Rieber BKW-KF 2x2/1 Technical manual

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OPERATION INSTRUCTION
Rieber Banquet trolleys cooled/frosted
Order no. 88230401 Model BKW – KF 2x2/1
Order no. 88230402 Model BKW – KF 1x2/1
Order no. 88230403 Model BKW – KF – 1 Super
Location:
Please take care for a surrounding which is neutral in respect to the temperature – no heating
source directly nearby, no direct insolation. Rooms with elevated temperature respectively with
elevated humidity can cause the production of condensation water.
Power Supply:
The banquet trolley can only be connected to 230 V/50 Hz. Alternating current by a shockproof
socket which has been installed in accordance with regulations.
Operation:
Press the green rocker switch. The banquet trolley is ready for use as soon as the switch lights up.
The banquet trolley has got an electronic thermo regulator with digital display of set point and
actual point.
Cooling range: -12°C to +8°C.
The data on the luminous indication are showing the temperature inside the banquet trolley.
Press SET Adjusted temperature is visible
Press SET and Adjusted temperature is getting cooler
Press SET and Adjusted temperature is getting warmer
Defrosting:
The banquet trolley has got an automatical defroster with evaporation of condensation water. But
in spite of this there is still the danger that the evaporator gets covered by ice caused by influences
of the surroundings. We therefore recommend to check it every 2 weeks in respect to icing.
In case of icing, switch off the cooling until the evaporater is ice-free.
Cleaning:
It is advisable to clean the liquefier in the compartment of the cooling machine approximately every
3 months. An ice-free evaporator and clean liquefier facilitates to save engery.
For that the screen at the machine compartment between the wheels has to be screwed off. Free
the tubular system from dust by a vacuum cleaner. Remove fatty residues with cloth respectively
brush.
Current-bearing parts may never get in touch with water.

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Faults: Cooling machine is not running anymore
-possible reasons
-plug is plugged in socket loosely
-safety fuse was released (short circuit)
-temperature selector is put on „room temperature“
Should none of these reasons be applicable, please contact your after-sales service. For your own
safety, do not try to repair the trolley yourself.
Claims:
In case of claims, please indicate unit type and unit number. Repairs may only be carried out the
authorised specialist. Otherwise the warranty becomes void.

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SPARE PART LIST
Banquet trolley cooled/frosted
Description Order no.
Refrigerating machine 32501306
Fan evaporator for BKW 1-piece 32510106
Fan evaporator for BKW 2-piece 32510107
Switch clock for defroster model Bosch Sankyo (old) 33355702
Time switch clock model Suevia (new) 33356106
Motor condenser 33840103
Rocker switch, green 33350207
Electrovalve MLD 6 (hot gas valve) 32300104
Digital thermo regulator for BKW 1-peice, cooled 33060207
Digital thermo regulator for BKW 2-pieces, cooled 33060208
Semiconductor sensing element TF 6 KTY81-121 for electrical temperature control
device 33064503
Transformer 230/12V for electrical temp. Control device 33170101
Contactor ESB 24 –40, 230 V 33841908
Magnet frame 171 592x1328mm 37170165
Bar holder for sliding handle 37130501
Fixed caster ∅200mm, with plate 135x105 32262503
Swivel casters with brake, ∅200 with plate 135x 105 32261503
Swivel casters ∅200mm with plate 135x105 32260504
Helix cable with shock-proof right angle plug 33100309
Interlocking device 32105001
Hook, adjustable 32105002
Shim for hook 32105003
Drip cup evaporator VM 3 (up to 18.1.1996) 32560201
Well condensation water (from 18.1.1996 on) 58239902
PU-bumper strip, L-from (up to 26.4.1998) 40201647
PU-bumper strip L-form (from 27.4.1997 on) 40201662
Stopper for PU-bumper strip 37130807
Control panel for BKW 2x2/1 58235101
Control panel for BKW 1x2/1 58235102

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OPERATIONS INSTRUCTIONS
Banquet trolley, heated
Order no. 88230104 Model BKW 1x2/1
Order no. 88230203 Model BKW 2x2/1
Power Supply:
Rieber Banquet trolleys have got an operation voltage of 230 Volt/50-60 Hz. As regards nominal
voltages the following connected loads are available:
Model BKW 1x2/1 - 2.0 kW
Model BKW 2x 2/1 – 2.7 kW
Operation:
Plug the shock-proof plug of the appliance into the socket, which is designed for it and accordingly
protected, with nominal voltage mentioned above.
Helical feeder is extractable to approx. 2m.
Heating up (dry):
Important: When heating dry, the water which probably is in the deep-drawn well, has to be let off
by the ball cock which is below the bottom. Otherwise unwanted humidity can be produced.
Press the green rocker switch. The banquet trolley is ready for use as soon as the control lamp
light up and then the fan starts. After a short time (5 – 120 seconds according to the state of
charging of the internal buffer accumulator) the digital thermo regulator shows the actual
temperature inside the trolley. If a higher schedule temperature is adjusted, the heating element
will be put into operation until having reached the scheduled temperature, which will then be
regulated thermostatically. During the whole process the actual temperature will be shown on the
display, which also be kept after disconnection from the mains supply due to the internal buffer
accumulator.
Heating up (with humid air):
Important: When heating with humid air, the deep-drawn water well has to be filled with
demineralized water (approx. 1,5 litred), which is done by lateral filling after having lifted the cover
of the water well or during the warm operation also by filling in the surge edge.
Press the green rocker switch. The banquet trolley is ready for use as soon as the control lamp
lights up and then the fan starts. After a short time (5 – 120 seconds according to the state of
charging of the internal buffer accumulator) the digital thermo regulator shows the actual
temperature inside the trolley. If a higher schedule temperature is adjusted, the heating element
will be put into operation until having reached the schedule temperature, will be shown on the
display, which will also kept after disconnection from the mains supply due to the internal buffer
accumulator.
The quantity of moisture will be adjusted by turning the humidity regulator 1-3, which is located
below the green rocker switch.

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Adjusting the scheduled temperature:
At the digital thermo regulator there are two arrow-keys by which the scheduled temperature can
be adjusted. By pressing one of the keys shortly, the actual scheduled temperature will be shown.
If the key will be pressed longer than 4 seconds, the scheduled temperature starts to change.
Depending on the direction of the arrow, the scheduled temperature rises or falls. But with
advancing time the skips become larger. When the key will be let go of, the adjusted temperature
will be adopted and the display shows the actual temperature and the heating starts, as described
above.
Taking out the register sheet (only model BKW 2x2/1) and the recirculating air conduit for cleaning
purposes:
Attention: Before starting, switch off the appliance and pull the mains plug!
Temperature display will also be kept by buffer accumulator!
Caution: Tubular heating element can still be hot!
After the griddles respectively Gastronorm-containers have been taken out, the register sheets can
be lifted up in the front and can be taken out of the indoor by pulling them slantwise upwards.
By detaching the counternut on the top of the right hand side (by socket spanner 11) there is the
possibility to lift the reciculating air conduit a little bit and to remove it to the front.

Liability and guarantee
1
1. Liability and guarantee
Liability and guarantee by the manufacturer are excluded if
•the product is not used properly
Proper use, page 12
•the information and instructions of the operating instructions are not observed
•the product including the accessories is not used correctly
•the product including the accessories is not serviced or improperly serviced
•the product including the accessories is improperly repaired or original spare parts
are not used
•modifications and functional changes are performed without the manufacturer’s
approval
All the wearing parts listed here are excluded from the guarantee:
•Drain cocks
•Foil heating/ heating element
•Caster surface
•Switches
•Spiral cable
•Bumper
•Temperature regulator
•Door seal
•Door handle and catch
All guarantee claims made upon the manufacturer are subject to the “Conditions of Sale
and Delivery Nr. 35” of the company Rieber GmbH & Co. KG.

Symbol explanations
2
2. Symbol explanations
2.1 Symbols in safety information
The different hazard classes are characterised by the signal word and the symbol colour.
WARNING1
Indicates a possible hazardous situation, which could cause serious bodily harm or
death.
WARNING1
Dangerous electrical voltage.
WARNING1
Danger of burning on hot surfaces
CAUTION1)
Indicates a possible hazardous situation, if the safety rules are not observed, could cause
damage to a product or objects in the surroundings.
IMPORTANT
For application information and other useful information.
1) Classification of the signal words in accordance with ANSI Z535.4

Symbol explanations
3
2.2 Symbols in handling instructions
½ Identifies a handling instruction
1. ...5. Handling sequences are numbered
⇒Indicates the result of an action
Indicates a cross-reference
.
Do not place on sloped surfaces.
Only place on flat surfaces.
Apply brakes.
Insert plug into socket (230V ~ / 16 A).
Remove plug from socket and place into socket
on the Banquet Trolley.

Symbol explanations
4
Visual inspection
Do not clean with a steam spray/high-pressure cleaner
Use recommended tool, here:
Allan key, key width 10 mm.
2.3 Abbreviations
GN Gastronorm
Max maximal
if necessary
SW 10

General safety information
1
3 General safety information
3.1 Organisational and personnel issues
What needs to be done? Who does it?
Instruct operator using operating instructions and
on product
Manager of responsible area
Operate product properly and with as few hazards as
possible
Provide connections
Provide protective gloves
Provide cleaning agents
Report faults to service/manufacturer
Keep operating instructions in a place which is known
and easily accessible to the operator
Unload packed product, transport and unpack, ispose
of packaging
Specialist for transport 1)
Commission product Operator ²)
Operate Operator ²)
Move (unload/load)
Heat up
Load/unload
Maintenance
Cleaning Operator 2)
Exchanging door seal
Setting door catch
Casters Only: Service 1) 3)
Electrics (connection, heating, ventilator control
system)
Turning product off Operator 2

General safety information
2
1) According to DIN 31000: A specialist is someone who, “thanks to his specialist training,
expertise, experience and knowledge of the relevant regulations, can assess the tasks
which he has been given and recognise possible dangers.”
2) According to DIN 31000: A trained person is someone who “...is aware or has received
instruction on the tasks he/she has been given and the possible hazards arising from
improper use as well as training about the necessary protective equipment and
protective measures
3) All tasks which may only be performed by Service are not outlined in these operating
instructions.
3.2 Product-specific safety information
WARNING
Danger of injury on hot surfaces.
When loading/unloading
½ Avoid touching the inside fittings
½ Wear protective gloves
Before cleaning
½ Check temperature (<40°C)
½ If necessary, allow Banquet Trolley to cool with doors slightly ajar
and without presenting a danger to third parties.

3
Allgemeine Sicherheitshinweise
3.3 Product identification

Product description
1
4 Product description
4.1 Proper use
Proper use comprises
•the transportation and keeping warm of portioned and covered food plates on grilles
or on shelves/trays 1)
•conditions of use, according to connection
Technical data, page 19
•pulling/pushing on the side handle and on flat surfaces
Condition of floor, see supplied caster documentation
Improper use comprises
•the transportation of other containers than those specified here
•using other liquids than the fully demineralised water in the well
•using unit to heat the surroundings
•using unit to transport persons
4.2 Functions
Keeping food warm
•Stepless regulation of temperature
•Rapid achievement of selected temperature
•Continuous display of the interior temperature even after unit
has been switched off
Preventing food from becoming dry
•Stepless regulation of humidity of inside air
(by evaporation of water)
1) Interior fittings in accordance with GN 2/1

Product description
2
4.3 Models
BKW 2 x 2/1 GN
2 compartments, central panel
The design is described using the model BKW 2 x 2/1 GN
Fig. 4.3-1 BKW 1 x 2/1 GN
1 compartment

Product description
3
4.4 Design
Fig. 4.4-1 Side/front view, doors closed
1 Casters (swivel casters)
2 Brakes
3 Handle (on both sides)
4 Gallery
5 Operating field Fig. 4.4-2
6 Door handle
7 Casters (fixed casters)
8 Outlet of water well Fig. 4.4-3

Product description
4
Fig. 4.4-2 Operating field details
1. Ventilation for control system
2. Temperature display
3. Keys ∆∇for setting temperature
4. Rocker switch I/O with green control lamp
for heating and ventilator on/off
5. Knob for humidity regulation

Product description
5
Fig. 4.4-3 Water well details
1. Water well cover
2. Drain cock for water
3. Water well with outlet as well as heating (covered)

Product description
6
Fig. 4.4-4 View from front, doors opened and folded onto side wall
1. Shelf rails for grilles, shelves or trays
2. Tilt protection
3. Securing screw for circulating air channel
4. Circulating air channel
5. Openings for circulating air ventilator
6. Only for BKW 2x2/1 GN: Register shelves
1) Interior fittings in accordance with GN 2/1

Product description
7
Fig. 4.4-5 Rear view
1. Heating
2. Plug (in transport securing socket on Banquet Trolley)
3. Spiral cable (2m)
4. All round impact protection

Product description
8
4.5 Technical data
Model BKW 1 x 2/1 GN BKW 2 x 2/1 GN
Dimensions
Length x width x height 1) 777×837×1712 1490×837×1712 mm
Floor clearance 235 235 mm
Space needed to open door(s)
fully
1400 2700 mm
Weight
Empty weight 120 200 Kg
Loading 120 300 Kg
Total weight incl. Loading 240 500 Kg
Casing, doors
Stainless steel
IPP 44 2)
Protection class
Door(s) sealed, door closes
automatically
Casters in acc. with DIN 18867, Part 8
Quantity and type 2 fixed casters,
2 swivel casters with stop function (brake)
Equipment Client-specific
supplied documentation for the casters
1) Total height including casters dia. 200 mm
2) Protection against penetration by foreign bodies > 1 mm
Protection against splash-water from all directions