Submersible Wastewater Pump PLS Series (Horizontal)

The PLS series is a submersible wastewater pump that is designed to handle water containing small solid particles. It features a horizontal semi-vortex design that allows for operation in shallow sumps or at low water levels. The pump is constructed of a special resin and stainless steel, which provides excellent corrosion resistance and makes it lightweight.

This pump is ideal for various applications such as pumping rainwater and spring water in areas where foreign objects are likely to run into the water. It is also suitable for transferring wastewater between tanks at small-scale treatment facilities. Additionally, the PLS-series is suitable for circulating water in water feature gardens such as waterfalls, fountains, and koi ponds.

SELECTION TABLE

Category	Series	Discharge Bore mm	Impeller	Model	Motor Output kW
Category	Series	Discharge Bore mm	Impeller	Model	0.15	0.25	0.4	0.75	1.5	2.2	3.7
Sewage	PU	40 - 80	Vortex	Standard	●	●	●	●	●	●	●
				Standard	●	●	●	●	●	●	●
				Automatic	●	●	●	●	●	●	●
				Auto-alternation	●	●	●	●	●	●	●
Wastewater	PN	40 - 80	Vortex	Standard		●	●	●	●	●	●
				Standard		●	●	●	●	●	●
				Automatic		●	●	●	●	●	●
				Auto-alternation		●	●	●	●	●	●
Wastewater -High Head-	PSF	40 - 65	Closed	Standard		●	●	●	●	●	●
				Standard		●	●	●	●	●	●
				Automatic		●	●	●	●	●	●
				Auto-alternation		●	●	●	●	●	●
Wastewater -Horizontal-	PLS	50	Vortex	Standard	●		●	●
Wastewater -Horizontal-	PLS	50	Vortex	Standard	●		●	●
Seawater	TM	40 - 80	Vortex	Standard		●	●	●	●	●	●
Seawater	TM	40 - 80	Vortex	Automatic		●	●	●	●	●	●
Wastewater -Economic-	OM	32	Vortex	Standard	●
				Standard	●
				Automatic	●
				Automatic	●

APPLICATIONS

• Pumping rainwater and springwater at a place where foreign objects are likely to run into the water
• Transferring wastewater between the tanks at small-scale treatment facility
• Circulating water in waterscape garden (e.g. waterfall, fountain, koi pond, etc.)

Comparison of Continuous Running Water Level

TYPE OF IMPELLER

The closed impeller is also referred to as shrouded impeller,as it has circular shrouds at both sides of the impeller vanes. Although the pump has a limited solids passage capability, it can be used for higher pumping head applications.

MODEL NUMBER DESIGNATION

SUBMERSIBLE SEWAGE PUMP DESIGN

TOK GUIDE RAIL FITTING SYSTEM

The TOK 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.

Made of high-quality resin, the TOK is designed
for lightweight, small to middle sized pumps.
Rubber bellows attached to the guide hook are
inverted to the duckfoot bend when the pump
starts operating, and it seals by the pumping
pressure. This eliminates leakage at the seal
even if a lightweight pump is used in combination
with the TOK.

The TOK is available in all motor output ranges of
the PU, PN, and PSF series.

AUTOMATIC & AUTO-ALTERNATION MODEL

Automatic Model

The float type 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” and is availa-ble in all motor output ranges of the PU, PN, PSF, and TM series.

The cylindrical float type automatic model is available only for the OM-series. Adoption of the unique float switch has made even the automatic model very compact and enables it to be installed in a limited space. Automatic operation is possible with a simple power panel.

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 alter- nately without control panel.

The auto-alternation model has three floats and can be identified by the suffix “W”. Refer to model selection for availability and model num- bers of the PU, PN, and PSF series.

MAJOR COMPONENTS & SPECIFICATIONS

Discharge Bore mm			50
Pumping Fluid	Type of Fluid		Wastewater and Water carrying Small Solid Matters
Pumping Fluid	Fluid Temperature		0 to 40℃
Pump	Structure	Impeller	Vortex
		Shaft Seal	Double Mechanical Seal (with Oil Lifter)
		Bearing	Double-shielded Ball Bearing
	Materials	Impeller	Glass-fiber Reinforced Resin
		Casing	Glass-fiber Reinforced Resin
		Shaft seal	Silicon Carbide
Motor	Type, Pole		Dry-type Submersible Induction Motor, 2-pole
	Insulation		Class E
	Phase		Single-phase
	Starting Method		Capacitor Run
	Protection Device (Built-in)		Circle Thermal Protector (0.75kW only) Miniature Thermal Protector
	Lubricant		Liquid Paraffin (ISO VG32)
	Materials	Frame	304 Stainless Steel
		Shaft	420 Stainless Steel (0.15kW only) 304 Stainless Steel
		Cable	PVC
Discharge Connection			Screwed Flange

CABTYRE CABLES

Model	100-120V		200-240V		Length m	Material
Model	Cores × mm2	Outer Dia. mm	Cores × mm2	Outer Dia. mm	Length m	Material
50PLS2.15S	3 × 1.25	10.1	3 × 1.25	10.1	5	PVC
50PLS2.4S	3 × 1.25	10.1	3 × 1.25	10.1
50PLS2.75S	3 × 1.25	10.1	3 × 1.25	10.1

PERFORMANCE CURVES

MODEL SELECTION

Discharge Bore mm	Model	Motor Output kW	Phase	Starting Method	Solids Passage mm	Dry Weight kg
50	50PLS2.15S	0.15	Single	Capacitor Run	38 (10)	5.8
50	50PLS2.4S	0.4	Single	Capacitor Run	24 (10)	6.7
50	50PLS2.75S	0.75	Single	Capacitor Run	24 (10)	8.6

DIMENSIONS

Model	d	A	B	H1	H2	W
50PLS2.15S	50	341	142	180	185	220
50PLS2.4S	50	342	150	185	200	220
50PLS2.75S	50	362	150	185	201	310