Submersible Sewage Pumps C Series

Tsurumi C series pumps are heavy-duty, submersible cutter pumps for sewage and wastewater, which are made of castings and equipped with cutting mechanism. Featuring a combination of impeller vane with brazed sintered tungsten carbide alloy edge and a suction cover of serrated shape, the C-series pumps enable smooth pumping, while cutting fibrous foreign objects during suction. These pumps have been used to drain sewage and wastewater from buildings and kitchens, and to transfer sewage and wastewater in water treatment facilities of factories and commercial complexes.

The C series comes in a wide product lineup, covering discharge bore diameters of 50 to 200 mm and motor outputs of 0.75 to 37 kW. Among the C series pumps, “CR” models are available as highly-durable cutter pumps, whose impeller and suction cover are made of high-chromium cast iron as a standard feature.
All models of the C-series can be used in combination with a guide rail fitting device that enables easy installation and maintenance. In addition, a new model of dry pit type is optionally available. The dry pit type pump can be installed indoors, and outside a tank. With Tsurumi’s original specifications for dry pit, the dry pit pump delivers the performance of conventional submersible pumps in a variety of sites.

These pumps integrate original technologies that Tsurumi has researched and proven in the field over many years, such as anti-wicking cable, dual inside mechanical seals with silicone carbide face and Oil Lifter, etc.
Furthermore, durability and wear resistance have been thoroughly considered in their design, so these pumps enable continuous duty over long periods of time.Tsurumi products are designed to provide excellent durability and sound quality, thus contributing to the stable operation of facilities and enabling a considerable reduction in maintenance cost.

Performance Range

Cutting various foreign objects with cutting mechanism

Selection Table

	C (2-pole)	C (4 • 6-pole)
Discharge Bore mm	50 - 100	100 - 200
Motor Output kW	0.75 - 22	2.2 - 37
Impeller	Cutter (Channel Impeller with Cutting Edge)
Leakage Sensor	● (Float type, 15 • 22kW only)	● (Electrode type, 37kW only)
Seal Pressure Relief Ports	● (5.5 - 22kW only)	● (37kW only)
Automatic or Auto-alternation Operation	● (0.75 • 1.5kW only)
Guide Rail Fitting System	●	●
Page No.	9 - 10	11 - 12

Motor Output	0.75kW	1.5kW	2.2kW	3.7kW	5.5kW	7.5kW	11kW	15kW	22kW	37kW
2" 50mm	★
3" 80mm		★	CR	CR	CR	CR	CR	CR
4" 100mm									CR
6" 150mm							CR	CR
8" 200mm										CR

★ : Automatic or Auto-alternation model available
CR : Made of high-chromium cast iron impeller & suction cover

Advanced Model “CR”

Among the C-series pumps, the “CR” models have been developed to transfer wastewater containing foreign matter efficiently and smoothly, while maintaining high head and high volume. Since high-chromium cast iron is used for the impeller and the suction cover, the “CR” model pumps provide high durability, and enable continuous duty over long periods of time.
Also, with other models, the impeller and suction cover material can be changed to high-chromium cast iron, as an option.

Model Number Designation

Guide Rail Fitting System

The guide rail fitting system connects the pump to and from the piping easily just by lowering and hoisting the pump, allowing easy maintenance and inspection without the need to enter the sump.
The TOS/TO is the guide rail fitting system made of cast iron and is compatible with cast iron pumps.

Accessories
• Duckfoot Bend
• Guide Support
• Guide Hook
• Lifting Chain 5m
• JIS 10kg/cm² Flange

Automatic & Auto-Alternation Model

Tsurumi offers an automatic alternation system by a duplex pump comprising an automatic model “A” unit and auto-alternation model “W” unit. The “A” unit is a stand-alone automatic pump and the “W” unit is a pump that has an alternating circuitry. All without the need of extra wiring, level sensors, or control panels.

Options

Seawater-resistant version;

Galvanic anode & special Impeller

High Temperature Liquids Version

Max. 90℃

Special Material Version

Made of high-chromium cast iron impeller & suction cover

Dry Pit Version

Available upon request

Automatic Model
The automatic model has an integral control circuit and two float switches that operate at a low voltage. It operates automatically in response to the change in water levels. This model can be identified by the suffix “A.”

Auto-Alternation Model
The auto-alternation model is used along with an automatic model.
The combinational use of these two pumps enables each pump to operate alternately without control panel. This model can be identifiedby the suffix “W.”

Design Model 100C47.5

1. Anti-wicking Cable Entry
Prevents water incursion due to capillary action should the cable sheath be damaged or the end of cable submerged. Also prevents moist air from infiltrating the motor housing and condensation from forming inside the housing due to temperature differences between the housing and outside air.

2.Motor Protector
Circle Thermal Protector (7.5kW and below)
Directly cuts the motor circuit if excessive heat builds up or overcurrent occurs in the motor.
Miniature Thermal Protectors (11kW and above)
React to excessive heat caused by dry-running. The bimetal strip opens to cause the control panel to shut the power supply.

3.Dual Inside Mechanical Seals with Silicon Carbide Faces
Isolated in the oil chamber where a clean, non-corrosive and abrasion-free lubricating environment is maintained. Compared with the water-cooled outside mechanical seal, it reduces the risk of failure caused by dry-heating and adhering matter. The silicon carbide provides 5 times higher corrosion, wear and heat resistance than the tungsten carbide. Rubber parts of the upper and lower fixing rings are made of NBR or FPM (FKM), which provides higher resistance to heat and chemical

4.Oil Lifter
Provides lubrication and cooling of the seal faces down to 1/3 of normal oil level, thus maintaining a stable shaft sealing effect and prolonging seal life longer. The Oil Lifter is Tsurumi original design.

5.Leakage Sensor (18.5kW and above, excluding 150B422 and 200B422)
Detects flooding into the oil chamber that may occur in a worst case scenario. When flooding is detected, signals are sent to operate the indicator lamps through the external control panel.

6.Oil Seals
Used as a “Dust Seal,” it protects the mechanical seal from abrasive particles.

7.Seal Pressure Relief Port (5.5kW and above of 2-pole, and 200C437-CR) Protects the mechanical seal from pump pressure. It also protects the seal face by discharging wear particles.

8.Air Release Valve
Fitted on the water jacket or the pump casing to prevent the air lock. When air flows through the valve, the ball stays at the bottom, but when the pumped water starts to flow, the ball closes the outlet because of its buoyancy.

Impeller & Suction Cover

CUTTING MECHANISM
The cutter pump mechanism comprises a combination of impeller vanes with single or two brazed sintered tungsten carbide alloy edge and a suction cover of serrated shape. The front surface of the suction cover has numerous grooves that catch fibrous matter, which is then shredded by the tungsten carbide alloy edges of the impeller vanes and the saw teeth of the suction cover. This mechanism prevents the pump from being clogged with fibrous matter that can easily clog any pump.

Special Option : Dry Pit Version

Developed with Tsurumi-original specifications, aiming for stable operation and reduction in maintenance labor.

As a special option of the Tsurumi C-series cutter pumps, dry pit specifications are available. The dry pit pumps have been designed to drain wastewater from buildings, in which a mixture of all kinds of sewage and wastewater is expected.
The dry pit pumps can be installed indoors and outside of tanks, and still deliver the performance of conventional submersible pumps. Daily inspection and maintenance are easy, because the pump body is installed indoors.
These pumps have been developed with Tsurumi-original specifications, aiming for stable operation and reduction in maintenance labor. Of course, the dry pit pumps inherit the anti-wicking cable, dual inside mechanical seals with silicone carbide faces on the sides that are not in contact with wastewater, and Oil Lifter from Tsurumi’s submersible pumps. In addition, they are designed with the maximum consideration for high-temperature resistance, with bearing grease for high temperature use, class H insulation, a leakage sensor, mechanical seals made of FPM (FKM), and high-grade lubricating oil as standard specifications.Pump models of 7.5 kW or lower motor output come without a water jacket, while the models of 11 kW or higher motor output are equipped with a water jacket as a standard feature.
As the most advanced feature of the 11 kW or higher output models, a wear ring is provided to prevent waste from clogging in the water jacket. Thus, solids can enter the water jacket only through the minute clearance between the impeller and the wear ring. This structure is a Tsurumi-original design.
As described above, Tsurumi’s dry pit pumps feature a high quality, highly-reliable design that ensures excellent durability and high wear resistance. They can be installed in a variety of sites and will help keep facilities operating stably and will remarkably reduce maintenance costs.

Design Model D100C415

Example of Installation

C ( 2-pole ) -Cutter Impeller-

The C-series is a submersible cutter pump designed for handling raw sewage, wastewater, and heavy-duty industrial applications, where the pump is subject to clogging from oversize material. Single or two tungsten carbide alloy edge blazed on the impeller vane on the serrated suction cover. This mechanism cuts incoming fibrous material into pieces, permitting smooth passage of fibrous material. The impeller and suction cover of the “CR”
type are made of high-chromium cast iron, ensuring excellent durability and enabling the pump to maintain high performance for an extended period.

Performance Curves & Dimensions

Discharge Bore mm	Standard Model		Automatic Model		Auto-Alternation Model		Motor Output kW	Phase	Starting Method
Discharge Bore mm	Free Standing	Guide Rail Fitting	Free Standing	Guide Rail Fitting	Free Standing	Guide Rail Fitting	Motor Output kW	Phase	Starting Method
50	50C2.75S	TOS50C2.75S	50CA2.75S	TOS5OCA2.75S	-	-	0.75	Single	Capacitor Start
50	50C2.75	TOS50C2.75	50CA2.75	TOS5OCA2.75	50CW2.75	TOS50CW2.75	0.75	Three	D.O.L.
80	80C21.5	TOS80C21.5	80CA21.5	TOSBOCA21.5	80CW21.5	TOSBOCW21.5	1.5	Three	D.O.L.
80	80C22.2-CR	TOS80C22.2-CR	-	-	-	-	2.2	Three	D.O.L.
80	80C23.7-CR	TOS80C23.7-CR	-	-	-	-	3.7	Three	D.O.L.
80	80C25.5-CR	TOS80C25.5-CR	-	-	-	-	5.5	Three	D.O.L.^*1
80	80C27.5-CR	TOS80C27.5-CR	-	-	-	-	7.5	Three	D.O.L.^*1
80	80C211-CR	TOS80C211-CR	-	-	-	-	11	Three	Star-Delta
80	80C215-CR	TOS80C215-CR	-	-	-	-	15	Three	Star-Delta
100	100C222-CR	TOS100C222-CR	-	-	-	-	22	Three	Star-Delta

^*1 Star-Delta available upon request
^*2All weights excluding cable
Weights of guide rail fitting excluding duckfoot bend

Dimensions L x H mm				Dry Weight* 2 kg				Cable Length m
Standard Model		Auto& Auto-Alternation Model		Standard Model		Auto& Auto-Alternation Model
Free Standing	Guide Rail Fitting	Free Standing	Guide Rail Fitting	Free Standing	Guide Rail Fitting	Free Standing	Guide Rail Fitting
405 x 523	621 x 566	405 x 580	621 x 624	32	30	34	32	5
405 x 415	621 x 458	433 x 496	649 x 539	24	23	25	24	6
446 x 536	668 x 586	485 x 630	707 x 680	36	34	40	38	6
519 x 611	693 x 640	-	-	70	64	-	-	10
519 x 613	693 x 640	-	-	70	64	-	-	10
615 x 879	788 x 877	-	-	120	106	-	-	10
615 x 879	788 x 877	-	-	125	111	-	-	10
615 x 927	788 x 925	-	-	147	133	-	-	10
730 x 1086	937 x 1086	-	-	260	235	-	-	10
837 x 1184	1025 x 1184	-	-	420	380	-	-	10

C ( 4 ･ 6-pole ) -Cutter Impeller-

The C-series is a submersible cutter pump designed for handling raw sewage, wastewater, and heavy-duty industrial applications, where the pump is subject to clogging from oversize material. Single or two tungsten carbide alloy edge blazed on the impeller vane on the serrated suction cover. This mechanism cuts incoming fibrous material into pieces, permitting smooth passage of fibrous material. The impeller and suction cover of the “CR” type are made of high-chromium cast iron, ensuring excellent durability and enabling the pump to maintain high performance for an extended period.

Performance Curves & Dimensions

Discharge Bore mm	Model		Motor Output kW	Phase	Starting Method	Dimensions L x H mm		Dry Weight^*2 kg		Cable Length m
Discharge Bore mm	Free Standing	Guide Rail Fitting	Motor Output kW	Phase	Starting Method	Free Standing	Guide Rail Fitting	Free Standing	Guide Rail Fitting	Cable Length m
100	100C42.2	TOS100C42.2	2.2	Three	D.O.L.	596 x 641	754 x 656	68	64	6
100	100C43.7	TOS100C43.7	3.7		D.O.L.	601 x 715	759 x 725	84	80	6
100	100C45.5	TOS100C45.5	5.5		D.O.L.^*1	686x 908	905 x 906	133	126	8
100	100C47.5	TOS100C47.5	7.5		D.O.L.^*1	686 x 929	905 x 927	144	137	8
100	100C411	TOS100C411	11		Star-Delta	709 x 1000	928 x 998	179	172	8
100	100C415	TOS100C415	15		Star-Delta	707 x 1080	926 x 1078	221	201	8
150	150C611-CR	TOS150C611-CR	11		Star-Delta	1043 x 1211	1237 x 1126	430	390	8
150	150C615-CR	TOS150C615-CR	15		Star-Delta	1043 x 1261	1228 x 1176	500	410	8
200	200C437-CR	TO200C437-CR	37		Star-Delta	1190 x 1588	1428 x 1408	660	555	10

^*1 Star-Delta available upon request
^*2All weights excluding cable
Weights of guide rail fitting excluding duckfoot bend

Specifications

#1		C (2-pole)
#1		50C2.75S (50CA2.75S)	50C2.75 (50CA2.75) (50CW2.75)	80C21.5 (80CA21.5) (80CW21.5)	80C22.2-CR	80C23.7-CR	80C25.5-CR	80C27.5-CR	80C211-CR	80C215-CR	100C222-CR
PUMP	Discharge Bore mm	50		80							100
	Discharge Connection	Threaded Oval Flange			Threaded JIS 10kg/cm 2 Flange
	Impeller	Cutter (Semi-open Single-channel Impeller with Cutting Edge)			Cutter (Semi-open Two-channel Impeller with Cutting Edges)
	Impeller	Gray Cast Iron with Tungsten Carbide Alloy			High-chromium Cast Iron with Tungsten Carbide Alloy
	Suction Cover	Ductile Cast Iron			High-chromium Cast Iron
	Oil Seal	Nitrile Butadiene Rubber
	Casing	Gray Cast Iron
	Shaft Seal	Dual Inside Mechanical Seals (with Oil Lifter)
	Shaft Seal	Silicon Carbide
MOTOR	Type	Continuous-duty Rated, Dry-type Induction Motor
	Output kW	0.75		1.5	2.2	3.7	5.5	7.5	11	15	22
	Phase	Single	Three
	Pole	2
	Speed (S.S.) min ^-1 50/60Hz	3000/3600
	Insulation	E		F
	Starting Method	Capacitor Start	D.O.L.				D.O.L.* 2		Star-Delta
	Motor Protector (built-in)	CTP							MTP
	Leakage Sensor (built-in)	-								Float
	Lubricant ml	590	440	900	1890		2090			3300	3400
	Lubricant ml	Turbine Oil (ISO VG32)
	Frame	Gray Cast Iron
	Shaft	420 Stainless Steel
	Power Cable m	5	6		10
	Power Cable m	PVC					Chloroprene Rubber
Dry Weight*	Free Standing kg	32	24	36	70		120	125	147	260	420
Dry Weight*	Guide Rail Fitting kg	30	23	34	64		106	111	133	235	380

^{* 1} All weights excluding cable Weights of guide rail fitting excluding duckfoot bend ^{* 2} Star-Delta available upon request

Specifications

#2		C (2-pole)
#2		100C42.2	100C43.7	100C45.5	100C47.5	100C411	100C415	150C611-CR	150C615-CR	200C437-CR
PUMP	Discharge Bore mm	100						150		200
	Discharge Connection	Threaded JIS 10kg/cm 2 Flange								JIS 10kg/cm 2 Flange
	Impeller	Cutter (Semi-open Single-channel Impeller with Cutting Edge)					Cutter (Semi-open Two-channel Impeller with Cutting Edges)
	Impeller	Gray Cast Iron with Tungsten Carbide Alloy						High-chromium Cast Iron with Tungsten Carbide Alloy
	Suction Cover	Ductile Cast Iron						High-chromium Cast Iron
	Oil Seal	Nitrile Butadiene Rubber					-			Nitrile Butadiene Rubber
	Casing	Gray Cast Iron
	Shaft Seal	Dual Inside Mechanical Seals (with Oil Lifter)
	Shaft Seal	Silicon Carbide
MOTOR	Type	Continuous-duty Rated, Dry-type Induction Motor
	Output kW	2.2	3.7	5.5	7.5	11	15	11	15	37
	Phase	Three
	Pole	4						6		4
	Speed (S.S.) min ^-1 50/60Hz	1500/1800						1000/1200		1500/1800
	Insulation	F						B		F
	Starting Method	D.O.L.		D.O.L.^*2		Star-Delta
	Motor Protector (built-in)	CTP				MTP
	Leakage Sensor (built-in)	-								Electrode
	Lubricant ml	1350		422	4800	6500	5500	6000		9500
	Lubricant ml	Turbine Oil (ISO VG32)
	Frame	Gray Cast Iron
	Shaft	420 Stainless Steel
	Power Cable m			6		8				10
	Power Cable m			PVC		Chloroprene Rubber
Dry Weight*	Free Standing kg	68	84	133	144	179	221	430	500	660
Dry Weight*	Guide Rail Fitting kg	64	80	126	137	172	201	390	410	555

^{* 1} All weights excluding cable
Weights of guide rail fitting excluding duckfoot bend
^{* 2} Star-Delta available upon request