Jockey Pump Troubleshooting & Repair in Dubai
A jockey pump maintains standby pressure in a fire system so the main pump only starts for a real demand. Constant cycling usually means a system leak or a failing check valve; a pump that never runs points to a faulty pressure switch or setting; a pump that runs continuously signals a leak it can no longer keep up with. QSERV diagnoses the actual cause in Dubai pump rooms and repairs it — pressure switch, check valve, wiring, controller or the pump itself.
DCD-approved · 12+ years in Dubai fire safety · Hassantuk-integrated · 18,000+ customers served
A jockey pump fault is a warning, not a nuisance
The jockey pump exists to absorb minor leakage so the main fire pump is not started needlessly. When its behaviour changes, it is almost always telling you something about the system — a leak, a stuck valve or a drifting pressure switch. Silencing or bypassing it hides the real problem and can leave the main pump either short-cycling or starting on every small drop.
- Continuous cycling accelerates wear on pump and motor.
- A non-starting jockey pump lets pressure sag toward the main-pump start point.
- Constant running usually means a leak that is getting worse.
- Short-cycling stresses the controller and contactors.
- A masked fault becomes a compliance and reliability risk.
We read the symptom, then find the cause
Each failure pattern points somewhere specific. QSERV works the symptom back to its source rather than resetting the pump and leaving. Cycling and continuous running lead us to leaks and check valves; a dead jockey pump leads us to the pressure switch, wiring and controller; noise and heat lead us to bearings and seals.
- Constant cycling: trace system leakage and test the check valve.
- Never starts: verify pressure switch settings, wiring and controller.
- Runs continuously: locate the leak or failed non-return valve.
- Noisy or hot: inspect bearings, seals and coupling alignment.
- Wrong cut-in / cut-out: reset switch to design pressures.
Repaired, tested and left compliant
Once the cause is confirmed, QSERV repairs or replaces the failed part, resets the pressure switch to the system's design cut-in and cut-out values, and confirms the jockey pump holds pressure without hunting. The main pump start pressure is verified so the two work together as intended, and the work is logged.
- Pressure switch, check valve or pump repaired or replaced.
- Cut-in and cut-out reset to the design pressures.
- System watched to confirm the pump no longer short-cycles.
- Main-pump start pressure verified against the jockey range.
- Work recorded in the maintenance logbook.
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Frequently Asked Questions
Answers for facility managers dealing with a misbehaving jockey pump in Dubai.
Why does my jockey pump keep cycling on and off?
Frequent cycling almost always means the system is losing pressure through a small leak or a failing check valve, so the jockey pump keeps topping it up. QSERV traces the leakage and tests the non-return valve rather than simply widening the pressure band to mask it.
My jockey pump runs constantly — is that serious?
Yes. A jockey pump running non-stop is trying to keep up with a leak it can no longer cover, which will eventually let pressure drop toward the main-pump start point. It needs the leak found and corrected, not left running.
The jockey pump will not start at all — what is wrong?
Usually the pressure switch is faulty or set wrong, or there is a wiring or controller fault. QSERV checks the switch settings against the design cut-in pressure, then the wiring and controller, and repairs whichever is at fault.
Can a jockey pump fault affect the main fire pump?
Yes. If the jockey pump cannot maintain pressure, the main fire pump may start on minor demands it was never meant to answer, causing needless wear. Getting the jockey pump right protects the whole pump set.
Should I just replace the jockey pump?
Not always. Many faults are the pressure switch, check valve or a system leak rather than the pump itself. QSERV diagnoses the real cause first and only recommends replacement when the pump is genuinely at fault or end of life.
Is QSERV approved to work on fire pump rooms in Dubai?
Yes. QSERV is a DCD-approved, ISO 9001 fire-safety contractor operating since 2013, using in-house engineers with no subcontracting for pump-room diagnosis and repair.