection when undertaking any electrical and/or
controller work.
NOTE: - Please provide a photographic record of any damage found along
with the cabinet serial number and a brief description of the damage.
A check should also be made to ensure that all loose parts listed on the outside packaging are
present and undamaged.
NOTE: - Any shortages will follow the same procedure as concealed damage.

SGN141S-1 R290 Self-Contained Low Height Open Refrigerated Display Cabinet Manual
July2021 Final Rev: 30A01 6
Equipment Required:
1 x Suitably sized Pallet Truck or Fork hoist.
NOTE: - the SGN141S-1 cabinet is fitted with castors for final positioning, please take care as
wheels can be difficult to steer and/or may run freely on slight gradients. This is a minimum 2-
person task.
Once cabinets have been moved into the store with the shipping pallets** sll aached, the
following methods should be used to move cabinets to their nal installed posion:
1. Carefully lift the cabinet off the pallet with a fork hoist or pallet truck, taking care to
position the forks in the centre of the cabinet and directly under the skid rails. Test for
stability / centre-of-gravity balance before making final movements.
2. Ensure the mounting feet bolts are screwed-up, such that the wheels can be utilised
when cabinet is lowered to the floor. Gently lower the cabinet on to the shop floor.
3. Ensure the floor where the cabinet is to be manoeuvred, is swept and free from debris,
as this could otherwise result in a roller wheel coming to an abrupt stop and destabilise
the cabinet.
4. Once cabinet is in the required position, screw all four (4) feet bolts down into position
evenly such that all four (4) feet bolts take the full load of the cabinet and the roller
wheels have between 5mm ~ 10mm free space from the floor.
5. Ensure the cabinet is securely positioned and levelled via a spirit / laser / or theodolite
level.
6. These Cabinets draw store ambient air in through the Condenser coil located at the
bottom of the cabinet. Do not block either air entry or exit areas of the cabinet. NOTE: -
the top air exit should have at least a 1.0m clear area and height above the cabinet to
allow correct airflow and dissipation.
7. If the cabinet has been tilted during positioning/installation, wait at least three (3)
hours before starting in order to allow any potential oil displacement to settle.
Moving Cabinets to Installed Position
To ensure any risk of damage to cabinets while moving to their installed
locaon is minimised, it is strongly recommended that the following
instrucons are followed.
**Timber (pallet only) and plywood (box only)
used for shipping materials and they are heat
treated (pallet only) and can be recycled

SGN141S-1 R290 Self-Contained Low Height Open Refrigerated Display Cabinet Manual
July2021 Final Rev: 30A01 7
Cross Sections, Footprints, Load Limits and Data Sheets
SGN141S-1 Medium Temperature Self Contained R290 Low Height Open Refrigerated Display
Cabinet

SGN141S-1 R290 Self-Contained Low Height Open Refrigerated Display Cabinet Manual
July2021 Final Rev: 30A01 8
(1) Tests for cabinet fitted with night cover are as per AS1731. Test is with night cover (blind) discarded
(up) and lights on for entire 24-hour test. 2nd Test is with night cover (blind) applied (down) for 12 hours
while lights are turned off and 12 hours night blinds up and lights on within the 24-hour test.
(2) Appropriate adjustments to the refrigeration setting parameters may be required to suit actual store
conditions if they vary from Climate Class 3.
SGN141S-1 DRINK CHILLER CASE
Refrigeration Settings [AS1731 per Climate Class 3 (+25°C/60%RH)]
Basic
Case temperature control options
Product Temperature Class
3M1
(2) Cabinet control regulation is per
evaporator coil inlet mounted sensor.
Cut-Out / Cut-In (regulation band), °C 0.0 / +6.0
Refrigerant/ Expansion device
R290/Capillary
Defrost –#/day x minutes (failsafe)
8 x 25
Superheat, K
~ 5
Refrigeration Rating (Φ24-def per AS1731, Test 1, Climate Class 3)
Cabinet model (size, mm length overall incl.
ends at 40mm each)
SGN141S-1 (650)
Φ24-def –single cabinet system, Watts
(For condensing unit selection purpose)
781
R290 Refrigerant Charge, grams
142
Electrical Data (220V AC 50Hz)
Evap. Fan
Qty x Wattage –Case air flow
1 x 25
Total Fan Load, Amps
0.12
Lights
LED
Qty x Wattage - Canopy
1 x 7
Qty x Wattage - Shelves
2 x 5
Total amps (LED Adapter) max.
0.09
Unit
Condensing unit (Model)
Embraco EMX6210U
Rated Load, Amp
2.4
Heater
Wattage –Pan heater
Nil (passive)
Total Heaters, amps
-
Cabinet
Total load, amps.
2.6
Cabinet Energy Consumption & Efficiency Data (AS1731, Product Class 3M1)
Test (1)
Case Size
Cabinet
Type
DEC
kWh/d
REC
kWh/d
TEC
kWh/d
TDA, m2
TEC/TDA kWh/d/m2
1st Test
SGN141S-1
IVC1
7.680
N/A
7.680
0.553
13.886
GEMS EEI registered values (AS1731, Product class 3M1)
MEPS Reg.
No.
Case Size
Cabinet
Type
DEC
kWh/d
REC
kWh/d
TEC
kWh/d
TDA, m2
TEC/TDA kWh/d/m2
ARC0709
SGN141S-1
IVC1
7.680
N/A
7.680
0.553
13.886
Class 3M1

SGN141S-1 R290 Self-Contained Low Height Open Refrigerated Display Cabinet Manual
July2021 Final Rev: 30A01 9
Installed Position
The Cabinet(s) should be sited so that external influences are minimized. Situations to avoid are:
Air draughts from:
•Air conditioning,
•Ventilation,
•Heating outlets,
•Entranceways,
Heat sources:
•Sunlight,
•Spotlights,
•Hot cabinets
•Concentrated external lighting,
•Non-insulated roofs and walls,
Mechanical damage:
•Shopping trolleys,
•Forklift trucks,
•Pallet jacks,
•Floor polishers,
CAUTION: -
Any of the above situations could prevent the cabinet(s) from
performing correctly.
Extra consideration may be required to minimize the risk of damage.
Operating Environment
This Medium Temperature Self Contained R290 Low Height Open Refrigerated Display Cabinet has been
designed to operate in the following conditions:
Class 3M1 :-
Ambient temperature
Relative humidity
Max. cross draft
Product Temperature
+25°CDB
60%
0.2 m/sec
-1.0°C to +5.0°C
Ambient conditions greater than those stated may result in poorer performance of the cabinet
and higher running costs.

SGN141S-1 R290 Self-Contained Low Height Open Refrigerated Display Cabinet Manual
July2021 Final Rev: 30A01 10
Refrigerated Cabinet Key Operation Points
•Do not overload the cabinet with product. Merchandised Product layer should be within the
shelf and base and loaded to a height within 25mm ~50mm of the next shelf or top panel
above for best performance.
•Do not block air delivery honeycomb or air return grille.
•Do not use mechanical devices or other means to accelerate the defrosting process, other than
those recommended by the manufacturer.
•Do not use electrical appliances inside the food storage compartments of the appliance, unless
they are of the type recommended by the manufacturer.
•Always clean cabinets as described in the cleaning section of this manual.
•During store closed periods it is recommend using the night blind which will achieve a
substantial energy reduction.
•This cabinet appliance cannot be used by children or people who are not properly trained.
•The refrigerant charge is factory set and should not be tampered with. Warranty may be
voided should this occur.
•The cabinet controller is also factory set. Do not make any controller adjustments without
first consulting Hussmann.
NOTE
If a liquid spill should occur, the spill should be cleaned as soon
as practicable. Some liquids can be acetic, and if left will risk
damage to some components in the cabinet.
CAUTION
Do not use electrical appliances inside the food storage compartments
of the appliance, unless they are recommended by the manufacturer.
NOTE
The SGN141S-1 is a self-contained cabinet with a limited water
dissipator tray. When cleaning use minimal water (maximum 1
litres) and carefully observe the water tray in the lower section
of the cabinet to prevent excessive water use/overflow.
CAUTION
Do not use mechanical devices or other means to accelerate
the defrosting process, other than those recommended by the
manufacturer.

SGN141S-1 R290 Self-Contained Low Height Open Refrigerated Display Cabinet Manual
July2021 Final Rev: 30A01 11
NOTE
Cabinets shall be installed level front to back and side to side to allow
correct operation and allow condensate water post-defrost to drain
freely.
NOTE
Information in this manual is to be followed in conjunction with: -
specifications / work practices and requirements of the customer /
installing company and relevant industry Standards and Territorial and
Government Regulations.
Electrical Installation
The electrical installation shall:
•Meet existing regulations and safety codes.
•Have an electrical supply to the cabinet that is independent of other supplies and have its’
own dedicated fixed power supply/socket. Extension cords and multi-plug socket boards
must not be used.
•Be individually isolated.
•An electrical diagram will be attached to the electrical enclosure on every cabinet.
CAUTION
Location of this cabinet should also take into account the
effect it will have on its surrounding environment.
Keep away from storage equipment and products that may
be affected by a rise in ambient temperatures
CAUTION
Do not use electrical appliances inside the food storage
compartments of the appliance, unless they are recommended
by the manufacturer.

SGN141S-1 R290 Self-Contained Low Height Open Refrigerated Display Cabinet Manual
July2021 Final Rev: 30A01 12
Load Limits
Cabinet Operation
To ensure this range of cabinets maintain food products at the correct temperature, the following
information should be followed.
Starting up (by appropriately qualified person)
Check power supply is ready and correct Voltage (230V ~ 240V) and all fans are clear of packaging
and all shelves and panels are correctly ed.
Turn cabinet power on.
Check that all fans and lights are working correctly. Cabinet refrigeraon system will take a few
minutes to commence cooling, observe operaon and ensure cabinet pulls temperature down and
cycles between its cut-out and cut-in temperatures. Cabinet temperature is displayed in the lower
secon via an LED display from the cabinet’s microprocessor controller.
Allow the Cabinet to operate for minimum 3 hours before loading with product.
These cabinets have a load limit that ensures food products stored within these load limits are p
roperly refrigerated. Food products stored outside these load limits may not be properly
refrigerated and disturb the airflow with the result that cabinet performance is compromised, and
food products may be damaged. NOTE: - merchandise should be pre-chilled to below +5°C prior to
placement in the cabinet.
Internal Fittings and Accessories
Only fittings and accessories approved by the manufacturer should be used. Any other additions
the cabinet to not work in its intended fashion.
NOTE: - If you require a replacement electrical diagram, please contact the
Hussmann help desk.
Please supply the cabinet serial number with the request.
WARNING: - Keep the air vents (front and top) clear of any obstructions.
Temperature Adjustment
The SGN141S-1 Refrigerated Cabinets are Factory set and should not require any adjustment.
Should for any reason an adjustment be deemed required, only appropriately qualied and trained
Service Technicians should undertake this work and should contact Hussmann prior to any changes
being considered.
MAINTENANCE

SGN141S-1 R290 Self-Contained Low Height Open Refrigerated Display Cabinet Manual
July2021 Final Rev: 30A01 13
Cleaning
To maximize efficiency and durability, it is suggested that your effect an appropriate cleaning and
maintenance program.
Wear appropriate PPE when cleaning or maintaining cabinet to prevent scratches or splashes (i.e.
gloves, safety glasses, etc.).
Galvanized steel (painted) is used inside the cabinet and it is not rustproof, particularly in the
harsh environment of Food Display cabinets. Chlorine and bromine, commonly used for
sanitisation are highly caustic chemicals for stainless steel, in heat and humidity, the corrosiveness
of these chemicals is enhanced.
Regular cleaning is the best way to prevent corrosion and add to the service life for your stainless-
steel product. The goal of your cleaning and maintenance program should be to keep the stainless
steel's protective chromium oxide layer intact. This is what prevents corrosion.
For internal cleaning use:
•
Warm water (Less than 55°C)
• Water based cleaning solutions
• Soft cloths
Do not use:
•Abrasive products
•Solvent based products
•Steam or high-pressure water systems
When cleaning:
• Check drain trap is clear of obstrucons.
• Do not ood the base of the cabinet or well area as water may overow the small volume
water tray in the boom secon of the cabinet onto the oor creang a slipping hazard.
The SGN141-S is a self-contained cabinet with a limited water dissipator tray, when
cleaning use minimal water (maximum 1 litres) and carefully observe the water tray in
the lower section of the cabinet to prevent excessive water use/overflow.
Cleaning Acrylic/Perspex (front display)
Clean with a non-abrasive soap (or detergent) and luke-warm water, using a so grit free cloth,
sponge or chamois.
Wipe the Acrylic/Perspex dry with a clean damp chamois or clean so cloth such as a coon annel.
Do not use hard, rough cloths or paper towels, as they will scratch the acrylic
Waxing Acrylic/Perspex (front display)
Once the Acrylic/Perspex is clean, minor scratches can be removed using a good grade commercial
wax. The wax should be applied in a thin coat and brought to a high polish by rubbing lightly with a
dry clean so cloth, such as a coon annel. Do not rub excessively as this may build up a charge
that will aract dust to the surface. Blong with a clean damp cloth is recommended to remove
charge.
Cleaning Glass Surfaces (ends)
•Use Domestic glass cleaning fluid, Ammonia based glass cleaner may be used.

SGN141S-1 R290 Self-Contained Low Height Open Refrigerated Display Cabinet Manual
July2021 Final Rev: 30A01 14
•Spray fluid onto a cloth then wipe the glass in a circular motion.
Painted Surfaces
•Use a soft cloth.
•Do not use solvent based cleaning products.
•Always rinse internal surfaces with warm water and allow to dry before re-starting the
refrigeration system.
Evaporator Coil
•Never use sharp objects around evaporator coils to de-ice them.
•If the coil has solid ice formed. This indicates the refrigeration and/or defrost cycle are not
set correctly. Contact your refrigeration service provider to investigate.
•Use warm water to de-ice coil if required, but not so much as to flood the well/condensate
tray in the lower section of the cabinet.
•Use a soft brush or vacuum brush to clean coil. Use PPE (gloves, safety glasses, etc.)
•Do not bend fins.
Condenser Coil
•Never use sharp objects around condenser coil.
•Clean the condenser coil with a soft brush or a vacuum cleaner. The dust and fluff obstruct
good air circulation and reduces cabinet performance and increases energy consumption. To
reach the condenser coil, remove the protection grille, clean it very carefully (avoid touching
other components) and put the grill back in its place.
•Use PPE (gloves, safety glasses, etc.).
•Do not bend fins.
WARNING: - Always isolate cabinet from the mains power supply before deep
cleaning.
WARNING: - Keep water away from electrical components.

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July2021 Final Rev: 30A01 15
Regular Inspection
To ensure reliability of the cabinet and leak ghtness of the refrigerant circuit, it is advisable that
trained personnel carry out periodic maintenance.
Case should be cleaned and inspected by store sta on a daily basis.
•If an alarm system is not part of the refrigeraon installaon, the temperature of each case
should be checked on a daily basis.
•The case discharge air temperature should be within the following ranges of -4°C ~ +1°C,
unless on defrost.
oIf it is consistently outside the above temperature ranges, contact your service
provider.
•Visually check the case for damage or spills and take appropriate remedial acon.
Cleaning
•Do not use hot water on cold glass surfaces as the glass may shatter and cause serious
injury.
•When flushing the waste drain, do not use high-pressure water hoses and be careful not
to introduce water faster than the waste outlet/drain can drain it. This SGN141S-1 cabinet
does not have a floor drain. Do not bucket more than 1 litres into the case during cleaning.
CAUTION: - Do not climb in or on the cabinet as
this may result in personal injury and/or case
damage.
1. Remove stock from the case and store below +5°C.
2. Turn o power to the case (electrical).
3. Remove all price tickets and any foreign materials from the case. Particularly the air return
grille / base liner / and defrost tray.
4. Remove shelves and clean with a sponge, warm water and mild detergent, then rinse and
wipe dry.
5. Remove the base trays, wash with mild soapy water and rinse.
6. Carefully flush the waste drain with a small amount of water (less than 2 litres) and allow
the base to drain. NOTE: - monitor the condensate tray levels in the lower section of the
cabinet.
7. Clean the drain area with a so brush and warm water.
8. Clean the inside of the case (paying parcular aenon to the perforaons in the rear
panels) with a clean so cloth, warm water and mild detergent.
9. Clean glass or mirrored surfaces with a clean soft cloth and mild glass cleaner.
10. Wipe LED lamps with a dry cloth (ensure lights are powered off).

SGN141S-1 R290 Self-Contained Low Height Open Refrigerated Display Cabinet Manual
July2021 Final Rev: 30A01 16
11. Clean bumpers and any plasc parts with a so cloth and mild detergent, then wipe dry with
a clean cloth.
Replace base trays and shelves and turn on power.
13. Allow the case to attain correct working temperature (approx. 30 minutes) and restock the
shelves.
NOTE: Aer cleaning, make sure to clean the area around the case to prevent slips and falls
Monthly
A thorough condenser air lter check, and clean if dirty, should be carried out monthly by store
personnel. If condenser air lter is dirty, then the following procedures should be undertaken as a
minimum:-
1. The front lower panel holding the condenser air filter is held in position magnetically, it is
easy to remove by pulling this panel forward. Refer to photo sequence inserted further
below. NOTE:- no tools are required to remove or replace the condenser air filter panel or
filter.
2. Use appropriate PPE.
3. Make area safe, ideally this task should be undertaken when the store is closed to
customers and undergoing cleaning and/or re-stocking.
4. Remove condenser air filter panel.
5. Remove condenser air filter media/mesh.
6. Take to the back-of-house or an area where filter media/mesh can be undertaken
appropriately.
7. If available use a vacuum cleaner with a soft brush and thoroughly clean the filter.
8. If no vacuum cleaner, then washing in warm water is recommended. Ensure the filter is at
least shaken dry (i.e. no water drips).
9. Return now clean filter to the cabinet and replace in reverse order. Ensure filter
media/mesh is correctly positioned and that the filter panel is re-fitted in its correct
position.
10. Photo sequence of above steps in task order follows:-
a.
Front Panel
removal

SGN141S-1 R290 Self-Contained Low Height Open Refrigerated Display Cabinet Manual
July2021 Final Rev: 30A01 17
b.
c.
Condenser
Filter
Media/Mesh
Condenser Filter
Media/Mesh
(removed and fully
cleaned)

SGN141S-1 R290 Self-Contained Low Height Open Refrigerated Display Cabinet Manual
July2021 Final Rev: 30A01 18
d.
e.
Cleaned condenser
lter media/mesh
placed back into
the condenser air
lter panel
Fix front panel on
its locaon back
aer cleaning is
done

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July2021 Final Rev: 30A01 19
Six-monthly
A thorough cleaning of the Condenser Air Filter and Condenser Coil, and maintenance check should
be carried out on a six-monthly basis by a qualied and approved refrigeraon engineer. The
following procedures should be undertaken as a minimum:-
Cleaning (Six-monthly)
1. Clean the condenser coil air filter by careful washing. If necessary, also clean the condenser
coil itself with a soft brush or a vacuum cleaner. Dust and fluff obstruct good air circulation
and reduces cabinet performance and increases energy consumption. To reach the
condenser air filter and condenser coil, remove the front grill panel, remove the air filter,
and clean carefully (avoid touching other components). Put the air filter and front grill panel
back in place.
2. Ensure the air filter once cleaned is replaced in the same position (adjacent to the air-on
face of the condenser fin coil): -
Inspection
1. Check that all case panels and trims are secure and undamaged
2. Check for rust and paint damage
3. Ensure all cable connecons, including screw terminals, earth leads, and straps are secure.
4. Ensure insulaon to all electrical components including:- fans, heaters, controls, earth
terminals and lights are sound.
5. Carry out electrical safety tests, including earth connuity and insulaon resistance as
appropriate.
6. Check the defrost water dissipater tray sponge wicking pads are clean and in good condion
(replace if signs of wear/deterioraon).
7. Ensure that there are no refrigerant leaks.
8. Check that all fans, lights, and controls are working.
Open front panel
to access
condenser coil air
lter
Front panel closed