Our service includes a comprehensive deep clean of the boiler as standard, returning it to “as new” condition.
| Item | Inspect | Clean | Adjust | Calibrate |
| Doors and lids (ropes and seals) | ||||
| Refractory (fire bricks) | Yes | Soft brush | ||
| Motors and gearing | Yes | Set Tension | Lubricate with chain grease | |
| Heat exchanger & turbulators | Yes, Full removal | Wire brush | Replace if damaged | – |
| Ash boxes and extraction systems | Yes | Empty/ Vacuum | Check ash auger(s) for play & wear | |
| Igniter | Check brush wear on Leister igniters | Ensure igniter tube is free of debris | Ensure igniter is correctly positioned | Adjust preheat & prefill times if necessary |
| Light sensor | Yes, if equipped | Make sure LDR is free of soot, clean with soft cloth | Ensure sensor is correctly positioned | Ensure LDR values are within expected range in boiler software |
| Flue gas temp sensor | Yes | Clean by hand | – | – |
| Lambda probe (O² sensor) | Yes | Clean by hand | – | Run calibration software if sensor is not reading correct ambient oxygen. |
| Burn back flaps and water dousers | Yes, check condition of seals, thermal probes. Check flaps are operational. | – | Activate douse test, ensure water is present | Ensure related proximity sensors/ light barriers are functioning |
| Fuel feed system | Yes | Vacuum immediate (day) hopper if practical, inspect delivery and stoker augers | Replace auger bearings if worn. Ensure auger flights are in good condition. | – |
| Fans | Yes, run output test on all fans independently and observe for vibration and excess heat. | Clean flue fan blades | – | – |
| System performance and combustion | Yes, inspect ash to determine if boiler is running clean, lean or rich. | – | – | Adjust combustion parameters in software to achieve O² in flue stream of 9-11% at full power |
| Review data and error logs | If needed as part of diagnostics | – | – | – |
| HEATING SYSTEM | ||||
| Plumbing and fittings for leaks | Yes, inspect valves and joins | – | Apply external leak sealer to minor leaks, replace badly leaking fittings | – |
| Pipe Lagging | Yes | Remove dust from lagging | Report to customer to replace missing sections | Seal up exposed sections with aluminium tape after work |
| Expansion vessel(s) and automatic air vents | Yes, inspect pressure on potable and system expansion tanks | Check air is present and at correct pressure | Report on burst expansion vessels, replace leaking air vents | |
| Buffer tank and temperature probes | Yes, inspect lagging, ensure probes are installed correctly | – | – | Verify temp. probes are reading accurately |
| BUILDING SYSTEM | ||||
| Plant room | Yes, ensure cleanliness and access to boiler | Remove dust and debris from floor after service | Report on presence of pests (vermin, insects) | – |
| Fuel store | Yes, ensure fuel store is waterproof and pellet suction probes are operational (if fitted) | – | Ensure wood chip delivery springs are operating correctly (if fitted) | |
| Pellet vacuum delivery hoses | Yes, ensure hoses are securely connected to each port and there are no holes or tears in the hose | – | Ensure hose is in good condition. Replace sections that are damaged or that have a tight bend. | – |
| Pellet vacuum motor | Yes, inspect brushes for wear. Inspect cooling air flow to ensure motor is not overheating. Observe during operation to note fill time and commutator arcing | Remove excess dust from sieve filter and around motor. | Ensure pellet delivery hose is grounded on both ends. | – |
| Ventilation | Yes, ensure adequate airflow is maintained so combustion gas can be exhausted and system equipment does not overheat | Clean and inspect air vents or fans (as fitted) | – | – |