Rühle GR 50 User manual

Lebensmitteltechnik
Translation of the original instructions
- Frozen meat cutter
Type: GR 50
Rühle GmbH, Beim Signauer Schachen 10, 79865 Grafenhausen
Germany
Phone: [phone]; fax: [phone]
www.original-ruehle.de

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Table of contents
1 Safety instructions............................................................................. 3
1.1 Safety instructions ................................................................... 3
1.2 Remaining risk of accidents .................................................. 6
1.3 Intended use ............................................................................... 7
2 Installation instructions.................................................................... 8
2.1 Machine transport and setup ............................................... 8
2.2 Workplace description............................................................. 9
2.3 Connecting the machine .......................................................10
3 Operating instructions ....................................................................11
4 Cleaning instructions.......................................................................12
4.1 Safety instructions .................................................................12
4.2 Cleaning agents and disinfectants....................................13
4.3 Cleaning procedure.................................................................14
5 Service: care, maintenance, repair .............................................15
5.1 Regular care..............................................................................16
5.2 Regular maintenance.............................................................16
5.3 Repairs and spare parts........................................................17
6 Disposal................................................................................................17
7 Technical documentation ..............................................................18
7.1 Technical data..........................................................................18
7.2 Electrical circuit diagram ......................................................18
8 EC Declaration of Conformity according to Directive
2006/42/EC........................................................................................19
Version: 16.03.2022 (Version 2.1)
Subject to change

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1Safety instructions
!!! Observe the safety instructions during the installation, operation,
cleaning and maintenance of the Rühle Frozen meat cutter!
Hazard potentially causing irreversible injuries if disre-
garded.
Warning potentially causing serious injuries if disre-
garded.
Note
Warning of electrical power
Pull the mains plug!
Warning of sharp object. (Risk of cutting)
Warning of non-ionising radiation
Non-ionising radiation is not specifically generated, but is only
emitted by the electrical equipment (e.g. electric motors,
power lines or solenoid coils) for technical reasons. In addition,
the machine has no strong permanent magnets. If a safety dis-
tance (distance field source to implant) of 30 cm is maintained,
the influence on active implants (e.g. cardiac pacemakers, de-
fibrillators) can be excluded with a high degree of probability.
1.1 Safety instructions
!!! A supervisor (responsible person) must be assigned to the machine!
This person must:
a) Completely read and understand these operating instructions
before transport, commissioning, setup, operation, cleaning,
decommissioning, care/maintenance as well as disman-
tling/disposal!
b) Prepare work instructions for intended and safe transport,
commissioning, setup, operation, cleaning, decommissioning,
care/maintenance as well as dismantling/disposal!

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c) Ensure that the qualified workers have completely read and
understood the respective work instructions according to sec-
tion 1.1b!
d) Proper functioning of the protective devices must be checked
at least once a year by a Rühle service engineer!
e) Provide personal protective equipment!
All life cycle phases:
Use foot protection according to EN ISO 20345!
(E.g. recommended for butcher stores, dairies, meat and fish
processing: safety boots S4 with steel cap)
Use hand protection according to EN ISO 388!
(e.g. gloves with high cutting/puncture resistance)
Wear protective clothing according to EN ISO
13688! (E.g. appropriate aprons/coats/overalls)
Cleaning; care/maintenance; dismantling:
Use eye protection according to EN 166!
(E.g. tightly closing safety goggles)
Use light breathing masks according to EN ISO
149!
(E.g. simple breathing mask protection class FFP1)
Use hand protection according to EN ISO 374!
(Acid-resistant, butyl rubber, Viton)
Wear protective clothing according to EN ISO
13688, EN ISO 17491!
(E.g. appropriate coats/overalls)
[The information on the proposed personal protective equip-
ment has only an advisory function. A full risk assessment
should be carried out before using the product to assess
whether the indicated personal protective equipment is
suitable for local conditions. Personal protective equipment
should conform to the relevant EU standards.]
!!! The operator must operate the machine according to the intended
use and strictly observe all points listed in the "Operation" work in-
structions prepared by the supervisor.

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!!! Before putting the machine into operation for the first time and on
each working day, the operator must check the functionality of the
following safety devices:
a) Visual check for changes or damages on all machine sides
and accessible machine parts, e.g. the cut-off knife. The ma-
chine must be shut down in the event of any damage or
changes!
b) Check the safety switches as follows:
Install the upper belt section and the conveyor belt, close the
knife protection box and the conveyor belt hood, swivel the
folding table down and lock with locking pin.
•Start the machine. –Turn the main switch to "0 –Off". –If
the machine does not switched off, it must be shut down
immediately!
•Start the machine. –Press the stop button. –If the machine
does not stop, it must be shut down immediately!
•Start the machine. –Unlock the folding table and swivel it
upward. –If the machine has not switched off, it must be
shut down immediately! –Swivel the folding table down-
ward and lock it. –Machine starts.
•Start the machine. –Open the conveyor belt hood by
20 mm. –If the machine does not switched off, it must be
shut down immediately!
•–Open the conveyor belt hood and knife protection box. –
Dismantle the conveyor belt and upper belt section. Close
the knife protection box and the conveyor belt hood. –
Start the machine. –If it should start, it must be shut down
immediately!
!!! To shut down the machine the stop switch must be pressed, the
main switch turned to "0" - OFF" and the power plug pulled from the
outlet! Secure the machine against further use!

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!!! The supervisor must arrange for the repair of the non-functional
safety device by a Rühle service engineer. Until the corresponding
parts have been repaired, the supervisor must ensure that the ma-
chine or parts of the machine are not put into operation under any cir-
cumstances!
!!! The cleaning personnel must observe the work procedures from the
"Cleaning" work instructions prepared by the supervisor.
!!! The maintenance personnel may only carry out work specified as
"Regular maintenance" unless any other authorisation has been is-
sued in writing by the manufacturer of the machine. The maintenance
personnel must observe the work procedures from the "Maintenance"
work instructions prepared by the supervisor.
Disconnect the power plug for maintenance work!
!!! Do not modify the machine.
!!! Only use Rühle spare parts and accessories.
!!! The operating instructions as well as all other technical documents
included must be supplied completely when reselling the machine.
1.2 Remaining risk of accidents
!!! All life cycles phases
Damaged knife elements must be replaced!
Cut protection gloves must be worn when working:
•on the open knife protection box,
•on the cut-off knife,
•on the vertical knives,
•in the funnel (product feed).
Any manipulation and bypassing of the safety devices is
strictly prohibited!
Reaching into the machine or the funnel during operation
is strictly prohibited!

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If the trough and hood of the infeed are open, do not
reach under the trough, as you may cut yourself on the
cutter bar!
The folding table is equipped with a counterweight to
support the product feed. When the folding table is swiv-
elled downwards, it must be secured with the locking bolt!
If the empty folding table is unlocked and not held, it
swings upwards uncontrolled!
There is a danger of crushing in the area of the lever
mechanism of the folding table, hood and trough of the in-
feed as well as under the trough. Therefore, always hold
the folding table by its handle when filling the trough and
do not reach into the lever mechanism!
Secure the open hood of the conveyor belt against closing
with the existing closure!
Hold the open hood of the conveyor belt firmly before un-
locking it!
The knife protection box may swivel up when it is un-
locked with the hood of the conveyor belt open!
To unlock the folding table, grip the handle by hand from
below and pull the locking bolt with 2 fingers.
!!! Maintenance
Touching electrical components may cause serious inju-
ries or death.
Work on electrical equipment of the machine may only be
carried out by qualified technicians! Always disconnect
machine from the mains during this process!
The protective covers (lids on front and rear) may be re-
moved only while performing maintenance!
1.3 Intended use
The frozen meat cutter may only be used for cutting frozen blocks of
meat, bone material, fish, vegetables or button up to a temperature of

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-40°C. The room temperature must not exceed 12 °C for reasons of
food hygiene!
This machine is intended:
•for use during work
•for use by persons over 18
•for use by instructed persons
Claims of any type for damage caused by use other than
the intended use are excluded!
Misuse:
•Any use other than the use listed above is strictly prohibited
and is considered misuse!
•Operating the machine in explosive atmospheres is prohib-
ited!
•Handling/processing products and materials which are not
foodstuffs is prohibited!
•The folding table must not be used as storage area, step or
seat!
•Meat or bone material with teeth must not be cut!
2Installation instructions
Installation and commissioning of the machine may only be carried
out in the presence of a Rühle service technician or by persons au-
thorised by Rühle.
Rühle GmbH Lebensmitteltechnik accepts no liability for any damage
resulting from failure to comply with these operating instructions.
2.1 Machine transport and setup
Please refer to the short instructions supplied with the machine re-
garding transport and setup of the frozen meat cutter.

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The machine and machine parts must be transported by 2
persons (1 person to operate the floor truck/1 person to
supervise transport).
The power supply line must not be damaged by driving
over or crushing it!
The machine must be shut down until a damaged power
supply line has been repaired!
Ensure that the machine is stable!
Foundation load: 3,0 kN/m²!
Set up the machine on a solid level floor with sufficient
load bearing capacity!
2.2 Workplace description
The work area around the machine, plus a container on the discharge
side, is at least 0.5 m on all sides; for maintenance work it is at least
1 m; if used as a passageway, it is at least 1.2 m.
Swivel range
Folding table
Swivel range
Hood of infeed
Swivel range
Hood of conveyor belt +
knife protection box

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2.3 Connecting the machine
The machine is connected to a three-phase outlet (clockwise rotating
field); the specifications (voltage, amperage) must correspond to the
specifications on the type plate of the machine.
The machine must be shut down until a damaged power
supply line has been repaired!
Check the power supply line regularly!
Check the correct direction of the rotary field by starting
the machine. The machine does not start in case of wrong
rotational field!
•In this case, an electrician has to change the rotating
field inside the mains plug.
•The power supply to the machine must be fuse-pro-
tected with 16 A and protected with an AC/DC sensi-
tive RCD (type B).
Swivel range
Hood of conveyor belt + knife protection box