Step 1: Verify and confirm that the system is in good and effective working condition.

Step 2: Operate the control panel to switch between manual/automatic mode and primary/backup pump operation.

a) Automatic Mode (1 Main, 2 Backup), b) Manual Mode, c) Automatic Mode (2 Main, 1 Backup)

When the switch is in the middle position, it indicates manual operation status. The fire pump's start/stop is operated via the control panel's start button, with automatic control disabled. When the switch is turned to the left position, it signifies that Pump 1 is the main pump and Pump 2 is the standby pump, abbreviated as 1 Main 2 Standby; when turned to the right position, it indicates that Pump 2 is the main pump and Pump 1 is the standby pump, abbreviated as 2 Main 1 Standby. Regardless of the switch being in the left or right position, it represents automatic operation status. At this point, the system can enable the main pump to start automatically, with manual control on the control panel disabled. During operation, if the main pump fails, the standby pump can automatically take over.

Step 3: Execute the main/backup power switch operation.

Verify that the unit is currently powered by the standard power supply (N closed, R open), with the N power (standard power) indicator light illuminated.

Switch button 1 to manual mode.

3. Rotate handle 2 to the auxiliary power supply mode (N splits, R merges), observe the N power indicator light turns off, and the R power (auxiliary power) indicator light illuminates.

4. Rotate handle 2 to the standard power supply state, and switch the operation mode switch to automatic mode.

Note: For self-restoring changeover switches, after manually switching to the backup power supply, simply revert the operating mode switch to automatic mode, and the changeover switch will automatically restore to the normal power supply.

Step 4: Simulate main power and main pump failures separately to test the automatic operation of the backup power and backup pump.

Verify that the dual power conversion switch is in automatic operation mode, then shut off the main power supply and observe the backup power supply's automatic switch-on and subsequent restoration of the main power supply.

2. Confirm that the control cabinet is in automatic operation mode. For the automatic sprinkler system, use methods such as releasing water from the end trial water device to activate the pressure switch. After the main pump starts and runs smoothly, simulate a main pump failure (cut off the main pump switch or simulate the main pump thermal relay action, see the thermal relay in the figure below) to observe whether the standby pump can automatically start and run. After manually stopping the pump, the system should return to normal operation.

Step 5: Implement manual start and stop operation of the fire pump.

Confirm that the control cabinet is in manual operation mode.

Press any fire pump start button and observe the gauges, indicator lights, and motor operation.

Press the corresponding fire pump stop button and observe the gauges, indicator lights, and motor operation.

4. The control cabinet has resumed automatic operation mode.

Step 6: Document the testing inspection situation.

Cautionary Notes

Upon starting the fire pump, closely monitor the operation of the control cabinet, fire pump, and pipeline equipment. Observe the indicator information on the control panel, the motor operation, and whether the pressure in the water supply and return lines of the fire pump is normal. Check for any abnormal vibrations or noises in the motor and pipeline. In case of any anomalies, immediately stop the operation and record the running status in the operation log. Report for repairs any necessary maintenance as soon as possible.

When operating the pump for extended periods, the valve of the test water pipeline should be opened or the water-using equipment should be activated to form a drainage passage.

3. Care for equipment and facilities by operating with appropriate force, accurate movements, and smooth gear shifts, avoiding actions like holding down for too long or rough gear changes. When performing electrical work, prioritize safety and strictly adhere to operational procedures.

4. The control cabinet should keep the fire pump in an automatic start-up state during normal operation.