LEGALLAIS HB300 Manuel De Mise En Service, D'opération Et D'entretien page 66

Press the „UP" and „DOWN" key, you can adjust the
minute.
Press the TIME ON key again, the minute digit stops
flashing and the hour digit starts flashing.
Press „UP" and „DOWN" key, you can adjust the hour.
Press the TIME OFF key, the minute digit ont he display
starts flashing slowly.
Press the „UP" and „DOWN" key, you can adjust the
minute.
Press the TIME OFF key again, the minute digit stops
flashing and the hour digit starts flashing.