Safety During Maintenance And Repair - Atlas Copco XAS 400 JD IT4 HOP Instruction Manual

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.
18 The unit has parts, which may be accidentally touched
by personnel, of which the temperature can be in exess
of 80 °C (176 °F). The insulation or safety guard,
protecting these parts shall not be removed before the
parts have cooled down to room temperature.
19 Never operate the unit in surroundings where there is a
possibility of taking in flammable or toxic fumes.
20 If the working process produces fumes, dust or
vibration hazards, etc., take the necessary steps to
eliminate the risk of personnel injury.
21 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.
22 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.
23 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.
24 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.
25 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.
26 Never operate the unit at pressures or speeds below or
in excess of its limits as indicated in the technical
specifications.
27 Do not use aerosol types of starting aids such as ether.
Such use could result in an explosion and personal
injury.
SAFETY DURING MAINTENANCE AND
REPAIR
Maintenance, overhaul and repair work shall only be
carried out by adequately trained personnel; if required,
under supervision of someone qualified for the job.
1 Use only the correct tools for maintenance and repair
work, and only tools which are in good condition.
2 Parts shall only be replaced by genuine Atlas copco
replacement parts.
3 All maintenance work, other than routine attention,
shall only be undertaken when the unit is stopped.
Steps shall be taken to prevent inadvertent starting. In
addition, a warning sign bearing a legend such as
"work in progress; do not start" shall be attached to the
starting equipment. On engine-driven units the battery
shall be disconnected and removed or the terminals
covered by insulating caps. On electrically driven units
the main switch shall be locked in open position and
the fuses shall be taken out. A warning sign bearing a
legend such as "work in progress; do not supply
voltage" shall be attached to the fuse box or main
switch.
4 Before dismantling any pressurized component, the
compressor or equipment shall be effectively isolated
from all sources of pressure and the entire system shall
be relieved of pressure. Do not rely on non-return
valves (check valves) to isolate pressure systems. In
addition, a warning sign bearing a legend such as
"work in progress; do not open" shall be attached to
each of the outlet valves.
5 Prior to stripping an engine or other machine or
undertaking major overhaul on it, prevent all movable
parts from rolling over or moving.
6 Make sure that no tools, loose parts or rags are left in
or on the machine. Never leave rags or loose clothing
near the engine air intake.
7 Never use flammable solvents for cleaning (fire-risk).
8 Take safety precautions against toxic vapours of
cleaning liquids.
9 Never use machine parts as a climbing aid.
10 Observe scrupulous cleanliness during maintenance
and repair. Keep away dirt, cover the parts and exposed
openings with a clean cloth, paper or tape.
11 Never weld on or perform any operation involving heat
near the fuel or oil systems. Fuel and oil tanks must be
completely purged, e.g. by steam-cleaning, before
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carrying out such operations. Never weld on, or in any
way modify, pressure vessels. Disconnect the
alternator cables during arc welding on the unit.
12 Support the towbar and the axle(s) securely if working
underneath the unit or when removing a wheel. Do not
rely on jacks.
13 Do not remove any of, or tamper with, the sound-
damping material. Keep the material free of dirt and
liquids such as fuel, oil and cleansing agents. If any
sound-damping material is damaged, replace it to
prevent the sound pressure level from increasing.
14 Use only lubricating oils and greases recommended or
approved by Atlas copco or the machine manufacturer.
Ascertain that the selected lubricants comply with all
applicable safety regulations, especially with regard to
explosion or fire-risk and the possibility of
decomposition or generation of hazardous gases.
Never mix synthetic with mineral oil.
15 Protect the engine, alternator, air intake filter, electrical
and regulating components, etc., to prevent moisture
ingress, e.g. when steam-cleaning.
16 When performing any operation involving heat, flames
or sparks on a machine, the surrounding components
shall first be screened with non-flammable material.
17 Never use a light source with open flame for inspecting
the interior of a machine.
18 Disconnect –battery-clamp before starting electrical
servicing or welding (or turn battery-switch in "off"
position).
19 When repair has been completed, the machine shall be
barred over at least one revolution for reciprocating
machines, several revolutions for rotary ones to ensure
that there is no mechanical interference within the
machine or driver. Check the direction of rotation of
electric motors when starting up the machine initially
and after any alteration to the electrical connection(s)
or switch gear, to check that the oil pump and the fan
function properly.
20 Maintenance and repair work should be recorded in an
operator's logbook for all machinery. Frequency and
nature of repairs can reveal unsafe conditions.
21 When hot parts have to be handled, e.g. shrink fitting,
special heat-resistant gloves shall be used and, if
required, other body protection shall be applied.
22 When using cartridge type breathing filter equipment,
ascertain that the correct type of cartridge is used and
that its useful service life is not surpassed.