Monarch BSE-S100 Electric Motor Driven Utility Pump & Repair Parts
High-Performance Utility Pumping: The Monarch BSE-S100
The Monarch BSE-S100 Electric Motor Driven Utility Pump is a heavy-duty solution for residential, agricultural, and industrial water transfer. Equipped with a robust 1 HP Capacitor Start motor, this pump offers higher performance capabilities than standard NEMA service factor dual compartment motors. It is specifically designed for applications requiring reliability, such as lawn sprinkling, dewatering, and chemical transfer.
Durability is the hallmark of the BSE-S Series. The BSE-S100 is constructed with a rugged cast iron casing, ensuring it can withstand physical impact and harsh environmental conditions better than plastic or stamped steel alternatives. The unit features a specialized semi-open cast iron impeller that is “blind hole tapped.” This design innovation prevents the liquid from contacting the motor shaft, effectively eliminating shaft corrosion—a common failure point in standard pumps.
Key Features and Benefits
- Powerful 1 HP Motor: Delivers consistent high-flow performance for demanding tasks.
- Rapid Self-Priming: The casing features a large chamber that holds water, allowing the pump to re-prime itself quickly and automatically after the initial fill.
- Corrosion Protection: The blind-hole tapped impeller design protects the motor shaft from liquid contact, making it suitable for fertilizer and salt water.
- User-Friendly Design: The priming plug is threaded to fit a standard garden hose, simplifying the priming process without the need for tools.
- Heavy-Duty Construction: Built with a cast iron body and impeller for long service life in dirty water applications.
Common Applications
- Lawn and Sprinkler Systems: Provides ample pressure and flow (up to 80 GPM) for irrigation zones.
- General Dewatering: Quickly clears water from basements, trenches, and sumps.
- Agricultural Transfer: Safe for handling liquid fertilizers and salt water due to the protected shaft design.
Technical Specifications
| General Specifications | |
|---|---|
| Model Number | BSE-S100 |
| Order Number | 615633 |
| Horsepower (HP) | 1 HP |
| Suction / Discharge | 1 1/4″ NPT x 1 1/4″ NPT |
| Motor Type | Capacitor Start (Square Flange) |
| Electrical Characteristics | 1 Phase / 60 Hz / 115/230V |
| Shipping Weight | 46 lbs |
| Impeller Material | Semi-open, Cast Iron |
Dimensions
| Model | Discharge (A) | Suction (B) | Priming Plug (C) | Drain Holes (D) | Mounting (E) |
|---|---|---|---|---|---|
| BSE-S100 | 1 1/4″ | 1 1/4″ | 3/4″ | 3/4″ | .44 x .94 |
| F | G | H | J | K | L | M | N | P | Q |
|---|---|---|---|---|---|---|---|---|---|
| 4.00 | 2.00 | 7.75 | 10.00 | 4.88 | 7.50 | 15.80 | 3.18 | 8.06 | 3.00 |
Performance Data
| Performance Chart (Capacities in U.S. GPM) | ||||||
|---|---|---|---|---|---|---|
| Model | HP | 20 ft | 30 ft | 40 ft | 50 ft | 60 ft |
| BSE-S100 | 1 | 80 | 70 | 60 | 42 | 20 |
Repair Parts
| Ref. # | Part Code # | Qty Required | Description |
|---|---|---|---|
| 1 | 438021 | 1 | Casing – 1 1/4 – Sq. Fl. |
| 2 | 438111 | 1 | Impeller – 1 Hp Sq. Fl. |
| 4 | 438245 | 1 | Sq. Fl. Motor Mount |
| 5 | 438241 | 1 | Seal Plate Adapter – Sq. Fl. Motor |
| 9 | 246801 | 1 | End Cap |
| 21 | 120030 | 4 | Bolt 3/8 UNC x 1 1/2 |
| 34 | 176230 | 4 | Spring Washer |
| 35 | 174220 | 4 | Alum Washer |
| 38 | 185650 | 2 | Pipe Plug – 3/4 NPT |
| 39 | 193920 | 1 | Gasket |
| 40 | 191790 | 1 | Flinger |
| 45 | 240104 | 1 | Seal 5/8 I.D. Type A (Verify Type) |
| 45 | 240316 | 1 | Seal 5/8 I.D. Type B (Verify Type) |
| 50 | 204154 | 1 | Motor – 1 Hp – 115/230V – Sq. Fl. |
Frequently Asked Questions
What is the difference between the BSE-S100 and the BSE-100?
The BSE-S100 uses a “Square Flange” motor and specific mounting components, whereas the BSE-100 uses a “C-Face” motor. The parts for these two pumps are different, so always verify your model number before ordering spares.
Is the BSE-S100 suitable for sprinkler systems?
Yes, the BSE-S100 is excellent for lawn and sprinkler applications, providing up to 80 GPM flow at 20 feet of head.
What is the port size on the BSE-S100?
This model features 1-1/4″ NPT suction and discharge ports.
Does this pump require a check valve?
While the pump is self-priming after the initial fill, installing a foot valve or check valve on the suction line is highly recommended to maintain prime and protect the system.