Fire Pump Jacket Heater Replacement in Melbourne
Every diesel fire pump engine relies on a jacket heater (engine coolant heater) to keep the block warm so the engine can start instantly and take full load within seconds. In Melbourne’s cold basement pump rooms — especially through winter — a failed jacket heater is a serious reliability risk for your fire pump system.
How to Tell Your Jacket Heater Has Failed
Most AS 2941 diesel fire pump controllers have a dedicated “Jacket Heater Failure” indicator. Other tell-tale signs we find during routine AS 1851 servicing in Melbourne include a stone-cold engine block, tripped circuit protection in the pump room, hard starting during weekly test runs, and white smoke on start-up. A cold diesel engine may crank longer, start rough, or fail to reach speed — exactly what you don’t want during a fire.
Our Replacement Process
- Confirm the fault — heater element, thermostat, wiring or supply
- Isolate and drain the cooling circuit as required
- Supply and fit a correctly rated replacement jacket heater
- Refill coolant, bleed the system and check for leaks
- Verify heater operation and controller supervision
- Test-run the engine and record results for your ESM log
Because jacket heater replacement involves both the engine cooling circuit and 240V electrical supply, it sits across two trades. Melfire’s team includes licensed electricians and qualified sprinkler fitters, so one crew completes the whole job and certifies the electrical work.
Keep Your Diesel Fire Pump Ready to Start
We replace jacket heaters on diesel fire pump engines in apartment buildings, commercial sites and industrial pump rooms across metropolitan Melbourne, and can inspect the rest of your engine — batteries, starter motor, fuel system — while we’re on site.
Melfire Pty Ltd — Est. 2004 | VBA Building Design (Services) Reg. 100018 | VBA Plumbing Reg. 124876 | ESV REC 20655 — Call Melfire on 1300 134 971 or get in touch online to book a jacket heater replacement or a full diesel fire pump inspection in Melbourne.