Type P refrigerating-canned motor pump has two types, namely horizontal type and vertical type.
Type P canned motor pump is coaxial assembled up by canned motor and centrifugal pump, vane is installed in front of motor rotator comes into being canned motor pump which is no seal, thus, can promise that pumping medium is without leak.
   The main flow of liquid directly enters into system; small part of liquid enters into motor cavity from the small hole of front-end cover in order to cool the motor and lubricate bearing, and then returns to suction container passing by rear-cover. Circulating liquid doesn?? return to inlet of vane prevents coming into being NPSH that circling liquid is absorbing the calorie of motor and temperature is raising causes, so is applying to pump the evaporable liquid.

Type 40P10?4-W canned motor pump is multi-stage and converse circling and agrees with type P in working theory.
Please join pump to system in according to up installing schematic drawing.
Should check the data plate before run. The normal working situation should be in the range of rated performance data of pump, or inflected the life of pump.
Open inlet valve and declining pressure valve and the valve in the circling pipeline (the valve should be opened for long, or inflected cooling motor and lubricating bearing) so that pump is filled with pumping liquid. Power on, test to run. After normal running, slowly open outlet valve and adjust capacity to rated data, last running.
During use, please pay attention to forbid pump to run without liquid; if necessary, running without liquid never be over 30 seconds.