KERN CH User manual

Operating manual &UDQH6FDOHV
Logbook
Regular maintenance and care
KERN CH
Version 3.2
08/2014
GB
CH-BA-e-1432
PCE Americas Inc.
711 Commerce Way
Suite 8
Jupiter
FL-33458
USA
From outside US: +1
Tel: [phone]
Fax: [phone]
[email protected]
www.pce-instruments.com/english
www.pce-instruments.com
PCE Instruments UK Ltd.
Units 12/13
Southpoint Business Park
Ensign way
Hampshire / Southampton
United Kingdom, SO31 4RF
From outside UK: +44
Tel: [phone]
Fax: [phone]
[email protected]
by

GB
KERN CH
Version 3.208/2014
Operating instructions / Logbook
Electronic Suspending Balance
Contents
1. Technical data ______________________________________________________________ 3
1.1 Dimensions _________________________________________________________________ 4
2. General S afety Instructions ___________________________________________________ 5
2.1 Duties of the owner-operator ____________________________________________________ 5
2.2 Organizational measures_______________________________________________________ 5
2.3 Environmental conditions_______________________________________________________ 5
2.4 Pay attention to the instructions in the Operation Manual______________________________ 6
2.5 Proper use __________________________________________________________________ 6
2.6 Improper Use ________________________________________________________________ 6
2.7 Warranty____________________________________________________________________ 6
2.8 Safe working ________________________________________________________________ 7
2.9 Monitoring of Test Resources ___________________________________________________ 7
2.10 Testing upon acceptance_______________________________________________________ 7
2.11 Initial Commissioning__________________________________________________________ 7
2.12 Shutdown and storage_________________________________________________________ 7
3. The s us pended balance at a glance_____________________________________________ 8
3.1 Overview ___________________________________________________________________ 8
3.2 Overview visual displays and keyboard___________________________________________ 10
3.3 Label______________________________________________________________________ 11
4. Commis sioning ____________________________________________________________ 12
4.1 Unpacking _________________________________________________________________ 12
4.2 Scope of delivery ____________________________________________________________ 12
4.3 Checking the original dimensions _______________________________________________ 13
4.4 Battery operation ____________________________________________________________ 13
5. Operation _________________________________________________________________ 14
5.1 Safety instructions ___________________________________________________________ 14
5.2 Loading the suspended balance ________________________________________________ 16
5.3 Turn on/off _________________________________________________________________ 18
5.4 Taring_____________________________________________________________________ 18
5.5 Weighing __________________________________________________________________ 18
5.6 Switch-over weighing unit _____________________________________________________ 19
5.7 Functions __________________________________________________________________ 19
6. Menu _____________________________________________________________________ 21
7. Adjus tment ________________________________________________________________ 22
8. Cleaning, Maintenance and Disposal___________________________________________ 23
8.1 Cleaning and Disposal________________________________________________________ 23
8.2 Regular maintenance and care _________________________________________________ 24
8.3 Checklist „Regular maintenance“________________________________________________ 26
9. E nclos ure _________________________________________________________________ 29
9.1 Checklist „Enhanced maintenance“ (General revision) _______________________________ 29
10. Declaration of conformity ____________________________________________________ 30
2 CH-BA-e-1432

1. Technical data
KERN CH 15K20 CH 50K50 CH 50K100
Readability (d) 20 g 50 g 100 g
Weighing range (max) 15 kg 50 kg 50 kg
Taring range (subtractive) 15 kg 50 kg 50 kg
Reproducibility 20 g 50 g 100 g
Linearity ± 40 g ± 100 g ± 200 g
Recommended adjustment
weight, not added (class) 10 kg (M3) 20 kg (M3) 20 kg (M3)
Stabilization time 2 s
Warm-up time 10 min
Units kg, lb, N
Auto off 3 min
Allowable ambient
temperature 5…+ 35 °C
Ambient humidity (max) 80 %
Battery
(in series) 1 x 9 V Block Operating time 20 h
Display Digit height 11 mm
Housing size W x D x H 90 mm x 30 mm x 176.5 mm
Housing material Synthetic material
Material Hook Stainlees steel
Net weight 250 g
CH-BA-e-1432 3

1.1 Dimensions
4 CH-BA-e-1432

2. General Safety Instructions
2.1 Duties of the owner-operator
Follow national accident prevention regulations and all operator health and
safety at work and operating regulations.
The balance may only be used for the proposed purpose. Any type of use which
is not specified in these operating instructions, will be considered as improper
use. The customer is solely responsible for material damage and injury of persons
resulting from an improper use, Messrs. KERN & Sohn will not be liable under
any circumstance.
Messrs . KERN & Sohn cannot be held liable, if the suspended balance is
modified or used improperly and if damage is resulting from such use.
Inspect and service suspended balance and load suspension device regularly
(see chap. 8.3).
Log the test result and keep it in the logbook.
2.2 Organizational measures
Only trained and instructed staff may operate the balance.
Make sure that the operating instructions are kept nearby the operation site of the
suspended balance.
Assembly, commissioning and maintenance should only be carried out by trained
specialists.
Weight-bearing components must not be replaced
2.3 Environmental conditions
Never operate suspended balance in spaces exposed to explosion hazards. The
serial version is not explosion protected.
Operate the suspended balance only under environmental conditions as specified
in these operating instructions (especially in chapter 1 „Technical data“).
Do not expose the suspended balance to strong humidity. Non-permitted
condensation (condensation of air humidity on the appliance) may occur if a cold
appliance is taken to a considerably warmer environment. In this case,
acclimatize the disconnected appliance for ca. 2 hours at room temperature.
Do not use suspended balance in environments exposed to corrosion hazards.
Protect the suspended balance against high humidity, vapours and dust.
Major display deviations (incorrect weighing results) may be experienced should
electromagnetic fields (e.g. due to mobile phones or radio equipment), static
electricity accumulations or instable power supply occur. Change location or
remove source of interference.
CH-BA-e-1432 5

2.4 Pay attention to the instructions in the Operation Manual
Carefully read this operation manual before setup and
commissioning, even if you are already familiar with KERN balances.
All language versions contain a non-binding translation.
The original German is binding.
2.5 Proper use
The balance you purchased is intended to determine the weighing value of material
to be weighed. It is intended to be used as a “non-automatic“ balance, i.e. the
material to be weighed is suspended on the load receptor only vertically, manually,
carefully and without jerks. As soon as a stable weighing value is reached the
weighing value can be read.
Use the suspended balance only for lifting and weighing of freely movable loads.
Danger of injury due to improper use. Not allowed are e.g.:
- Exceeding the allowed nominal load of crane, suspended balance or any
type of load attachment devices
- Conveying persons,
- Pulling loads over an inclined surface,
- Tearing-off, pulling or towing loads.
Modifications or reconstructions of the suspended balance are not allowed.
2.6 Improper Use
Do not use balance for dynamic weighing. In the event that small quantities are
removed or added to the material to be weighed, incorrect weighing results can be
displayed due to the “stability compensation“. (Example: Slowly draining fluids from a
container suspended on the balance.) Do not leave permanent load suspended on
the balance. This may damage the measuring system as well as safety-relevant
parts.
The balance may only be used according to the described conditions. Other areas of
use must be released by KERN in writing.
2.7 Warranty
Warranty claims shall be voided in case
Our conditions in the operation manual are ignored
The appliance is used outside the described uses
The appliance is modified or opened
Mechanical damage and damage caused by media, liquids,
Natural wear and tear
The appliance is improperly set up or incorrectly electrically connected
The measuring system is overloaded
6 CH-BA-e-1432

2.8 Safe working
Do not stand under swinging loads, see chap. 5.1.
2.9 Monitoring of Test Resources
In the framework of quality assurance the measuring-related properties of the
balance and, if applicable, the testing weight, must be checked regularly. The
responsible user must define a suitable interval as well as type and scope of this test.
Information is available on KERN’s home page with regard to
the monitoring of balance test substances and the test weights required for this. In
KERN’s accredited DKD calibration laboratory test weights and balances may be
calibrated (return to the national standard) fast and at moderate cost.
2.10 Testing upon acceptance
Inspect packaging immediately upon receipt and inspect device when unpacking, see
chap. 4.1. in the event of any evident damage.
2.11 Initial Commissioning
In order to obtain exact results with the electronic balances, your balance must have
reached the operating temperature (see warming up time chap. 1).
During this warming up time the balance must be connected to the power supply
(mains, accumulator or battery).
The accuracy of the balance depends on the local acceleration of gravity.
Strictly observe hints in chapter Adjustment.
For checking original dimensions, s. chap. 4.3
2.12 Shutdown and storage
Switch off suspended balance and remove batteries
Do not store suspended balance outdoors.
CH-BA-e-1432 7

3. The suspended balance at a glance
3.1 Overview
1 Display
2 Keyboard
3 Hooks
4 Tape measure
8 CH-BA-e-1432

1 Battery compartment
2 Tape measure
CH-BA-e-1432 9

3.2 Overview visual displays and keyboard
Displays:
kg The current measuring unit is kilogram
lb The current measuring unit is pound
NThe current measuring unit is Newton
Indicates the weight value depending on the active setting H1-H6
(see chap. 5.7).
H1-H4: Data-Hold function
H5 Animal weighing function
H6 Peak value function
LO Capacity of batteries exhausted
E Overload
Keyboard:
Key
Description
Description of function
ON/OFF
button
•Switch on balance
•Switch off balance (hold button)
•Taring
•Scroll forward in menu
UNIT-button Switch over weighing unit (kglbN)
HOLD button
•Set weight display
•Display average value for animal weighing
•Confirm menu setting
10 CH-BA-e-1432

3.3 Label
Do not stand or go under suspended loads.
Do not use on building site.
Keep an eye on suspended loads.
(example)
Do not exceed nominal rated load of balance.
The product conforms to the requirements of the
German Equipment and Product Safety Act.
CH-BA-e-1432 11

4. Commissioning
+Always observe chapter 2 „General Safety Instructions“!
4.1 Unpacking
SAFETY
INSTRUCTIONS
for protection against
break
Once delivered and unpacked, suspended balance will
not be taken back.
The suspended balance is sealed by KERN.
Removal from packaging is also sealed.
+Broken seal obliges to purchase.
Fig.: Seal
Thanks for your comprehension.
Your KERN Quality assurance team
4.2 Scope of delivery
Remove balance and accessories from packaging, remove packaging material.
Verify that there has been no damage and that all packing items are present.
•Suspended balance, see chap. 3.0
•Hook (stainless steel)
•Batteries (1 x 9 V block)
•Operating instructions / logbook
12 CH-BA-e-1432

4.3 Checking the original dimensions
Enter the original dimensions shown on the production data sheet in the grey
boxes of checklist chap. 8.3.
Check original dimension of suspended balance; for implementation see chap. 8.3
„Regular Maintenance“
Enter all data (date, tester, results) in the first line under „Inspection before first
use“ in the checklist (see chapter 8.3)
CAUTION
If the dimensions of your first safety inspection do not match those
of KERN, the balance must not be put into operation. In this case
please contact a service partner authorised by Messrs. KERN.
4.4 Battery operation
1 x 9 V block battery
Push out battery cover on the rear side of the balance in arrow direction. Insert V
block battery. Reinsert the battery cover. If the batteries are empty, in the balance
display appears “LO”. Press ON/OFF/TARE -key and replace the batteries
immediately. In order to save the battery, the balance switches automatically off after
4 minutes without weighing. This auto-off function can be deactivated in the menu
(see chap. 6).
CH-BA-e-1432 13

5. Operation
Keep balance only by hand, see fig.
(do not use a crane or alike).
5.1 Safety instructions
DANGER
Risk of injury due to falling loads!
14 CH-BA-e-1432

Take great care when operating the crane and follow the
general rules for crane operation.

Check all parts (hook, carbines, rings, rope slings,
cables, chains etc.) for excessive wear or damage
Work only with appropriate speed
Always avoid vibrations and horizontal forces. Avoid
any kind of shock, torsion and oscillating (e.g. caused
by inclined suspending)
Do not use the suspended balance for conveying loads.
Do not stand or go under suspended loads.
Do not use on building site.
Keep an eye on suspended loads.
(example)
Do not exceed nominal rated load of suspended balance
or any kind of attachment device on the suspended
balance.
CH-BA-e-1432 15

5.2 Loading the suspended balance
For good weighing results observe the following, illustrations see next page:
Do not suspend the balance on load attachment devices. Use only when keeping
by hand.
Do not pull or push the load or the loaded balance.
Do not pull the hook horizontally.
Loading the balance
1. Position the hook of the suspended balance over the load.
2. Suspend and lift the load. (directly on the hook)
16 CH-BA-e-1432

Keep balance only by hand!
Do not push or pull
Do not pull the hook
horizontally
CH-BA-e-1432 17

5.3 Turn on/off
Start-up
Press the ON/OFF/TARE-key. The display lights up and the balance carries out a
selftest. The selftest is completed when the weight value 0.0 appears on the
display.
Switching Off
Press the ON/OFF/TARE-key for a long time.
5.4 Taring
Suspend preload.
Press the ON/OFF/TARE-button, the zero display appears. The weight of the
container is now internally saved.
Weigh the material, the net weight will be indicated.
After removing the preload weight appears as negative display.
To delete the tare value, remove load from the suspended balance and press the
TARE button.
5.5 Weighing
Load the suspended balance.
The weight value will be displayed at once.
Overload warning
Overloading exceeding the stated maximum load (max) of the balance, minus
a possibly existing tare load, must be strictly avoided. This could cause
damage to the balance.
Exceeding the maximum load is indicated by the display „E“.Unload balance
or reduce preload.
18 CH-BA-e-1432

5.6 Switch-over weighing unit
The next measuring unit will be displayed kg

lb

Nafter each press of the UNIT
button.
The indicator shows the active unit.
5.7 Functions
With help of the Hold-key the following functions can be activated:
Adjustment Function
H1 Data-Hold function 1
Weighing value frozen for 5 sec. after pressing
the Hold-key
+see chap.
5.7.1
H2 Data-Hold function 2
The weighing value will be frozen after pressing
the Hold-key until another key is actuated
H3 Data-Hold function 3
The weighing value is automatically frozen for 5
sec.
H4 Data-Hold function 4
The weighing value is automatically frozen after
reaching a stable value until a key will be
actuated
H5 Animal weighing function
+
see chap.
5.7.2
H6 Peak value function
+
see chap.
5.7.3
CH-BA-e-1432 19

5.7.1 Data-Hold function
Switch on the balance, keep the HOLD-button pressed until the current setting
„Hx“ (H1 – H6) appears.
Press ON/OFF/TARE-button repeatedly until the desired setting „H1-H4“ is
displayed.
Confirm setting with the HOLD button.
Suspend the material to be weighed
The weight value is fixed and displayed depending on the setting (H1 – H4) (see
chap. 5.7), represented by the [] in the upper left.
5.7.2 Animal weighing function
This function is suitable for busy weighing procedures. The result is a mean value
formed by 16 weighing values.
Switch on balance using the ON/OFF/TARE–button
Press the HOLD-button and keep it pressed until „H x“ in the display appears
Press the ON/OFF/TARE-button until „H5“ in the display appears.
Save the setting by shortly pressing the HOLD-button
Press the HOLD-button anew
Upside left in the display a [] starts flashing.
Suspend a load
As long as the [] flashes, the weighing values are recorded.
After that the average weighing value of the recorded weighing values is
recorded.
20 CH-BA-e-1432