12EU Declaration of Conformity ................................................................................... 32
2 Introduction
Read this user manual thoroughly before using the machine.
The machine is use for weighing potatoes, onions, carrots and other similar products.
The machine can weight portion sizes from 1–50 kg.
The machine can weigh large portions up to 1000 kg.
The machine may be operated in a temperature range of -10 to +40 C°.
The information plate and CE label are positioned on the side of the machine, close to the
control panel.
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3 Safety
Any persons working in the close vicinity of the machine must not wear loose-fitting
clothing as this will be hazardous.
3.1Pictograms
Two types of pictograms are positioned on the machine. Warnings and instructions.
Warnings
HAZARD - ROTATING PARTS.
Avoid touching or coming into contact with the machine's
moving parts. This applies to fingers and clothing, since this
can lead to mutilation.
CRUSH HAZARD.
Avoid touching or coming into contact with the machine's
moving parts. This applies to fingers and clothing, since this
can lead to mutilation.
Instructions
HOOK
Describes where the hook must be positioned when the machine is to be
lifted by a crane.
STRAP HERE
Describes where the machine shall be secured during transport.
FORKLIFT TRUCK
Describes where the forks must be positioned when lifting with a forklift
truck.
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4 In general
Description of machine
Feed belt
Buffer tank
Vibration chutes
Weighing tank
Feed hopper
Operating panel
Cross conveyor
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4.1Feed belt
The feed belt transports the products from the feed hopper up to the buffer tank above the
vibration chutes. The buffer tank has two sensors that activate and deactivate the feed
belt.
To achieve optimal operation, it is important that the feed hopper is always filled
with products.
4.2Vibration chutes
The machine is equipped with three vibration chutes, designed to fill and dose the
weighing tank.
All three of the vibration chutes switch on automatically when the weighing tank shall be
filled and only two of the chutes operate when dosing for the required weight.
Fill chute.
Dosing chute
Fill chute.
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4.3Weighing tank
The weighing tanks' volume capacity is 57 l.
The weighing tank must be checked regularly and if required, cleaned of any soil that has
accumulated.
During operation, the weighing tank must not be touched otherwise the weighing result will
not be correct.
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4.4Cross conveyor
The cross conveyor allows the machine to be operated by two people at the same time.
Operation sensor
Outlet hopper
Handle for stabiliser leg
Sack platform
When the operating sensor is activated on a specific side, the cross conveyor will transport
the next portion to that side.
NB: The machine 'remembers' an activation of the operating sensor, even though the
cross conveyor is not ready to deliver a portion!
The machine is supplied with four outlet hoppers as standard. Two hoppers for portion
sizes 1–9 kg and two hoppers for 10–50 kg.
Outlet hopper 10–50 kg
Outlet hopper 1–9 kg
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4.5Sack platform
When the height of the sack platform shall be changed, loosen the two finger screws on
the platform and raised/lower the platform and then re-tighten the finger screws.
When weighing portions that weigh more than 10 kg, lower the stabiliser leg at the sack
platform until it supports on the level surface.
Handle for
stabiliser leg
Stabiliser leg
4.6Operating panel
The operating panel consists of a touch display and a stop.
All of the machine's electrical functions are operated via the touch display.
5 Operation
Before commissioning the machine, check it to ensure it has not been damaged during
transport.
Any defects must be reported to the dealer immediately.
5.1Set-up
To ensure correct weighing, the machine must be placed on a stable and level surface.
5.2Electrical connection
The electrical connection must comply with national applicable regulations.
1 Phase 230 V - N + PE
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5.3Start-up
1. Enter the desired portion size and total number of portions that are to be weighed
using the operating panel.
2. Next, select the programme that is to be used (potatoes, carrots, onions or
optional).
3. Press the "Start" button on the display.
4. The operating sensor is activated.
NB: In the case of start-up after the portion size has been changed the machine may
initially weigh inaccurately. The machine will regulate this automatically after a few
weighings.
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6 Control
6.1 Homescreen
Portion sizes
Total number of
portions
Actual weight in
the weighing tank
∑ Sum of weighings
X Average value
Ϭ Standard deviation
Return to
homescreen
Start/Pause/Repeat
Product
6/10
Settings Empty function Alarms
6 5.01 kg
5 5.10 kg
4 5.04 kg
3 5.00 kg
2 5.03 kg
1 5.07 kg
Stop
Precision
Speed
Reset alarms
6.2Settings
Language
setting
Skals contact
information
Verification
Manual
operation
settings
Automatic
operation settings
Calibration
of scales
Scales settings
locked
Actual weight
in the
weighing tank
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6.3Skals
Skals contact information is shown here
Should you have any questions about the machine, contact your dealer in the first
instance.
Verification
The verification ID and date of last filling is show here.
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6.4Automatic operation settings
There are four areas that can be set: Feed belt, vibration chutes, weight and cross
conveyor, of which the last three are relevant for normal operation.
Feed belt
Speed, see next
image
Time setting
Minimum rpm of
the drum motor
for the feed belt
should be set to
700 rpm.
Total rpm, the
drum motor
speed increases
every time it
accelerates.
Should not be
changed.
700 1500
Maximum rpm
of the drum
motor for the
feed belt should
be set to
1500 rpm.
Total rpm, the
drum motor
speed lowers
every time it deaccelerates.
Should not be
changed.
Time interval
between
automatic
change of
speed.
1000 2000
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chute
Vibration chutes
Estimated flow
when dosing
Vibration power
in percent.
Should not be
less than 50%
Back to
previous menu
Scales
Motor speed for
tank shutter
Should not be
changed.
Total number of
portions between
each auto taring.
See explanation
Auto taring
Automatically tares the scales zero point after a set number of portions (e.g. 20).
In the case of dirty products, it is relevant to have a low total number of weighings between
each auto taring. Build up of dirt in the weighing tank affects the weighing result.
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85
Estimated flow
when filling
Vibration power
in percent.
Should not be
less than 55%
and should
always be
greater than
2
Scales settings
See next image
Product specific
settings.
(potatoes, carrots
etc.)
Alarm times
Should not be
changed.
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Weight Speed
Weight settings
Back to
previous menu
Offset 25 kg:
When a double portion is made (over 25 kg), Offset 25 kg must be between 1500 and
3500 g to stop around the 25 kg. This is necessary to compensate for the run-on time and
prevent the weighing tank from becoming over filled with the first portion.
Tolerance
This is the limit for when the scales begins to be regulated.
If the products that are being weighed weigh up to 100 g, the tolerance must be the same
or 10 % greater.
Controller parameter
Parameter that determines how aggressive the controller reacts
Weigher opening
speed
Tolerance interval
in grams, see
explanation
Controller
parameter
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Product specific parameters
Filling setpoint
is controlled by
the slider on
the main page
Cross conveyor
Aut. or manual
outfeed mode.
Manual = sensor
Aut. = after first
touch of the
sensor, next
portions are
feeded
automatically
Back to
previous menu
Empty time
The time that is set to ensure that the belt is completely empty.
Speed
If there are problems with the products coming out of the outlet hopper, reduce the speed.
2300 700
Time guess_a is a
value used for
portions up to 10kg.
Lighter products =
higher value.
The speed of the
cross conveyor
should be between
600 and 900 rpm
Delay and run-signal
to next machine
External signal
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6.5Manual operation settings
During manual operation, all of the functions can be set and the machine operated.
NB: In manual operation mode, all of the alarms and sensors are de-activated.
Language
Five languages are available.
English
German
Danish
French
Russian
Lock
When the scales are locked, there is limited access to certain functions.
Scales guide
Programme 0-3
Scales guide (calibration)
To calibrate the scales, follow the instructions in the display.
Place a known weight in the weighing tank during calibration.
The weighing tank must be clean inside.
Every time the scales are calibrated a new ID number is generated, which can be seen
under the verification ID and a date for the last calibration.
Alarms
All of the alarms that can be triggered are shown in the troubleshooting section.
When an error is observed and corrected, the alarm is reset
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6.6Emptying the machine
If the machine is to be completely emptied, continue to weigh portions without filling the
intake hopper with any products. Once the vibration chutes have operated for a longer
period than normal, press Stop.
Next, empty the weighing tank and the cross conveyor by accessing the manual settings
and press to empty.
7 Service and maintenance
During service and maintenance, ensure power has been disconnected at the main switch
and the main switch is locked.
7.1Bearings
All of the bearings and motors and the loose drum have been lubricated at the factory and
require no maintenance.
7.2Gear
The worm gear that drives the weighing tank's open/close function has been lifetime
lubricated with synthetic grease for operation in standard temperature range (-10 to +40
°C).
7.3Belt
The machine has two PVC belts fitted. A feed belt and a cross conveyor.
Both belts must be checked regularly and adjusted if required to ensure a long lifetime.
Tighten the belts by loosening the two nuts marked with blue (on both sides) and then
tighten the belt by tightening the top nut. Once the belt has been adjusted, re-tighten the
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bottom nut. The same procedure is used to adjust the belt to operate in the centre.
However, the tightening must only be done in the side the belt moves to.
At all times it is the responsibility of the owner to ensure the belts have been adjusted
correctly.
If the belts have not been adjusted correctly, the warranty for the belts is void.
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7.4Vibration chutes
All bolts and vibration chutes should be re-tightened every 200 hours of operation.
To access the bolts, remove the screen marked in blue.
The bolts are marked in blue, and should be tighten to 18 Nm.
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7.5Cleaning
In the case of high-pressure cleaning, direct spraying must be avoided in the following
areas: loose drum, gear motors, control cabinet, electronic control box, load cell,
connectors and motors on vibrators.
If products with loose skin are being weighed, the vibrator chutes should be cleaned on a
daily basis.
Good cleaning and maintenance are important to achieve a high degree of reliable
operation and low maintenance costs.
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8 Transport
If the machine shall be lifted by crane, this must be done using the integrated lifting points
in the top of the machine. If the machine shall be moved by forklift truck, this must be done
using the integrated fork pockets.
NB: Always stay well clear of suspended loads.
During transport the machine must be secured to the surface, as shown with the orange
lines.
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9 Troubleshooting
NB: The machine must ALWAYS be switched off at the main switch when work on
mechanical parts shall be carried out.
9.1 Fault described in display.
Alarm text Cause Solution
Shutter in weighing tank
taking too long to close.
Scales taking too long to fill
up.
Sensor is not adjusted
correctly.
Defective sensor. Check the conductor to the
Foreign bodies are blocking
the shutter in the weighing
tank.
There are not enough
products in the buffer tank.
Feed belt not regulating to
faster speed.
Products are blocked in the
buffer tank.
Adjust the sensor closer to
the crank plate
(distance 1-3 mm).
sensor. Replace sensor.
Remove foreign bodies.
Fill the intake hopper with
products.
See other faults.
Remove the blockage in the
buffer tank.
Set the plate in the buffer
tank to the applicable
product's size.
Fault on all of the frequency
converters.
Aborting of both belts and
scales.
Automatic fuse switched off. Switch on automatic fuse
(see control).
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9.2Other faults.
Error Cause Solution
Weighing tank or cross
conveyor does not start with
operation of operation
Operation sensor is
defective.
Check the conductor to the
sensor. Replace sensor.
sensor.
Buffer tank is not full and the
feed belt is not operating.
The top sensor in the buffer
tank is dirty or defective.
Clean sensor and reflector.
Feed belt not regulating to
faster speed.
The bottom sensor in the
buffer tank is dirty or
defective.
Green LED on sensor must
be lit at all times (indicates
Clean sensor and reflector.
Check the conductor to the
sensor.
Replace sensor.
sensor is in contact with the
control system).
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10 Spare parts list
When ordering spare parts, please state machine type, serial number and any product
number.
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10.1Weighing tank
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10.2Vibrator chute
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10.3Feed belt
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10.4Cross conveyor
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Complete capacitive sensor
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11 Diagrams
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12 EU Declaration of Conformity
Manufacturer
Company name: A/S Skals Maskinfabrik
Address: Hovedgaden 56
DK-8832 Skals, Denmark
Telephone: +45 87 25 62 00
hereby declares that
Machine:Weighing machine
Brand:
Type, serial no., year:
Has been manufactured in conformity with the:
1 Machinery Directive 2006/42/EC
2 Low Voltage Directive (LVD) 2006/95/EC
3 Electromagnetic Compatibility (EMC) Directive 89/336/EEC and the