skals AMV1 User Manual

Manual

Weighing Machine

AMV1

A/S SKALS MASKINFABRIK

HOVEDGADEN 56

DK-8832 SKALS, DENMARK

Tel.: [phone]
Fax: [phone]

Email: [e-mail]

http://www.skals.dk/

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1 Contents

1 Contents ........................................................................................................................ 2

2 Introduction ................................................................................................................... 3

3 Safety ............................................................................................................................ 4

3.1 Pictograms .......................................................................................................................... 4

4 In general ...................................................................................................................... 5

4.1 Feed belt ............................................................................................................................. 6

4.2 Vibration chutes .................................................................................................................. 6

4.3 Weighing tank ..................................................................................................................... 7

4.4 Cross conveyor ................................................................................................................... 8

4.5 Sack platform ...................................................................................................................... 9

4.6 Operating panel .................................................................................................................. 9

5 Operation ...................................................................................................................... 9

5.1 Set-up ................................................................................................................................. 9

5.2 Electrical connection ........................................................................................................... 9

5.3 Start-up ............................................................................................................................. 10

6 Control ......................................................................................................................... 11

6.1 Homescreen ..................................................................................................................... 11

6.2 Settings ............................................................................................................................. 11

6.3 Skals ................................................................................................................................. 12

6.4 Automatic operation settings ............................................................................................ 13

6.5 Manual operation settings ................................................................................................ 17

6.6 Emptying the machine ...................................................................................................... 18

7 Service and maintenance ............................................................................................ 18

7.1 Bearings ........................................................................................................................... 18

7.2 Gear .................................................................................................................................. 18

7.3 Belt ................................................................................................................................... 18

7.4 Vibration chutes ................................................................................................................ 20

7.5 Cleaning ........................................................................................................................... 21

8 Transport ..................................................................................................................... 22

9 Troubleshooting .......................................................................................................... 23

9.1 Fault described in display. ................................................................................................ 23

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9.2 Other faults. ...................................................................................................................... 24

10 Spare parts list ......................................................................................................... 25

10.1 Weighing tank ................................................................................................................... 26

10.2 Vibrator chute ................................................................................................................... 27

10.3 Feed belt ........................................................................................................................... 28

10.4 Cross conveyor ................................................................................................................. 29

11 Diagrams .................................................................................................................. 31

12 EU Declaration of Conformity ................................................................................... 32

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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.

3.1 Pictograms

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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4.1 Feed 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.

4.2 Vibration 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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4.3 Weighing 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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4.4 Cross 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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4.5 Sack 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

4.6 Operating 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.

5.1 Set-up

To ensure correct weighing, the machine must be placed on a stable and level surface.

5.2 Electrical connection

The electrical connection must comply with national applicable regulations.

1 Phase 230 V - N + PE

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5.3 Start-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

6.2 Settings

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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6.3 Skals

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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6.4 Automatic 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.

75

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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6.5 Manual 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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6.6 Emptying 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.

7.1 Bearings

All of the bearings and motors and the loose drum have been lubricated at the factory and
require no maintenance.

7.2 Gear

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).

7.3 Belt

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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