Atlas Copco QAS 250-330 JD T4i, Instruction Manual, Page: 8 / 76

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Safety during use and operation
1 When the unit has to operate in a fire-hazardous
environment, each engine exhaust has to be provided
with a spark arrestor to trap incendiary sparks.
2 The exhaust contains carbon monoxide which is a
lethal gas. When the unit is used in a confined space,
conduct the engine exhaust to the outside atmosphere
by a pipe of sufficient diameter; do this in such a way
that no extra back pressure is created for the engine. If
necessary, install an extractor. Observe any existing
local regulations.
Make sure that the unit has sufficient air intake for
operation. If necessary, install extra air intake ducts.
3 When operating in a dust-laden atmosphere, place the
unit so that dust is not carried towards it by the wind.
Operation in clean surroundings considerably extends
the intervals for cleaning the air intake filters and the
cores of the coolers.
4 Never remove a filler cap of the cooling water system
of a hot engine. Wait until the engine has sufficiently
cooled down.
5 Never refill fuel while the unit is running, unless
otherwise stated in the Atlas Copco Instruction Book
(AIB). Keep fuel away from hot parts such as air
outlet pipes or the engine exhaust. Do not smoke
when fuelling. When fuelling from an automatic
pump, an earthing cable should be connected to the
unit to discharge static electricity. Never spill nor
leave oil, fuel, coolant or cleansing agent in or around
the unit.
6 All doors shall be shut during operation so as not to
disturb the cooling air flow inside the bodywork and/
or render the silencing less effective. A door should
be kept open for a short period only e.g. for inspection
or adjustment.
7 Periodically carry out maintenance works according
to the maintenance schedule.
8 Stationary housing guards are provided on all rotating
or reciprocating parts not otherwise protected and
which may be hazardous to personnel. Machinery
shall never be put into operation, when such guards
have been removed, before the guards are securely
reinstalled.
9 Noise, even at reasonable levels, can cause irritation
and disturbance which, over a long period of time,
may cause severe injuries to the nervous system of
human beings.
When the sound pressure level, at any point where
personnel normally has to attend, is:
- below 70 dB(A): no action needs to be taken,
- above 70 dB(A): noise-protective devices should be
provided for people continuously being present in the
room,
- below 85 dB(A): no action needs to be taken for
occasional visitors staying a limited time only,
- above 85 dB(A): room to be classified as a noise-
hazardous area and an obvious warning shall be placed
permanently at each entrance to alert people entering
the room, for even relatively short times, about the
need to wear ear protectors,
- above 95 dB(A): the warning(s) at the entrance(s) shall
be completed with the recommendation that also
occasional visitors shall wear ear protectors,
- above 105 dB(A): special ear protectors that are
adequate for this noise level and the spectral
composition of the noise shall be provided and a
special warning to that effect shall be placed at each
entrance.
10 Insulation or safety guards of parts the temperature of
which can be in excess of 80°C (175°F) and which
may be accidentally touched by personnel shall not be
removed before the parts have cooled to room
temperature.
11 Never operate the unit in surroundings where there is
a possibility of taking in flammable or toxic fumes.
12 If the working process produces fumes, dust or
vibration hazards, etc., take the necessary steps to
eliminate the risk of personnel injury.
13 When using compressed air or inert gas to clean down
equipment, do so with caution and use the appropriate
protection, at least safety glasses, for the operator as
well as for any bystander. Do not apply compressed
air or inert gas to your skin or direct an air or gas
stream at people. Never use it to clean dirt from your
clothes.
14 When washing parts in or with a cleaning solvent,
provide the required ventilation and use appropriate
protection such as a breathing filter, safety glasses,
rubber apron and gloves, etc.
15 Safety shoes should be compulsory in any workshop
and if there is a risk, however small, of falling objects,
wearing of a safety helmet should be included.
16 If there is a risk of inhaling hazardous gases, fumes or
dust, the respiratory organs must be protected and
depending on the nature of the hazard, so must the
eyes and skin.
17 Remember that where there is visible dust, the finer,
invisible particles will almost certainly be present too;
but the fact that no dust can be seen is not a reliable
indication that dangerous, invisible dust is not present
in the air.
18 Never operate the generator in excess of its limits as
indicated in the technical specifications and avoid
long no-load sequences.
19 Never operate the generator in a humid atmosphere.
Excessive moisture causes worsening of the generator
insulation.
20 Do not open electrical cabinets, cubicles or other
equipment while voltage is supplied. If such cannot be
avoided, e.g. for measurements, tests or adjustments,
have the action carried out by a qualified electrician
only, with appropriate tools, and ascertain that the
required bodily protection against electrical hazards is
applied.
21 Never touch the power terminals during operation of
the machine.
22 Whenever an abnormal condition arises, e.g.
excessive vibration, noise, odour, etc., switch the
circuit breakers to OFF and stop the engine. Correct
the faulty condition before restarting.
23 Check the electric cables regularly. Damaged cables
and insufficient tightening of connections may cause
electric shocks. Whenever damaged wires or
dangerous conditions are observed, switch the circuit
breakers to OFF and stop the engine. Replace the
damaged wires or correct the dangerous condition