Electrical boiler repair, maintenance and annual inspection in Wonderboom and the wider Pretoria area. Same-day response for commercial and industrial plant across Gauteng.
Local Service
Our certified technicians service electrical boilers across Wonderboom and the Pretoria region — from clean steam for pharmaceutical & lab to pharmaceutical clean steam. We carry common burner spares, safety valves and controls for major brands including Vapor Power, Cleaver-Brooks, Sussman, Parat. Annual inspection, combustion analysis, tube cleaning and emergency breakdown response are all available in Wonderboom.
Brands
Our Service
Troubleshooting
Likely causes
What to check
Megger test each electrode or element to earth. Inspect junction boxes for moisture and check feedwater conductivity against the manufacturer's limit.
When to call us
If insulation resistance is below the manufacturer's minimum, the boiler must be taken offline. Continued operation risks flashover and damage to the power controller. Call for immediate element inspection.
Likely causes
What to check
Check feedwater conductivity (typically 200–400 µS/cm for electrode boilers), verify the conductivity controller is dosing correctly, and inspect electrodes for scale.
When to call us
If output doesn't match power draw after a conductivity adjustment, the electrodes likely need descaling. Running with scaled electrodes causes hot spots and premature insulation failure.
Likely causes
What to check
Verify the pressure switch setpoint, check the steam outlet path for blockages, and confirm the circulation pump is delivering rated flow.
When to call us
If high-pressure trips are frequent, the control strategy may need adjusting (e.g., power modulation matching load). Call us for a controls review before the safety valve lifts repeatedly.
Likely causes
What to check
Thermally scan the power panel under load. Check torque on all high-current terminals and inspect contactor tips for pitting.
When to call us
Any discoloured or burnt terminal must be serviced immediately — high-current arcing can fail catastrophically. We re-terminate, re-torque and replace worn contactors.
FAQ
Annually for commercial units; six-monthly for high-voltage electrode boilers in continuous industrial duty. The service includes insulation megger testing, electrode or element inspection, conductivity system check and safety device calibration.
Electricity costs more per kWh than gas, but electric boilers are 99%+ efficient with no flue losses, no standing losses and no combustion maintenance. For clean-steam applications, off-peak or solar-coupled use, and sites without gas infrastructure, they are often the right choice.
Yes — we service electrode boilers up to 5 MW including high-voltage connection inspection, electrode insulation testing, conductivity management and SCR power controller diagnostics. We follow full lockout-tagout procedures.
Yes. We can configure the boiler's power controller to prioritise solar input and modulate output to match available PV generation, reducing grid draw for clean-steam and hot water applications.
Feedwater conductivity is critical — typically 200–400 µS/cm for electrode boilers and very low TDS for resistance element boilers. We manage the water treatment, blowdown and conductivity dosing to protect electrodes and elements.
Same-day in Gauteng for critical clean-steam applications. We carry common insulation materials, contactors and sensors, and can arrange temporary steam or hot water for production continuity.
Nearby Areas
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