Berner UNI-Press Betriebsanleitung Seite 9

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1.8. Vibrations
Weighted effective value of acceleration
2. Preparations for Use
For use of the BERNER pressing tongsfor the various pipe connection
systems, the currently valid BERNER sales documents are applicable. If
the system manufacturer alters components of pipe connection systems
or markets new ones, their current application status must be enquired
about at BERNER (Fax +49 7940 121-300).
2.1. Electrical connection
Note the mains voltage! Before connecting the drive unit or the rapid char-
ger, check whether voltage on the rating plate matches the mains voltage.
At work sites, in damp surroundings, in the open or in the case of com-
parable types of use, only operate the equipment off the mains using a
30mA fault current protected switch (FI breaker).
The battery supplied with BERNER drive units and the spare batteries are
not charged. Charge the battery before initial operation. Only use the BER-
NER rapid charger (Art. No. 001495) for charging. Once the battery is in-
serted into the rapid charger, the red indicator light flashes. After about 1
hour, the indicator light switches to permanent, meaning the battery is
charged. The battery only reaches its full capacity after several charges.
2.2. Installing (changing) the pressing tongs (1) in radial presses (Fig. 1)
Pull the mains plug or remove the battery. Only use pressing tongs with
a system-specific pressing contour matching the press fitting system for
press ing. BERNER pressing tongs have a letter on both pressing jaws to
identify the pressing contour and a number to identify the size. Consult
and comply with the instructions for installation and fitting of the system's
manufacturers. Never use non-matching pressing tongs (pressing con-
tour, size) for pressing work. The press joint could be unserviceable, and
both the machine and the pressing tongs might be damaged.
The drive unit is best placed on a bench or the floor. Installing (changing)
the pressing tongs is only possible when the press rollers (5) in are fully
retracted. If necessary in the case of the BERNER UNI-Press ACC and
BERNER MULTI-Press ACC press the reset button (13) until the press
rollers (5) are fully retracted.
Open the tongs shank (2). To do so, press the locking pin (4), the tongs
shank (2) jumps out under spring loading. Insert selected pressing tongs
(1). Push home the tongs shank (2) until the locking pin (4) engages. While
doing so, press down the pressure plate (3) directly above the tongs shank.
Do not start radial presses without pressing tongs inserted. Do not start
the pressing operation except to make a press joint. Unless counter pres-
sure is applied by the press fitting, the drive unit or pressing tongs will be
needlessly stressed.
Never operate press when the tongs shank (2) is not locked. Risk of
fracture!
3. Operation
3.1. Radial presses (Figs. 1 to 2)
Before use, always perform a trial pressing with the drive unit and the
press ing tong inserted, with the press fitting in place. The pressing tongs
must close completely. Complete closing of the pressing jaws (10) both
at their tips (Fig. 1, at "A") and at the level of the connecting link (Fig. 1,
at "B") must be observed after completion of pressing. The tightness of
the connection must be checked (country-specific regulations, standards,
guidelines etc. must be followed).
Before use, always check the pressing tongs, in particular the pressing
contour (11) of both pressing jaws (10), for damage or wear. Do not use
damaged or worn pressing tongs again. Otherwise there is a risk of in-
correct pressing or accidents.
If during closing of the pressing tongs a marked ridge is created on the
compression sleeve, the pressing may be defective or not tight (see 5.
Trouble).
3.1.1. Working procedure
Press the pressing tongs (1) together manually until they can be pushed
over the press fitting. Always position the drive unit with the pressing tongs
on the press fitting at right angles to the pipe axis. Release the pressing
tongs so that they close around the press fitting. Hold the drive unit by the
housing grip (6) and the pistol grip (9).
In the case of the BERNER MULTI-Press ACC and BERNER UNI-Press
ACC, hold down the inching switch (8) until the pressing tongs are com-
2
2.5 m/s pletely closed. After completion of press ing, the drive unit switches automati -
cally to return (forced return).
Press the pressing tongs together manually so that they can be removed
from the press fitting.
3.1.2. Operating safety
BERNER MULTI-Press ACC and BERNER UNI-Press ACC ends the
pressing operation automatically, emitting an acoustic signal (clicking),
and returns automatically (forced movement).
Important: Only complete closing of the pressing tongs provides a
perfect press joint. Complete closing of the pressing jaws (10) both
at their tips (Fig. 1, at "A") and at the level of the connecting link (Fig.
1, at "B") must be observed after completion of pressing. If during
closing of the pressing tongs a marked ridge is created on the com-
pression sleeve, the pressing may be defective or not tight (see 5.
Trouble).
3.1.3. Working safety
To ensure safe working, the drive units are equipped with a safety inching
switch. This permits immediate switching off of the drive units at any time,
particularly if a potential hazard arises. The drive units can be switched to
the return function in any position.
4. Maintenance
Important! Irrespective of the above maintenance work, the BERNER
drive units must be returned together with all tools (for ex. pressing tongs,
pressing heads, expanding heads) at least once a year to an authorised
BERNER after-sales service facility for inspection.
4.1. Maintenance
Before maintenance work, pull the mains plug or remove the battery.
Keep the pressing tongs, pressing heads and expanding heads, and par-
ticularly their receptacles, clean. Clean heavily soiled metal parts with tur-
pentine oil, for example, and then rustproof them.
Clean plastic parts (for ex. housing, batteries) only with a mild soap and
a damp cloth. Do not use domestic cleaning agents. These frequently con-
tain chemicals that can attack plastic parts. On no account use petrol, tur-
pentine oil, thinners or similar products to clean plastic parts.
Ensure that liquids never get inside the electrical equipment. Never im-
merse the electrical equipment in liquid.
4.1.1. Pressing tongs
Check the pressing tongs for easy action at regular intervals. If necessary
clean the pressing tongs and lubricate the bolts (12) of the pressing jaws
with machine oil, however do not dismantle the pressing jaw! Remove any
deposits in the pressing contour (11). Check that all pressing tongs are
func tional at regular intervals by a trial pressing operation with the press
fitting inserted. The pressing jaws (10) must close (10) both at their tips
(Fig. 1, at "A") and at the level of the connecting link (Fig. 1, at "B") after
completion of pressing. Do not use damaged or worn pressing tongs again.
If in doubt, return the drive unit together with all pressing tongs to an
authorised BERNER after-sales service facility for inspection.
4.1.2. Radial presses
Keep the press tongs receptacle clean, in particular clean the press rol-
lers (5) and tongs shank (2) at regular intervals and then lubricate them
with machine oil. Check the functional reliability of the drive unit regularly
by making a pressing with the largest press fitting used. If the pressing
tongs close completely during this pressing operation (see above), the
drive unit is functionally reliable.
The BERNER Mini-Press ACC and BERNER MULTI-Press ACC is fitted
with an electronic servicing feature. After about 10,000 pressing operati-
ons, the diode on the pistol grip (9) starts to flash. An inspection is then
due. This is performed by an autho rised BERNER after-sales service fa-
cility.
4.2. Inspection/repair
Before any repair work, pull the mains plug or remove the battery. This
work may only be performed by authorised experts or by trained per -
sonnel.
After around 10,000 pressing/expanding operations, but at least once a
year, inspection of the pressing/expanding tool to an authorised BERNER
after-sales service facility is necessary.
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