What Is Pump Commissioning?

1. Introduction – Why Pump Commissioning Is Critical

Pump commissioning is the most critical stage to ensure a system operates efficiently, quietly, and reliably.
After installation, the checks performed guarantee stable, safe, and error-free operation.

At POMEKA, we have commissioned hundreds of systems using Grundfos, Wilo, Standart, Etna and Sumak pumps, and in this guide we share all steps in detail.

2. Purpose of Pump Commissioning

The main objectives of commissioning are:

• Ensuring the pump operates at the correct direction, pressure, and flow
• Verifying that no air, debris, or foreign material remains in the system
• Testing electrical safety and connections
• Confirming mechanical sealing integrity
• Establishing communication with control panels

Operating a pump without proper commissioning can lead to warranty loss, severe damage, and efficiency reduction.

3. Pre-Commissioning Preparation

3.1 Mechanical Checks

• Pump and motor base must be properly fixed
• Suction line must be airtight and stress-free
• Suction and discharge flanges must be aligned
• Strainers (Y-filters) must be clean

3.2 Electrical Checks

• Supply voltage must match motor nameplate
• Grounding must be properly connected
• Thermal protection settings must match motor current

3.3 Hydraulic Checks

• Sufficient liquid level in suction tank
• All valves must be open
• Flow line should be partially open for initial control

4. First Start-Up Steps

Air Venting

• Remove all air from suction line
• Check automatic air vents if installed

Manual Rotation Check

• Ensure shaft rotates freely

Power Supply

• Start briefly to check rotation direction
• Reverse phases if rotation is incorrect

Pressure Measurement

• Check suction and discharge pressure

Flow & Head Verification

• Compare with pump Q-H curve

5. Pump Rotation Direction and Reverse Operation Risks

Incorrect rotation causes:

• Low flow
• Excessive vibration
• Mechanical seal leakage
• Bearing damage

👉 Solution: Adjust phase sequence and verify direction arrow.

6. Step-by-Step (Staged) Commissioning

Especially for multi-pump systems:

Example: Grundfos CR booster system

• Start master pump
• Activate second pump at setpoint
• Third pump engages automatically

Check synchronization and rotation sequence.

7. Measured Parameters During Commissioning

• Suction pressure
• Discharge pressure
• Flow rate
• Motor current
• Vibration
• Temperature

All values must match pump datasheet.

8. Automation and Control Settings

Modern systems require digital setup:

Grundfos GO Remote

• Bluetooth control
• PID and pressure settings

Wilo Smart Connect

• Wi-Fi control
• Speed and scheduling

Etna E-Tech

• Protection limits setup

9. Post-Commissioning Checks

Monitor system for 30–60 minutes:

• Noise/vibration
• Stable pressure
• Leakage check
• Motor temperature

10. Common Commissioning Mistakes

• Running pump dry
• No air venting
• Incorrect valve position
• Phase imbalance
• Blocked filters

11. Safety Precautions

• Check grounding and protection
• Use safety valves
• Avoid sudden valve changes
• Use PPE for hot fluids

12. Brand-Specific Recommendations

• Grundfos: Use GO Remote, enable auto air vent
• Wilo: Keep vibration < 4.5 mm/s
• Standart: Operate at ~70% valve opening
• Etna: Minimize suction bends
• Sumak: Set thermal protection to 1.05 × In

13. Commissioning Reporting

Record:

• Date & site
• Pump model & serial
• Pressure, flow, current
• Observations
• Test result

14. Conclusion – Safe Commissioning with POMEKA

Proper commissioning:

• Extends pump life
• Improves efficiency
• Prevents failures

POMEKA provides professional commissioning services for all major pump brands.

👉 Remember: Even the best pump can fail quickly if commissioning is done incorrectly.