Hydraulic systems and hydraulic articles Handling
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1 Scope Thisspecification is to be used for hydraulic articles whenever the manufacturingdocument refers to this specification.
2 Manufacture| 2. 1 | The initial material shall be free from defects such as moulding sand, burrs, etc., wich can affect the further machining and function and cleanness of the finished article. | | | | 2.2 | After machining the parts shall be cleaned so that no swarf or loose particles remain-this especially applies to channels and cramped spaces. | | | | 2.3 | Before welding, hardening or other heating the parts shall be entirely free from oil and grease since this can create carbon wich is difficult to remove. | | | | 2.4 | After welding, hardening or other heating the parts shall be cleaned so that even channels and cramped spaces are clean. | | | | 2.5 | After painting and other surface treatment the parts shall be cleaned so that loose remnants of surface treatment and unintentional surface treatment are removed. Surfaces with high surface finish and with sharp corners shall be inspected carefully. | | | | 2.6 | Finished machined parts shall be rinsed and blown clean with dry (filtered) air, treated against rust with the prescribed rust inhibitant and protected from contamination, e.g. by means of plastic plugs. | | |
3 Assembly| 3.1 | Assembly shall only take place in a clean, dry enviroment. | | | | 3.2 | Tools, clothes and hands shall be kept clean. |
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| | 3.3 | When drying components, drying cloths which do not give off fluff shall be used. Under no circumstances may twist be used. | | | | | 3.4 | If an assembled component is not installed immediately after assembly all ports shall be plugged and the component packed in, for example, a plastic bag. |
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4 Transports| 4. 1 | During transports of hydraulic articles measures shall be taken to ensure that articles are protected from mechanical damage, moisture and contamination. |
| | | 4.2 | Requirements for protective packing shall be forseen. |
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| | 4.3 | Articles in their packing shall be treated carefully so that no damage or contamination arises. |
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5 Storage| 5. 1 | It is forbidden to store hydraulic articles out of doors, in cold storage or in dusty premises. Articles shall be placed in suitable packing. |
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6 Handlingof hydraulic oil| 6. 1 | Oil filling of the Hydraulic Power Unit shall preferably be made by means of a pump unit equipped with a full flow filter with a filtration grade of 10μm or better. |
| | 6.2 | Oil filling of the Hydraulic Power Unit may only be made through the oil filling connection, i.e. through the return oil filter. |
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