Ð Safety During Use And Operation; Ð Safety During Maintenance And Repair - Atlas Copco XA186 Dd Instruction Manual

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AFETY DURING USE AND OPERATION
To lift a unit, all loose or pivoting parts, e.g. doors and drawbar, shall first be
securely fastened. Do not attach cables, chains or ropes directly to the lifting
eye; apply a crane hook or lifting shackle meeting local safety rules.
Helicopterlifting using the lifting eye is forbidden.
It is strictly forbidden to dwell or stay in the risk zone under a lifted load.
Never lift the unit over people or residential areas.
Lifting acceleration and retardation shall be kept within safe limits.
1 Before towing the unit:
Ð ascertain that the pressure vessel(s) is (are) depressurized,
Ð check the drawbar, the brake system and the towing eye. Also check
the coupling of the towing vehicle,
Ð check that the pivot wheel or stand leg is safely locked in the raised
position,
Ð ascertain that the towing eye can swivel freely on the hook,
Ð check that the wheels are secure and that the tyres are in good
condition and inflated correctly,
Ð connect the signalisation cable, check all lights and connect the
pneumatic brake couplers,
Ð attach the safety break-away cable to the towing vehicle,
Ð remove wheel chocks, if applied, and disengage the parking brake.
2 If the unit is to be backed up by the towing vehicle, disengage the overrun
brake mechanism.
3 Never exceed the maximum towing speed of the unit.
4 Place the unit on level ground and apply the parking brake before
disconnecting the unit from the towing vehicle. Unclip the safety break-
away cable. If the unit has no parking brake the support of the towbar
partly acts as a brake; it is recommended to immobilize the unit by
placing chocks before or behind the wheels.
When the towbar can be positioned vertically, the locking device must be
applied and kept in good order.
5 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.
6 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 (min. 100 mm); do this in
such a way that no extra back pressure is created for the engine. If
necessary, install an extractor.
7 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.
8 Locate the unit away from walls. Take all precautions to ensure that hot
air exhausted from the engine and driven machine cooling systems cannot
be re-circulated. If such hot air is taken in by the engine or driven
machine cooling fan, this may cause overheating of the unit; if taken in
for combustion, the engine power will be reduced.
9 No external force may be exerted on the air outlet valves, e.g. by pulling
on hoses or by installing auxiliary equipment directly to a valve, e.g. a
water separator, a lubricator, etc.
10 Distribution pipework and air hoses must be of correct size and suitable
for the working pressure. Never use frayed, damaged or deteriorated
hoses. Replace hoses and flexibles of which the lifetime expired. Use only
the correct type and size of hose end fittings and connections.
A hose connected to a 2 inch (50 mm) valve must be provided with a
safety wire (¯ 8 mm) fixed to the hose (each 500 mm) for effective
pressures as from 10 bar (145 psi) up, although it is recommended to
apply such safeguard already from 4 bar (60 psi) up. The safety wire ends
have to be attached, one to the eye provided next to the compressor air
outlet valve, the other one to a point near to the air inlet of the applied
equipment.
Finally a wire mesh hose can be fixed over the hose ends to dampen the
blast in case a connection starts leaking or should become undone.
Close the compressor air outlet valve before connecting or disconnecting
a hose. Ascertain that a hose is fully depressurized before disconnecting
it.
When blowing through a hose or air line, ensure that the open end is held
securely. A free end will whip and may cause injury.
6
Never play with compressed air. Never apply it to your skin or direct an
air stream at people. Never use it to clean dirt from your clothes. When
using it to clean down equipment, do so with extreme caution and use eye
protection.
Do not use compressed air from any type of compressor, without taking
extra measures, for breathing purposes as this may result in injury or
death. For breathing air quality, the compressed air must be adequately
purified according to local legislation and standards.
Breathing air must always be supplied at stable, suitable pressure.
11 Never move a unit when external lines or hoses are connected to the
outlet valves, to avoid damage to valves and/or manifold and hoses.
12 Never refill fuel while the unit is running. 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.
13 Never operate the unit in surroundings where there is a possibility of
taking in flammable or toxic fumes.
14 Never operate the unit at pressures or speeds below or in excess of the
limit ratings stated on the Principal Data sheet.
15 On water-cooled engines with closed cooling circuit: allow the unit to
cool before removing a pressure cap.
16 All doors shall be shut during operation so as not to disturb the cooling air
flow inside the body-work and/or render the silencing less effective. A
door should be kept open for a short period only, e.g. for inspection or
adjustment.
17 Wear ear protectors when environmental noise can reach or exceed 90
dB(A). Beware of long-time exposure to noise.
18 Periodically check that:
Ð all safety equipment is in good working order,
Ð all guards and air conducting baffles are in place and securely
fastened,
Ð all hoses and/or pipes inside the unit are in good condition, secure and
not rubbing,
Ð there are no fuel, oil or coolant leaks,
Ð the tension of drive belts is correct,
Ð all fasteners are tight,
Ð all electrical leads are secure and in good order,
Ð the engine exhaust system is in good condition,
Ð air outlet valves and manifold, hoses, couplings, etc. are in good
repair, free of wear or abuse,
Ð the wheel nuts are tightened to the proper torque.
When more than one compressor is connected to a common header, be sure
each compressor has a non-return valve (check valve) to prevent reverse
rotation when stopping.
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AFETY DURING MAINTENANCE AND REPAIR
Maintenance 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.
2 Use only genuine spare parts.
3 All maintenance work, other than routine attention, shall only be
undertaken when the unit is stopped. Ensure that the unit cannot be started
inadvertently.
4 Before removing any pressurized component, effectively isolate the
compressor from all sources of pressure and relieve the entire system of
pressure. Do not rely on non-return valves (check valves) to isolate
pressure systems.
5 Never use flammable solvents or carbon tetrachloride for cleaning parts.
Take safety precautions against toxic vapours of cleaning liquids.
6 Scrupulously observe cleanliness during maintenance and when
performing repairs. Keep dirt away by covering the parts and exposed
openings with a clean cloth, paper or tape.
7 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.