Submersible Wastwater Pump OM Series (Economic)

The OM series is a highly efficient and economical It features a semi-vortex design that allows it to handle liquids containing moderate-sized solid particles. The pump is constructed of a special resin and stainless steel, providing excellent corrosion resistance and making it lightweight.

This pump is ideal for various applications such as pumping rainwater and springwater from basements. It is also suitable for circulating water in water feature gardens such as waterfalls, fountains, and koi ponds. Its compact size and economic features make it a popular choice for these types of applications.

In summary, the OM series is an efficient and cost-effective submersible pump that is suitable for various applications, including handling liquids containing moderate-sized solid particles and circulating water in water feature gardens.

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 from basement
• Circulating water in waterscape garden (e.g. waterfall, fountain, koi pond, etc.)

TYPE OF IMPELLER

The vortex impeller is adopted in every series except for the PSF-series. Rotation of the impeller produces a whirling, centrifugal action between the impeller and the pump casing, and it moves the fluid through the pump. Being coupled with a wide pump casing, wastewater containing solid matters can be pumped out without obstruction.

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			32
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
		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)		Miniature Thermal Protector
	Lubricant		Liquid Paraffin (ISO VG32)
	Materials	Frame	304 Stainless Steel
		Shaft	420 Stainless Steel
		Cable	PVC
Discharge Connection			Screwed Flange

PERFORMANCE CURVES

DIMENSIONS

Model	d	A	B	H	W1	W2
40TM2.25S	40	236	162	360	325	110
40TM2.25	40	236	162	349	310	110
50TM2.4S	50	236	162	360	325	110
50TM2.4	50	236	162	360	325	110
50TM2.75S	50	236	162	380	345	110
50TM2.75	50	236	162	374	335	110
50TM21.5	50	295	196	435	390	110
80TM22.2	80	311	212	559	500	130
80TM23.7	80	311	212	594	535	130

MODEL SELECTION

Discharge Bore mm	Model		Motor Output kW	Phase	Starting Method	Solids Passage mm	Dry Weight kg
Discharge Bore mm	Standard	Automatic	Motor Output kW	Phase	Starting Method	Solids Passage mm	Standard	Auto & Auto-alternation
40	40TM2.25S	40TMA2.25S	0.25	Single	Capacitor Run	10	6.7	7.2
40	40TM2.25	40TMA2.25	0.25	Three	D.O.L.	10	5.7	6.2
50	50TM2.4S	50TMA2.4S	0.4	Single	Capacitor Run	10	6.7	7.2
50	50TM2.4	50TMA2.4	0.4	Three	D.O.L.	10	6.6	7.1
50	50TM2.75S	50TMA2.75S	0.75	Single	Capacitor Run	10	8.6	9.1
50	50TM2.75	50TMA2.75	0.75	Three	D.O.L.	10	7.8	8.4
50	50TM21.5	50TMA21.5	1.5	Three	D.O.L.	20	14.9	15.6
80	80TM22.2	80TMA22.2	2.2	Three	D.O.L.	20	21	22
80	80TM23.7	80TMA23.7	3.7	Three	D.O.L.	20	26	27