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27249 ‐ Supplementary Operating Manual for Type KSP 3208
This operating manual is only a supplement to the ZH operating manual 27224.
Please carefully read through both manuals and observe the information
contained in them.
Self‐priming pump KSP. A variant of the ZH‐3208 pump.
ZH 3208 is a normal multi‐stage centrifugal pump with several impellers that can achieve
high pressures. Several impellers, so‐called stages, are built in a row on a shaft. However as a
centrifugal pump, the ZH is not self‐priming and also does not have dry run protection.
By integrating a suction stage in our ZH pump, additional properties such as self‐priming and
dry run protection are achieved. The new KSP pump can then prime liquids from a tank that
is positioned lower and is not damaged by a brief dry run.
Function: The pump consists of two pump types that are mounted on a drive shaft.
A multi‐stage centrifugal pump can then only operate when the inside of the pump is always
filled with liquid. This works very well when the pump has an inflow or the suction line is
always completely filled. For example, this is possible by using a foot valve. If the pump has a
suction lift instead of an inflow and no foot valve can be used, the pump will quickly run dry
and can then no longer convey any liquid or build up pressure. Here it must first be ensured
that the liquid completely fills the pump and the complete suction line again.
An integrated suction stage is used here. This is positioned on the same shaft after the
centrifugal pump stages. When priming, the medium from the suction tank is transported
through the suction line in the pump, through all pump stages of the centrifugal pump and
finally through the suction stage. This arrangement of the stages ensures that the stages of
the centrifugal pump are slowly filled until the pump is fully filled with liquid.
Supplementary OM / Type KSP
‐ 1 ‐
Version: 27249 ‐v02
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Summary of Contents for schmalenberger KSP 3208 Series
- Page 1 27249 ‐ Supplementary Operating Manual for Type KSP 3208 This operating manual is only a supplement to the ZH operating manual 27224. Please carefully read through both manuals and observe the information contained in them. Self‐priming pump KSP. A variant of the ZH‐3208 pump. ZH 3208 is a normal multi‐stage centrifugal pump with several impellers that can achieve high pressures. Several impellers, so‐called stages, are built in a row on a shaft. However as a centrifugal pump, the ZH is not self‐priming and also does not have dry run protection. By integrating a suction stage in our ZH pump, additional properties such as self‐priming and dry run protection are achieved. The new KSP pump can then prime liquids from a tank that is positioned lower and is not damaged by a brief dry run. Function: The pump consists of two pump types that are mounted on a drive shaft. A multi‐stage centrifugal pump can then only operate when the inside of the pump is always filled with liquid. This works very well when the pump has an inflow or the suction line is always completely filled. For example, this is possible by using a foot valve. If the pump has a suction lift instead of an inflow and no foot valve can be used, the pump will quickly run dry and can then no longer convey any liquid or build up pressure. Here it must first be ensured that the liquid completely fills the pump and the complete suction line again. An integrated suction stage is used here. This is positioned on the same shaft after the centrifugal pump stages. When priming, the medium from the suction tank is transported through the suction line in the pump, through all pump stages of the centrifugal pump and finally through the suction stage. This arrangement of the stages ensures that the stages of the centrifugal pump are slowly filled until the pump is fully filled with liquid. Supplementary OM / Type KSP ‐ 1 ‐ Version: 27249 ‐v02 ...
- Page 2 27249 ‐ Supplementary Operating Manual for Type KSP 3208 Start‐up Before initial start‐up, the pump must be filled with liquid one time so that the suction stage can create a vacuum. During subsequent shutdown, enough residual liquid always remains in the pump so that a restart can take place without refilling. KSP03 3208 ‐ 2 Liters KSP06 3208 ‐ 2.5 Liters KSP09 3208 ‐ 3 Liters The centrifugal pump is sealed with a mechanical seal on the shaft. This dynamic seal may not run dry and must always be lubricated with liquid. This seal was placed after the centrifugal pump stages and after the suction stage. For this arrangement, the seal is always protected against a dry run even during priming when there is very little liquid in the pump. The suction line (max. 3m) should be as short as possible and guided vertically (always rising!) out of the suction tank. This is decisive for a good suction function of the pump. Suction lifts up to max. 2m are possible. When priming, air is first drawn into the inside of the pump. A ventilation option must be provided. The pressure line must be open (without non‐return valve) or a small ventilation line should be installed. Supplementary OM / Type KSP ‐ 2 ‐ Version: 27249 ‐v02 ...
- Page 3 27249 ‐ Supplementary Operating Manual for Type KSP 3208 Troubleshooting See also BA 27224 Error Cause of the malfunction To eliminate the malfunction Pump empty, no liquid in Fill pump with liquid before start‐ the pump. up Pump does not suck Suction lift or suction losses Shorten suction line, always install too high rising! Maximum suction lift of 2m possible. Suction line leaky Check suction line Pressure line is closed, Open pressure line (without non‐ ventilation option missing return valve) or install ventilation bypass Wrong direction of rotation Check direction of rotation, observe arrow; for incorrect direction of rotation, swap the two phases in the terminal box Parts of the suction stage Replace entire suction stage with a worn new one ...
- Page 4 27249 ‐ Supplementary Operating Manual for Type KSP 3208 Disassembly Removal of the pump, draining and preparation for disassembly are described in in BA 27224. Start at the suction side when dismantling the pump. The suction cover (162) and the normal stages (147) with impellers (233) are removed as described in BA 27224. Disassembly of the suction stage; suction stage Pos.111 is an assembly that can only be completely replaced if required. Please observe the spare parts drawing. After removing the suction stage (Pos.111), proceed further as described in BA 27224. Reassembly Assembly is essentially disassembly in the reverse order. Check all parts for wear. Damaged parts must always be replaced by new ones. Mechanical seals and all other seals are not wear‐free and should be checked for damage. Use only original spare parts for repairs! During reassembly all seals must be replaced. Observing these instructions is a precondition for problem‐free operation of the pump and for honouring any warranty claims that may be submitted. Supplementary OM / Type KSP ‐ 4 ‐ Version: 27249 ‐v02 ...
- Page 5 27249 ‐ Supplementary Operating Manual for Type KSP 3208 Spare parts drawing Supplementary OM / Type KSP ‐ 5 ‐ Version: 27249 ‐v02 ...
- Page 6 932.02 Retaining ring to 433 940 Key to 109+147 940.02 Key to 111 Not all parts are installed in every pump. Suction stage Pos.111 is an assembly that can only be completely replaced if required. © 2019 Schmalenberger GmbH + Co. KG Phone: +49 (0)7071 70 08 ‐ 0 Strömungstechnologie Fax: +49 (0)7071 70 08 ‐ 14 Im Schelmen 9 – 11 Internet: www.schmalenberger.de D‐72072 Tübingen / Germany E‐mail: info@schmalenberger.de All rights reserved. Manual is subject to changes. Supplementary OM / Type KSP ‐ 6 ‐ ...
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