Nutall Flexeserve Hub 600 User manual

OPERATION MANUAL
FLEXESERVE HUB®
FLEXESERVE® | Operation Manual Flexeserve Hub® North Ameri a | V1 MAR 2021 | 40003230 Page | 3 of 22
Contents
Introduction 4
Safety Symbols 5
Safety Instructions
Specifications 7
Overall Dimensions 8-9
Installation 10
Positioning 11
Moving 11
Electrical Connection 12
Equipment Configuration 13
Power ON/OFF 14
Switching On 15
Switching Off 1
Operation 17
Display and Merchandising 18
Product Probing 18
Daily Cleaning 19
Troubleshooting 22
Spare Parts and Service 23
Contact Us 23

OPERATION MANUAL
FLEXESERVE HUB®
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Introduction
This manual has been developed as a guide to assist with the continued safe operation of the equipment.
The document covers many aspects of use and maintenance; the relevant level of training and
competence is required from the operators working with the equipment.
The Alan Nuttall Partnership Ltd cannot be held responsible for any accidents or injuries caused by
instructions being carried out incorrectly or by the way the information is depicted. The manual must be
read and understood before using the equipment.
This manual has been composed with the utmost care. However, as the result of a constant commitment
to development and improvement, it may be the case that your equipment deviates in detail from what
is described in this manual.
The following instructions are only intended as guidelines for the installation, operation and maintenance
of the equipment. Furthermore, The Alan Nuttall Partnership Ltd accept no liability whatsoever for loss
or injury caused by the failure to strictly adhere to the safety guidelines and instructions in this manual,
whether due to carelessness, lack of the relevant training, qualification or competence, and during
installation, operation, maintenance or repair of the equipment.
This manual should be retained for future use.
© 2021 The Alan Nuttall Partnership Ltd
Do not copy without written permission from The Alan Nuttall Partnership Ltd. All contents of this document
remain the intellectual property of The Alan Nuttall Partnership Ltd.

OPERATION MANUAL
FLEXESERVE HUB®
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Safety Symbols
The symbols defined below, which are relied upon for safety, are used on Flexeserve Hub® and/or
throughout this document.
WARNIN /CAUTION
An appropriate safety instruction should be followed or caution to a potential hazard
exists.
DAN EROUS VOLTA E
To indicate hazards arising from dangerous voltages.
HEAVY
This product is heavy and reference should be made to the safety instructions for
provisions of lifting and moving.
HOT SURFACE
To indicate that the marked item can be hot and should not be touched without taking
care.
INFORMATION
Information provided for trained and skilled operators only.
MAINTENANCE
Maintenance of the equipment must only be undertaken by fully trained, qualified and
competent engineers.
PROTECTIVE EARTH ( ROUND)
To identify any terminal that is intended for connection to an external conductor for
protection against electric shock in case of a fault, or the terminal of a protective earth
(ground) electrode.
WASTE OF ELECTRICAL AND ELECTRONIC EQUIPMENT
When the end user wishes to discard this product, it must be sent to separate
collection facilities for recovery and recycling.

OPERATION MANUAL
FLEXESERVE HUB®
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Safety Instructions
•This equipment may only be used by trained and skilled personnel. Any application that does not
conform to the specified use is considered hazardous.
•The equipment must only be used for its intended purpose; any other application will be
considered improper. Flexeserve Hub® is designed to hot-hold food that has been cooked prior to
display only. The equipment is not for cooking.
•Heated areas of Flexeserve Hub® exceed 158°F (70°C): only touch the components used to control
the equipment.
•Food products are to be pre-cooked to the appropriate temperature and displayed in suitable
containers/packaging.
•Do NOT place anything heavier than 44Ibs (20kg) on to the display shelves.
•Do NOT operate the equipment without the fan cover plate fitted.
•Do NOT place anything on the fan cover plate.
•Do NOT cover or block exhaust vents or fan plates.
•When the equipment is installed, ensure that the stability legs are fully down to the floor.
•Children should not be allowed to play with or be near the equipment.
•Before using the equipment:
−Inspect the power cable for damage. If damaged, disconnect and isolate Flexeserve Hub®;
−Ensure that there are no foreign or combustible objects other than approved Flexeserve Hub®
accessories or approved food packaging in contact with the heated surfaces;
−Ensure that shelves or display racks are fitted correctly to avoid the risk of injury.
•Switch off the appliance:
−When not in use;
−Before carrying out any maintenance task, such as cleaning;
−Before moving the equipment.
To ensure that the equipment remains in optimum technical condition, maintenance work should be
carried out at least once a year by an approved Flexeserve® Service Provider.
The end user is fully responsible for the fulfilment of locally applicable safety regulations and guidelines
at all times.
Any safety symbols, warnings and/or instructions attached to the equipment are part of the safety
features. They must not be covered or removed, and must be present and legible during the life of the
product. Immediately replace damaged or illegible symbols, pictograms, warnings and instructions.

OPERATION MANUAL
FLEXESERVE HUB®
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Specifications
Flexeserve Hub® detailed within this manual is a series of floor standing heated displays for the
presentation of pre-cooked food products in a suitable container or packaging in commercial outlets.
Flexeserve Hub® floor standing models are provided with adjustable position wire shelves. There is also
the option to provide merchandising trays and pizza cartridges.
Flexeserve Hub® maintains the food products to a fixed temperature of between 149°F ( 5°C) and 194°F
(90°C) by means of an air circulation heater.
NOTE
Each Flexeserve Hub® will be factory set to maintain a minimum of 185°F (85°C) air temperature.
Flexeserve Hub® floor standing models are supplied on castors; the front brake castors can be locked
when the unit is in position.
Flexeserve Hub® is cord connected and supplied with an appropriate cord set, and for indoor use only.
The ambient conditions required to operate the equipment are between 4°F (18°C) to 8 °F (30°C), with
a maximum relative humidity of 70%.

OPERATION MANUAL
FLEXESERVE HUB®
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Overall Dimensions – Model 600
A - Width B - Depth C - Height Weight
22” (559mm) 34” (8 4mm) 73.6” (1871mm) 419Ib (190kg)
B
A
C

OPERATION MANUAL
FLEXESERVE HUB®
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Overall Dimensions – Model 1000
A - Width B - Depth C - Height Weight
38.7” (984mm) 34” (8 4mm) 73.6” (1871mm) 635Ib (288kg)
B
A
C

OPERATION MANUAL
FLEXESERVE HUB®
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Installation
WARNIN
Installation of these units should be carried out by appropriately qualified and skilled
personnel. Failure to do so may invalidate the warranty.
The equipment will be delivered to site boxed on a pallet.
Remove all packaging materials from the unit and dispose of correctly, in accordance with local
regulations.
Care must be taken when removing packaging so not to damage or scratch the painted, glass or stainless-
steel surfaces.
Remove all temporary tape.
Prior to the first use, clean with a proprietary food-safe cleaning solution, following the instructions set
out in the cleaning and maintenance section of this manual. Ensure that an excessive amount of water is
NOT used. Do NOT use aggressive detergents.
If there are any signs of damage, contact Flexeserve® Customer Support immediately. Failure to report
faults, defects or missing items upon delivery may incur charges.
Ensure that safe manual handling practices are employed at all times. Flexeserve Hub® should be placed
into position using the correct procedures, in line with local and regional safety policies.
The following considerations must be given to the site of installation:
•Avoid placing sources of heat near the appliance.
•Do NOT install the appliance near other equipment that generates high temperatures in order to
avoid damage.
•The equipment should be sited so that it is not affected by draughts from doors or air conditioning
systems. Temperature fluctuations are likely to occur if the equipment is not sited appropriately.
This will have an adverse effect on product temperatures and may increase running costs.
•Ensure that the floor supports the weight of the unit at full capacity.
•Ensure that the unit is installed on a flat, even surface.
•A gap of at least 2 inches (50mm) should be left between the back of the equipment and any
wall/solid surface.
The supporting or surrounding surfaces for the appliance must be:
•Non-combustible;
•Level, flat and even;
•Able to support the appliance’s weight at full load, without undergoing deformation or structural
failure;
• Immovable.

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FLEXESERVE HUB®
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Positioning
WARNIN
Installation of these units should be carried out by appropriately qualified and skilled
personnel. Failure to do so may result in unsafe operation or personal injury.
WARNIN
Adequate provision should be made for lifting and positioning the unit to avoid risk of
damage or injury. Sufficient personnel should be available to handle each unit without
contravening company or site health and safety policies.
It is recommended that a minimum of two persons are required for placing the equipment into position.
The equipment must be kept in the vertical orientation at all times.
A gap of at least 2 inches (50mm) should be left between the back of the equipment and any wall/solid
surface.
Once the unit is placed in the desired location, it should be prevented from being moved.
Flexeserve Hub® models have castor brakes fitted that should be applied, and stabilising legs that can
be adjusted in order to prevent the castors from moving. The castor brakes and stabilising legs are located
to the front elevation of the unit, as shown in the illustration below.
Moving
Before moving the unit, isolate and disconnect the power cord from the wall socket. Stow the electrical
power cord so that it does not become damaged during repositioning.
The units are not suited to pass over ledges or obstacles. Make sure that the wheels can move freely and
never come into contact with the power cord (see figure below).
Front counter elevation
showing front brake castors
and stabilising legs
Plug
all socket

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FLEXESERVE HUB®
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Electrical Connection
WARNIN
Connection must only be carried out by suitably trained, qualified and skilled
engineers, in accordance with all regional and local electrical codes.
The appliances are electrically rated for a 208V, 0Hz (2 Wire + Ground) electrical supply.
Flexeserve Hub® products are provided with a dedicated power cord and appropriate NEMA Style power
coupler rated for the equipment.
The equipment must be connected to a dedicated branch circuit protected and grounded supply in
accordance with local electrical codes.
NOTE For electrical ratings of the unit, refer to the electrical rating sticker located within the front top
panel of Flexeserve Hub®. An example is shown below.
It is highly recommended to provide the equipment with an accessible means of isolation external to the
equipment, i.e., a wall isolator switch.
Electrical Ratings
All models are rated for a 208V (2 Wire + Ground) 0Hz supply.
TOTAL POWER
MODEL
00 1500 W
1000 3000 W
WARNIN
For all types of installation, ensure that the power cord is in a safe position. Under no
circumstances should any electrical cables or power points be installed directly in
contact with any part of the unit or pose a risk to safety.
If the mains power lead becomes damaged, isolate the equipment and remove from
service immediately until a replacement is fitted by a suitably trained, qualified and
skilled engineer, in accordance with all regional and local electrical codes.
Electrical rating

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Equipment Configuration
CAUTION
Each wire shelf must be fitted correctly to ensure safe and correct operation.
Slide signage into the ticket strip. Close the door when not in use.
The door must be open in order to open the front top cover and access the control box.
Door
Front cover
ire shelf
Control box
Front brake
castors
Glazed end
panel
Ticket strip

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Power ON/OFF
Each unit is supplied with a power switch to turn the display unit on or off, which is located behind the
front top cover of Flexeserve Hub®. The door must be open in order to open the cover. The controls are
designed to slide out of the unit for access and use.
Set the mains power switch to the ‘I’ position to apply power to the equipment and set to the ‘O’ position
to power off.
600, 1000 Control Panel
WARNIN
In an emergency, switch off the appliance and isolate fully from the mains supply. Ensure
that you take time to familiarise yourself with this location.
Mains isolator
switch

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Switching On
WARNIN
In an emergency, switch off the appliance and isolate fully from the mains supply. Ensure
that you take time to familiarise yourself with this location.
CAUTION
The internal parts will become hot, reaching temperatures above 158°F (70°C).
Each of the model variants are supplied with one set of controls. The controls are located behind the front
cover at the top of the equipment. The door must be open in order to open the cover. The controls are
designed to slide out of the unit for access and use.
Ensure that the equipment is empty and clean prior to switching on. Check that the equipment is
connected to a power socket.
Before switching the equipment on, it is the operator’s responsibility to visually inspect the equipment
to ensure that there is no damage that may compromise safety.
Set the power switch to the ‘ON’ position and the controller will illuminate. The display will show the
current temperature. The equipment will begin to heat and reach the established temperature set-point
automatically, generally 1 7°F (75°C).
The unit should be left empty without interference and may take up to 45 minutes to reach operating
temperature. No products should enter the display area until it has reached the correct operating
temperature.
WARNIN
Do NOT place unpacked food products directly on to the display area.
Power switch
I = On position
Controller display

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Switching Off
CAUTION
When switched off or disconnected from the power source, the internal parts may still
be hot, and may take up to two hours to cool down.
WARNIN
Cleaning and maintenance should only be carried out when the unit has sufficiently
cooled and with the mains supply isolated.
To switch off the unit, set the power switch to ‘OFF’ position.
To fully isolate the unit, disconnect the incoming mains supply by using the mains power switch, or by
disconnecting the power cord from the supply.
Power switch
I = On position
Controller display

OPERATION MANUAL
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Operation
WARNIN
Only if the operator has been trained and is skilled in the operation of the equipment
covered in this guide should this information be followed.
Do NOT attempt to cook products in the equipment.
Do NOT place anything heavier than 44Ibs (20kg) on to the display surface.
The equipment will only maintain the temperature of products that have initially been cooked, prior to
display. Ensure that food is transferred to the display area immediately after cooking in appropriate
containers or packaging.
Ensure that temperatures of the displayed products are checked and recorded on a regular basis, in
accordance with local regulations.
The temperature of the unit is displayed by the controller and is for indication of operating temperature
only. Do NOT use this as a reference to core temperature of foods on display; regular temperature probing
of the product is to be performed. A supplemental temperature gauge is fitted to the back panel.
The minimum and maximum set-point values have been pre-set in the factory to prevent the equipment
holding temperatures from being adjusted beyond legal and safety limits. These can only be adjusted by
a Flexeserve® appointed engineer.
To view the set temperature of the unit, press the ‘temperature’ button for half a second, and then release.
To change the temperature of the unit, press and hold the ‘temperature’ button and press the arrow
buttons to increase (▲) or decrease (▼) the temperature. When the ‘temperature’ button is released, the
new value is stored. After the temperature has been set, the display will revert back to the operating
temperature, which will rise or fall as it reaches the set temperature.
Flexeserve Hub® is manufactured to comply with health and safety regulations, and has been tested and
certified to NSF standards. You must operate the equipment properly using only calibrated temperature
probes to ensure food is thoroughly cooked to the safe standards according to local regulations.
Temperature
adjust Temperature
button

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Display and Merchandising
Different products require varying display times according to their core temperature. These must be
considered to ensure the best quality and safe temperature for consumption is achieved. The Alan Nuttall
Partnership Ltd does not accept responsibility for variances or losses of quality that occur due to product
differences.
All items placed in Flexeserve Hub® should be in the correct packaging/containers, in line with in-store
procedures and best practice. Remove products in damaged packaging from the equipment and clean as
soon as possible.
The door handle must be used at all times when opening and closing the door. Ensure that the door is
fully closed once the products have entered the display area.
Product Probing
INFORMATION
Legal requirements dictate all products displayed for an extended period within any
heated display area should be periodically probed throughout trading to ensure the
core temperature of the product is above the legal holding temperature of the local
authority. Refer to in-house operations manual for product probing instructions.
It is beneficial to enter the product into the holding unit as hot as possible for that particular food product
to maximise shelf-life at the safe temperature.
The equipment is not designed to increase product temperature; the products gradually fall and regulate
in temperature throughout the display period to ensure good product quality. It is critical that the entry
core temperature is as high as possible so the maximum display time is achieved. The product will fall in
temperature during its display time regardless of the entry temperature; therefore, a low entry
temperature will reduce display time.
At the end of recommended display times, any unsold products should be removed, reduced and
disposed of, in accordance with company and food safety standards.
The Alan Nuttall Partnership Ltd does not take responsibility for variances or losses of quality that may
occur due to product differences.
Recording Product Temperatures
The core temperature of the products should be periodically probed and recorded according to local
authority guidelines.

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Daily Cleaning
CAUTION
Isolate the equipment fully before any cleaning is undertaken.
CAUTION
Ensure that the equipment has completely cooled before any cleaning is undertaken.
Only suitably trained personnel should carry out cleaning procedures.
Ensure that the power has been isolated.
Ensure that all display surfaces are allowed to cool to room temperature.
Ensure that water is not allowed to pool or sit in the unit. Sanitize and dry, as required.
WARNIN
If the shelves are damaged, discontinue use.
Do NOT use excessive amounts of water.
Do NOT clean the equipment with high-pressure cleaners, jets of hot water or high-
pressure steam. All traces of food debris should be removed completely.
Do NOT use abrasive cleaning products as these could damage the finish of the
equipment. It is recommended that non-abrasive cleaning products are used. Do NOT
use glass cleaning products.
Wire Shelves
The wire shelves can be removed and cleaned by unhooking from the shelf brackets, as shown below.
Clean with a damp cloth and a mild detergent suitable for stainless steel.
Once the wire shelves are removed, crumbs and debris can be cleaned out of the unit.
Take care not to sweep crumbs into the air outlet at the front of the unit.
Reverse the process to reassemble the wire shelves.
ire shelf Shelf bracket
Unhook wire shelf
from bracket

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Base Tray
Ensure that the unit is empty before cleaning the base tray.
Figure 1 Figure 2 Figure 3 Figure 4
Use the handle to lift out and remove the base tray (Figure 1). Clean using mild detergent and a soft
cloth.
Carefully remove the crumb catcher using the 2 finger holes (Figures 2 & 3). Dispose of crumbs and wipe
over using mild detergent and a soft cloth.
Use a vacuum to remove any crumbs and debris. Wipe over the base fan cover using mild detergent and
a soft cloth.
WARNIN
Avoid allowing debris to enter the fan apertures.
Wipe the back panel using mild detergent and a soft cloth.
Reassemble the base tray and crumb catcher once the above cleaning process is complete.
Door Seals
The inner door seals will need to be removed for cleaning.
Figure 5 Figure 6 Figure 7 Figure 8
Remove the door seal by carefully pulling the seal outwards from the corner (Figure 5) until it is
completely removed from the door.
Clean using warm, soapy water and a soft cloth. Dry using a clean soft cloth or paper tower.