FM200 Cylinder Recharge & Refill — UAE
FM200 cylinder recharge refills a clean-agent cylinder with HFC-227ea agent back to its original design weight and re-pressurises it with nitrogen super-pressure so the system can flood the protected room at the correct concentration again. Recharge is needed after a real or accidental discharge, or when annual weighing shows a cylinder has lost more than five percent of its agent. QSERV recharges to the system design weight, re-fits the cylinder, and re-commissions the system before returning it to service.
DCD-approved · 12+ years in Dubai fire safety · Hassantuk-integrated · 18,000+ customers served
A cylinder that has lost agent cannot suppress a fire
FM200 is stored as a liquid under nitrogen super-pressure. A cylinder can look perfectly intact yet have bled agent through a worn valve seal with no visible sign. Recharge restores the exact agent mass the room needs to reach design concentration and hold it.
- After a real fire discharge, before the system returns to service.
- After an accidental or test discharge that emptied the cylinder.
- When annual weighing shows more than five percent agent loss.
- When a slow valve-seal leak is found during maintenance.
- After a cylinder is removed and refitted during system works.
Back to the original design weight, not a guess
Every FM200 cylinder is charged to a design weight set by the room volume and hazard. QSERV recharges HFC-227ea to that exact figure and re-applies nitrogen super-pressure, so the discharge floods the room at the correct seven-to-nine-percent concentration and holds it long enough to stop re-ignition.
- Agent refilled to the system design weight for that room.
- Nitrogen super-pressurisation to the specified charge pressure.
- Cylinder and valve inspected before and after recharge.
- Discharge hoses and actuators checked on refitting.
- System re-commissioned and returned to a ready state.
Recharge is one step of returning to service
A discharge — real or accidental — means more than a refill. QSERV inspects the detection that triggered it, finds the cause of any false activation, ventilates and clears the room, and only then recharges and re-commissions, so the same fault does not empty the new charge a week later.
- Cause of any accidental discharge investigated first.
- Cross-zoned detection and panel checked before recharge.
- Pre-discharge alarms and abort switches re-verified.
- Room ventilated and cleared per the incident procedure.
- Event documented for DCD and your logbook.
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Frequently Asked Questions
Answers for data-centre, IT and facilities owners who need an FM200 cylinder recharged after discharge or weight loss.
When must an FM200 cylinder be recharged?
After any discharge, real or accidental, and whenever annual weighing shows the cylinder has lost more than five percent of its design agent weight. A cylinder that has leaked below that threshold may not hold design concentration long enough to fully suppress a fire, so it must be recharged before the system returns to service.
How is an FM200 cylinder recharged?
QSERV refills the cylinder with HFC-227ea agent back to the exact design weight for that protected room, then re-applies nitrogen super-pressure to the specified charge pressure. The cylinder and valve are inspected, refitted, and the system is re-commissioned and returned to a ready state.
Why does an FM200 cylinder lose weight without discharging?
FM200 is stored as a liquid under nitrogen super-pressure, and a worn or ageing valve seal can let agent bleed out slowly with no visible sign. That is why annual weighing matters — a cylinder can look intact yet have lost enough agent to fail when needed.
Can I keep using the system while a cylinder is being recharged?
No. While a cylinder is off the system for recharge, that room has no clean-agent protection. QSERV works to return the recharged cylinder promptly and, where a room cannot be left unprotected, will discuss interim measures so the gap is as short and controlled as possible.
Do you recharge the same cylinder or replace it?
Where the cylinder and valve pass inspection, we recharge the existing cylinder to design weight. If the cylinder shows corrosion, valve damage or is beyond its hydrostatic-test life, we advise replacement rather than recharge so the system stays reliable.
Is FM200 recharge available across the UAE?
Yes. QSERV recharges FM200 clean-agent cylinders for data centres, server rooms and switchrooms across the UAE, with recharge to design weight, nitrogen super-pressurisation and full re-commissioning handled by our in-house teams.