Please carefully read the operation instructions before use of the product. Operation installation ZX Series Self- suction Pump CONTENTS General Range of application Model meaning About the structure Brief diagram of structure Spectrum of model Table of performance parameters Diagram and table of out- form and installation dimensions Pump installation Use of the pump Maintenance, disassembly and assembly of the pump Failures causes and troubleshooting 01 01 01 02 03 03 04 05 06 07 08 09 01 ZX SERIES SELF- SUCTION PUMP ZX ISO Y YB Means the head(m) 50 ZX 12.5 - 50 (m) 3 (m /h) (mm) MODEL MEANING 3 Means the flow (m /h) Means a self- suction pump Means the suction inlet aperture(mm) ZX series self- suction pump is an energy saving pump designed with ISO international standard and developed thr- ough absorbing and improving the r elated t echnical d ata b oth at home and abroad and belongs to the self- suction centri- fugal pump and uses the mechanical seal of a ceramic ring so as to resist any sandy liquid to go into the sealing face, preventing it from getting scratched. This pump holds the advantages of a compact structure, easy operation, stable movement, easy maintenance, high efficiency, long duration and strong self- suction capacity and, as no foot valve is ne- eded to be mounted on the pipeline and only a certain am- ount of leading liquid is required to be filled into the pump before work, improves the work condition while simplifying the pipeline system. This pump can be equipped w ith e ither Y s eries c ommon motor or YB series explosion- proof one upon the different surroundings of use. 1 2 3 (100 30%) 4 1.Suitable for city environmental protection , construction , fire fighting, chemical industry, pharmacy, dyes, dyeing, brewing, electric power, electric plating, paper- making, in- dustrial and mineral rinse, equipment cooling and so on. 2.This pump, when mounted with a shaking arm shower, c an have the water burst into air and then scattered in a thin drop for spraying, useful to a farm, nursery, orchard and tee plantation. 3.Suitable for pure water, sea water, the chemical media of an acid and alkaline degree and the pulpy material of a general pasty state. (medium viscosity=100cP, solid con- tent below 30%). 4.This pump can work together with a pressure filter of any model and specification and is the most ideal matching pump to send pulpy materials to the s aid f ilter f or p ressure filtering. 02 70 This pump casing consists of a suck- in room, a liquid storing room, a scroll room, a liquid back hole, an a ir- liquid separating room etc. a nd h olds a n ax ially- liquid- back st ructure. After the pump is normally started, the impeller sucks i n t he all liquid inside of the suck- in room and the air inside of the pipeline and gets them completely mixed inside of it, then, under the action of the centrifugal force, the liquid, carrying the air, flows towards the outer edge of the scroll room and, on the outer edge of the impeller, a white foam band of a certain thickness and a quickly rotating l iquid r ing are formed. The air- liquid mixture gets into the air- liquid separating room through the expanding pipe and, as t he f low - rate is abruptly lowered thereafter, the lighter air is separ- ated from the mixture and rises through the vomit port of the pump casing and is exhausted therefrom. T he l iquid w ith the air off returns to the liquid storing room and gets into the impeller again through the liquid back hole, where it is mixed again with the air sucked in from the suck- in pipe- line and, under the action of the quickly rotating impeller, flows towards the outer edge of the impeller again , al- ong with the repeated process, the air in t he s uck- in p ipeline is continually reduced till being sucked up, the self- suction process ends and the pump gets into the normal work. This unique exhaust capacity makes the pump able to transport the air- contained liquid without a foot valve mounted and of a good cabin cleaning function when used on an oil ship. There is a cooling room on the bottom of the bearing body with some pumps and, when the bearing bodys temp- erature rise is over 70oC with the bearing heated, the cool- ing liquid can be injected in through any one of the cooling liquid unions in the cooling room for cycled cooling. The sealing mechanism inside of the pump used to prevent the liquid from leaking from the high pressure area to the low one is the front and rear seal rings, the front ring is mount- ed on the pump casing a nd t he r ear o ne o n t he b earing b ody. When the seal ring gets worn out to a certain extent after a long time work of the pump and thus affecting both effici- ency and self- suction property of it, it should be replaced. 1 8 2 9 4 11 3 10 5 12 6 13 7 14 Clutch Inlet seat Pump shaft Front seal ring Bearing Impeller Mechanical seal Rear cover Bearing body Baffle ring Pump casing Liquid filling hole Outlet seat Liquid back hole BRI