10
Electric energy
Use only original fuses with the specified current ra-
ting. Switch off the machine/unit immediately if trouble
occurs in the electric system.
Work on the electrical system or equipment may only
be carried out by a skilled electrician or by specially
instructed personnel under the control and supervision
of such an electrician and in line with the relevant elec-
trical engineering rules.
If regulations require, the power supply to parts of
machines and plants, on which inspection, mainte-
nance and repair work is to be carried out, must be cut
off. Before starting any work, check the de-energized
parts for the presence of power and ground or short-
circuit them in addition to insulating adjacent live parts
and elements.
The electrical equipment of the machines/units is to
be inspected and checked at regular intervals. Defects
such as loose connections or scorched cables must be
rectified immediately.
Necessary work on live parts and elements must be
carried out in the presence of a second person who
can cut off the power supply in case of danger by ope-
rating the emergency shutdown or main power switch.
Secure the working area with a red-and-white safety
chain and a warning sign. Use insulated tools only.
Before starting work on high-voltage assemblies and
after having cut out the power supply, the feeder cable
must be grounded, and components, such as capaci-
tors, short-circuited with a grounding rod.
3.6 Warning of special dangers
Gas, dust, steam and smoke
Carry out welding, flame-cutting and grinding work on
the machine/unit only if this has been expressly autho-
rized, as there may be a risk of explosion and fire.
Before carrying out welding, flame-cutting and grind-
ing operations, clean the machine/unit and its sur-
roundings from dust and other inflammable substances
and make sure that the premises are adequately venti-
lated (risk of explosion) !
Adhere to the regulations valid for the place of opera-
tion !
Observe any existing national regulations if work is to
be carried out in small rooms.
Hydraulics, pneumatics
Work on hydraulic equipment may only be carried out
by persons with special knowledge and experience of
hydraulics.
Check all lines, hoses and screwed connections reg-
ularly for leaks and obvious damage. Repair damage
immediately. High pressure jets of oil may cause injury
and fire.
Depressurize all system sections and pressure pipes
(hydraulic system, compressed-air system) which are to
be removed in accordance with the specific instructions
3. Safety regulations
ously touched by the personnel, must not be removed
before these parts have cooled down to room tempera-
ture.
Check the accuracy of pressure and temperature indi-
cators at regular intervals. If the admissible tolerance li-
mits have been exceeded, these devices have to be re-
placed.
Before removing or overhauling a compressor, a mo-
tor or another machine, ensure that all moveable parts
of a mass of more than 15 kg cannot move or roll away.
After completion of repair work, always verify that no
tools, loose parts or cloths have been left in or on the
machine, drive motor or drive equipment. Machines
performing a back and forward main movement have to
be cycled at least once, rotating machines have to be
cycled several times in order to ensure that there are
no mechanical faults in the machine or the drive mem-
ber. Check the direction of rotation of the electric mo-
tors during first commissioning and after each modifica-
tion of the electrical connections in order to prevent the
compressor from being damaged.
The fastening of loads and the instructing of crane
operators should be entrusted to experienced persons
only. The person giving the instructions must be within
sight or voice contact with the operator.
For carrying out overhead assembly work always use
specially designed or otherwise safety-orientated lad-
ders and working platforms. Never use machine parts
as a climbing aid. Wear a safety harness when carrying
out maintenance work at greater heights.
Keep all steps, handles, handrails, platforms, lan-
dings and ladders free from dirt, snow and ice !
Clean the machine, especially connections and
threaded unions, of any traces of oil, fuel or pre-
servatives before carrying out maintenance or repair
work ! Never use aggressive detergents ! Use lint-free
cleaning rags !
Before cleaning the machine with water or steam jet
(high pressure cleaner) or other cleaning agents, co-
ver/mask all openings which have to be protected from
the ingress of water, steam or detergents for safety and/
or functional reasons, in particular electric motors and
switch cabinets.
After cleaning, remove the covers/masking complete-
ly !
Check all hydraulic oil lines for leakage, loose fittings,
abrasion and damage after cleaning. Any defect must
be rectified immediately !
Always re-tighten screwed connections which have
been loosened for maintenance and repair work.
If the set-up, maintenance or repair require the de-
mounting of safety equipment, this equipment has to be
remounted and checked immediately after these activi-
ties.
Ensure that consumables and replacement parts are
disposed of in a safe and environmentally friendly man-
ner.
