Electric Boiler Maintenance Checklist

Use this Electric Boiler Maintenance Checklist for scheduled preventive maintenance of heating elements, controls, safety devices, water quality, and electrical systems.

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Electric Boiler Maintenance Checklist



Safety And Isolation

1. Lockout/tagout procedure has been applied and the unit is confirmed isolated from power before work begins.


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2. All relevant permits to work are in place and signed.


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3. PPE appropriate to the task is worn (insulated gloves, safety glasses, appropriate footwear).


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4. The boiler has been allowed to cool to a safe working temperature before internal inspection.


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5. System pressure is confirmed at zero before opening any inspection ports or drain valves.


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Visual Inspection And General Condition

1. The boiler casing and frame are free from corrosion, dents, and visible damage.


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2. All access panels, inspection covers, and gaskets are in good condition and free from leaks.


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3. No evidence of water leaks is present around pipework connections, valves, or the boiler body.


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4. The boiler room is clean, dry, and adequately ventilated.


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5. Boiler nameplates, data plates, and warning labels are present and legible.


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Heating Elements

1. All heating elements are inspected for scale build-up, corrosion, and physical damage.


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2. Element resistance is measured and recorded for each element and compared against manufacturer specifications.


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3. Any elements showing open circuit, short circuit, or significantly reduced resistance are flagged for replacement.


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4. Element flange gaskets and seals are free from leaks and deterioration.


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5. Element terminal connections are tight, corrosion-free, and correctly insulated.


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Electrical Systems And Controls

1. All electrical connections in the control panel are tight and free from signs of overheating or corrosion.


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2. Contactor contacts are in acceptable condition without excessive pitting or burning.


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3. Control panel wiring is undamaged and correctly routed.


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4. Thermostat and temperature controller settings are verified against the design setpoint.


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5. Staged switching controls or sequencers operate correctly across all load stages where applicable.


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6. Indicator lights and panel displays show correct system status.


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Safety Devices And Protection

1. High-temperature safety cutout (thermal cutoff) is tested and confirmed operational.


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2. Pressure relief valve is inspected for corrosion and free movement; it is not leaking from the seat.


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3. Low-water level cutoff device is tested and confirmed to shut the boiler down correctly.


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4. Overpressure switch is tested and confirmed operational.


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5. Any audible or visual alarms are tested and confirmed to activate at the correct setpoints.


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Water Quality And System Condition

1. A water sample is taken and tested for pH, conductivity, and hardness against the required parameters.


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2. Scale inhibitor or water treatment levels are within the specified range.


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3. The system is flushed or dosed as required based on water test results.


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4. Strainer and filter elements on the system are cleaned or replaced.


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5. Expansion vessel pressure is checked and re-pressurised if below specification.


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6. System pressure at operating temperature is within the designed working range.


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Pumps And Pipework

1. Circulation pump operates without unusual noise or vibration.


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2. Pump shaft seal is free from leaks.


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3. All isolation valves on the boiler circuit open and close freely without signs of passing.


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4. Flow and return pipework and fittings are free from corrosion, leaks, and damage.


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5. Automatic air vents are operational and free from blockages.


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Documentation And Reinstatement

1. All readings, test results, and findings are recorded on the service report or work order.


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2. Isolation is removed and the boiler is returned to service and confirmed operational.


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3. Any outstanding defects are logged with recommended corrective action and priority rating.


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4. The boiler log is updated with the service date, engineer name, and next service due date.


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Checklist by GoAudits.com – Please note that this checklist is intended as an example. We do not guarantee compliance with the laws applicable to your territory or industry. You should seek professional advice to determine how this checklist should be adapted to your workplace or jurisdiction.

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