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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 betaken 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
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 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.
13 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.
14 Protect the engine, alternator, air intake filter, electrical
and regulating components, etc., to prevent moisture
ingress, e.g. when steam-cleaning.
15 When performing any operation involving heat, flames
or sparks on a machine, the surrounding components
shall first be screened with non-flammable material.
16 Never use a light source with open flame for inspecting
the interior of a machine.
17 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 switchgear, to check that the oil pump and the fan
function properly.
18 Maintenance and repair work should be recorded in an
operator's logbook for all machinery. Frequency and
nature of repairs can reveal unsafe conditions.
19 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.
20 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.
21 Make sure that oil, solvents and other substances likely
to pollute the environment are properly disposed of.
22 Before clearing the unit for use after maintenance or
overhaul, check that operating pressures, temperatures
and speeds are correct and that the control and
shutdown devices function correctly. Submit the
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generator to a test run, check that the AC power
performance is correct.
TOOL APPLICATIONS SAFETY
Apply the proper tool for each job. With the knowledge of
correct tool use and knowing the limitations of tools,
along with some common sense, many accidents can be
prevented. Special service tools are available for specific
jobs and should be used when recommended. The use of
these tools will save time and prevent damage to parts.
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