Hoval TopVent GV, Руководство по эксплуатации, Страница: 37 / 44

12 Maintenance and repair
Caution
Risk of injury from incorrect work.
Maintenance work must be carried out by trained personnel.
12.1 Safety
Before performing any work on the unit:
■ Switch off heating operation:
– TopTronic C: Switch the unit to the 'L_OFF' mode.
– TempTronic MTC: Set the room temperature to the lowest setting.
■ Close the cut-off valve in the gas supply line.
■ Let the unit cool off. The fan continues to run to cool down the heat exchanger.
Attention
Fire hazard due to hot components. Do not switch off the power supply
until the fan comes to a complete stop!
■ When the fan comes to a stop: switch off the plant on the main switch.
Caution
Danger of electric shocks. The unit controller and the service socket are
still live.
■ After switching off:
– Always wait at least 3 minutes.
Caution
The use of condensers can pose a danger of fatal injury from directly
touching live parts even after the unit is switched off. Only open the unit
after waiting 3 minutes.
■ Observe the accident prevention regulations.
■ Observe the particular dangers involved when working on electrical systems.
■ When working in the unit, take precautions against unprotected, sharp metal
edges.
■ Immediately replace damaged or removed informational and warning signs.
■ Following maintenance work, professionally reassemble all dismantled
protective devices.
■ Replacement parts must comply with the technical requirements of the unit
manufacturer. Hoval recommends the use of original spare parts.
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TopVent ® TG | GV | MG
Operating instructions
Troubleshooting Maintenance and repair
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