The CMI Series Horizontal Electric Pumps are designed for efficient and reliable transfer of various industrial liquids, such as mineral water, soft or pure water, light oils, and other mildly corrosive chemical solutions.
Constructed with a cylinder-type design and cast iron inlet and outlet, the CMI pumps provide stable performance for circulation systems, water boosting, and industrial process applications.
Typical Applications
Cooling water circulation in chillers
Water treatment and purification systems
Industrial cleaning and dishwashing equipment
Process water boosting and transfer
Heating and cooling systems for industrial processes
Centralized air-conditioning and HVAC units
Air humidifying and heating devices (for soft water)
Drinking and chlorinated water supply systems
Fertilization and metering installations
Working Conditions
Liquid temperature:
Low-temperature version: −20°C to +70°C
Standard version: +15°C to +70°C
High-temperature version: +70°C to +104°C
Maximum ambient temperature: 50°C
Maximum operating pressure: 8 bar
Maximum suction pressure: limited by the maximum operating pressure
These pumps are suitable for handling non-explosive, clean, and non-viscous liquids without solid particles or fibers.
Motor Specifications
Type: 2-pole induction motor
Power supply:
Three-phase: 220/380V, 50Hz
Single-phase: 220–240V, 50Hz
Optional: 220V/60Hz or 380V/60Hz (available upon request)
Protection: IP55
Insulation class: F
Duty: Continuous operation (S1)
Additional feature: Single-phase models include built-in thermal overload protection
Installation Guidelines
To ensure safe and efficient operation, please follow these installation recommendations:
Avoid installing the pump in areas exposed to direct sunlight or excessive moisture.
Position the pump as close to the water source as possible to minimize suction length and pressure loss.
Secure the pump firmly with mounting brackets.
Install in a dry, well-ventilated space for stable motor performance.
Minimize bends in piping; maintain a slope of less than 2%.
Ensure all pipe connections are watertight and independently supported.
Install vacuum and pressure gauges on the suction and discharge lines to monitor operating conditions.
Troubleshooting Guide
| Problem | Possible Cause | Recommended Action |
|---|---|---|
| Pump does not start | Incorrect voltage; blown fuse; thermal protection triggered | Check voltage; inspect and replace fuse or reset protector |
| Pump runs but no discharge | Excessive head; low suction level; bottom valve above water; air leak in suction line | Adjust head height; refill water; check and reseal suction piping |
| Pump operates but no flow | Clogged foot valve; corroded impeller; missing priming water | Clean or replace valve; replace impeller; refill with water |
| Reduced flow rate | Clogged foot valve; worn impeller; excessive head or suction lift | Inspect and clean valve; replace impeller; verify installation height |
| Motor overheating | Low voltage; poor ventilation | Ensure stable voltage; improve ventilation |
| Pump stops shortly after starting | Voltage drop or motor overload | Contact power supplier; verify circuit capacity |
