1, because the heat pump pump body running at high temperatures, so when the cold device pipe should be set Hinge seat, to prevent the displacement pipe after warming. 2, the coupling must be heat pump heat pump after the heat is correct, to prevent the formation of additional torque operation. 3, Insulation pump outlet pressure measuring point to set the interlock stop alarm, otherwise, once the discharge pipe blocked, easy to form the pump body damage. 4, insulation pump start, no pressure in the export composition, can not be conscious speed, to avoid premature shaft or bearing damage. 5, cleaning pipetting, do not pump cleaning fluid, the inner part should be removed, after the pipetting device, so as not to heat pump pump mixed with foreign matter. 6, the temperature of the jacket heat medium jacket can be slightly lower than the jacket before and after the heat medium temperature. As the melt viscosity and shear rate into a functional relationship between the increase of extrusion, bearing shear will melt the temperature rise after the pump 3 ~ 5 ℃, reducing the heat medium temperature to avoid melt degradation. The material indicates that the bearing capacity can be greatly increased by reducing the temperature of the bearing zone without requiring the pump to be changed. Only by increasing the speed can the output of the pump be increased by 50%. 7, speed to be slow to stop, do not make a sharp rise in pressure before and after, in order to avoid damage to the bearings or smooth the passage of the melt infarction. 8, insulation pump outlet after the melt filter to be changed regularly, do not long-term high pressure and pressure ceiling operation. 9, regular replacement of bearings can save maintenance costs. When the shaft or bearing inner and outer surface abrasion amount is found to be close to the thickness of the hardened layer, the shaft can be used again after grinding and only the bearing is changed, which prolongs the life of the pump shaft by 8 to 10 years. 10, In case of power outage or heat medium infiltration influx of more than 3Omin, the pump should be re-assembled after the collapse of the collapse, so as to avoid the melt curing, cracking and other forms of poor smooth bearing insulation failure.
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