Which frequency is correct for checking the foam concentrate pump operation?

• A. Every 14 days
• B. Every 60 days
• C. Every 90 days
• D. Every 30 days

Answer: (D)

Regular maintenance tests keep a foam system ready to perform when needed. Checking the foam concentrate pump operation every 30 days ensures the pump will start reliably, deliver foam concentrate at the correct rate, and maintain the proper system pressure without letting small issues go unnoticed.

During the monthly check, you would run the pump and confirm it starts smoothly, verify the discharge flow reaches the proportioning device, and confirm the system pressure is within spec. Look for leaks, unusual noises, or prime problems, and ensure the foam concentrate is being drawn and metered correctly. This frequency strikes a practical balance: it’s frequent enough to catch developing faults (like motor, seals, valves, or suction problems) but not so frequent that it becomes overly burdensome.