Berner BACIW BL MS Manual Original página 18

Remove the battery pack before starting any work on the
machine.
Do not dispose of used battery packs in the household refuse
or by burning them. Your power tool distributor will normally
retrieve old batteries to protect our environment.
Do not store the battery pack together with metal objects (short
circuit risk).
Use only System Berner chargers for charging System Berner
battery packs. Do not use battery packs from other systems.
Never break open battery packs and chargers and store only in
dry rooms. Keep dry at all times.
Battery acid may leak from damaged batteries under extreme
load or extreme temperatures. In case of contact with battery
acid wash it off immediately with soap and water. In case of eye
contact rinse thoroughly for at least 10 minutes and
immediately seek medical attention.
Warning! To reduce the risk of fi re, personal injury, and product
damage due to a short circuit, never immerse your tool, battery
pack or charger in fl uid or allow a fl uid to fl ow inside them.
Corrosive or conductive fl uids, such as seawater, certain
industrial chemicals, and bleach or bleach containing products,
etc., can cause a short circuit.
SPECIFIED CONDITIONS OF USE
The cordless impact wrench can be used to tighten and loosen
nuts and bolts wherever no mains connection is available.
Do not use this product in any other way as stated for normal
use.
RPM SETTING
The function is designed to give the user greater control in
application and reduce damage to the fastener or work surface
by automatically shutting the tool off after the tool senses the
mechanism impacting for approximately one second.
EC-DECLARATION OF CONFORMITY
We declare under our sole responsibility that the product
described under "Technical Data" fulfi lls all the relevant
regulations and the directives 2011/65/EU (RoHS), 2014/30/
EU, 2006/42/EC, and the following harmonized standards have
been used:
EN 62841-1:2015
EN 62841-2-2:2014
EN IEC 55014-1:2021
EN IEC 55014-2:2021
EN IEC 63000:2018
Künzelsau, 2021-05-11
ppa. Jürgen Blatzheim
Director Legal & Compliance
Bevollmächtigt die technischen Unterlagen zusammenzustellen
Berner Trading Holding GmbH
Berner Straße 6
D-74653 Künzelsau
ENGLISH
457 753 - Berner-BACIW BL MS.indd 18 457 753 - Berner-BACIW BL MS.indd 18
Klaus Essler
Managing Director
18
OPERATION
Note: It is recommended after fastening to always check
the torque with a torque wrench.
The fastening torque is aff ected by a wide variety of factors
including the following.
• State of battery charge – When the battery is discharged
voltage will drop and the fastening torque will be reduced.
• Operation at speeds – Operating the tool at low speeds will
cause a reduction in fastening torques.
• Fastening position – Holding the tool or the driving fastener in
various angles will aff ect the torque.
• Drive accessory/socket – Failure to use the correct size
accessory or socket, or a non-impact rated accessory may
cause a reduction in the fastening torque.
• Use of accessories and extensions – Depending on the
accessory or extension fi tment can reduce the fastening force
of the impact wrench.
• Bolt/Nut – Fastening torques may diff er according to the
diameter of the nut or bolt, the class of nut/bolt and the length
of nut/bolt.
• Condition of the fastener – Contaminated, corroded, dry or
lubricated fasteners may vary the fastening torques.
• Condition and base material – The base material of the
fastener and any component in between the surfaces may
eff ect the fastening torque (dry or lubricated base, soft or
hard base, disc, seal or washer between fastener and base
material).
IMPACTING TECHNIQUES
The longer a bolt, screw, or nut is impacted, the tighter it will
become.
To help prevent damaging the fasteners or workpieces, avoid
excessive impacting.
Be particularly careful when impacting smaller fasteners
because they require less impacting to reach optimum torque.
Practice with various fasteners, noting the length of time
required to reach the desired torque.
Check the tightness with a hand-torque wrench.
If the fasteners are too tight, reduce the impacting time.
If they are not tight enough, increase the impacting time.
Oil, dirt, rust or other matter on the threads or under the head
of the fastener aff ects the degree of tightness.
The torque required to loosen a fastener averages 75% to 80%
of the tightening torque, depending on the condition of the
contacting surfaces.
On light gasket jobs, run each fastener down to a relatively light
torque and use a hand torque wrench for fi nal tightening.
BATTERIES
Battery packs which have not been used for some time should
be recharged before use.
Temperatures in excess of 50°C (122°F) reduce the
performance of the battery pack. Avoid extended exposure to
heat or sunshine (risk of overheating).
The contacts of chargers and battery packs must be kept clean.
For an optimum life-time, after use, the battery packs have to
be fully charged.
To obtain the longest possible battery life remove the battery
pack from the charger once it is fully charged.
For battery pack storage longer than 30 days:
Store the battery pack where the temperature is below 27°C
and away from moisture
Store the battery packs in a 30% - 50% charged condition
Every six months of storage, charge the pack as normal.
BATTERY PACK PROTECTION
In extremely high torque, binding, stalling and short circuit
situations that cause high current draw, the tool will vibrate for
about 2 seconds and then the tool will turn OFF.
18.05.2021 09:34:01 18.05.2021 09:34:01