Suction oil filter is clogged with dirt or its capacity is too small, resulting in increased suction resistance and inhalation of air; In addition, the larger diameter of the inlet and outlet may also be brought into the air. At this point, you can clean the filter, or choose a larger capacity, and out of the appropriate diameter filter. The heat transfer oil pump not only can prevent the inhalation of air, but also prevent noise.
Heat transfer oil pump installation location is too high from the oil, especially in the pump speed is reduced, because the pump can not guarantee the necessary degree of vacuum caused by vacuum suction caused by insufficient air intake. Changzhou Wujin first hot oil pump should be adjusted at this time the relative height of the pump and oil to meet the requirements delineated.
The fuel tank is not enough fuel, or suction pipe nozzle is not inserted below the oil surface, the pump will inhale the air, this time should be added to the fuel tank to the oil line; if the oil return pipe port exposed oil, and sometimes because of the system Negative pressure within the instantaneous air back into the system, so return pipe mouth generally should be inserted below the oil level.
Heat pump oil pump body and both sides of the cover for direct contact with the hard seal, if the contact surface flatness does not meet the requirements of the delineation, the pump easily inhaled air at work; Changzhou Wujin the first hot oil pump Similarly, the pump Also direct contact between the end cap and the gland, the air is also easy to invade; gland if the plastic, because of its damage or deformation due to temperature changes, will make the seal lax and into the air. To eliminate this failure is: When the pump body or pump flatness can not meet the requirements of the delineation, you can use the sand plate on the shape of the route back and forth grinding, you can also grind on the surface grinder so that The flatness does not exceed 5μm, and the need to ensure the verticality of the plane and the hole requirements; for the pump cover and gland at the leak, can be coated with epoxy resin adhesive seal.
Heat pump oil pump shaft is generally used to seal the oil seal. If the locking lip spring off, or anti-oil seal, or its lips were injured, aging, will make the back end of the seal often in negative pressure and inhalation of air, the general can replace the new seal to be resolved.
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