Check the electrical system regularly. Make sure that any problems, such as loose connections, burnt out fuses and bulbs, scorched or chafed cables are fixed immediately by an electrician or qualified personnel. Hoses and lines must be replaced if any of the following points are found during an inspection (see guidelines ISO 8331): Damage on the external layer into the inner layer (such as chaffing, cuts and rips); Use only Original fuses with the specified amperage. Never use a different size or stronger fuse than the original fuse.
Brittleness of the outer layer (crack formation of the hose material); Changes in shape, which differ from the natural shape of the hose or line, when under pressure or when not under pressure, or in bends or curves, such as separation of layers, blister or bubble formation, crushing or pliers. On machines with electrical medium or high voltage systems: If there is any problem with the electrical energy supply, turn the machine off immediately. Leaks; Non observance of installation requirements; Follow established lockout / tag out procedures where applicable.
Damage or deformation of hose fittings, which might reduce the strength of the fitting or the connection between hose and fitting; Any work on the electrical system may only be performed by a qualified electrician or qualified personnel under the guidance and supervision of an electrician, according to electro - technical regulations. Corrosion on fittings, which might reduce the function or the strength of the fitting; When replacing hoses or lines, always use Original replacement parts. Any movement of hose away from the fitting; If any work is required on any parts which carry current, use a second person to turn off the main battery switch, if necessary.
Rope the work area off with a safety rope or chain, and set up warning signs. Use only insulated tools. Route or install the hoses and lines properly. Do not mix up the connections! Always take care to avoid torsional strain when installing a new hose. On high pressure hydraulic hoses, the mounting screws must be first mounted on both hose ends (full flange or half clamp) and tightened only thereafter. On high pressure hoses having one curved end, always tighten first the screws on the curved hose end and only then the screws on the straight hose end. Install and tighten the hose clips that may be mounted on the hose middle only when the both hose ends are already tightened.
When working on medium and high voltage components, shut off the voltage and connect the supply cable to the ground and ground the components, such as the condenser, with a grounding rod. Check all disconnected parts if they are truly free of current, ground them and close them off quickly. Insulate any close-by, current carrying parts. HYDRAULIC LINES AND HOSES Hydraulic lines and hoses may never be repaired! All hoses, lines and fittings must be checked daily, but at least every 2 weeks for leaks and any externally visible damage! Never check for leaks with your bare hands, use a sheet of paper or something else. Any damaged sections must be replaced immediately!
Escaping oil can cause injuries and fires! Always install hoses so to avoid any friction with other hoses and parts. We recommend to keep a distance between hose and other parts of at least one half of the hose outer diameter. Keep a minimum gap of 1/2 inch in any case. After mounting a hose connecting two parts that are movable to each other, check during the return to service that the hose is not rubbing in the whole moving range. Check daily that all flanges and covers are fixed correctly. It will prevent vibrations and damage during operation. Even if hoses and lines are stored and used properly, they undergo a natural aging process. For that reason, their service life is limited.
Improper storage, mechanical damage and improper use are the most frequent causes of hose failures. Concerning the hoses, you must follow the safety regulations applicable to your work environment and job site and any federal, state and local safety requirements. Using hoses and lines close to the limit ranges of permitted use can shorten the service life (for example at high temperatures, frequent working cycles, extremely high impulse frequencies, multi shift or around the clock operations). 2.10