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6. MAINTENANCE
- Clean with a dry, soft cloth only when the unit is disconnected and cold. Do not use solvents or abrasive products for
cleaning.
- Check periodically that the pressure in the hydrometer (7) is close to 1.5 kg/cm
2
.
- Never switch on an empty boiler.
- Before carrying out any work inside the appliance, the boiler must be disconnected from the electricity supply.
- If necessary up to a 30% of propylene glycol anti-freeze can be added to the installation.
- It is recommended to connect periodically the pump (i.e. by setting the thermostat control (10) to the minimum) in order
to avoid pump blocking.
7. TROUBLESHOTTING
Main switch (1) is not lit at any time
- Melted fuse
- No supply
- Replace
- Check de electricity supply
The boiler is on but radiators are cold.
(Heating safety limiter acted)
- Blocked pump
- Air inside de installation
- Closed valves at the radiators
- unblock the pump
- Purging
- Open the valves
Low temperature in the installation
- Thermostat control (10) is set too low
- Broken heating elements
- Wrong power calculation
- Adjust
- Replace
- Increase the power
Main luminous switch is on but First
power switch (3) does not come on
- Water is not flowing
Flow switch remains OFF
- Acted safety limiter
- Thermostat control (10) is set too low
- External timer or thermostat is off.
- Purging. Unblock the pump if necessary
- Press the pin under the black cover at (10)
- Adjust
Noisy installation
- Air inside the pump
- Low pressure
- Pump working at high speed
- purge the pump
- Increase pressure up to 1.5 kg/cm2
- Shift to a slower speed
Overpressure valve drains water
- Very high pressure
- Broken expansion vessel
- Set pressure to 1.5 kg/cm2
- Replace
8. ESQUEMAS ELÉCTRICOS / WIRING
3X 400V +N ~
Summary of Contents for CPE
Page 11: ... 11 NOTAS NOTES ...
