Safety instructions

from Liebherr R 9200 E 1409 Hydraulic Excavator Operating Manual 40022 - PDF DOWNLOAD

5Maintenance

s before you have set aside the equipment, switched off the engine and depressurized the hydraulic system. After switching off the engine, with the start key in contact position and with the safety lever down into its lowest position, you must operate all pilot control devices (joystick and pedals) in all directions in order to reduce the actuating and dynamic pressures in the work circuits. You must then reduce the internal tank pressure as described in these operating instructions.

Electrical system

Have all faults, such as loose connections, blown fuses and lamps and clogged or abraded cables rectified by personnel.

e event of malfunctions in the power supply.

trical equipment may only be carried out by skilled electrical personnel or by trained personnel under the supervision of an electrician in accordance with electrical regulations.

a second person is available to operate the emergency-off or the main switch and overvoltage release. Cordon off the working area with a red and white safety chain and a warning sign. Only use insulated tools.

voltage, briefly disconnect the supply cable at earth and electronic devices such as capacitors using an earthing rod.

that they are off circuit, earth them and then disconnect them briefly. Insulate adjacent live parts.

electric arc welding on the machine. First disconnect the negative, then the positive pole. When reconnecting, proceed in the reverse order.

Hydraulic accumulator

personnel.

lic accumulators can cause serious accidents.

hydraulic system (hydraulic system including hydraulic tank), as described in these operating instructions. accumulator.

The hydraulic accumulator can be damaged by heat penetration and can be made to rupture by mechanical working. RISK OF EXPLOSION!

SION if oxygen or air is used.

purpose of use before installation.

on hydraulic accumulators. Ensure that this marking remains visible.

Hydraulic lines and hoses

be checked regularly for externally visible damage and any possible damage must be immediately checked for leakage. else.

ately! Spurting oil can lead to injury and burns.

natural aging process. This restricts their duration of use.

common causes of failure.

t norms, regulations and guidelines pertaining to lines and hoses at place of use must be adhered to. ad can shorten duration of use (e.g. high temperatures, frequent movement cycles, extremely high pulse frequencies, multiple shift usage).

cture formation in hose material); the natural form of the line or hose, whether in a unpressurized or pressurized state or on bends e.g. sheath separation, blistering; fittings or the hose / fitting connection; reduces function and tightness; pressure hoses, the screws from the half-clamps or full flange must always be attached to both hose ends and should only be tightened afterwards. ssure lines and hoses with bent fittings, the side with the bent fitting must always be tightened first and then the side with the straight fitting tightened afterwards. attached and tightened subsequently. covers and protective devices are properly fastened. Doing this will prevent vibration and damage during operation. hoses or parts. prox. half the exterior diameter of the hose is recommended. The distance should not, however, be less than 10 to 15mm. stick), check before initial start-up that there are no chafing areas in the entire area of movement.

Disposal

Disposal of the machine after the service life in accordance with all applicable national, regional or local regulations for waste disposal and environmental protection.

Disposal of gas tanks and pressurized tanks tank manufacturer for disposal.

Disposal of fuel, lubricants, operating fluids and consumables ting fluids in applicable containers before disposal. disposed of in an applicable recycling point. trained air-conditioning and refrigeration technician. ts and operating fluids manufacturer for disposal.

2.5Safety information for electrical system

regulation in the manual issued by the supplier of the electrical box installation.

opened, serviced or repaired, it can be done only by authorized and qualified personnel! All local laws and requirements must be strictly adhered to.

plant must ensure their own safety and the safety of other persons working on the machine by locking the machine out the duty of the responsible of the excavaof all people adequate tools and adapted safe work procedures.

repair/maintenance job on electric system to avoid electrical shocks: local electric regulations. machine. trician supervisor.

ke a power lock and tag out according to all local electric requirements and procedures.

event injuries caused by the presence of voltage, and by the machine starting up or moving unexpectedly. These procedures must be followed every time a machine is going to be cleaned, maintained, or repaired.

ectrical box / leakage in hydraulic rotary connection, replacing tracks or making repairs, or any other maintenance task on electric plant or at proximity, safe and effective lockout practices will protect your life. Always follow the exact procedure for the voltage level you are working on and do not take chances!

cedures. This will protect their life.

Danger!

High voltage is still present on the excavator up to the main breaker 6kV when the machine is in standby by pushing button 6kV OFF from the cab. ALL ELECTRIC WIRES AND BOXES mounted on upper/undercarriage must be considered under voltage.

To disconnect totally the excavator, proceed with a lock and tag out procedure at the power station as follows: Locate power station supply and distribution. Stop excavator, disconnect excavator from the network at field switch. Check voltage presence on excavator supply line. Earth and short-cut the supply line. Lockout and tag out at field switch.

Open the connection box of the supply cable installation and use the lever on the inside to earth the uppercarriage. Close the connection box and keep the key in a safe place.

Always use adapted tools suitable for the voltage.

Workplaces should have a written lockout procedure for each machine, depending on your country, outlining:

A Safe Work Procedure has been developed by Liebherr-Mining Equipment

Colmar SAS for its electrician personnel working on electric plant of an electric machine. This document is available in the Service Manual for information and must be adapted to your local electric regulations and procedures.

Some electric components (such as high voltage supply cable, transformers, motor windings...) store some residual electric power. Before working on electric circuit including such components, you must discharge these components to the earth.

Concerning work with voltage on electric system, Liebherr-Mining Equipment Colmar SAS recommends to lock and tag out (power OFF) at the supply station or at the field switch in case of any maintenance or work on electric risks areas. People must be trained and certified from their employer according to the electrical local regulations.

Safety instructions

Safety guidelines to connect and start-up this electric machine

Danger!

Never cross the extern limit distance of Danger Area with any tools or any body parts. The approach area can only be considered as the working area, in order to measure the voltage or check voltage presence. The area must be roped and tagged. Parts under voltage should be protected to avoid any electrifying.

The following figure illustrates the danger area A and the approach area B around aries DL and DV). Always observe local regulations concerning these areas according to the country you are working in.

Any job/maintenance at proximity of voltage must be done with all safety requirements presented in this ma

THERE ARE NO SHORT CUTS IN SAFETY!

2.6Safety guidelines to connect and start-up this electric machine

When connecting this machine to an electrical power source, as well as during the initial start-up, the following instructions and safety guidelines must be adhered to : all pertaining local, state and national standards, safety guideline, rules and regulations (such as ANSI, CIMA, DIN, IEC, INRS, ISO, NEC, NEMA, NF, OSHA, SAE, UL, VBG, VDE, EN, UTE, etc...) must be adhered to at all times. stallation, particularly connecting the machine to an outside power source and the start-up procedure must be performed by a qualified and certified personnel. operly protected against over-voltage and excessive current draw, short circuits and faulty ground. be switched off at the first fault (insulation, overcurrent, overload or ground fault) and this fault must be solved. m or component damage, the supply voltage of all three phase conductors must be nearly the same (equal). wire must be of sufficient gauge (cross

Signs on the machine section). cured and all fasteners and contacts must be clean and properly connected. ape and in good condition. Under voltage, they have to be carried with insulated gloves 6kV. moved. Immediately replace illegible, damaged or missing safety signs and decals.

These signs warn of electrical hazards. Proper precautions, attention and procedures are required to prevent accidental injury or death.

DANGER HIGH VOLTAGE

DANGER SUPPLY LINES FROM BELLOW ARE UNDER VOLTAGE

Never touch any electrical component under voltage. Always disconnect the main power source (circuit) before commencing with repairs.

2.7Signs on the machine

2.7.1Introduction

The excavator comprises several types of signs: the safety plates provide warnings relating to dangers of accidents which could result in serious injury or death. the information plates indicate specific points relating to the operation, maintenance and characteristics of the machine. the nameplates are attached to components for which the machine serial number must be provided when ordering spare parts.

Danger!

Non-observance of safety plates can result in serious injury or death. Check warning plates regularly to ensure that they are complete and clearly legible.

Replace missing or illegible safety and information plates immediately. You will find the ordering numbers of these plates in the spare parts book of the excavator.