Thermal pumps common troubleshooting approach

Heat pump in use there will be some problems, then in the event of a problem, we must promptly analyze it, testing and maintenance, in order to ensure the use of heat transfer oil pump can really play its role and its own value. Then the heat pump often appear the following problems
1, if the heat-conducting oil pump is easy to inhale air at work, it may be that the pump body of the heat-conducting oil pump directly touches the hard seal on both end caps, so the flatness of the contact surface does not meet the requirements; if it is between the end cap and the gland Direct contact, the air is also easy to enter; but when the lid is made of plastic material, will be prone to high temperature damage and deformation, of course, the air will enter.
2, the height of the heat transfer oil pump and the oil surface to adapt to the pump when installed not from the oil surface is too high, especially in the case of low pump speed, mainly to ensure that not easy to inhale the air, so be sure to meet the requirements 3 , Less than the amount of oil in the mailbox, or the oil nozzle is not inserted below the oil surface, the pump will inhale the air, then you can add oil to the fuel tank to the oil standard line; if the oil return port exposed oil, and sometimes Due to the instantaneous negative pressure in the system and the air back into the system, so the return pipe nozzle should generally be inserted below the oil level.
4, the use of skeleton seal seal, if the chuck lip spring off, or seal the oil seal, or its lips were injured, aging, will make the back end of the seal often in negative pressure and inhale the air, the general Can be replaced by a new oil seal to be resolved.
5, cleaning the filter, select a larger capacity, and access to the appropriate diameter of the oil filter, because the oil filter is clogged with dirt or its capacity is too small, resulting in increased suction resistance and inhalation of air; In addition, into the oil Larger caliber may also bring into the air.
Solve the thermal oil pump fault method: If the pump body or pump cover flatness less than the required requirements, you can grind in a flat grinder, the flatness of not more than 5μm, and the need to ensure that the plane and hole perpendicularity Requirements; At the same time can also grind on the surface grinding machine, so that its flatness does not exceed 5μm; If it is leaked, can be coated with epoxy resin adhesive seal. In the use of heat transfer oil pump must be the main points, in order to Get higher efficiency, we must pay attention.

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