KERN HFM 1T0.1, HFM 3T0.5, HFM 5T0.5, HFM 10T1 Operating Instructions Manual
Operating instructions
Electronic Crane Scales
Logbook
Regular maintenance and care
KERN HFM
Version 1.3
HFM-BA-e-1813
2
GB
KERN HFM
Version 1.3 2018-02
Operating instructions / logbook
Electronic Suspending Balance
Table of Contents
1. Technical Data ______________________________________________________________ 3
1.1 Dimensions (mm) _____________________________________________________________ 4
1.2 Nameplate __________________________________________________________________ 5
1.3 EC-Declaration of -Conformity ___________________________________________________ 6
2. General S afety Ins tructions ___________________________________________________ 7
3. The crane s cales at a glance _________________________________________________ 10
3.1 Overview __________________________________________________________________ 10
3.2 Display ____________________________________________________________________ 11
3.3 Keyboard __________________________________________________________________ 11
3.3.1 Numeric entry _______________________________________________________________ 12
3.4 Radio remote control _________________________________________________________ 12
3.5 Sticker ____________________________________________________________________ 13
4. Commiss ioning ____________________________________________________________ 14
4.1 Unpacking _________________________________________________________________ 14
4.2 Checking the original dimensions _______________________________________________ 14
4.3 Rechargeable battery operation _________________________________________________ 15
4.3.1 Standby mode ______________________________________________________________ 15
4.4 Suspending the balance_______________________________________________________ 16
5. Operation _________________________________________________________________ 17
5.1 Safety instructions ___________________________________________________________ 17
5.2 Loading the crane scales ______________________________________________________ 18
5.3 Turn on/off _________________________________________________________________ 21
5.4 Setting balance to zero _______________________________________________________ 21
5.5 Taring _____________________________________________________________________ 22
5.6 Weighing __________________________________________________________________ 22
5.7 Record weight value (freeze) ___________________________________________________ 22
6. Menu _____________________________________________________________________ 23
7. Adjus tment ________________________________________________________________ 25
8. Error mes sages ____________________________________________________________ 26
9. Cleaning, Repair, Maintenance and Disposal ____________________________________ 27
9.1 Cleaning and Disposal ________________________________________________________ 27
9.2 Regular maintenance and care _________________________________________________ 27
9.3 Checklist „Regular maintenance“, (see chapter 9.2) _________________________________ 29
10. Appendix __________________________________________________________________ 32
10.1 Checklist „Enhanced maintenance“ (General revision) _______________________________ 32
10.2 List „spare parts and repair of safety-relev ant parts “ _________________________________ 33
HFM-BA-e-1813 3
1. Technical Data
KERN HFM 1T0.1 HFM 3T0.5 HFM 5T0.5 HFM 10T1
Readability (d) 0.1 kg 0.5 kg 0.5 kg 1 kg
Weighing range (max) 1 000 kg 3 000 kg 5 000 kg 10 000 kg
Taring range (subtractive) 1 000 kg 3 000 kg 5 000 kg 10 000 kg
Reproducibility 500 g 1 kg 2.5 kg 5 kg
Linearity ±1 kg ±2 kg ±5 kg ±10 kg
Recommended adjustment
weight, not added (class)
1 t (M1) 3 t (M1) 5 t (M1) 10 t (M1)
Stabilization time 2 s
Precision 0.2 % of max.
Warm-up time 30 min
Unit kg
Allowable ambient
temperature
0…+40 °C
Relative humidity 0 to 80 %, non-condensing
Supply voltage 220V - 240V AC 50 Hz
Secondary voltage
powerpack
9V, 800 mA
Rechargeable battery
(standard equipment)
6 V, 10 Ah
Service life – background illumination ON - 50 h
Loading time 14 h
Display Digit height 30 mm
Housing size W x D x H,
(mm)
270 x 175 x 200 300 x 190 x 230
Housing material Metal, lacquered
Material hook and shackle Nickel plated steel
Net weight (kg) 16 18 23 35
Remote control (standard
equipment)
Battery Size 23A (1 x 12V)
W x D x H 48 x 16 x 95 mm
HFM-BA-e-1813
4
1.1 Dimensions (mm)
A B C D F H
∅
1
∅
2
∅
3
X
HFM 1T0.1 270 173 200 40 98 285 51 68 25 540
HFM 3T0.5 270 173 200 40 95 540 63.5 74 29 610
HFM 5T0.5 297 185 230 55 95 635 63.5 74 29 700
HFM 10T1 297 185 230 60 110 750 76.2 92 35 840
HFM-BA-e-1813 5
1.2 Nameplate
1
KERN Logo
2
Model designation
3
Weighing range [Max]
4
Data for power supply
5
Company address
6
Readability [d]
7
Date of manufacture
8
CE mark
9
Disposal symbol
0
Serial number
HFM-BA-e-1813 7
2. General Safety Instructions
Duties of the owner-operator
Follow the national accident prevention regulations as well as the working, operating
and safety regulations of the owner-operator.
Observe all safety regulations of the crane manufacturer.
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 crane scales are modified or
used improperly and if damage is resulting from such use.
Carry out regular maintenance and care of the crane scales, the crane and the
load suspension devices (see chapter 9).
Log the test result and keep it in the logbook.
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
crane scales.
Assembly, commissioning and maintenance should only be carried out by trained
specialists.
Repair of safety-relevant pieces may only be carried out by KERN or by service
partners authorized by Messrs. KERN. (competence certificate or training).
Use original spare parts only.
All repairs and spare parts must be documented by the service partner (see list,
chap. 10.3).
All maintenance must be documented (see checklist chap. 9.3).
Load suspending components may only be exchanged as a complete spare parts
set. The dimensions of the new components must be noted (see checklist chapter
9.3).
Ambient conditions
Never operate the crane scales in explosive environment. The serial version is
not explosion protecte d.
Operate the crane scales only under environmental conditions as specified in
these operating instructions (especially in chapter 1 „Technical data“).
Do not expose the crane scales to strong humidity. Non-permi tted 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 operate the crane scales in corrosive environment.
Protect the crane scales against high humidity, vapours and dust.
HFM-BA-e-1813
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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.
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 crane hook only vertically, manually,
carefully and without jerks. As soon as a stable weighing value is reached the
weighing value can be read.
Use the crane scales 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, crane scales 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 crane scales or of the crane are not
allowed.
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“ in the balance. (Example: Slowly
draining fluids from a contai ner sus pen ded 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.
Warranty
Warranty claims shall be voided in case
Our conditions in the operation manual are ignored
The appliance is used outside the described use
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
Safe working
Do not stand underneath suspended loads!
Position the crane in a way that the load is lifted vertically.
When working with the crane and crane scales wear personal safety equipment
(helmet, safety shoes etc.).
HFM-BA-e-1813 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. In KERN’s accredited DKD calibration laboratory test weights and balances
may be calibrated (return to the national standard) fast and at moderate cost.
Testing upon acceptance
When receiving the appliance, please check packaging immediately, and
the appliance itself when unpacking for possible visible damage.
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.
Check the original dimensions, see chap. 4.2.
Shutdown and storage
Take off the crane scales from the crane and dismantle all load attachment
devices from the crane scales.
Do not store the crane scales at open air
HFM-BA-e-1813
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3. The crane scales at a glance
The crane scales are a multi-purpose and cost-saving solution for overhead weighing
applications such as e.g. recycling, metal processing, machine engineering, transport
and logistics.
With the radio remote control, operation will be more comfortable yet.
3.1 Overview
Fig. 1: Front view of balance Fig. 2: Radio remote control
1 Shackle 6 Antenna
2 Display 7 Keyboard,
see chapter 3.4
3 Keyboard
4 Safety bracket
5
Hook, rev olva ble
HFM-BA-e-1813 11
3.2 Display
LED The LED lights up, if
HOLD the data-hold function is active
the weight display is stable
a
the weight is in the area around the zero point
when the battery is being recharged
3.3 Keyboard
Button
Description of function
ON/OFF
• Turn on or off the balance
• Modification of readability
HFM 1T0.1: 100g200g500g
HFM 3T0.5: 500g 1 kg2 kg
HFM 5T0.5: 500g 1 kg2 kg
HFM 10T1: 1 kg 2 kg5 kg
• Scroll forward in menu
HOLD
• Record weight value (freeze)
• Exit menu
a
• Taring
• Zeroing
• C on fir m entr y
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